JP2000043045A - Separation and recovery equipment for plastics and inorganics from plastic / inorganic composite waste - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rapidly and sufficiently separately recover plastic and inorganic material by lifting the material precipitated in a bottom of a drum by a rotary lifter, discharging it out of the drum, and receiving a heating medium and the plastic fed out of an outlet. SOLUTION: Crushed material is supplied into a drum 1 in which a heating medium is charged, and mixed with the medium by means of rotation of the drum 1. The material is heats-treated in the drum 1, and separated into an inorganic material and a plastic. At this time, the plastic of a molten state is floated, overflowed from an outlet 21, fed into an organic material recovery trough 22, and conveyed by an organic material transfer conveyor 23. Meanwhile, the inorganic material precipitated in a bottom of the drum is scooped by a scoop 14 of a rotary liter 13, raised, dropped in the vicinity of its top, received by an inorganic material recovery trough 16, and conveyed via an inorganic material transfer conveyor 17. A partition plate 18 for preventing moving of the floated plastic to a feeding passage of a scoop 14 is mounted on a lower surface of the trough 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for treating waste plastic, and more particularly to a method for quickly and easily treating a metal composite waste plastic in which metal and plastic are intertwined with each other, such as waste automobiles and waste home appliances. The present invention relates to an apparatus for recovering an inorganic substance such as a metal contained therein as a metal source or another inorganic substance source, and recovering plastic as a resource such as a reducing material for a blast furnace or a fuel.

[0002]

2. Description of the Related Art In recent years, synthetic resins such as plastics have been increasing as industrial wastes and general wastes, and their disposal has become a serious social and environmental problem. In particular, shredder dust generated from end-of-life vehicles and end-of-life home appliances is a mixture of various substances. It contains plastic, metal, rubber, wood, paper, glass, etc., and has low bulk density. , Is a waste that is difficult to treat.

[0003] The plastic component, which generates a large amount of heat during combustion, requires special incineration equipment due to problems such as damage to the furnace wall of the incinerator when incinerated, and is contained in dust. Also, there is a problem that harmful metals such as zinc and lead need to be recovered and fixed.
Under such circumstances, dumping is currently performed. However, dumping causes deterioration of the landfill and is not environmentally preferable. Also, in recent years, securing of land for landfills has become a social problem along with soaring processing costs. Therefore, development of a large-scale processing method of inorganic material composite waste plastic, for example, shredder dust, which does not rely on dumping, has been desired.

As a method for treating this waste plastic, 2
There is known a method of heating and melting a low melting point metal or alloy having a melting point of 00 ° C. to 400 ° C., and immersing and decomposing waste plastic for a certain period of time (Japanese Patent Application Laid-Open No. 50-9).
677). This method has been developed as a method for dehydrochlorinating a polyvinyl chloride resin prior to incineration because harmful hydrogen chloride is generated when the resin is treated in an incinerator.

Further, a method is known in which an edible oil waste liquid, a waste oil such as a lubricating oil or a cleaning oil is used as a solvent, and a resin having adhesiveness such as polyethylene is dissolved in the oil and removed from the metal material to extract the metal. (Japanese Unexamined Patent Publication Nos. 5-147041 and 9-268297).

A composite waste plastic containing polyvinyl chloride is put into a plastic melt at 250 to 300 ° C. to remove dechlorinated carbides of the polyvinyl chloride floating on the surface of the melt and to remove the vinyl chloride to recover the plastic. A known method is also known (Japanese Patent Application Laid-Open No. 6-210263).

Further, a molten salt at a temperature of 250 to 300 ° C. at which the plastic material is fluidized is used, and the molten salt is controlled to the above-mentioned temperature by heating.
The plastic waste is separated by putting the plastic waste into an atmosphere heated at a high temperature of 5 ° C to 5 ° C, and the plastic material that has been fluidized floats on the liquid surface of the molten salt. There is also known a method of separating and recovering a plastic waste using molten salt, in which a material is settled and a plastic material and a metal material or a glass material are respectively taken out (JP-A-8-108165).

