TWI765545B - Microwave mixing device - Google Patents

Abstract

A microwave mixing device is used for irradiating a mineral. The microwave mixing device includes a microwave cavity, a plurality of microwave generating parts, a conveying part and a driving device. The microwave cavity has an inlet and an outlet. The microwave generating elements are arranged in the microwave cavity, and each microwave generating element has a microwave emitting end. The microwave emitting end is arranged in the microwave cavity and emits microwaves into the microwave cavity. The conveying member is arranged in the microwave cavity and has a shaft body and a spiral plate. The spiral plate is arranged on the shaft body, and the shaft system extends from the feed port toward the discharge port. The driving device is connected to the shaft body and drives the shaft body to rotate. The rotation of the shaft drives the spiral plate to rotate, and the spiral rotation causes the mineral to move from the feed port to the discharge port, and the microwave generated by the microwave generating element irradiates the mineral.

Description

Microwave mixing device

The invention relates to the technical field of mineral processing, in particular to a microwave mixing device for mineral water removal.

Most of the extraction of various metals is to first extract ore or ore from the ore vein, and then transport the ore or ore to the refining unit or factory, and then extract the metal, such as iron ore, aluminum ore or nickel ore, etc. For some minerals with high water content, such as laterite-type bauxite and nickel ore, the existing treatment method is to directly transport the ore to the refining unit or factory of the destination, and carry out the processing in the refining unit or factory first. After removing the water, it enters the refining process.

This existing processing method allows the transport of high water content ore from the mining site to the refining plant, thereby increasing the transport weight, while reducing the volume of ore that can be transported each time for the same volume of cargo ships or trucks , resulting in an increase in the cost of transportation, and the refinery plant needs to build water removal equipment, which also increases the construction cost of the refinery plant and complicates the process.

In addition, the existing mine soil water removal equipment is to heat the mineral soil to remove water. Since the mineral soil contains clay and other highly viscous substances, the direct heating method can remove a limited amount of water within a given time.

In view of this, the object of the present invention is to provide a microwave mixing device. After the minerals are chopped by the mineral crushing device, the microwave mixing device of the present invention is used to irradiate microwaves to reduce the viscosity of the minerals, further refine the particle size of the minerals, and finally enter the rotary furnace for heating to greatly reduce the water content.

The microwave mixing device of the present invention is used for irradiating a mineral, and comprises: a microwave cavity, a plurality of microwave generating parts, a conveying part and a driving device. The microwave cavity has a feeding port and a feeding port. The microwave generating elements are arranged in the microwave cavity, each of the microwave generating elements has a microwave emitting end, and the microwave emitting end is arranged in the microwave cavity and emits microwaves toward the microwave cavity. The conveying member is arranged in the microwave cavity, and has a shaft body and a spiral plate, the spiral plate is arranged in the shaft body, and the shaft system extends from the feed port toward the discharge port. The driving device is connected to the shaft body and drives the shaft body to rotate. The rotation of the shaft body drives the spiral plate to rotate, the spiral plate rotates to move the mineral from the feed port to the discharge port, and the microwave generated by the microwave generating element irradiates the mineral.

The microwave mixing device of the present invention generates microwaves and then irradiates the minerals to reduce the viscosity of the minerals, further refine the minerals, and loosen the structure of the minerals. The soil's ability to retain water increases the heating area of the minerals in the subsequent heating process of the rotary furnace, and the water is easily separated from the mineral soil, making the water in the minerals easy to evaporate and greatly reducing the water content.

Please refer to FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , which show an embodiment of the first microwave mixing device or the second microwave mixing device of the present invention. The microwave mixing device 10 of the present invention includes a microwave cavity 11 , a plurality of microwave generating parts 12 and a conveying part 13 .

