JP2003019712A - Method for treating metal-composite plastic waste - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for treating metal-composite plastic waste which can efficiently separate plastics from inorganic materials and minimize the consumption of a heating medium. SOLUTION: The method includes a separation/removal process for separating/removing an inorganic material component of fine particles the particle size of which is equal to or blow a prescribed value from the metal-composite plastic waste and a separation process for separating the treated plastic waste into a plastic component and the inorganic material component by the organic heating medium of at least 300 deg.C boiling point heated at 200-280 deg.C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal composite plastic waste, particularly, an abandoned automobile, an abandoned home electric appliance, an abandoned OA.
Metal composite plastic that can process waste of metal composite plastic mixed with various kinds of materials such as plastics, fibers, metals, glass, etc., such as shredder dust generated from equipment etc. quickly and easily It relates to a method of treating waste.

[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 the treatment thereof has become a major social and environmental problem. Above all, a plastic, which is a high-molecular hydrocarbon compound, has a high calorific value generated during combustion, and when incinerated, there is a problem that the furnace wall of the incinerator is damaged. Therefore, most of them are not disposed of by incineration but are disposed of at landfill sites or the like because they require an incinerator dedicated to plastics. However, the dumping of plastics, etc. brings about a decline in the ground at the landfill site and is not preferable in terms of environmental measures. Furthermore, recently, along with the increase in treatment cost, the shortage of land for landfill is becoming a social problem. For this reason, the development of a method capable of treating a large amount of synthetic resins without throwing them away and without causing problems in environmental measures has been earnestly desired and researched in various fields.

As a method for treating this waste plastic, 2
A method is known in which a low-boiling-point metal or alloy having a melting point of 00 ° C to 400 ° C is heated and melted, and waste plastic is immersed therein for a certain period of time to decompose it (Japanese Patent Laid-Open No. 50-9).
677). This method was developed as a method for dehydrochlorinating a polyvinyl chloride resin prior to incineration because harmful hydrogen chloride is generated when the polyvinyl chloride resin is treated in an incinerator.

Further, a method is known in which an adhesive resin such as polyethylene is removed from a metal material using an edible oil waste liquid as a solvent to extract the metal (Japanese Patent Laid-Open No. 5-14704).
No. 1). As a similar method, a molten salt having a temperature of 250 to 300 ° C. at which the plastic material is fluidized is used, the molten salt is controlled to the above temperature by heating, and the molten salt is heated to 2 ° C. to 5 ° C. higher than the above temperature. By separating the plastic waste by putting the plastic waste inside, the fluidized plastic material is floated above the liquid surface of the molten salt, and the metal material or glass material is allowed to settle below the liquid surface, There is also known a method of separating and recovering plastic waste from a metal material and a glass material by using a molten salt (Japanese Patent Laid-Open No. 8-108165).

Further, the waste plastic is mixed with waste engine oil, waste lubricating oil, waste cleaning oil, waste solvent, etc.
Heat at a temperature in the range of 00 to 200 ° C for 30 to 120 minutes,
After extracting polyethylene, polypropylene and polystyrene contained in waste plastics, solid-liquid separation is performed to separate solids, and a method of treating waste plastics using a mixture of polyethylene, polypropylene and polystyrene and an extraction solvent as fuel is also known. (Japanese Patent Laid-Open No. 9-2
No. 682977).

Further, technical development concerning shredder dust treatment has been earnestly studied, and incineration and gasification treatment including incineration and melting furnaces including power generation are being developed, including volume reduction. JP-A-2000-43044 and JP-A-11-
Japanese Patent No. 323360 discloses a method of treating shredder dust, which is a plastic / inorganic composite material, which the present inventors have earnestly studied. Japanese Patent Laid-Open No. 11-32
Japanese Patent No. 3360 discloses a method of recovering an inorganic material and a polymer from an inorganic material-containing waste polymer made of another type of material. As a means for separation, an organic heat medium having a boiling point of 300 ° C. or higher and an aromatic index of 0.2 or higher is added at 200 ° C.
Heating at 400 ° C. or below the boiling point and immersing the inorganic material-containing polymer in the polymer to separate the polymer component and other components.