[0008]

One of the common problems of these prior arts is that the separation speed between the plastic and the inorganic material is low. That is, since the separation of the plastic and the inorganic material is performed in a heat medium having a large viscosity, the separation speed of the plastic is low, which lowers the efficiency of the processing apparatus,
If the processing speed is increased, there is a problem that separation becomes insufficient.

An object of the present invention is to solve the above problems and to provide an apparatus capable of quickly and sufficiently separating and recovering plastic and inorganic substances from composite waste of plastic and inorganic substances.

[0010]

Means for Solving the Problems The inventors of the present invention have made intensive studies to solve the above-mentioned problems, and as a result, have found a device capable of efficiently separating plastic and inorganic substances from composite waste of plastic and inorganic substances using a rotating drum. The inventors have devised and completed the present invention.

That is, the present invention provides a rotary drum containing a heat medium for immersing a composite waste containing a plastic and an inorganic material to separate the plastic and the inorganic material from each other, and supplying the heat medium to one side of the drum. A mechanism, a rotary lifter installed in the drum for scooping and pulling up the inorganic substances settling at the bottom of the drum, and an inorganic substance recovery gutter for receiving the inorganic substances released and falling near the top of the rotary lifter and discharging the inorganic substances to the outside of the drum. A member for preventing the floating plastic installed in the drum from moving to the traveling path of the rotary lifter, and a heat medium and plastic flowing out of an outlet provided on the other side of the drum. An apparatus for separating and recovering plastic and inorganic matter from plastic / inorganic composite waste, comprising an organic matter collecting gutter to be received, the above-described apparatus for separating and recovering, A supply device for supplying a composite waste containing a plastic and an inorganic substance into a ram, a solid-liquid separation device connected to the organic material recovery gutter, and a mechanism for returning the heat medium separated by the solid-liquid separation device to a drum A magnetic separator for separating iron from inorganic substances discharged from the inorganic substance collecting gutter, an electrostatic separator for separating non-ferrous metals from the inorganic substances from which iron has been separated, and an eddy current separating apparatus for separating aluminum from the non-ferrous metals The present invention relates to an apparatus for separating and recovering plastic and inorganic substances from plastic / inorganic composite waste, comprising an apparatus.

[0012]

DETAILED DESCRIPTION OF THE INVENTION The type of composite waste containing plastics and inorganic substances to which the present invention can be applied is not limited, but, for example, waste automobiles, waste home appliances, waste OA equipment and the like are applicable. Although these plastic / inorganic composite wastes can be treated as they are, it is preferable to shred them with a shredder or the like. The size of the strip is 0.01
It is preferably about 100 mm, particularly about 0.05 mm to 50 mm. Shredder dust, which is shard-like waste obtained by crushing scrap cars and scrap home appliances with shredders, guillotines, shears, and the like to collect metals, can also be suitably used. Its main components are plastic, fiber, iron, copper, aluminum, rubber, glass and the like. The type of plastic is not particularly limited, and thermoplastic resins such as polyethylene, polypropylene, chlorinated polyethylene, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamide, and polycarbonate, and thermosetting resins such as rubber, epoxy resin, and polyurethane. It is a resin or the like. Examples of plastic / inorganic composite waste mainly composed of inorganic substances other than metals include optical cables and FRP.

The heat medium exists as a liquid at a temperature at which the plastic of the plastic / inorganic composite waste is melted or decomposed and separated from the inorganic substance, and may be a low melting point alloy, an edible oil waste liquid, a molten plastic, a molten salt, or the like. is there. However, when a molten metal is used as a heat medium, it is difficult to separate the harmful components from the metal during the metal refining process. Because molten plastic has a high melt viscosity, metals mixed as foreign substances into composite waste plastics are mixed into plastics.
It is not easy to separate and recover metals. In addition, in the method using molten salt, the metal to be recovered is accompanied by an alkali which is a component of the molten salt and causes deterioration of the furnace wall of the melting furnace. There is a problem that it becomes difficult to separate the sedimented metal composite waste plastic from the metal.

