JP2004314039A - Continuous grinding device for crushed sand and continuous production plant of crushed sand as well as massive operating member used for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a continuous grinding device for crushed sand capable of inexpensively producing pit sand which can be used as straight sand and a water washing-type continuous production plant of the crushed sand as well as a massive operating member with a high grinding and/or crushing efficiency. <P>SOLUTION: The continuous grinding device for the crushed sand, the water washing-type continuous production plant of the crushed sand and the massive operating member with the high grinding and/or crushing efficiency are characterized by having the continuous grinding device which inputs the crushed sand through an inlet and outputs the crushed sand through an outlet during which the crushed sand in processing is jog-fed with the vibration of the massive operating member mixed in the crushed sand so as to sequentially carry out the grinding and the crushing. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

    The present invention relates to a continuous crushed sand polishing apparatus and a crushed sand continuous production plant capable of efficiently and continuously producing high-quality crushed sand that can be used as a cement aggregate as well as sea sand and river sand, and a bulk operating body used for these. .

    At present, mountain sand produced in crushed stone plants is crushed stone, has a large surface area, and has a high water absorption. Therefore, it cannot be used as a single sand as cement aggregate such as mortar or concrete. As an auxiliary material, only 30 to 50% is used at most.

  In order to use the sand as a single sand, it is necessary to make corners of the crushed sand using a polishing device and to adjust a particle size range appropriately. Moreover, unless these treatments are made particularly inexpensive, they cannot be put to practical use at all.

  As an example of a conventional mountain sand polishing apparatus, there is an example shown in Japanese Utility Model Application Laid-Open No. 58-31944 (sand ball). This is achieved by connecting a plurality of boxes through a partition wall having a gap below, putting a cobblestone or a lump of iron in each box, and drying from one side of the plurality of boxes. The sand material is charged, the box body is vibrated to grind the sand, and the polished sand is sequentially sent to the outlet side through the gap.

  Also, as an example of a conventional sand sand polishing apparatus, there is an example of Japanese Patent Publication No. 58-22656 (sand sand polishing processing machine). In this method, a single spiral partition plate extending from the inlet to the outlet is fixed to the inner periphery of a cylindrical rotary drum having an inlet for sand, gravel and water at one end and an outlet at the other end. A mountain sand polishing machine characterized in that a blade plate or a chain is installed in a V-shape in a spiral channel groove separated by a plate. The sand refined by this mountain sand polishing machine is polished and mixed with water flow and washed at the same time.Therefore, there is no adhesion or mixing of clay and weathered material. At the same time, the strength of the concrete is increased and the concrete strength is increased, and at the same time, the shrinkage of the concrete is reduced due to the decrease of the unit water amount, and the color of the concrete is also remarkably improved.

  However, in the present state of the crushed stone production plant for crushed sand, the hill sand was polished using the conventional hill sand polishing apparatus as described above, and could not be used as cement aggregate. One of the reasons is that the integration into a crushed stone plant is not deeply considered, and the treatment cost is high and is not practical.

  Another reason is that the equipment cost is high or the unit processing cost is high, and the final product cost of polished crushed sand is particularly high.

Incidentally, no matter how high the quality of the cement aggregate, no matter how high its quality is, it cannot be used if it is too high for sea sand or river sand that is simply collected. Specifically, it cannot be put to practical use unless the polishing processing cost is reduced to a fraction of the unit price of the crushed stone production unit. That is, it is a problem for the whole plant and must be immediately adaptable to existing crushed sand production plants.
JP-A-58-31944, page 1, FIG. JP-A-58-22656, page 1, FIG.

  Therefore, in view of the above prior art, the present invention can immediately cope with the remodeling of an existing crushed sand production plant, and efficiently and polished sand that can be used as a single sand as cement aggregate at a low cost. It is an object of the present invention to provide a continuous-type crushed sand polishing apparatus and a crushed sand continuous production plant that can be manufactured, and a lump operating body used for these.

A first continuous sand crushing apparatus of the present invention capable of solving the above problems is a continuous sand crushing apparatus for making crushed sand produced in a crushing plant usable as cement aggregate as well as sea sand and river sand. A device,
A gutter having a bottom surface substantially horizontal to the traveling direction;
A plurality of partition bodies that partition an intermediate portion of the gutter-like body,
A block operating body arranged in each partition room partitioned by each partition body,
A mesh network provided in the partition body, larger than the diameter of sand and smaller than the diameter of the massive operating body,
A vibrator for vibrating the entire gutter-like body at least up and down,
The sand or the quicksand mixed with water input into the partitioning chamber is mixed with and brought into contact with the block operating body in water, and is sequentially sent to the next stage while being subjected to polishing processing, and is continuously polished.

  In a general crushing stone plant, a stone is crushed by applying a forcible pressure to crush the rock, and the rock is crushed and manufactured. Therefore, the grain size is not uniform and the corners are erected. Therefore, in the present invention, the crushed sand is guided in the state of quicksand containing water into the gutter-like body divided into a plurality of chambers by the partition body, and at least a vertical vibration is given. A massive operating body such as an iron lump having a diameter of about several cm to 10 cm is mixed inside the gutter state. Here, quicksand refers to sand that contains water on the surface of the sand and has a certain degree of fluidity in a wet state. Including watered condition. The sanding effect appears more efficiently with fluid sand than with dry sand. Quicksand can also be crushed. Therefore, the crushed stone put into the gutter-like body becomes quicksand, and is further crushed or polished, and is sent to the next partitioning room through a net constituting a part of the partitioning body. It is important to control the pulverizing action and the polishing action by the massive working body or the like. Therefore, in the present continuous crushed stone polisher for polishing quicksand containing water, it is necessary to adjust the crushed stone particle size by giving a crushing action to the entire gutter-like body or a part thereof, and to adjust the FM value appropriately. . This adjustment can be performed by changing the control conditions such as the vibration condition, the massive operating body, and the feed speed according to the input crushed stone particle size.

  The shape of the massive working body is particularly important in balancing sand crushing and polishing. For example, when a spherical operating body and a massive operating body having irregularities, particularly projections, are provided in a spherical shape, pulverization occurs between the bottom portion of the gutter-like body and the massive operating body in response to vibration. In the relationship, a special difference occurs depending on the presence or absence of unevenness. The crushing function is several steps higher when the unevenness is provided. Therefore, the degree of pulverization can be freely determined depending on which shape and size of the bulk operating body is to be used, and a plurality of bulk and large working bodies having different shapes and dimensions are prepared, and which gutter and which bulk operating body are used in which ratio. Can be determined.