[0007]

These conventional processing methods have the following problems. For example, JP-A-50-967
When a molten metal is used as a molten liquid as disclosed in JP-A No. 7-74, a component that is harmful in the refining process of the metal is entrained in the metal, which requires treatment of the harmful component, which is not preferable.
Further, when a molten salt is used, there is a possibility that alkali that is a component of the molten salt will be entrained in the recovered metal and cause deterioration of the furnace wall of the melting furnace, but no countermeasure is taken into consideration.

Further, in order to recover metals and plastics economically, it is essential to efficiently separate and regenerate the molten liquid, but the above prior art does not consider this measure. In particular, when a molten metal is used, in the reaction between hydrogen chloride generated by the decomposition of polyvinyl chloride and the molten metal, the molten metal becomes a chloride, so that its regeneration is extremely inefficient. Also, in the case of molten salt, the density of the plastic used as a composite material in the process of treatment increases, so the plastic may remain in the molten salt and the plastic may not be floated and separated.
Further, even if the plastic is floated and separated, a crushing process is necessary for its utilization. Therefore, when used as fuel, this method cannot be applied to wastes containing many kinds of resins and composite materials.

Particularly, since the molten salt has a high density and is close to the density of inorganic substances such as glass, it is difficult to sediment and separate the sand and glass contained in the shredder dust, and these inorganic substances are mixed with the floating polymer. There's a problem. Further, it is considered that the metal eluted from the inorganic material-containing waste polymer may change the physical properties such as the viscosity of the molten salt, and it is extremely difficult to remove and regenerate them. Furthermore, since polypropylene and polyethylene have excellent thermal stability, a processing temperature of 400 ° C or higher is required,
In the case of nitrate molten salt, NOx is generated, so there is a problem in promoting the work.

In the method described in JP-A-9-268297, a specific polymer (polyethylene, polypropylene, polystyrene) is dissolved in a soluble hydrocarbon oil at a low temperature at which decomposition does not occur, so that the oil is saturatedly dissolved. As the amount approaches, the viscosity becomes higher and solid-liquid separation becomes more and more difficult, and there is a problem in its transfer and combustion method as fuel oil. In addition, when processing plastics mixed with materials containing chlorine compounds such as vinyl chloride,
Since the treatment is performed at a relatively low temperature of 0 to 200 ° C., chlorine may remain in the liquid component after the treatment, which causes a problem in the subsequent treatment steps. Generally, this treatment requires a treatment temperature of 250 ° C. or higher, so pressurizing operation is indispensable in this method, and it is possible to treat waste plastic, but wastes that also contain many kinds of metals such as shredder dust. Not suitable for processing. In addition, Japanese Unexamined Patent Application Publication No.
No. 00-043044, JP-A-11-323360.
The issue gazette also has room for improvement.

Originally, shredder dust is the residue obtained by removing useful components from waste automobiles and waste home electric appliances and then further crushing them with a crushing device to remove ferrous non-ferrous metals. Therefore, in this crushing process, a fine particle component of several mm or less is generated, which is also a constituent component of the shredder dust.

The problem of such consumption of the separation medium applies to all the prior arts. DISCLOSURE OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and can efficiently separate the plastic and the inorganic material and minimize the consumption of the heat medium to be used. The object is to provide a method for treating a material.

[0013]

Means for Solving the Problems The inventors have conducted extensive studies to solve the above-mentioned conventional problems. As a result, when separating metal composite plastic waste (shredder dust) from the plastic and inorganic components in the heating medium, the separation performance is the viscosity and density of the heating medium and the flow of the heating medium in the separator. It was found that it depends on the density and particle size of each component in shredder dust.

The present invention has been made on the basis of the above-mentioned research results, and the first embodiment of the method for treating a metal composite plastic waste of the present invention is a metal composite plastic waste having a predetermined particle size or less. The separation / removal step of separating and removing the fine-grained inorganic material components and the metal composite plastic waste from which the fine-grained inorganic material components are separated and removed
A method for treating a metal-composite plastic waste, comprising a separation step of separating a plastic component and an inorganic material component by an organic heat medium having a boiling point of 300 ° C or higher heated from ℃ to 280 ° C.

A second aspect of the method for treating a metal composite plastic waste of the present invention further comprises a drying treatment step of drying the metal composite plastic waste prior to the separating and removing step. It is a method of processing a product.