The microwave cavity 11 is a hollow cavity, which has a feeding port 111 and a feeding port 112 . The feeding port 111 and the discharging port 112 are respectively disposed at opposite ends of the microwave cavity 11 . The feeding port 111 has a feeding hopper 113 , and the feeding hopper 113 is upright facing upward. The minerals are guided by the feeding hopper 113 and enter the microwave cavity 11 through the feeding port 111 . The discharge port 112 faces below the microwave cavity 11 , and the minerals after microwave treatment leave the microwave cavity 11 from the discharge port 112 . As used herein, "above" refers to the direction away from the ground, and "below" refers to the direction toward the ground.

As shown in Figures 1 and 2, the microwave generating elements 12 are inserted into the shell of the microwave cavity 11, each microwave generating element 12 has a microwave emitting end, and the microwave emitting end is located in the microwave cavity 11, and the microwave emitting end is located in the microwave cavity 11. The end emits microwaves, and the microwaves are irradiated to the minerals delivered to the microwave cavity 11 , and since the microwave cavity 11 in this embodiment is made of metal, the microwaves can be continuously reflected by the microwave cavity 11 and repeatedly irradiated to the minerals. In this embodiment, the microwave cavity 11 is a polygonal cavity. As shown in FIG. 1 , the microwave cavity 11 is formed by twelve rectangular metal plate parts that are connected two by two along a circumscribed cylindrical surface to form a cylinder. In the upper half (180 degrees) of the six rectangular metal plates, each rectangular metal plate is provided with two columns of holes, so there are 12 columns of holes in total, and each hole is provided with a microwave Piece 12 is produced. In this embodiment, the microwave generating element 12 is a magnetron. The magnetron has a central cathode, an anode surrounding the central cathode, and magnets arranged at both ends of the cathode and the anode in the axial direction. A high voltage is applied between the cathode and the anode, and the cathode is heated, so that thermionic electrons are dissociated between the cathode and the anode. The magnetic field generated by the magnets at both ends generates microwaves in the resonant cavity between the cathode and the anode, and the generated microwaves are transmitted to the microwave cavity 11 through the antenna at the microwave transmitting end. Since the magnetron requires high voltage, a plurality of transformer devices 16 are arranged on both sides of the microwave cavity 11 to convert the voltage of the mains (110V or 220V) into the high voltage (4000V) required by the magnetron.

As shown in FIG. 4 , the conveying member 13 is arranged in the microwave cavity 11 . The conveying member 13 in this embodiment is a screw device, which includes a shaft body 131 and a spiral plate 132 , and the spiral plate 132 is along the axial direction of the shaft body 131 . set up. Both ends of the shaft body 131 are rotatably supported by bearings B, respectively. Please refer to FIG. 1 and FIG. 3 at the same time, one end of the shaft body 131 is connected to a driving device 17 , and the driving device 17 drives the shaft body 131 to rotate to make the spiral plate 132 rotate. In this embodiment, the driving device 17 is an electric motor. The output shaft of the driving device 17 is connected to the shaft body 131 via a coupling, so that the driving device 17 can drive the shaft body 131 to rotate.

Please refer to FIGS. 4 and 6, a plurality of air inlets 115 are provided at one end of the microwave cavity 11 close to the discharge port 112, and an exhaust port 116 is provided at the end of the microwave cavity 11 close to the feed hopper 113 , the air inlet 115 is provided with a plurality of airflow generating members 117. In this embodiment, the airflow generating member 117 is a fan, and the fan rotates to drive the air into the microwave cavity 11 to generate airflow in the microwave cavity 11. Air port 116 is exhausted.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the microwave cavity 11 , the microwave generating part 12 , the conveying part 13 , the transformer device 16 and the driving device 17 are arranged on a base 18 . The base 18 includes a support frame 181 , a plurality of bearing plates 182 and a working ladder 183 . As shown in FIG. 3 , in order to make the conveyance of minerals in the microwave cavity 11 smoother, the support frame 181 is set to have an inclined angle with the ground, and is inclined downward from the feed port 111 to the discharge port 112 . In this way, in addition to the conveying member 13 pushing minerals from the feeding port 111 to the discharging port 112 of the microwave cavity 11 , the minerals can also be transported from the feeding port 111 to the discharging port 112 by gravity using the inclined support frame 181 . . As shown in Fig. 1 and Fig. 2, the carrier plate 182 is arranged between the microwave cavity 11 and the transformer device 16 and on both sides of the driving device 17, and the working ladder 183 is erected on one side of the support frame 181. The operator can Climb to the carrying plate 182 via the working ladder 183 for maintenance or operation.