  The details of grinding or polishing in the vibrating gutter (container) by interaction with quicksand and massive working bodies are as follows. The lumped operating body may be a sphere having a diameter of several cm to 10 cm, and a surface provided with irregularities, particularly projections. For example, it is assumed that a protruding spherical operating body in which an iron ball having a diameter of 10 cm and six hemispheres having a diameter of 3 to 4 cm are symmetrically joined to the surface thereof is used.

  When quicksand is put into the vibrating vessel and the massive operating body is mixed therein, the massive operating body dances up and down and comes into contact with the sand. At the same time, the sand comes in contact with the bottom surface of the container, so that the sand can be crushed.

  Polishing has a great influence on the contact area and contact speed. Grinding is inversely proportional to the area of contact with the bottom surface of the working body. That is, the spherical operating body has a large contact area and therefore has a low grinding efficiency, but the spherical operating body with projections has a small contact area and therefore has a high grinding efficiency.

  Therefore, by appropriately setting the vibration frequency and amplitude of the container and appropriately determining the type and amount of the massive operating body for each partitioning chamber, the degree of polishing and pulverization can be optimized, and the FM value can be appropriately controlled. it can.

  The vibrator may include a vibrating element for jog-feeding the sediment transported to the gutter-like body sequentially toward an outlet side. When the quicksand flows naturally from the inlet to the outlet, the flow velocity changes according to the flowability, and it is difficult to control. Therefore, if the vibration is controlled to include the jog feed element, the flow velocity can be accurately made constant. A jog-feeding vibrator can be provided separately from the vertically-moving vibrating body, but the jog-feeding element can be provided by one vibrating body by making the vibration direction of the vertical vibrating body an angle. Can be included.

  The lower part in the cross-sectional shape of the partition body may be a net-like body, and a plate member for preventing the flow of the quicksand may be arranged on the upper part. If the entire partition body is a net-like body, the upper part and the lower part are separated into layers in the vertical relationship of the quicksand flowing in the gutter-like body, and there is a possibility that only one layer has a high speed. Therefore, when the lower part of the partition body is made into a net-like body and a plate material that blocks the flow of quicksand is arranged on the upper part, the quicksand at the transition between the partition chambers sinks into the lower part, where it mixes, and the entire sand is mixed. Polishing can be performed uniformly.

  The gutter-like body can be formed with a step so that the next stage is sequentially located at the lower position for each partition chamber. Thereby, a natural and accurate flow of quicksand can be formed, and quality can be stabilized.

The second continuous crushed sand polishing apparatus of the present invention has a bottom surface substantially horizontal to the traveling direction, and a gutter-shaped body into which dry sand or drained quicksand can be charged,
Provided on the outlet side of the gutter-like body, a mesh net having a diameter larger than the diameter of the sand charged into the gutter-like body and smaller than the diameter of the massive operating body charged for the purpose of finely pulverizing the sand,
A vibrating body that vibrates the entire gutter-like body at least up and down, and a crushed sand fine crushing device,
A gutter having a bottom surface substantially horizontal to the traveling direction;
A plurality of partition bodies that partition an intermediate portion of the gutter-like body,
A block operating body arranged in each partition room partitioned by each partition body,
A mesh network provided in the partition body, larger than the diameter of the quicksand, and smaller than the diameter of the massive operating body;
A vibrating body that vibrates the entire gutter-like body at least up and down, and a crushed sand polishing device configured by connecting the crushed sand crushed sand, the crushed sand of which the particle size is adjusted by the crushed sand fine crushing device, is formed by the crushed sand. It is characterized in that a polishing process is continuously performed by a polishing apparatus.

  A second continuous sand crushing apparatus of the present invention is a form in which a fine sand crushing apparatus is attached to a stage preceding the first continuous sand crushing apparatus. The crushed sand fine crusher has a gutter-like body similar to the above-described crushed sand polisher and a mesh provided on an outlet side thereof, and an outlet of the mesh is provided by the continuous crushed sand polisher of the first invention. It is connected to the entrance.

  The gutter-like body of the crushed sand pulverizing device may be divided into a plurality of partitioning rooms, but may not be divided. A massive operating body is put into the gutter-like body, but for the purpose of fine pulverization, an uneven surface, particularly a massive operating body with a projection is mainly introduced.

  Drained quicksand or dry sand is charged into the gutter-like body of the crushed sand fine grinding device. No water is applied to increase the efficiency of pulverization. The connection with the crushed sand polishing device may be made up and down in multiple stages, and may be made in a plane. The gutter-shaped body of the crushed sand polishing device is used with water, since it is mainly used for polishing.

  Crushed stones produced in a normal crushed stone plant are not properly adjusted in particle size and have an inappropriate FM value. In the second continuous crushed stone polishing apparatus according to the present invention, fine grinding can be freely performed in the first stage, so that the particle size distribution can be freely adjusted and the FM value can be appropriately controlled in consideration of the second stage polishing apparatus. That is, after measuring the particle size distribution of the input crushed stone, the required amount of fine crushing is determined, and the FM value of the output crushed stone can be optimized by appropriately controlling the crushed sand fine crushing device. Appropriate control of the crushed stone crusher is mainly control of the frequency, amplitude, and feed rate, and appropriate adjustment of the type and amount of the massive working body to be introduced into the gutter. Since the fine pulverization can be partially performed in the crushed sand polishing apparatus, the required pulverization degree should be determined in the entire flow.

The first crushed sand continuous apparatus plant of the present invention comprises a primary and secondary crusher and a granulator, which sequentially crush raw material stones to obtain crushed sand of about 5 mm or less,
A vibrating sieve that is placed between these machines and sends the remaining stone material to the next stage except for the crushed sand component,
Water flowing means for applying water to the crushed sand output from each vibrating sieve and the sizing machine to generate a water flow mixed with crushed sand,
The sand mixed with water generated by the water flowing means is input, cut off excess water, the amount of crushed sand is adjusted to an amount just immersed in water, the quicksand generating means for generating the adjusted sand with the water flow,
The crushed sand polishing in which the quicksand generated by the quicksand generating means is input to the inlet side and output toward the outlet side, and the sand is gradually polished while jog-feeding the quicksand being output by the vibration of the massive operating body mixed in the quicksand. Device and
Following the continuous production of crushed sand by crushing the raw material stones, the crushed sand product is continuously produced by successively performing a polishing treatment.