On the other hand, the present inventors have found that certain organic media are free of such problems and are very advantageous for separating plastic from plastic / inorganic composite waste. The material used as the organic medium exists as a liquid at the immersion temperature of the composite waste, and there is no harmful component such as an alkali salt that becomes harmful when the separated metal is melted,
It can also be fuel. In addition, at this immersion temperature, it is necessary that physical properties such as viscosity do not change at least with little decomposition, and that separation from separated metals and other inorganic materials is easy. Further, it is desirable that the separated polymer floats and separates from the organic medium. Those satisfying these conditions have a boiling point of 250 ° C. or higher and an aromatic index of 0.2 or higher. Preferably, the boiling point is at least 300 ° C, particularly preferably at least 350 ° C. On the other hand, the upper limit of the boiling point is determined from its thermal stability, and is preferably 600 ° C or less, particularly preferably 550 ° C or less. The aromatic index is the ratio of the number of aromatic carbon atoms to the total number of carbon atoms, and is determined by the Brown-Ladner method (JK Brown, WR Ladner and N.M.
It can be measured by Sheppard, Fuel, 39 , 79 (1960). The aromatic index is preferably 0.2
Above, particularly preferably 0.25 or more, the upper limit being 1.
It is preferably 0 or less, particularly preferably 0.95 or less. To be concrete, coal tar heavy oil, pitch,
Coal liquefied oil, petroleum-based vacuum residue from a specific oil type (having a large amount of aromatic components such as cuffs), ethylene bottom oil, reformed oil, FCC oil, and the like. In particular, coal tar heavy oil having a low sulfur content is desirably used from the viewpoint of exhaust gas treatment in a melting furnace.

[0015] It is preferred to use a plastic cracking catalyst to facilitate the transfer of the polymer into the organic medium.
As a plastic decomposition catalyst, an acid catalyst such as Lewis acid or Bronsted acid can be used, and solid acids such as silica-alumina-based or zeolite-based FCC catalysts and hydrocracking catalysts which are industrially used, Alkylation catalysts such as concentrated sulfuric acid, HF, and AlCl ₃ can also be used. It is desirable to recover the cracking catalyst after treatment and reuse it.
It is also preferable to use an industrially used catalyst in one way. The amount of catalyst used is about 0.5 to 50 wt%,
Preferably, it is used in the range of 1 to 30 wt%. When the amount of the catalyst is low, the thermal decomposition performance is not exhibited, and when the amount is large, it is difficult to disperse and transfer the catalyst in the medium. The plastic decomposition catalyst is usually added to the organic medium before or at the time of immersion of the waste polymer containing an inorganic material, but may be added later depending on the situation judgment. In the method of the present invention, the polymer is usually not completely decomposed even when a plastic decomposition catalyst is used, and a part of the polymer remains.

The rotating drum is placed horizontally, and at least the peripheral edges of both end faces are closed so that a liquid tank can be formed therein. The installation is not limited to horizontal, but may be inclined slowly. The rotation drum is driven from the outside of the drum in principle. Examples of the driving means include a method in which a driving roller is brought into contact with the outer peripheral surface of the drum, and a method in which a gear is formed on the outer peripheral surface of the drum and the driving gear meshes with the gear. An appropriate rotation speed of the drum is about 1 to 50 rpm. Further, it is preferable that at least the inside of the drum is shielded from the outside air and the inside is set to a non-oxidizing gas atmosphere. This is to prevent deterioration due to oxidation of the resin and to prevent generation of harmful substances such as dioxin when the plastic is a chlorine-containing resin. Therefore, the opening of the drum is made as small and small as possible, and a non-oxidizing gas supply means is provided so that the inside is filled with the non-oxidizing gas. The non-oxidizing gas may be any gas such as nitrogen, helium, carbon dioxide, etc., but nitrogen is inexpensive and simple. It is also effective to provide a non-oxidizing gas chamber upstream of the heat treatment chamber to prevent air from entering the heat treatment chamber. The outer wall of the drum is preferably an insulating wall to reduce heat loss.