As shown in FIG. 5 , after the mineral pellets are put into the feeding hopper 113 , they enter the microwave cavity 11 through the feeding port 111 under the guidance of the feeding hopper 113 , and the conveying member 13 arranged in the microwave cavity 11 pushes the mineral material. The particles advance along the axial direction, and at this time, the microwave generating member 12 generates microwaves and emits the microwaves into the microwave cavity 11 to irradiate the mineral particles. The water molecules in the mineral particles are rotated by microwaves to oscillate the mineral molecules, thereby raising the temperature of the mineral particles. As the temperature rises, part of the water and the dust of the mineral particles rises to be suspended in the microwave cavity 11 , and the air flow generated by the airflow generator 117 in the microwave cavity 11 displaces the moisture and dust through the exhaust port 116 discharge. After the mineral particles are irradiated by microwave, the mineral particles will not only reduce the water content, but also make the structure of the mineral particles looser, reduce the viscosity of the mineral particles, and crack the mineral particles into smaller particle sizes. Small pellets.

As shown in FIG. 7 , the microwave generating element 12 of this embodiment is a magnetron, and a cooling module 19 is used to cool the anode of the magnetron. The cooling module 19 of the present embodiment is of a water-cooled type, which includes a water inlet pipe 191 and a drain pipe 192 . The water inlet pipe 191 and the drain pipe 192 are provided with a plurality of auxiliary pipes 193 , and each auxiliary pipe 193 is provided with a valve body 194 and passes through A hose 195 is connected to the microwave generating part 12 , and the auxiliary pipe 193 , the valve body 194 and the hose 195 form a water inlet connection pipe 196 and an outlet water connection pipe 197 . The anode of the microwave generator 12 is surrounded by a water jacket, and the cooling water passes through the water jacket from the water inlet pipe 191 through the water inlet connection pipe 196, and after absorbing the heat generated by the anode, the cooling water with increased temperature enters the drainage through the soft outlet water connection pipe 197 Tube 192. Thereby, the effect of dissipating heat from the anode of the microwave generating member 12 is achieved. The cooling module 19 is not limited to a water-cooled structure, but can also be an air-cooled structure. The air-cooled structure is to provide heat dissipation fins on the anode of the microwave generating element 12, and then introduce the air flow through the heat dissipation fins to achieve the effect of heat dissipation .

Fig. 8 shows another embodiment of the first microwave mixing device or the second microwave mixing device of the present invention. In this embodiment, the microwave generating elements 12 are arranged in a staggered manner on the microwave cavity 11 .

Fig. 9 shows yet another embodiment of the first microwave mixing device or the second microwave mixing device of the present invention. In this embodiment, the microwave generating elements 12 are arranged closely (with a small spacing) on the rectangular metal plate near the top of the microwave cavity 11 , and the microwave generating elements 12 are arranged on the rectangular metal plate near the bottom of the microwave cavity 11 . They are arranged more evacuated (larger spacing).

Please refer to Fig. 10, Fig. 11, Fig. 14, and Fig. 15, which are an embodiment of the mineral water removal device of the present invention. The mineral water removal device 100 of the present invention includes a mineral crushing device 20 , a first microwave mixing device 30 and a rotary furnace 40 . The mineral water removal equipment of this embodiment is suitable for ore soils with high viscosity and high water content (latterite bauxite, nickel soil). Minerals excavated from the mine have a water content of 30% to 35%.