  The continuous crushed sand production plant of the present invention is a form in which the first continuous crushed sand polishing apparatus is connected to a rinsing crushed stone plant. Therefore, a single sand having an appropriate FM value can be continuously produced by continuously polishing the crushed stone produced by the water crushing stone crushing plant with the first continuous crushed stone polishing apparatus of the present invention. .

  Here, in the present invention, the water flow mixed with the crushed sand obtained in the washing type crushed stone plant is input, excess water is cut off, the amount of water is adjusted to an amount just enough for the crushed sand to be immersed in the water, and the amount of adjusted sand is generated. A quick-sand generating means is provided, and the quick-sand having good fluidity generated by the quick-sand generating means is finely pulverized and polished. The reasonably good fluidity is such that the fluid does not flow naturally but flows with a slight vibration.

  The quicksand generation means, in short, it is only necessary to drain the water flow mixed with crushed sand, so once the sand collected in the water tank such as the catchment mass is pumped out by a bucket conveyor etc., and the excess water is returned to the washing crushed stone plant, Various forms can be designed, such as applying a stream of water to a gutter or conveyor that sends quicksand to overflow excess water. The amount of water in the quicksand relative to the sand may be a required ratio, for example, 1: 0.5 or 1: 2 in volume ratio, in addition to 1: 1. This is because sand has a favorable fluidity in a sufficiently wet state.

  The crushed stone polishing apparatus must be capable of continuously polishing the quicksand output from the quicksand generating means. In the continuous sandblasting device of the present invention, the quicksand is input to the inlet side and output toward the outlet side, and the vibrating mass-operated bodies mixed in the quicksand cause the quicksand being output to be jog-fed in sequence. Mill and grind.

  ADVANTAGE OF THE INVENTION According to the water-washing type crushed sand continuous apparatus plant of this invention, the crushed sand product which was polished efficiently and inexpensively is manufactured by performing continuous crushing of the raw material stone, and then successively crushing and polishing. be able to.

The second crushed sand continuous apparatus plant of the present invention comprises a primary and secondary crusher and a granulator for crushing the raw material stone sequentially to obtain crushed sand of about 5 mm or less,
A vibrating sieve that is placed between these machines and sends the remaining stone material to the next stage except for the crushed sand,
Water flow means for applying a water to the crushed sand output from each vibrating sieve and the sizing machine to generate a water flow mixed with crushed sand,
The sand mixed with water generated by the water flowing means is input, cut off excess water, the amount of crushed sand is adjusted to an amount just immersed in water, the quicksand generating means for generating the adjusted sand with the water flow,
A crushed sand fine crushing device for inputting sand which completely cuts water from the water-mixed sand generated by the water-streaming means, crushing the sand by vibration of a massive operating body mixed in the sand, and adjusting the particle size,
Next to the crushed sand pulverizing device, water is added to the sand whose particle size has been adjusted by the device to generate quicksand mixed with water, the quicksand is input to the inlet side and output toward the outlet side, and the Having a crushed sand polishing device that sequentially polishes while jog-feeding the sand that is being output by the vibration of the massive operating body mixed with
The method is characterized by continuously and efficiently producing a polished high-quality crushed sand product by successively and continuously performing grain size adjustment and polishing treatment after the continuous crushed sand production by crushing the raw material stone.

  The second continuous sand crushing device plant of the present invention is a form in which the second continuous sand crushing device is connected to a water washing crushed stone plant. It is a matter of course that the crushed stone produced outside the water-washing type crushed stone plant can be brought into the crushed sand fine crushing apparatus and also processed together.

As already indicated, the mass-operated body mixed in the granular material put into the container, and used to pulverize or grind the granular material according to the rotation of the container or at least vertical vibration. ,
According to the block-shaped operating body having a block-shaped main body and having a plurality of irregularities on its surface, sand can be finely pulverized efficiently. By making the irregularities protrusions, the pulverization efficiency can be maximized.

  The bulk operating body of the present invention is not limited to the crushing of sand, but can be used for crushing or finely crushing various granular materials such as various chemicals, compounding agents, foods and cosmetics. In addition, the present invention is not limited to the case where the bulk operating body is charged into the container, but can be charged into a rotating body such as a rotary mill device, and various kinds of granular materials can be efficiently pulverized by the milling action by rotation and dropping.

  According to the first continuous sand crushing apparatus of the present invention, quicksand is sent to a gutter-like body provided with a plurality of partition chambers partitioned by a partition body having a net, and the massive operating body mixed in the quicksand is guttered. Since the vibrating member is vibrated by vibrating at least vertically, the quicksand can be continuously and efficiently polished. In addition, since the type and amount of the massive working body can be adjusted and crushed in addition to the polishing action, the particle size distribution of the sand can be made appropriate, and single sand usable as cement aggregate can be produced at low cost. Can be manufactured.

  If the vibrating element includes a vibrating element for jog feeding, the feeding speed can be made constant, and high quality single sand with stable quality can be manufactured.

  If the lower part of the partition is made of a mesh and the upper part is made of a plate material that blocks the flow of quicksand, the upper part can be inserted into the lower part at the position of each partition, and the upper and lower layers are mixed to improve quality. Can be stabilized.

  If the gutter-like body is formed with a step so that each partition chamber is sequentially positioned at the lower position, the quicksand can flow stably at a constant speed in a natural form.

  According to the second continuous crushed sand polishing apparatus of the present invention, the crushed sand fine crushing apparatus for crushing the crushed sand is attached before the polishing apparatus, so that the crushed sand finely crushed can be appropriately performed as needed.

  When the crushing capacity of the crushed sand fine crushing apparatus is A and the crushing capacity and polishing capacity of each partition chamber of the polishing apparatus are Bi and Ci (i is the number of each partition chamber), A + (Bi + Ci) can be appropriately controlled. A can be positively pulverized to improve the particle size distribution, and Bi can be pulverized by grinding the whole to improve the volume ratio for determining the particle shape.

  The input sand as a raw material is crushed stone, has corners in shape, and has a poor particle size distribution. In addition, the surface of each grain has minute irregularities as a surface property, and absorbs light to appear dark. Since the particle size distribution is poor and the corners are raised, the particle size determination volume ratio is also poor. In the present invention, after determining the condition of the input sand, the control conditions are determined, and the grinding Bi + Ci of the fine pulverization A and the quicksand can be appropriately performed. Therefore, these characteristics can be improved at a stretch, and the particle size distribution and the polishing degree can be improved. Appropriately, the particle size determination volume ratio can be increased, and high quality single sand can be obtained, which is superior to conventional single sand.