A third aspect of the method for treating a metal-composite plastic waste according to the present invention is to crush the plastic component crushed by crushing the plastic component separated and recovered in the separation step for separating the plastic component and the inorganic material component. A method for treating a metal composite plastic waste, further comprising a treatment step and an inorganic material component crushing treatment step of crushing the separated and recovered inorganic material component.

A fourth aspect of the method for treating a metal composite plastic waste of the present invention is a step of separating the inorganic material component crushed in the inorganic material component crushing treatment step into a metal, a non-ferrous metal and a glass component, And a step of utilizing the plastic component crushed in the plastic component crushing process as a raw fuel for a furnace.

In a fifth aspect of the method for treating a metal composite plastic waste of the present invention, the metal composite plastic waste is at least two of a metal material, a non-ferrous inorganic material, a plastic material, and a synthetic / natural rubber. It is a method of treating metal composite plastic waste, which consists of two mixtures.

A sixth aspect of the method for treating a metal-composite plastic waste of the present invention is to treat a metal-composite plastic waste with an organic medium heated to 200 to 280 ° C. and having a boiling point of 300 ° C. or higher. A method of treating a metal composite plastic waste, wherein the step of separating and removing fine inorganic material components from the metal composite plastic waste, and a heating medium in which the waste from which the fine inorganic material components have been removed is heated. A step of separating the plastic component and the inorganic material component in the filled reactor, a step of crushing the separated and recovered plastic component, a step of crushing the separated and recovered inorganic material component, and the crushing treatment The process of separating the separated inorganic material components into metal, non-ferrous metal and glass components, and the crushed plastic components as raw fuel for the furnace. Characterized in that comprising the step of a method of processing metal composite plastic waste.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail with reference to the drawings. The method for treating a metal-composite plastic waste according to the present invention separates a metal-composite plastic waste from a plastic component and an inorganic material component by an organic medium heated to 200 to 280 ° C. and having a boiling point of 300 ° C. or higher. The method for treating a metal-composite plastic waste is provided with a separation step. Further, in the method for treating a metal composite plastic waste of the present invention, a plastic component crushing treatment step of crushing the plastic component separated and recovered in the separation step of separating a plastic component and an inorganic material component, An inorganic material component crushing treatment step of crushing the recovered inorganic material component may be further provided.

Further, in the method for treating a metal composite plastic waste of the present invention, a step of separating the inorganic material component crushed in the inorganic material component crushing treatment step into a metal, a non-ferrous metal and a glass component, and the plastic component The method may further include a step of using the plastic component crushed in the crushing process step as a raw fuel for the furnace. Further, in the method for treating a metal composite plastic waste of the present invention, before the separation step for separating a plastic component and an inorganic material component, a separation and removal step for separating and removing fine inorganic components from the metal composite plastic waste is further performed. You may have it.

Furthermore, the method for treating a metal composite plastic waste according to the present invention may further include a drying treatment step for drying the metal composite plastic waste prior to the separating and removing step.

FIG. 1 is a flow chart for explaining one embodiment of the method for treating a metal composite plastic waste according to the present invention. As shown in FIG. 1, the shredder dust is supplied to the separation device 1 and fine particle components such as earth and sand in the shredder dust are removed. The shredder dust from which soil and the like has been removed is filled with a heated heating medium.
And is separated into plastic components and inorganic components such as metals and non-ferrous metals. The plastic / rubber component recovered in the separating device 2 is crushed by the crushing device 3 and supplied to the blowing means into the furnace. Prior to the removal of fine particles such as sediment in the shredder dust described above,
If necessary, dry the shredder dust. Metals to which heat medium has been separated, which have been separated in the separation device 2.
Inorganic components such as non-ferrous metals are crushed by the crushing device 4,
The heat medium is separated from the inorganic component such as the metal component. catalyst,
The metal, non-ferrous metal, and glass components are separated and recovered in the separating device 5 and then reused.

Furthermore, in the method for treating a metal composite plastic waste according to the present invention, the metal composite plastic waste is formed from a mixture of at least two of a metal material, a non-ferrous inorganic material, a plastic material and a synthetic / natural rubber. Has become. That is, the metal composite plastic waste is a metal such as iron, copper, aluminum, zinc, lead, nickel and chromium, a metal material such as an alloy containing any of these as a main component, carbon black, talc, calcium carbonate,
It is a mixture of non-ferrous inorganic materials such as silica and glass fibers, non-ferrous inorganic materials such as glass and plastics such as polyethylene, polypropylene, polystyrene and polyvinyl chloride, as well as synthetic rubbers such as butadiene and isoprene rubbers and natural rubbers. It may be a composite material in which the respective materials are combined, or a mixed material in which the respective materials are mixed. For example, it corresponds to abandoned automobiles, abandoned home appliances, abandoned OA equipment and shredder dust. Shredder dust is a piece of waste that is obtained after crushing scrapped cars and household appliances with shredders, guillotines, shears, etc. to recover metal.