The minerals are delivered to the mineral crushing device 20 , which includes a crushing piece that shreds the minerals so that the particle size of the minerals before entering the mineral crushing device 20 is larger than that after the minerals leave the mineral crushing device 20 . In this embodiment, the mineral crushing device 20 is a crusher, which can be a single-shaft, double-shaft or four-shaft crusher. After the minerals are chopped by the mineral pulverizing device 20 , particles with a particle size of less than 20 cm are formed, which are uniformly discharged and transported to the first microwave mixing device 30 .

The first microwave mixing device 30 may be the microwave mixing device shown in FIGS. 1 to 9 . The first microwave mixing device 30 includes a first microwave cavity (such as the aforementioned microwave cavity 11 ), a first conveying member (such as the aforementioned conveying member 13 ), and a plurality of first microwave generating parts (such as the aforementioned microwave generating parts) component 12), the first microwave generating components generate microwaves and transmit them into the first microwave cavity, and the output power of the first microwave mixing device is in the range of 100 kilowatts to 140 kilowatts. The first conveying member is arranged in the first microwave cavity, and conveys the minerals from the feed port of the first microwave cavity to the discharge port. The first microwave mixing device 30 is for minerals. Through the first microwave mixing device 30, the temperature of the minerals can be increased by microwaves to remove part of the water, so that the water content is slightly reduced to 31%, and the bonds of crystal water are broken. The viscosity of the minerals is destroyed, the organic matter in the mineral soil is decomposed and no longer intertwined with each other, and the particle size of the minerals is reduced.

As shown in FIG. 11 and FIG. 13 , the rotary furnace 40 includes a rotary furnace body 41 and a heater 42 . The minerals enter the rotary furnace body 41 and rotate with the rotary furnace body 41 , and the heater 42 is opposite to the rotary furnace body 41 . The internal mineral heating. There is a roller 43 under the rotary furnace body 41 , the roller 43 is driven to rotate by a motor, and the rotary furnace body 41 is supported by the roller 43 and rotates with the roller 43 . The roller 43 is set on a base 44, and the base 44 is set to have an inclination angle relative to the ground, so that the minerals can move in the rotary furnace body 41 by gravity to achieve the conveying effect. The height of the feed port 411 of the rotary furnace body 41 relative to the ground is greater than the height of the discharge port 412 of the rotary furnace body 41 relative to the ground. The heater 42 is a diesel burner and is arranged at the end of the rotary furnace body 41. The heater 42 generates a flame in the rotary furnace body 41 and heats the minerals moving in the rotary furnace body 41 to 430 ^o C to 470 ^o C In order to remove the moisture of the minerals, the minerals pass through the rotary furnace 40 to form grains with a moisture content in the range of 12% to 17% and a mineral particle size of less than 1.5 cm. FIG. 12 is a graph of the temperature of the rotary furnace 40 and the distance from the feed port 411 in the present embodiment. It can be seen from FIG. 12 that the temperature in the middle part of the rotary furnace 40 is the highest, exceeding 700 degrees Celsius, and the temperature at the inlet 411 and the outlet 412 is the lowest, between 200 and 300 degrees Celsius.

As shown in Figures 10 and 14, the mineral water removal equipment 100 of the present invention further includes a second microwave mixing device 50, and the mineral particles processed by the first microwave mixing device 30 are transported to the second microwave mixing device The apparatus 50, the second microwave mixing apparatus 50 may be the microwave mixing apparatus as shown in FIGS. 1 to 11 . The second microwave mixing device 50 includes a second microwave cavity (such as the aforementioned microwave cavity 11 ), a second conveying member (such as the aforementioned conveying member 13 ), and a plurality of second microwave generating members (such as the aforementioned microwave generating member) 12), the second microwave generating members generate microwaves and transmit them into the second microwave cavity, and the output power of the second microwave mixing device is in the range of 60 kilowatts to 100 kilowatts. The second conveying member is arranged in the second microwave cavity, and conveys the minerals from the feed port of the second microwave cavity to the discharge port. The second microwave mixing device 50 is for minerals. Through the second microwave mixing device 50, the temperature of the minerals can be increased by microwave to remove part of the water again, so that the water content is slightly reduced to 30%, and the crystal water is interrupted at the same time. The bonding of the minerals destroys the viscosity of the minerals and reduces the particle size of the minerals, and the minerals form particles with a particle size of less than 4 cm when they are output through the second microwave mixing device 50 . After the minerals are irradiated with microwaves through the second microwave mixing device 50 , they are transported to the above-mentioned rotary furnace 40 .