  In addition, since dry sand can be input in addition to drained sand, the present invention is not limited to the output of a crushed stone crushing plant, and dry sand produced by any plant can be used as a raw material.

  According to the first crushed sand continuous production plant of the present invention, the washing crushed stone crushing plant and the first continuous crushed stone polisher of the present invention are combined and continuously processed, so that the crushed stone can be continuously polished next to the crushed stone, and inexpensive. High quality single sand can be manufactured.

  According to the second continuous crushed stone crushing plant of the present invention, the second continuous crushed stone polisher of the present invention is combined with the rinsing crushed stone plant, and the continuous processing is performed. In addition, it can be performed efficiently, and higher quality single sand can be produced at low cost.

  Since the massive operating body of the present invention has a massive body and has a plurality of irregularities on its surface, it can apply a required grinding force to the granular material in response to vibration or rotation, and can efficiently and rapidly grind. Can be processed. When a projection is provided on the surface, a concentrated pressing force can be applied at the tip of the projection, and the crushing force can be particularly increased. The same effect is obtained when only a plurality of concave portions are provided on the surface, but the polishing area can be increased because the contact area with the granular material becomes large. The bulk operating body having no unevenness on the surface and various bulk operating bodies having unevenness on the surface can be used in any combination, and by appropriately performing these combinations, polishing and grinding or fine grinding can be performed. The degree can be adjusted freely.

  BEST MODE FOR CARRYING OUT THE INVENTION With reference to the accompanying drawings, the best mode for carrying out the present invention will be described below with reference to a first continuous sand crushing production plant equipped with a first continuous sand crushing device, a second continuous sand crushing device, The operation will be described in detail in the order.

  FIGS. 1 to 5 are system configuration diagrams according to an embodiment of a first continuous crushed sand production plant provided with a first continuous crushed sand polishing apparatus SGM-1 of the present invention. FIG. 2 is a perspective view showing an embodiment of the first continuous quicksand polisher of the present invention.

  As shown in FIG. 1, a stone 1 as a raw material is passed through a primary crusher 2, a secondary crusher 3, and a sizing machine 4 in this order, and is finely crushed sequentially. A vibrating sieve 5-i (i = 1 to 3) is interposed between each machine, and a belt conveyor 6-i (i = 1 to 5) is interposed between each machine and the vibrating sieve 5-i. Material is moved.

  The crushed sand having a size of 3 mm or less selected by the vibrating sieve 5-i is sprinkled with water to form a stream of water, and is sent to a water separator 8 as a stream of sand 7. Here, the sand containing water is referred to as quicksand, but the one that has a large amount of water and flows along with the flow of water is referred to as quicksand 7.

  The water separator 8 is a device particularly required in the present invention. The water separator 8 creates quicksand 9, which is sand mixed with water, and transfers the remaining water 10 to a classifier 12 via a pipe 11i (i = 1 to 3). send.

  In the classifier 12, the water 10 is cut off from the input material and the sand content is classified to obtain a crushed sand product GS having a size of, for example, 3 mm or less, similarly to the classifier used in the conventional crushing stone crushing plant.

  The water 10 output from the classifier 12 is contaminated because it is water obtained by washing sand. The contaminated water is filtered, squeezed by the press 13 to separate the cake 14, and the remaining water is returned to the vibrating sieves 5-1 and 5-2 and the sizing machine 4 via the pipe 11-2.

  The vibrating sieve 5-3 disposed next to the sizing machine 4 takes the coarse product 15 as a coarse component, and makes the remaining sand water flow like the other vibrating sieves 5-1 and 5-2. 3 to the water separator 8.

  In the present embodiment, a drum type washer 16 for washing the crushed stone material input to the primary crusher 2 is provided. Those having a size of 5 mm or less are sent to the belt conveyor 6-1.

  Next, in the water separator 8, the flowing sand 7 is input, the water is reduced, and the separated water is returned to the classifier 12 via the pipe 11-1. Is generated. The water separator 8 is configured to take out, for example, quicksand charged into the tank with a bucket conveyor and return overflow water to the pipe 11-1.

  In the present invention, means for sending water to the vibrating sieve 5-i or the sizing machine 4 and sending the water mixed with sand to the water separator 8 is referred to as a water flow means. In addition, the water separator 8 includes a configuration in which the water sand 7 is sent to a gutter-like body and the overflow water is returned to the pipe 11-1 in addition to the tank, and in short, the water separator 9 is formed. Here, these means are referred to as quicksand generating means. Quicksand refers to fluid sand that is wet with water or immersed in water.

  The quicksand 9 generated by the water separator 8 is sent to a continuous sand crushing and polishing apparatus SGM-1, is polished, sent to a classifier 12, is roughly dewatered, is appropriately piled, and is dried. Sold as.

  In the present example, the continuous type quicksand polishing apparatus SGM-1 is configured to support the bottom portion with a spring and vibrate the entire vibrating body including the vertical vibration by the vibrating body 17 provided at the upper part. The quicksand 9 can be input, and the quicksand 9E after the polishing process can be output.

  As shown in FIG. 2, the continuous sand crushing apparatus SGM-1 of the present invention includes a vibrating body 17 on an upper part of a box 18. FIG. 2 shows only the main body portion, excluding the lower support and the vibrator 17. The vibrating body 17 is similar to the vibrating body used in the vibrating sieve 5-i shown in FIG. 1, and vibrates up and down at a constant amplitude and a constant frequency. Further, it is assumed that a vibration element which can be jogged from the front (left side in the figure) to the rear side (right side in the figure) is included in the inside. The frequency is, for example, 800 to 1200 RPM, and the vertical amplitude is about 30 mm. The jog feed speed is a control amount that can be adjusted by the degree of the flow of the sand 9 and the vertical vibration. In this plant, one goal is to install the equipment at low cost, but it is advantageous that ready-made products such as the vibrating sieve 5-i can be used as the vibrator 17 as they are.

  The box 18 includes a pair of left and right wall plates 19R and 19L arranged opposite to each other, and has a semicircular container 20-i (i = 1 to 4) in which a drum having a diameter of 60 cm is divided into two parts. ) Are connected in the vertical direction to form a gutter-like body 21 (21R, 21L). The gutter-like bodies 21R and 21L have the same configuration and perform the same operation, and are configured in combination in a plurality of rows according to the processing amount. In this example, an example of two rows and four stages is shown. The wall plates 19R and 19L are appropriately provided with ribs 22 to hold the gutter-like bodies 21R and 21L.