On the other hand, the heat medium used as the organic medium is
It exists as a liquid at the immersion temperature of the composite waste, and also serves as a fuel when the separated metal is melted and reused. In addition, at this immersion temperature, it is necessary that at least the physical properties such as the viscosity are not changed without being decomposed at all and the separation from the separated metal or other inorganic material is easy. Further, it is desirable that the separated polymer floats and separates from the organic medium. The heat medium satisfying these conditions has a boiling point of 250 ° C. or higher and an aromatic index of 0.2 or higher. The boiling point is preferably 300 ° C or higher, particularly preferably 350 ° C or higher.

On the other hand, the upper limit of the boiling point is determined by its thermal stability and is preferably 600 ° C. or lower, particularly 550 ° C. or lower. The aromatic index is a ratio of the number of aromatic carbons to the total number of carbons, and the Brown-Ladner method (JKBrown.WRLan
der and N. Sheppard. Fuel 39.79 (1960). The aromatic index is preferably 0.2 or more, particularly preferably 0.25 or more, and the upper limit is 1.0 or less, particularly preferably 0.95 or less. Specific examples include heavy oil of coal tar, pitch, coal liquefied oil, petroleum-based vacuum residual oil from specific oil species (those with many aromatic components such as kafji), ethylene bottom oil, reforming Oil, FCC
Examples include oil. In particular, from the viewpoint of treating exhaust gas in a melting furnace, coal tar heavy oil having a low sulfur content is preferably used.

In the separating device 2, the plastic component and the inorganic component are separated in the heating heat medium. The separating performance is the viscosity and density of the heating heat medium and the flow of the heating medium in the separating device, and the components in the shredder dust. Depends on density and particle size. Therefore, the device for separating earth and sand from shredder dust 1
In the above, the particle size of the fine particle component to be removed is determined in consideration of them. It is preferable to remove soil and gas of 4 mm or less and gas components, and it is more preferable to remove components of 2 mm or less. The separating device 1 may be an ordinary sieving or wind screening, and a dry separating device is preferable.

The crushing devices 3 and 4 are preferably ball mills or the like that generate heat by crushing because the heat medium adheres to the plastic components and inorganic components such as metals and non-ferrous metals separated by the separating device 2. However, a crushing device with cooling such as a hammer mill or a jet mill is preferable. The heat medium, the metal, the non-ferrous metal, and the glass component are composed of a magnetic separator (a magnetic drum, a magnetic belt type magnetic separator, etc.) for the separator 5, an electrostatic separator and an eddy current separator for separating aluminum from the non-ferrous metal. .

FIG. 2 is a view showing a separating device 2 for separating a plastic component and an inorganic component used in the present invention. Figure 2
As shown in (1), the shredder dust from which fine particle components such as earth and sand were removed in advance was put into the charging tank 6 and supplied to the melting and separating tank 7. The dissolution / separation tank is composed of a rotary weir 11 for controlling the residence time of shredder dust, a float scraper 8 for recovering plastic components from a heat medium, and a sediment scraper 9 for separating inorganic components from the heat medium. The plastic component is recovered by the floating material primary recovery device 18, supplied to a cooling device (not shown), and then crushed by a crushing device (not shown). The inorganic components are cooled and recovered in a recovery box 19 and processed by a crushing device (not shown) and a ferrous / non-ferrous separating device. The gas generated from the dissolution / separation tank 7 is detoxified in the exhaust gas treatment facility 14 by burning the light hydrocarbons in the combustion furnace 13 after the tar component in the generated gas is removed by the removal device 12.