其中E _w為 蒸發速率(mm/day)，Δ為飽和蒸汽壓與溫度關係的斜率，R _n為淨輻射(W/m ²)，γ為乾溼表常數(kPa/˚C)，u _w為風速(km/hr)，e _aw為土體表面蒸氣壓(mm-Hg)，A為空氣相對溼度的倒數，B為土體表面相對溼度的倒數。 The coupling model of soil moisture evaporation rate is shown in the following two relations:

where E _w is the evaporation rate (mm/day), Δ is the slope of the relationship between saturated vapor pressure and temperature, R _n is the net radiation (W/m ² ), γ is the psychrometric constant (kPa/˚C), u _w is the wind speed (km/hr), _eaw is the vapor pressure of the soil surface (mm-Hg), A is the reciprocal of the relative humidity of the air, and B is the reciprocal of the relative humidity of the soil surface.

When the mineral water removal equipment 100 of the present invention processes the minerals in the devices of each treatment stage, the theoretical value of the water content of the mineral in each stage (the data calculated by the above-mentioned soil moisture evaporation rate coupling model) and the experimental value ( The comparison of the actual data) is as follows:

FIG. 15 shows another embodiment of the mineral water removal apparatus 100 of the present invention. This embodiment has a part of the same structure as that of the embodiment shown in FIG. 15, and the same elements are given the same symbols and their descriptions are omitted. The difference between this embodiment and the embodiment shown in FIG. 15 is that this embodiment further includes a feeding device 60 and a conveying device 70 , and minerals are fed into the feeding device 60 by an excavator, so as to avoid directly feeding minerals into the mineral crushing device 20 . impact on the equipment. The minerals are transported to the mineral crushing device 20 from the feeding device 60 . In this embodiment, the feeding device 60 may be a vibrating feeder, and the conveying device 70 may be a conveyor belt, and the minerals heated by the rotary furnace 40 are conveyed to a transport device 80, such as a cargo ship or a truck, through the conveying device 70.

The microwave mixing device of the present invention generates microwaves and then irradiates the minerals to reduce the viscosity of the minerals, further refine the minerals, and loosen the structure of the minerals. The soil's ability to retain water increases the heating area of the minerals in the subsequent heating process of the rotary furnace, and the water is easily separated from the mineral soil, making the water in the minerals easy to evaporate and greatly reducing the water content.

However, the above are only preferred embodiments of the present invention, and should not limit the scope of implementation of the present invention, that is, any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the description of the new model, All still fall within the scope of the patent of the present invention. In addition, any embodiment of the present invention or the scope of the claims is not required to achieve all of the objects or advantages or features disclosed herein. In addition, the abstract section and the title are only used to aid the search of patent documents and are not intended to limit the scope of the present invention. In addition, terms such as "first" and "second" mentioned in this specification or the scope of the patent application are only used to name the elements or to distinguish different embodiments or scopes, and are not used to limit the number of elements. upper or lower limit.

10: Microwave mixing device 11: Microwave cavity 12: Microwave generator 13: Conveyor 16: Transformer device 17: Drive unit 18: Pedestal 19: Cooling Module 20: Mineral crushing device 30: The first microwave mixing device 40: Rotary furnace 41: Rotary furnace body 42: Heater 43: Roller 44: Pedestal 50: Second microwave mixing device 60: Feeding device 70: Conveyor 80: Transport equipment 100: Mineral water removal equipment 111: Feed port 112: discharge port 113: Feed Hopper 115: Air intake 116: exhaust port 117: Airflow generating parts 131: Shaft 132: Spiral Plate 181: Support frame 182: Carrier plate 183: Working Ladder 191: water inlet pipe 192: Drainpipe 193: Deputy 194: valve body 195: Hose 196: Inlet connection pipe 197: outlet connection pipe 411: Feed port 412: Outlet B: Bearing