  The trough-like body 21 (21R, 21L) is closed at the both ends of the plurality of semicircular containers 20-i at the ends of the entrances of the trough-like bodies 21 (21R, 21L) by using a partition wall 23, and is located at an intermediate point. Is provided with a partition 25-i (i = 1 to 4) provided with a net 24 having a mesh size of 7 to 10 mm. The partition body 25-i separates each partition chamber, and is provided with a net 24 at a lower portion and a plate 26 at an upper portion for preventing the flow of the crushed sand 13.

  When a plate-like elastic material such as a rubber plate 20R or a flexible resin plate is attached to the bottom surface of the gutter-like body 21 on the inner side of the container, the repulsive force of the polishing operating body at the time of vibration increases, and the polishing efficiency is particularly improved. In addition, the amount of crushed sand interposed between the polishing body and the bottom can be reduced, and the ratio can be appropriately controlled. These can reduce the polishing cost and the noise. However, in the polishing treatment, it is often necessary to promote the pulverization of the crushed sand. Therefore, the rubber plate 20R is used only in a case where only the polishing action is promoted in the subsequent stage.

  When the raw sand crushed in a normal crushed stone plant is tested, it is not polished and, as a matter of course, has sharp edges and an inappropriate particle size distribution. The particle size distribution is usually evaluated by the FM value as viewed from the weight fraction of the sieve passed from 0.0075 to 10 mm.

  Here, in the continuous type sand crushing apparatus SGM-1 of the present invention, since grinding can be performed in addition to polishing, the FM value can be improved by performing a grinding process. The grinding of the sand can be realized by the collision between the bottom of the vibrating gutter-shaped body and the massive operating body charged therein.

  Therefore, the continuous type sand crushing apparatus SGM-1 of the present invention is characterized by performing both pulverization and polishing, and it is necessary to appropriately determine the degree of both. The pulverization is mainly performed at the front stage of the gutter-like body 21. Polishing is carried out generally, and especially in the subsequent stage. For this reason, the thickness of the bottom of the semicircular container 20-i is increased in the front part of the gutter-shaped body 21 in order to increase the pulverization efficiency. Further, it is preferable that a rubber plate 20 </ b> R is attached to the rear part so that the massive operating body 27 can come off well.

  The net 24 can be made by knitting a steel wire. Alternatively, the net-like body can be constituted by the punching metal itself.

  A bulk operating body 27 having a diameter of 40 to 10 mm is charged as a polishing operating body into each partition chamber formed for each of the semicircular containers 20-i. The optimal form of the block operating body 27 will be described in detail with reference to FIG. Examples of the block-shaped actuator 27 include a spherical actuator 27A, a projection 27B provided on the surface, a depression 27C provided on the surface, and a projection 27D provided with both the projection and the depression. In the continuous-type sand crushing apparatus SGM-1 of the present invention, these bulk operating bodies 27A, 27B, 27C, and 27D can be selectively used for each partition chamber. The input amount of the mass-operated body 27 is an amount of 1/2 to 2/3 of the upper height of the net 24 so as to provide a required polishing action. In the polishing action, the difference in the diameter of the sphere has little effect.

  The operation of the continuous sand crusher SGM-1 having the above configuration will be described. First, the water-washing type crushed stone plant shown in FIG. 1 is driven to generate the quicksand 7 and the quicksand 9 via the water separator 8. Next, the vibrating body 17 of the continuous sand crushing and polishing apparatus SGM-1 is driven, the quicksand 9 is charged into the first-stage semicircular container 20-i, and the crushing and polishing processing is started.

If the input amount of the quicksand 9 is too large with respect to the optimum input amount Qm ³ / min, the overflow will occur. However, the variable amount thereof can be up to about 50% up and down, and has a considerably large allowable width. In other words, it is possible to flexibly cope with continuous production in relation to other machines.

  The pulverizing and polishing operations will be described with reference to FIGS. The loaded sand 9 is mixed with the massive operating body 27 by the vertical vibration of the vibrating body 17. The massive operating body 27 is in a form floating in the quicksand 9. Then, it jumps up due to the up-down vibration and dances in the quicksand 9.

  When the massive operating body 27 dances in the quicksand 9 in the semicircular container 20-i, the quicksand 9 comes into contact with the surface of the massive operating body 27, and is crushed and polished. In the crushing, the container bottom and the massive operating body 27 collide with the quicksand 7 sandwiched between the container and the container bottom, so that the sand is selectively crushed to a specific particle size. In order to accelerate the pulverizing process, it is optimal to use a protruding block-shaped operating body 27B. Incidentally, when comparing a sphere of 10 cm in diameter in contact with the bottom of the container with a projection of 3 cm in diameter, the contact area is about 9 times different, so that the force acting on one grain of sand is 9 to 10 times stronger. The particle size to be pulverized can be selected according to the size of the projection. Therefore, a raw material having an inappropriate FM value can be pulverized and polished to produce a single sand having an appropriate FM value and good quality.

  If a plate-like elastic material such as a rubber plate or a flexible resin plate is attached to the bottom surface of the gutter-like body 21 on the inner side of the container, the repulsive force of the polishing working body during vibration becomes extremely high, and the height of the lump-like working body 27 dances. The polishing efficiency can be increased, and the polishing efficiency can be particularly improved. In addition, the amount of crushed sand interposed between the massive operating body and the bottom can be appropriately controlled. 3 and 4 show an example in which the rubber plate 20R is attached. These can reduce the polishing cost and the noise. Thus, the sand in the quicksand 9 is rubbed, rubbed, kinked, polished, and efficiently crushed and polished at the bottom of the semicircular container 20-i together with the massive operating body 27.

  As shown by the arrows in FIG. 4 to show the movement, the quicksand 9 and the mass-operated body 27 are jogged to the rear. Therefore, in one semicircular container 20-i, the sand moves the contents sequentially from the front partition 25-i to the next partition at a constant speed. Here, since the mesh is larger than the radius of the sand and smaller than the diameter of the massive operating body 27, the massive operating body 27 stops inside the semicircular container 20-i, and only the sand 28 remains in the next semicircular container 20-i. Go to -i. Here, since the upper part of the main partition 25-i is the plate 26, the quicksand 9 can be moved from the lower net 24 to the next partition chamber and stirred up and down to improve the polishing quality. By repeating these, the quicksand 13 can be subjected to the required crushing and polishing treatment while being in contact with the bulk operating body 27 in the semicircular container 20-i.