Conventionally, when a polymer component and other components are separated by a heat medium, the heat medium used for separating the polymer component and the inorganic material component adheres to the inorganic material component,
The consumption of the heat medium increases, and therefore, the heat medium that has been consumed in a large amount must be newly added, which causes a problem in economic efficiency. In particular, the amount of heat medium adhered to the fine particles of sand and glass scraps contained in the inorganic material component is large, and if the proportion thereof in the test material to be treated is high, the amount of heat medium consumed further increases. Further, from inorganic material components, non-ferrous components such as iron, copper and aluminum can be separated by magnetic separation and the like and can be reused, but a large amount of cost is required to remove the heat medium from fine grain components such as sand, Moreover, there is a problem that its use is limited. According to the method for treating a metal-composite plastic waste of the present invention, fine particles of an inorganic material component having a predetermined particle diameter or less are removed, so that the above-mentioned problems can be solved.

[0031]

Example 1 From shredder dust of an abandoned vehicle, which has the composition shown in Table 1 and is composed of moisture, non-combustible materials composed of glass / metals, and combustible materials such as papers / cloths / vinyl / plastics
Fine particle components of 0 mm or less were separated in advance with a sieve, and a shredder dust treatment test was performed. That is, shredder dust of an abandoned car is loaded for 10 hours at a loading rate of 100 kg / hr.
In the meantime, the charging process was performed in the heating medium heated to 280 ° C. The residence time of the test material in the dissolution and separation tank was 18 min by adjusting the rotation speed of the rotary weir. As a result, the recovery rate was 103.5 kg / hr, and the heat medium adhesion rate was 1 for the floating material.
7.8%, sediment 8.5%, heat medium consumption 141.
2kg-heat medium / t-SD (Unit: shredder dust 1
The heat medium consumption per ton treatment) (124.8 for floats and 16.4 for sediments (kg-heat medium / t-SD)).

Example 2

Fine particles of 5 mm or less from the shredder dust of an abandoned automobile, which has the composition shown in Table 1 and is composed of water, non-combustible materials made of glass and metals, and combustible materials such as paper, cloth, vinyl and plastics. Was separated in advance with a sieve, and a shredder dust treatment test was performed. That is,
The shredder dust of an abandoned automobile was put into a heating medium heated to 280 ° C. for 10 hours at a loading rate of 100 kg / hr. The residence time of the test material in the dissolution and separation tank was 18 min by adjusting the rotation speed of the rotary weir. As a result, the recovery rate was 105.3 kg / hr, the heat medium adhesion rate was 18.8% for the floating material, 19.4% for the sediment, and the heat medium consumption was 167.6 kg-heat medium / t-. SD (Float 1
26.7, sediment 40.9 (kg-heat medium / t-S
D)).

Example 3 2 from the shredder dust of an abandoned vehicle having the composition shown in Table 1 and composed of incombustible substances composed of water, glass and metals, and combustible substances such as papers, cloths, vinyl and plastics
Fine particles of mm or less were separated in advance with a sieve, and a shredder dust treatment test was performed. That is, shredder dust of an abandoned automobile was put into a heating medium heated to 280 ° C. for 10 hours at a loading rate of 100 kg / hr. The residence time of the test material in the dissolution and separation tank was 18 min by adjusting the rotation speed of the rotary weir. As a result, the recovery rate was 108.5 kg / hr, and the heat medium deposition rate was 2 for the floating material.
0.9%, sediment 23.7%, heat medium consumption 19
The amount was 2.7 kg-heat medium / t-SD (139.6 for float and 53.1 for sediment (kg-heat medium / t-SD)).

Comparative Example A shredder dust of an abandoned automobile having a composition shown in Table 1 and composed of incombustible substances such as water, glass and metals and combustible substances such as papers, cloths, vinyls and plastics is used as a fine particle component. The treatment test was carried out without separating. That is, shredder dust of an abandoned automobile was put into a heating medium heated to 280 ° C. for 10 hours at a loading rate of 100 kg / hr. The residence time of the test material in the dissolution and separation tank was 18 min by adjusting the rotation speed of the rotary weir. As a result, the recovery rate was 113.1 kg / hr, the heat medium adherence rate was 26.3% for the floating material, 36.9% for the sediment material, and the heat medium consumption amount was 254.6 kg-heat medium / t-. SD (Float 1
70.4, sediment 84.1 (kg-heat medium / t-S
D)).

