JP2933442B2 - How to commercialize solid industrial waste - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for commercializing lumped or granular solid industrial waste such as incinerated ash, wood powder, metal powder and the like of plastic products.

[0002]

2. Description of the Related Art Recycling methods, incineration methods, landfill methods, and the like are currently being used for disposal of used plastic product wastes because they are non-degradable and do not return to soil.

[0003] Among them, the incineration method generates toxic gas which causes pollution, and it is difficult to secure a landfill site by the landfill method. Therefore, the recycling method is currently evolving in tandem with social demands.

[0004] As a recycling method, there are a case where the waste of plastic products is melted and molded as a recycled product, and a case where it is recovered as petroleum by dry distillation. In the carbonization method and the incineration method, residues as plastic ash are generated.

[0005] The disposal of wood powder and metal powder is less problematic than the disposal of plastic waste because it has the property of returning to the soil. It has been commercialized into plate materials, furniture, etc. by kneading with a chemical.

[0006]

Conventionally, plastic ash residues have been buried in landfills for disposal without value, so at that time the amount of plastic ash has been significantly reduced. Has been very annoying because of the difficulty and cost of transportation.

[0007] For commercialization of wood flour, pigments for coloring are required depending on the product in addition to the adhesive.
Since both are expensive, it was inevitable that the cost of the product would be high.

On the other hand, among the solid industrial wastes, there are toners as defective products or nonstandard products generated in manufacturing. In other words, toner has a large number of defective products, especially because subtle differences in color affect its commercial value, but it is discarded because it is not recyclable. Because of the consolidation, it was landfilled, requiring a great deal of labor and cost for disposal.

The present invention has been made in view of the above situation,
It is an object of the present invention to provide a method for re-producting solid industrial waste at a low cost because the cost required for the binder and coloring required for molding the powder and granules is low.

[0010]

To achieve the above object, various experiments have been conducted.
They have found that they have binder properties, and have completed the present invention.

That is, the first invention is to use a granular material of industrial waste as an aggregate, mix a toner containing a thermoplastic resin as a main component into the aggregate, and heat the thermoplastic resin while melting the thermoplastic resin. Then, a thermoplastic resin was formed into a desired shape as a connecting material, and a method of commercializing solid industrial waste using defective or nonstandard products generated in the production of the toner was constituted.

[0012] The second invention is a method for recovering petroleum from a plastic product, taking out the residue in a molten state, mixing a toner containing a thermoplastic resin as a main component, and heating to melt the thermoplastic resin. while doing,
A thermoplastic resin was formed into a desired shape as a connecting material, and a method of commercializing solid industrial waste using defective or nonstandard products generated in the production of the toner was used.

[0013]

[Function] The toner used in copying machines and the like contains a thermoplastic resin such as styrene-acrylic resin as a main component as an adhesive necessary for development. Since it has a content as a main component, when melted by being heated in molding,
Effectively acts as a binder. Further, since the toner contains a pigment corresponding to the development color, the color contributes to the expression of the color of the product.

The amount of toner added to the aggregate at the time of molding the recycled product depends on the type and condition of the aggregate.
About 1 to 20% is sufficient. For heating temperature, 100
~ 300 ° C is appropriate, and about 20-20
About 0kg / cm ² is enough.

In the case of the second invention, since the plastic ash residue is used while maintaining the molten state and contains plastic to such an extent that it is hardened as it is incompletely, the amount of toner added is small. I can do it.

[0016]

Next, several embodiments of the first invention will be described.

(Example 1) 1. Aggregate In a device that recovers oil by carbonizing the waste of plastic products, residues as plastic ash remain. This is a lump in the cooled state,
This is pulverized into a granular material.

2. About toner composition Polystyrene acrylic resin 95% Carbon (black pigment) 1% Others (iron powder, etc.) 4%

3. 8% of the toner is mixed with the above-mentioned powdery aggregate, and heated to 200 to 300 ° C. Then, a part of the aggregate (the remaining plastic) and the polystyrene acrylic resin are in a molten state, so they are poured into a tile mold while kneading, pressurized with a pressure of 100 kg / cm ² , cooled, and then removed from the mold. And take out the tile.

4. Even if the powdery material of the residue is heated and melted from the material, it is not completely melted, but remains unmelted, so that there is a tendency that grain patterns are scattered on the surface of the formed tile. It becomes a glossy surface. Therefore, it can be effectively used not only as a tile for general architecture but also as an art and craft tile.

(Embodiment 2) 1. Aggregate Wood flour discharged from a sawmill is dried and sieved, and then finely sorted.

2. About toner composition Styrene acrylic resin 80% Carbon content 5% Charge control agent 5% Fluidizing agent (SiO ₂ ) 1% Iron powder 3% Pigment 2% Others 4%

3. 20% of the toner is mixed with the wood powder, kneaded, packed into a flat mold, and pressed while applying 100 kg / cm ^2.
Heat to 0 ° C and mold as a plate.

4. The plate material thus formed can be effectively used as a wall material for a building, a wall material for furniture, and the like.

(Embodiment 3) 1. Aggregate The iron powder generated in the polishing work of cast iron products is sifted finely by sieving, and washed and dried.

2. About toner Styrene acrylic resin 45% Iron oxide (Fe ₃ O ₄ ) 40% Pigment 5% Other 5%

3. The toner is mixed with 15% of iron powder, put into a mold, and pressurized and heated to mold.

4. This molding is suitable as a material for avant-garde ornaments and avant-garde sculptures.

Next, an embodiment of the second invention will be described. 1) In a device for recovering petroleum by dry-distilling the waste of plastic products, the residue as plastic ash is taken out in a still molten state, put into a heating furnace, and 2% of toner is added thereto and kneaded. The composition of the toner is as follows.

2) Toner composition Polystyrene acrylic resin 70% Iron oxide (brown pigment) 20% Others 10%

3) In the molten state, the mixture is poured into a tile mold, pressurized with a pressure of 100 kg / cm ² , cooled, then the mold is removed and the tile is taken out.

4) Also in this case, an attractive tile product can be obtained as described above. Further, since the residue is molded in a molten state, the amount of heating during molding and the amount of toner added as a binder are small.

[0032]

As described above, according to the present invention, an industrial waste is used as an aggregate, and as a binder and a colorant, a defective toner or a nonstandard toner which is also a kind of industrial waste. Since the product is used, it has an excellent effect that it is suitable for rational disposal of waste and that products such as tiles and plates can be manufactured at low cost.

In particular, in the second aspect of the invention, since the toner is mixed with the plastic ash in the molten state and then molded, the process is rational and the amount of heating is small. The effect is that the product can be manufactured at low cost.

Claims (2)

(57) [Claims] 1. A method in which a granular material of industrial waste is used as an aggregate, a toner mainly composed of a thermoplastic resin is mixed into the aggregate, and the thermoplastic resin is melted by heating to connect the thermoplastic resin. A method for commercializing solid industrial waste, characterized in that it is formed into a desired shape as a material, and a defective product or a nonstandard product generated in the production thereof is used as the toner. 2. An apparatus for recovering petroleum from a plastic product, taking out the residue in a molten state, mixing a toner containing a thermoplastic resin as a main component into the molten state, and heating the molten resin while melting the thermoplastic resin. A method for producing a solid industrial waste, comprising: forming a plastic into a desired shape as a connecting material; and using a defective product or a nonstandard product generated in the production of the toner.