  The polished quicksand 9E passes through the net 24 of the partition body 25-4 at the last stage in FIG. 2, is put into the classifier 12, is roughly dewatered, is appropriately drained and drained, and is sold as a product GS. . The overflowed water 10 is appropriately filtered and reused through a classifier 12 and a press 13.

図５において、粒度曲線は滑らかで、総合評価のＦＭ値は、2.5程度であった。また粒子の角が取れ、手触りソフトでまろやかな高品質の製品とすることができた。図において、Ｃ−１は研磨前の曲線を、Ｃ−２は研磨後の曲線をそれぞれ示している。比較例によるＦＭ値は2.9、実施例のものは2.38であった。また、1.2mm〜0.15mmの残留％の平均化を図ることができた。 In the embodiment, 1.72 t of the bulk operating body 27 was put into a continuous crushing sand polisher SGM-1 having a total weight of 4300 kg, and quick sand 9 was sequentially put therein. Observation of the sand after polishing revealed that the sand was cut off and passed the sieving test shown in FIG. 5, and the sand was sufficiently used as a single sand of mortar and concrete. Specific test values are shown in Tables 1 and 2 as Comparative Examples and Experimental Examples, and the results are shown in FIG.

In FIG. 5, the particle size curve was smooth, and the FM value of the comprehensive evaluation was about 2.5. In addition, the corners of the particles were removed, and the product was soft, mellow, and high-quality. In the figure, C-1 shows a curve before polishing, and C-2 shows a curve after polishing. The FM value of the comparative example was 2.9, and that of the example was 2.38. In addition, the residual% of 1.2 mm to 0.15 mm could be averaged.

  In the embodiment described above, the vibration body 17 is shown as one, but the vertical vibration and the forward-backward vibration may be performed by separate vibration bodies. Further, the vertical vibration can be divided into a plurality of vibrators. The massive operating body may be a rod instead of a sphere. Although the gutter-like bodies 21L and 21R are configured by connecting the semicircular containers 20-i, they can be integrally formed using a long material. Further, although the cross-sectional shape of the gutter-like bodies 21L and 21R is shown as an example of a semicircle, it may be a U-shape or a box shape with rounded corners.

  Furthermore, although the example in which the gutter-like bodies 21L and 21R are horizontal is shown, a slight inclination may be provided in the front and rear to facilitate the jog feeding operation, and conversely, the lump-shaped operating body 27 is partitioned by lowering the front side. The movement toward the body 25-i can be prevented, and only the sand can be moved. The angle can be freely adjusted for each partition chamber. In addition, a step may be provided in such a manner that the semicircular container 20-i is sequentially positioned at a lower position of about 5 to 10 cm as it goes to the subsequent stage, so that the flow is accurate and the stirring effect can be enhanced.

  FIG. 6 is a perspective view showing an embodiment of the second continuous sand crushing apparatus SGM-2 of the present invention. By replacing the continuous sand crushing apparatus SGM-2 with the continuous sand crushing apparatus SGM-1 shown in FIG. 1, a second continuous sand crushing production plant can be configured.

  In the continuous crushing sand polisher SGM-2 of the present invention, a gutter-like body 30 whose flow direction is reversed is arranged below the outlet of the tray 29 at the uppermost stage, and below the outlet, the continuous type grinding machine already shown in FIG. A two-row four-stage polishing device 31 having a similar configuration to the crushed sand polishing device is arranged.

  Both the tray 29 and the gutter-like body 30 are configured in two rows, and each row is connected to each row of the lower polishing apparatus 31. The gutter-like body 30 and the gutter-like body constituting the polishing apparatus 31 are both shown as box-shaped examples. The tray 29, the gutter-like body 30, and the polishing device 31 are integrated together, and the lowermost end is supported by a spring 32, and is vibrated up and down by a vibrating body (not shown) including the jog feed element.

  Drained sand 9C or dry sand 9D can be input to the raw material receiving port (the left end in the figure) of the receiving tray 29. The other end of the tray 29 is an open end, and the raw material sands 9C and 9D are jog-fed and dropped from the open end to a raw material receiving port (left side in the figure) of the gutter-like body 30 below.

  The gutter-shaped body 30 is shown as an example formed of one box-shaped container, and a net 24 similar to that shown in FIG. 2 is arranged at the outlet end. In addition, in the container, a massive operating body 27 </ b> B having a high crushing function is provided as a massive operating body 27. Accordingly, the raw sand 9C or the dry sand 9D is finely pulverized by the action of the massive operating body 27B and sent through the net 24 in a direction opposite to the feed direction of the raw material. Sent to the room. Here, when the entire apparatus is supported by the spring 32, the sand in the gutter 30 tends to move rightward in the figure. However, since the gutter-like body 30 is provided with a slope that rises to the right (downward to the left) in the figure or a high wall is provided on the right side, the gutter-like body 30 does not fall off from the right direction, and is appropriately mixed with vibration. Then, it receives the action of the massive operating body 27B well, is pulverized and sent to the first stage of the polishing device 31.

  A water supply pipe 33 is provided above the first stage of the polishing device 31 so that water 10 can be charged. Therefore, the quicksand 9C or the dry sand 9D sent from the gutter-like body 30 is covered with water, and becomes the quicksand 9 in a state of being filled with water.

  The polishing device 31 is formed by sequentially connecting four gutter-like bodies 34-i (i = 1 to 4), and each connection portion is provided with a net 24 similar to that shown in FIGS. ing. Each gutter 34-i is raised so that it becomes higher toward the first stage, so that quicksand is more naturally transferred to the next gutter 34-i.

  Each of the gutter-shaped bodies 34-i of the polishing apparatus 31 can be charged with a different type of lump-shaped operating body 27 (27A, 27B, 27C, 27D). In this example, the protruding mass-operated body 27B is put into the first-stage and next-stage gutter-shaped bodies 34-1 and 34-2, and the third- and fourth-stage gutter-shaped bodies 34-3 and 34-1. 4 is filled with a block-shaped operating body 27C having a concave portion. Therefore, sufficient pulverization and preliminary polishing can be performed in the first and second stages, and sufficient polishing can be performed in the third and fourth stages. From the fourth-stage gutter-like body 34-4, the sufficiently crushed and polished quicksand 9E can be output.