In the drum, a means for supplying the heat medium to one end side is provided so that the heat medium flows from one end to the other end. The supply means includes a heat medium tank, a heat medium liquid sending means (such as providing a tank at a high place or a liquid sending pump), and a liquid sending pipe or a groove. When the heating medium is solid at room temperature, a heater may be required. When the drum is long, the heat medium can be supplied to the center of the drum and discharged from both ends. The supply is preferably performed by passing the drum near one end near the central axis.

The rotary lifter is installed in the drum and scoops and lifts the inorganic substance settling at the bottom of the drum, and is composed of a scooping tool and a connecting member provided as necessary. The scooping tool has a shape capable of holding an inorganic substance and has a liquid passage so that the inorganic substance can be filtered out. For example, a straight plate, an arc-shaped plate, a long box-shaped container or the like made of a wire mesh, a plate having many pores, or the like is suitable. The rotation direction of the rotary lifter may be either forward or reverse with respect to the rotary drum, and the number of rotations may be arbitrary. However, it is preferable that the rotary lifter is fixed to the rotary drum and uses the rotation to simplify the structure.
Since the inorganic substances separate from the plastic and settle, the sedimentation often occurs on the downstream side of the drum. Therefore, the scooping device may be provided on the downstream side, particularly on the downstream side when the outlet for the non-oxidizing gas is provided on the upstream side. However, for long-term stable operation, it is preferable to provide it over substantially the entire length.

When the scooping tool of the rotary lifter approaches the top of the lifter, the inclination of the scooping tool increases, and the scooping tool eventually reverses, so that the inorganic substances scooped near the top of the lifter are discharged and dropped. Therefore, an inorganic material collecting gutter for receiving the inorganic material and discharging the inorganic material to the outside of the drum is provided at the location where the inorganic material falls. The heating medium is attached to the inorganic material, and the heating medium attached to the scooping tool also drops.Therefore, if the bottom surface of the inorganic material collection gutter is inclined, the inorganic material can also be allowed to flow along with the outflow of the heating medium. it can. The outlet of the inorganic recovery gutter may be on either end of the drum.

The plastic separated from the inorganic substance in the drum floats on the surface of the heat medium in a molten state. When the molten plastic enters the travel path of the scooping tool of the rotary lifter, it adheres to the scooping tool and enters the inorganic substance collecting gutter, and therefore a member for preventing the molten plastic from entering the travel path is provided. For this, a partition plate or the like for partitioning the traveling path from the center side of the drum may be provided.

In the present invention, a liquid flow is generated in the drum, and the heat medium and the plastic flow out of the end of the drum. Therefore, the outlet is provided with an organic matter collecting gutter for receiving the flowing out heat medium and plastic. It is also possible to adopt a method in which a heat medium is supplied from the center of the drum, and organic substance collecting gutters are provided at both ends of the drum.

The heating medium is heated to a temperature at which the plastic can be separated from the inorganic substance, and a heating mechanism for that purpose is provided. This heating mechanism may be based on any means such as steam and electricity, and may be provided inside or outside the drum. If there is a heat source available around the apparatus, a heat exchanger or the like may be provided and used. It goes without saying that the organic medium itself can be used as long as it has the necessary temperature during its production.