As is clear from the above description, in the comparative example in which the shredder dust of a waste automobile is treated without separating fine particle components, the heat medium adhesion rate is high and the heat medium consumption amount is remarkably large. On the other hand, 10m each
In the method of the present invention in which the fine particle components of m or less, 5 mm or less, and 2 mm or less are separated in advance with a sieve to treat shredder dust, the heat medium adhesion rate is low and the heat medium consumption amount is small. In particular, when the shredder dust is treated by previously separating fine particle components of 10 mm or less with a sieve, the heat medium consumption amount is extremely small.

As described above, according to the present invention, there is provided a metal composite plastic waste treatment method capable of efficiently separating a plastic and an inorganic material and reducing the consumption of a heat medium used. It is also possible from the economical point of view.

[Brief description of drawings]

FIG. 1 is a flow chart illustrating one embodiment of a method for treating a metal composite plastic waste of the present invention.

FIG. 2 is a diagram showing a separating device for separating a plastic component and an inorganic component used in the present invention.

FIG. 3 is a table 1 showing the composition of the components used in the treatment test, in which the shredder dust constituent components and earth and sand have been removed in advance.

FIG. 4 is a table 2 showing the results of shredder dust processing tests.

[Explanation of symbols]

1. Sediment separation device 2. Separation device 3. Crusher 4. Crusher 5. Separation device 6. Input port 7. Dissolution separation tank 8. Float scraper 9. Sediment scraper 10. Heat medium tank 11. Revolving weir 12. Removal device 13. Combustion furnace 14. Exhaust gas treatment facility 18. Floating object primary recovery machine 19. Collection box

Front page continuation (51) Int.Cl. ⁷ identification code FI theme code (reference) B09B 5/00 C 3/00 303F 5/00 Q (72) Inventor Hiroyuki Hiroba 1-1-1 Marunouchi, Chiyoda-ku, Tokyo No. 2 Japan Steel Pipe Co., Ltd. (72) Inventor Tatsuro Ariyama 1-2 1-2 Marunouchi, Chiyoda-ku, Tokyo No. 2 Japan Steel Pipe Co., Ltd. (72) Ichiro Ueno 1-2-1 Marunouchi, Chiyoda-ku, Tokyo F-Term in Japan Steel Tube Co., Ltd.

Claims (6)

[Claims] 1. A separation / removal step of separating and removing fine-grained inorganic material components having a predetermined particle size or less from the metal-composite plastic waste, and a metal-composite plastic waste from which the fine-grained inorganic material components have been separated and removed at 200 ° C. To a 280 ° C. to an organic heat medium having a boiling point of 300 ° C. or higher, and a separation step of separating the plastic component and the inorganic material component from each other. 2. The method for treating a metal composite plastic waste according to claim 1, further comprising a drying treatment step of drying the metal composite plastic waste prior to the separation and removal step. 3. A plastic component crushing step of crushing the plastic component separated and recovered in the separating step of separating a plastic component and an inorganic material component, and a crushing treatment of the separated and recovered inorganic material component. The method for treating a metal composite plastic waste according to claim 1 or 2, further comprising: a crushing treatment step for crushing the inorganic material component. 4. A step of separating an inorganic material component crushed in the inorganic material component crushing treatment step into a metal, a non-ferrous metal, and a glass component, and a plastic component crushed in the plastic component crushing treatment step in a furnace. The method for treating a metal-composite plastic waste according to any one of claims 1 to 3, further comprising a step of using it as a raw fuel. 5. The metal composite plastic waste comprises a metal material, a non-ferrous inorganic material, a plastic material, and a synthetic / plastic material.
The method for treating a metal-composite plastic waste according to any one of claims 1 to 4, which comprises a mixture of at least two of natural rubber. 6. The metal composite plastic waste is collected from 200 to
A method for treating a metal composite plastic waste in which a plastic component and an inorganic material component are separated in an organic medium heated to 280 ° C and having a boiling point of 300 ° C or higher, wherein fine inorganic material components are separated and removed from the metal composite plastic waste. The step, the step of separating the plastic component and the inorganic material component in the reactor filled with the heated heat medium from the waste from which the fine-grained inorganic material component has been removed, and the crushing treatment of the separated and recovered plastic component A step of crushing the separated and recovered inorganic material component, a step of separating the crushed inorganic material component into a metal, a non-ferrous metal, and a glass component, and a crushed plastic component as a raw fuel for the furnace A method for treating a metal-composite plastic waste, which comprises a step of utilizing the metal-composite plastic waste.