図７において、Ｃ−３は研磨前の曲線（比較例）を、Ｃ−４は研磨後の曲線（実施例）を示している。比較例Ｃ−３では、ＦＭ値2.460で粒径0.075〜0.6mmの通過量が大であるが、ＦＭ値は2.619となり、曲線は破線で示す許容値の丁度中間位置に改善されている。十分な研磨を行っているので、角が取れ、山砂は勿論のこと今までの海砂や川砂では見られなかったほどまろやかな高品質の砂となっている。 In the above configuration, the second continuous sand crushing device SGM-2 of the present invention is provided with the crushed sand fine crushing device 35 including the receiving tray 29 and the gutter-shaped body 30, so that the sand 9C from which water has been drained is removed. Alternatively, the dry sand 9D can be finely pulverized as needed, and then secondarily pulverized by the polishing device 31 to be polished. As the dry sand 9D, crushed stone produced in the crushed stone crushing plant shown in FIG. 1 may be dried once, or may be produced in another crushed stone plant. In the case of joining with the crushed stone crushing plant shown in FIG. 1, high quality single sand can be efficiently produced as the second continuous crushed sand production plant. Examples are shown in Table 3 and FIG.

In FIG. 7, C-3 shows a curve before polishing (Comparative Example), and C-4 shows a curve after polishing (Example). In Comparative Example C-3, although the passage amount of the particle diameter of 0.075 to 0.6 mm is large at the FM value of 2.460, the FM value is 2.619, and the curve is improved to the intermediate position of the allowable value indicated by the broken line. Due to sufficient polishing, the corners are removed, and the sand is mellow and high quality sand that has never been seen with conventional sea sand or river sand.

  According to the present invention, after determining the condition of the input sand, control conditions are determined, and fine grinding of sand and polishing of quicksand can be appropriately performed. Therefore, the product GS of the present invention can improve the characteristic defect point of the raw material sand at a stretch, make the particle size distribution and the degree of polishing appropriate, increase the particle size judgment volume ratio, and produce high quality single sand. Was completed. From the viewpoint of the volume ratio, it is as if the required amount of sand of the required particle size was mixed in the required amount, and the eyes were clogged. This is probably due to the excellent matching between the quicksand and the massive working body. In addition, the surface of the sand grains can be made glossy, and the water absorption can be kept low. It is possible to reduce the amount of cement to give the same strength without unnecessarily adsorbing the cement. This indicates that the polishing method is appropriate. Product GS is the highest quality single sand, surpassing natural sand.

  As shown in FIG. 8, a protruding mass-operated body 27B according to an embodiment of the present invention has a main body 36 with a diameter D, and has a plurality (six) of protrusions 37 with a diameter d1 on its surface. I have. The protrusion 37 is shown as an example of a hemisphere, but is not limited to this.

  The protruding massive operating body 27B can be manufactured, for example, as a casting. Although it can be manufactured by welding, a casting is more durable and can be manufactured at lower cost. It can also be manufactured by tying a pair of hemispheres from opposite directions and connecting them by bolts.

  The diameter D is appropriately determined according to the application. For example, when used in the previously described apparatus for finely grinding crushed sand, the diameter is about 8 to 12 cm. The diameter of the projection 37 in this case is 2 to 4 cm.

  In order to finely pulverize the crushed sand, in addition to the vibration method described above, the present invention can be applied to a polishing apparatus for a cylindrical rotary drum. When the protruding block-shaped operating body 27B of the present invention is put in the cylindrical rotary drum, it rolls in the drum in accordance with the rotation, and the sand can be finely pulverized at the projected portion. Unlike a simple sphere 27A (not shown), the crushing efficiency is particularly improved. Further, by changing the diameter of the projection 37, it is possible to change the pulverizing characteristics such as the particle size to be pulverized.

  The protruding massive working body 27B of the present invention can be used not only for fine pulverization of sand, but also for fine pulverization of granular materials other than sand, for example, various granular materials such as various chemicals, compounding agents, foods, and cosmetics. .

  FIG. 9 shows an embodiment of the massive operating body of the present invention, in which a massive operating body 27C having a plurality of (18) concave portions on the surface of a massive main body 36 is shown. The shape of the concave portion is substantially spherical, and its diameter d2 is preferably about 1/5 of the diameter D of the main body. The diameter d2 of the recess 38 is shown including two types, but may be one type or various types. The shape of the concave portion is not limited to a spherical shape, but may be any shape. The size and number of the concave portions 38 are determined according to the type of the granular material and the purpose of grinding or polishing. Generally, the number of recesses is determined to be 6 to 18.

  According to the block operating body 27C having the concave portion of the present invention, since it has a large number of concave portions, the contact area with the granular material is large, the effect of stirring the granular material is large, and the polishing efficiency is high. Further, since the pressure receiving area with respect to the container is small, the pressing force is large, which is suitable for finely pulverizing the granular material.

  FIG. 10 shows a further embodiment of the block operating body, and illustrates a block operating body 27D having both the concave portion 38 and the projection 37. The provision of the concave portion 38 and the projection 37 provides high polishing and grinding efficiency.

  The above-described massive operating bodies 27B, 27C, 27D and a spherical massive operating body 27A (not shown) can be used alone or in combination. The present invention is not limited to the sand polishing and pulverization described above, but can be applied to a polishing or pulverization apparatus having a rotating body, and can be applied to general mill apparatuses in general. The material is not limited to iron, but may be another metal or the like. Further, the shape of the main body 36 is not limited to a sphere, but may be an ellipse or another shape.

  The present invention is not limited to the above embodiments, and can be appropriately modified in design without departing from the gist of the present invention, and can be implemented in various modes.