The immersion temperature and the residence time are usually determined so that the melting and decomposition of the polymer proceed sufficiently. The immersion temperature and the residence time vary depending on the type and amount of the polymer.
℃, preferably at 250 to 350 ℃, 0.5 to 30
About a minute, preferably about 1.5 to 15 minutes is appropriate. At this time, the decomposition behavior differs depending on the type of the polymer, but it generally melts, and the main chain of the polymer is broken by catalytic decomposition, the molecular weight is reduced, and gasification occurs. In the case of polyvinyl chloride resin, almost all chlorine is HCl.
Can be removed. The molten polymer floats and separates in the organic medium used in the present invention because of its low solubility,
On the other hand, inorganic substances having a high specific gravity settle. At the same time, some plastics, foamed resin such as polyurethane, fibers and rubbers are partially decomposed, and their volumes are reduced, so that separation from metals and inorganic substances becomes easy. In the case of vinyl chloride, dehydrochlorination also occurs due to thermal decomposition, and thermally decomposed char is generated together with the generation of HCl.

As the apparatus described above, an apparatus for continuously supplying composite waste, an apparatus for separating recovered organic matter from a heat medium, an apparatus for separating various inorganic substances, and the like can be used. For example, the following devices can be used.

(1) Feeding device The feeding device comprises a raw material hopper and a feeding device such as a rotary feeder, a circle feeder, or a screw feeder, and continuously feeds waste into the drum. Although the waste can be treated as it is depending on its form, it is equipped with a crusher before feeding it into the drum,
After grinding to 200 × 200mm or less, coarse iron exceeding 200mm is removed by magnetic separation, and the iron is removed by a vibrating sieve or a wind separator.
It is also possible to remove coarse substances exceeding 00 mm.

(2) Organic matter recovery apparatus This apparatus comprises a solid-liquid separator for removing and recovering the heat medium from the collected organic matter, and a circulation line for circulating the heat medium. Solid-liquid separators include vibrating sieves, centrifuges, filter presses,
This is a device selected from a screw press or the like, in which a heat medium accompanying organic substances is removed and recovered. The heat medium recovered here is transferred to a heater of the heat medium by a circulation line and reused.

(3) Inorganic substance recovery apparatus This apparatus is a solid-liquid separation apparatus for removing and recovering the heat medium from the recovered inorganic substance, a circulation line for circulating the heat medium, and a magnetic separator for separating the iron from the recovered inorganic substance after removing the heat medium. And an electrostatic separator for separating non-ferrous metal from the inorganic substance from which iron has been separated, and an eddy current separator for separating aluminum from the non-ferrous metal. The solid-liquid separation device is a device selected from a vibrating sieve, a centrifugal separator, a filter press, a screw press, and the like. Here, the heat medium accompanying the inorganic substance is removed and collected. The heat medium recovered here is transferred to the heater by a circulation line and reused. Iron is recovered from the recovered inorganic material by a magnetic separation device such as a magnetic drum or a magnetic belt type magnetic separator. An inorganic material from which iron has been separated by a magnetic separation device is separated into a non-ferrous metal and a non-metal by an electrostatic separation device. The non-ferrous metal mainly composed of aluminum and copper is recovered from the non-ferrous metal using an eddy current sorter.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus for recovering organic and inorganic substances from waste, which is an embodiment of the present invention, will be specifically described below with reference to FIGS.

FIG. 1 is a diagram showing an outline of the structure of a drum-type separation and recovery device, showing the connection relationship between an auxiliary equipment and an axial vertical section, and FIG. 2 is a longitudinal section of the drum-type separation and recovery device in a direction perpendicular to FIG. It is the figure which showed the surface.

The drum 1, which is the main body of the drum type separation / recovery apparatus, is closed in a liquid-tight manner at both ends, leaving a central opening, and a lower portion is a liquid tank portion 2 for storing a heat medium. A heat insulating layer 3 is provided on the outer periphery of the drum 1. The drum 1 is mounted on a gantry 4 and is rotated by rollers 5 connected to two long driving motors and a chine or a belt. A nitrogen gas blowing pipe 6 for making the inside of the drum a non-oxidizing gas atmosphere enters the drum 1 from the central opening on the left side of the drawing and extends to the bottom, and a number of blowing ports 7 are provided at the tip thereof.