FIG. 1 is a perspective view of an embodiment of the first microwave mixing device or the second microwave mixing device of the present invention. FIG. 2 is a top view of the first microwave mixing device or the second microwave mixing device of FIG. 1 . FIG. 3 is a front view of the first microwave mixing device or the second microwave mixing device of FIG. 1 . FIG. 4 is a cross-sectional view of the first microwave mixing device or the second microwave mixing device of FIG. 1 . Fig. 5 is a schematic diagram of the first microwave mixing device or the second microwave mixing device of Fig. 1 performing microwave mixing treatment on minerals. FIG. 6 is a rear view of the first microwave mixing device or the second microwave mixing device of FIG. 1 . FIG. 7 is an enlarged view of the microwave generating member of the first microwave mixing device or the second microwave mixing device of FIG. 1 . Figure 8 is a cross-sectional view of another embodiment of the first microwave mixing device or the second microwave mixing device. Figure 9 is a cross-sectional view of yet another embodiment of the first microwave mixing device or the second microwave mixing device. FIG. 10 is a schematic diagram of an embodiment of the mineral water removal equipment of the present invention. FIG. 11 is a schematic diagram of an embodiment of the rotary furnace of the mineral water removal equipment of FIG. 10 . Fig. 12 is a graph showing the distance and temperature between the inside of the rotary furnace and the feed port of Fig. 11 . Fig. 13 and Fig. 10 are schematic diagrams showing that the rotary furnace of the mineral water removal equipment heats the minerals. FIG. 14 is a schematic diagram of an embodiment of the process of removing water from minerals through the mineral water removing equipment of the present invention. FIG. 15 is a schematic diagram of another embodiment of the process of removing water from minerals through the mineral water removing equipment of the present invention.

10: Microwave mixing device

11: Microwave cavity

12: Microwave generator

16: Transformer device

17: Drive unit

18: Pedestal

113: Feed Hopper

116: exhaust port

181: Support frame

182: Carrier plate

183: Working Ladder

B: Bearing

Claims (8)