BRIEF DESCRIPTION OF THE DRAWINGS It is a system configuration | structure figure of the washing type crushed sand continuous manufacturing plant which concerns on one Embodiment of this invention. It is a perspective view showing one embodiment of the 1st continuous type sand crushing device of the present invention. 3 is a cross-sectional model showing an operation of the continuous sand crushing apparatus shown in FIG. 2. 3 is a longitudinal sectional model showing the operation of the continuous sand crushing apparatus shown in FIG. 2. It is a graph which shows the Example by the sieve test of the crushed sand ground with the 1st continuous-type sand crushing apparatus of this invention. It is a perspective view showing one embodiment of the 2nd continuous type sand crushing device of the present invention. 5 is a graph showing an example of a crushed sand crushed and polished by a second continuous crushed sand polishing apparatus of the present invention by a sieve test. It is a front view showing one embodiment of a projection mass operation body. It is a front view showing one embodiment of a block operation body provided with a crevice. It is a front view showing one embodiment of a block operation body provided with a projection and a crevice.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Stone material 2 Primary crusher 3 Secondary crusher 4 Sizing machine 5-i (i = 1-3) Vibrating sieve 6-i (i = 1-5) Belt conveyor 7 Water sand 8 Water separator 9, 9C 9E Dry sand 9D Dry sand 10 Water 11-i (i = 1 to 3) Piping 12 Classifier 13 Press machine 14 Cake 15 Crude product 16 Drum type washer 17 Vibration body 18 Box body 19L, 19R Wall plate 20-i ( i = 1 to 4) semicircular container 20R rubber plate 21 (21L, 21R), 30, 34-i (i = 1 to 4) gutter 22 rib 23 partition 24 net 25-i (i = 1 to 4) Partition body 26 Plate 27 (27A, 27B, 27C, 27D) Lumped operating body 28 Sand 29 Receiving tray 31 Polishing device 33 Water supply pipe 35 Crushed sand fine crushing device 36 Main body of Lumped operating body 37 Projection of Lumped operating body 38 Cavities C-1, C-3 Ratio of raw material sand (before polishing) Comparative curves C-2, C-4 Example curves of products (after polishing) SGM Continuous sand crusher GS Products D Diameter of main body of massive operating body d1 Diameter of projection d2 Diameter of recess

Claims (9)

A continuous sand crushing device for making crushed sand produced in a crushed stone plant usable as cement aggregate as well as sea sand and river sand,
A gutter having a bottom surface substantially horizontal to the traveling direction;
A plurality of partition bodies that partition an intermediate portion of the gutter-like body,
A block operating body arranged in each partition room partitioned by each partition body,
A mesh network provided in the partition body, larger than the diameter of sand and smaller than the diameter of the massive operating body,
A vibrator for vibrating the entire gutter-like body at least up and down,
The continuous sand crushing sand characterized in that sand or water-mixed sand input to the partition chamber is mixed and contacted in water with the massive working body and sequentially sent to the next stage while being polished, and continuously polished. apparatus.   2. The continuous sand crushing device according to claim 1, wherein the vibrator has a vibrating element that jogs and sends sand or quicksand that has been sent to the gutter-like body sequentially toward an outlet side. 3. Continuous sand grinding machine.   3. The continuous sand crushing device according to claim 1, wherein the partition body has a lower portion formed of a mesh, and an upper portion formed of a plate member that prevents the flow of the quicksand. 4. .   The continuous sand crushing apparatus according to any one of claims 1 to 3, wherein the gutter-like body is formed with a step so that the next stage is sequentially positioned at a lower position for each partition chamber. Continuous grinding sand polishing equipment. A gutter-like body having a bottom surface substantially horizontal to the traveling direction and capable of charging dry sand or drained quicksand,
Provided on the outlet side of the gutter-like body, a mesh net having a diameter larger than the diameter of the sand charged into the gutter-like body and smaller than the diameter of the massive operating body charged for the purpose of finely pulverizing the sand,
A vibrating body that vibrates the entire gutter-like body at least up and down, and a crushed sand fine crushing device,
A gutter having a bottom surface substantially horizontal to the traveling direction;
A plurality of partition bodies that partition an intermediate portion of the gutter-like body,
A block operating body arranged in each partition room partitioned by each partition body,
A mesh network provided in the partition body, larger than the diameter of the quicksand, and smaller than the diameter of the massive operating body;
A vibrating body that vibrates the entire gutter-like body at least up and down, and a crushed sand polishing device configured by connecting the crushed sand crushed sand, the crushed sand of which the particle size has been adjusted by the crushed sand fine crushing device, to the crushed sand. A continuous crushed sand polishing apparatus characterized in that polishing is continuously performed by a polishing apparatus. Primary and secondary crushers and sizing machines, which sequentially crush the raw stones to obtain crushed sand of about 5 mm or less,
A vibrating sieve that is placed between these machines and sends the remaining stone material to the next stage except for the crushed sand component,
Water flowing means for applying water to the crushed sand output from each vibrating sieve and the sizing machine to generate a water flow mixed with crushed sand,
The sand mixed with water generated by the water flowing means is input, cut off excess water, the amount of crushed sand is adjusted to an amount just immersed in water, the quicksand generating means for generating the adjusted sand with the water flow,
The crushed sand polishing in which the quicksand generated by the quicksand generating means is input to the inlet side and output toward the outlet side, and the sand is gradually polished while jog-feeding the quicksand being output by the vibration of the massive operating body mixed in the quicksand. Device and
A continuous crushed sand production plant, characterized by continuously producing polished crushed sand products by successively performing a polishing treatment after the continuous crushed sand production by crushing the raw material stone. Primary and secondary crushers and sizing machines, which sequentially crush the raw stones to obtain crushed sand of about 5 mm or less,
A vibrating sieve that is placed between these machines and sends the remaining stone material to the next stage except for the crushed sand,
Water flow means for applying a water to the crushed sand output from each vibrating sieve and the sizing machine to generate a water flow mixed with crushed sand,
The sand mixed with water generated by the water flowing means is input, cut off excess water, the amount of crushed sand is adjusted to an amount just immersed in water, the quicksand generating means for generating the adjusted sand with the water flow,
A crushed sand fine crushing device for inputting sand which completely cuts water from the water-mixed sand generated by the water-streaming means, crushing the sand by vibration of a massive operating body mixed in the sand, and adjusting the particle size,
Next to the crushed sand pulverizing device, water is added to the sand whose particle size has been adjusted by the device to generate quicksand mixed with water, the quicksand is input to the inlet side and output toward the outlet side, and the Having a crushed sand polishing device that sequentially polishes while jog-feeding the sand that is being output by the vibration of the massive operating body mixed with
A continuous crushed sand production plant, characterized by continuously producing a crushed sand product by successively and continuously performing particle size adjustment and polishing treatment after the continuous crushed sand production by crushing the raw material stone. A bulk operating body that is used to grind or grind the granular material in response to rotation or at least up and down vibration of the container, which is mixed into the granular material put into the container,
A lump-shaped operating body having a lump-shaped main body and a plurality of irregularities provided on a surface thereof.   9. The massive operating body according to claim 8, wherein the unevenness is a projection.

Images