The line for supplying the composite waste to the drum comprises a crusher 8, a hopper 9 for receiving the crushed composite waste, and a feeder 10 for supplying the crushed substance into the drum 1 from the bottom of the hopper 9. The central opening on the left side of the drum 1 in FIG. 1 is occupied by the feeder 10 and the nitrogen gas blowing pipe 6, and the space between the central opening end of the drum and the feeder 10 is sealed and sealed.

The heating medium is put into a heating medium tank 11, which passes through a heater 12 and feeder 1.
0 is connected to the discharge side.

A rotary lifter 13 is attached to the inside of the drum 1 for scooping and pulling up inorganic substances settling at the bottom.
As shown in FIG. 2, the lifter 13 is made of wire mesh and has a cylindrical shape, and a plurality of turbine blade type scooping tools 14 are attached at equal intervals inside. This scooping tool 14 is also made of wire mesh.
The lifter 13 is fixed to the drum 1 and rotates together with the drum 1.

Below the top of the rotary lifter 13 is a scoop 1
An inorganic material recovery gutter 16 is provided for receiving the inorganic material 15 falling from 4. The inorganic material collecting gutter 16 extends out of the drum 1 from the central opening on the right side in FIG. 1, and the bottom surface is an inclined surface that descends toward the outlet. On the lower surface of the inorganic substance collecting gutter 16, two partition plates 18 for preventing floating plastic from moving to the traveling path of the scooping tool 17 are attached. The inorganic substances discharged from the gutter 16 are transported by a closed type inorganic substance transport conveyor 17. An exhaust gas line 19 is provided in the casing of the inorganic substance transfer conveyor 17.
The exhaust gas line 19 is connected to a scrubber 20.

The discharge end of the inorganic substance transfer conveyor 17 is connected to a solid-liquid separation device 26. The liquid outlet side of the solid-liquid separator 27 is connected to the above-described heater 12 to form a heat medium circulation line 25. On the other hand, on the solid outlet side, a magnetic separator 27, an electrostatic separator 28, and an eddy current separator 29 are connected in this order.

The right central opening edge of the drum 1 in FIG. 1 is formed with a flange whose diameter is increased in a trumpet shape, and serves as an outlet 21 for the heat medium and the plastic. The heat medium and plastic exiting from the outlet 21 are received by an organic matter recovery gutter 22. The central opening on the right side of the drum 1 in FIG. 1 is occupied by an inorganic substance collecting gutter 16 and an organic substance collecting gutter 22, which is sealed and hermetically closed.

The heat medium and the plastic discharged from the organic matter recovery gutter 22 are transported by a hermetic organic matter transport conveyor 23. An exhaust gas line 19 is also connected to the casing of the organic substance transfer conveyor 23. The exhaust gas line 19 joins the exhaust gas line 19 of the inorganic substance transfer conveyor 17 and is connected to the scrubber 20.

The discharge end of the organic substance transfer conveyor 23 is connected to a solid-liquid separation device 24, and the liquid outlet side thereof is connected to a heat medium circulation line 25.

The shredder dust is pulverized by the pulverizer 8, enters the hopper 9, and is fed into the drum 1 by the feeder 10. The drum 1 is filled with a heating medium, and the pulverized material is mixed with the heating medium by the rotation of the drum 1. The inside of the drum 1 is maintained in a non-oxidizing gas atmosphere by nitrogen gas blown from a nitrogen gas blowing pipe 6.
The inorganic material and the plastic are separated by heat treatment in the drum 1, and the molten plastic floats. The plastic overflows from the outlet 21 while being molten, enters the organic matter recovery gutter 22, is conveyed by the organic matter transfer conveyor 23, and enters the solid-liquid separation device 24. In the meantime, the cooled and solidified plastic is separated therefrom and removed from the heating medium. On the other hand, the separated heat medium passes through the heat medium circulation line 25 and is supplied to the heater 1.
2, where it is heated and returned to the drum 1.
The shortage of the heat medium is appropriately replenished from the heat medium tank 11. Exhaust gas is cleaned by a scrubber 20 through an exhaust gas line 19 together with nitrogen gas, and is discharged out of the system. The inorganic substance settled at the bottom of the drum is the scooping tool 1 of the rotary lifter 13.
4, rises, falls near the top, and is received by the inorganic substance collecting gutter 16. The inorganic substance slides down the inorganic substance recovery gutter 16 and is conveyed by the inorganic substance transfer conveyor 17, and the heat medium attached to the inorganic substance is separated by the solid-liquid separation device 26. The separated heat medium is returned to the drum 1 through the heat medium circulation line 25. On the other hand, iron is recovered from the inorganic substance by the magnetic separator 27. Further, non-metals such as glass and sand and non-ferrous metals are recovered by the electrostatic separator 28 from the inorganic material from which iron has been removed. Further, aluminum is recovered from the recovered non-ferrous metal by the eddy current sorter 29, and is separated from other non-ferrous metals containing copper as a main component.