A microwave mixing device for irradiating a mineral with microwaves, the microwave mixing device (10) comprising: a microwave cavity (11) having a feeding port (111) and a feeding port (112); A plurality of microwave generating parts (12) are arranged in the microwave cavity (11), each of the microwave generating parts (12) has a microwave emitting end, and the microwave emitting end is arranged in the microwave cavity (11), and Microwaves are emitted into the microwave cavity (11); a conveying member (13) is arranged in the microwave cavity (11) and has a shaft (131) and a spiral plate (132), the spiral plate (132) The shaft body (131) is arranged on the shaft body (131), and the shaft body (131) extends from the feed port (111) toward the discharge port (112); and a driving device (17) is connected to the shaft body (131) and drive the shaft (131) to rotate; wherein the rotation of the shaft (131) drives the spiral plate (132) to rotate, and the spiral plate (132) makes the mineral move from the feeding port (111) to the a discharge port (112), and the microwave generated by the microwave generating member (12) is irradiated to the mineral; the microwave cavity (11) is a polyhedron with a plurality of surfaces formed by connecting a plurality of rectangular plate members two by two, Some of the rectangular plate members have a plurality of holes, the microwave generating members (12) are arranged in the holes, and the microwave generating members (12) are arranged along the shaft (12) of the conveying member (13). 131) are arranged in a plurality of rows; and the number of the microwave generating parts (12) on the surface of the top of the microwave cavity (11) is greater than the number of the microwave generating parts (12) on the other surfaces. quantity. The microwave mixing device according to claim 1, wherein the microwave generating elements (12) in two adjacent rows are aligned with each other. The microwave mixing device according to claim 1, wherein the microwave generating elements (12) in two adjacent rows are staggered with each other. A microwave mixing device for irradiating a mineral with microwaves, the microwave mixing device (10) comprising: a microwave cavity (11) having a feeding port (111) and a feeding port (112); A plurality of microwave generating parts (12) are arranged in the microwave cavity (11), each of the microwave generating parts (12) has a microwave emitting end, and the microwave emitting end is arranged in the microwave cavity (11), and Microwaves are emitted into the microwave cavity (11); a conveying member (13) is arranged in the microwave cavity (11) and has a shaft (131) and a spiral plate (132), the spiral plate (132) The shaft body (131) is arranged on the shaft body (131), and the shaft body (131) extends from the feed port (111) toward the discharge port (112); and a driving device (17) is connected to the shaft body (131) and drive the shaft (131) to rotate; wherein the rotation of the shaft (131) drives the spiral plate (132) to rotate, and the spiral plate (132) makes the mineral move from the feeding port (111) to the a discharge port (112), and the microwave generated by the microwave generating member (12) is irradiated to the mineral; the microwave cavity (11) is a polyhedron with a plurality of surfaces formed by connecting a plurality of rectangular plate members two by two, Some of the rectangular plate members have a plurality of holes, the microwave generating members (12) are arranged in the holes, and the microwave generating members (12) are arranged along the shaft (12) of the conveying member (13). 131) are arranged in a plurality of rows; and the microwave generating elements (12) are arranged within an angle range of 180 degrees of the upper half of the microwave cavity (11). The microwave mixing device according to claim 4, further comprising a cooling module (19) comprising a water inlet pipe (191), a drain pipe (192), a plurality of water inlet connection pipes (196) and a plurality of A water outlet connection pipe (197), the water inlet connection pipes (196) and a plurality of water outlet connection pipes (197) are divided into are respectively connected to the microwave generating elements (12), cooling water enters the microwave generating elements (12) from the water inlet pipe (191) through the water inlet connecting pipes (196) respectively, and the cooling water is generated from the microwaves Pieces (12) enter the drain pipe (192) through the outlet connection pipes (197). A microwave mixing device for irradiating a mineral with microwaves, the microwave mixing device (10) comprises: a microwave cavity (11), which has a feeding port (111) and a feeding port (112) a plurality of microwave generating parts (12), arranged in the microwave cavity (11), each of the microwave generating parts (12) having a microwave emitting end, and the microwave emitting end is arranged in the microwave cavity (11), and emits microwaves into the microwave cavity (11); a conveying member (13), disposed in the microwave cavity (11), has a shaft (131) and a spiral plate (132), the spiral plate (132) ) is arranged on the shaft body (131), and the shaft body (131) extends from the feed port (111) toward the discharge port (112); and a driving device (17) is connected to the shaft body (131) and drive the shaft body (131) to rotate; wherein the rotation of the shaft body (131) drives the spiral plate (132) to rotate, and the spiral plate (132) makes the mineral move from the feeding port (111) to the the discharge port (112), and the microwave generated by the microwave generator (12) is irradiated to the mineral; the microwave mixing device (10) further comprises a base (18), the base (18) includes a support A frame (181), the support frame (181) is set to have an inclined angle with the ground, and the microwave cavity (11) is set on the support frame (181), so that the microwave cavity (11) is removed from the feed port (111) to the discharge port (112) is inclined downward; and the base (18) further comprises a plurality of bearing plates (182) and a working ladder (183), the bearing plates (182) are arranged on the The supporting frame (181) is located on one side of the microwave cavity (11) and on both sides of the driving device (17), and the working ladder (183) is erected on one side of the supporting frame (181). The microwave mixing device according to claim 6, further comprising a transformer device (16) electrically connected to a power source and the microwave generating parts (12), the transformer device (16) to the power source The voltage is converted into a voltage at which the microwave generating element (12) is actuated. The microwave mixing device according to claim 6, wherein the microwave generating element (12) is a magnetron.

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