[0040]

As described above, according to the present invention,
Waste is continuously treated without pollution, and organic materials such as plastics and iron and non-ferrous metals can be collected as valuable resources.

[Brief description of the drawings]

FIG. 1 is a diagram showing an outline of a cross section of a drum-type separation / recovery apparatus according to an embodiment of the present invention and a connection relationship between attached facilities.

FIG. 2 is a vertical sectional view of the drum-type separation and recovery apparatus of FIG. 1 in a direction perpendicular to FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Drum 2 ... Liquid tank part 3 ... Heat insulation layer 4 ... Stand 5 ... Roller 6 ... Nitrogen gas blowing pipe 7 ... Blow outlet 8 ... Crusher 9 ... Hopper 10 ... Feeder 11 ... Heat Medium tank 12 ... Heater 13 ... Rotary lifter 14 ... Scooping tool 15 ... Inorganic matter 16 ... Inorganic matter recovery gutter 17 ... Inorganic matter transfer conveyor 18 ... Partition plate 19 ... Exhaust gas line 20 ... Scrubber 21 ... Outlet 22 ... Organic matter recovery gutter 23 ... Organic matter Transfer conveyor 24 ... Solid-liquid separator 25 ... Heat medium circulation line 26 ... Solid-liquid separator 27 ... Magnetic separator 28 ... Electrostatic separator 29 ... Eddy current separator

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshiro Hosoi 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Inventor Hidenori Yasuoka 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Sun F-term (reference) 4F201 AB16 AD03 BA05 BC02 BC12 BC15 BC25 BC37 BN08 BN17 BP09 BQ32 BQ44

Claims (2)

[Claims] A rotating drum containing a heat medium for immersing a composite waste containing a plastic and an inorganic material to separate the plastic and the inorganic material at a specific gravity; a mechanism for supplying the heat medium to one side of the drum; A rotary lifter that is installed in the drum and scoops and lifts the inorganic substances settling at the bottom of the drum, and an inorganic substance collection gutter that receives the inorganic substances that are released and fall near the top of the rotary lifter and discharge the inorganic substances outside the drum,
A member installed in the drum to prevent the floating plastic from moving to the traveling path of the rotary lifter, and receives the heat medium and the plastic flowing out of an outlet provided on the other side of the drum. An apparatus for separating and recovering plastic and inorganic matter from plastic / inorganic complex waste, comprising an organic matter recovery gutter 2. A separation and recovery device according to claim 1, a supply device for supplying a composite waste containing plastics and inorganic materials into a drum thereof, a solid-liquid separation device connected to the organic material recovery gutter, and the solid-liquid separation device. A mechanism for returning the heat medium separated by the liquid separator to the inside of the drum, a magnetic separator for separating iron from the inorganic substances discharged from the inorganic substance recovery gutter, and a static separator for separating non-ferrous metals from the inorganic substances from which the iron has been separated; An apparatus for separating and recovering plastics and inorganics from plastic / inorganic composite wastes, comprising an electric separator and an eddy current separator for separating aluminum from the non-ferrous metal.