JPH06218352A - Solidification of industrial waste - Google Patents

Abstract

(57) [Summary] [Purpose] When manufacturing building materials, paving materials, etc. using resin-based wastes and other industrial wastes, the aforementioned wastes that can satisfy the required compressive strength. A method for solidifying an object is provided. [Structure] As an example of reusing the resin-based waste, an alumina-based solidifying agent is mixed with incineration ash of the resin-based waste, and water is added and kneaded. The mixing ratio of the resin waste, the solidifying agent and the water is 5 to 10: 2 to 5: 1 to 4 respectively. After kneading, it is put into a mold, press-molded, taken out from the mold and cured. The uniaxial compressive strength of the product obtained by such a process is as shown by the solid line in FIG.
When it is set to 00 kg / cm ² , the strength required for the pavement plate shown by the chain line is satisfied. Fine aggregate may be added to the above composition. Alternatively, an artificial stone composed of stone powder and a resin may be used as the surface layer, and a lower layer may be obtained by mixing industrial waste fine powder with an alumina-based solidifying agent and kneading the mixture with water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention utilizes resin-based waste such as plastic and hard urethane rubber, concrete waste, or industrial waste such as hedoro and bentonite to make interior and exterior wall materials and floor materials for buildings. The present invention relates to a method for solidifying the industrial waste when manufacturing a pillar material, a flat plate for road paving, an interlocking block, or the like.

[0002]

2. Description of the Related Art A large amount of resins are used for home electric appliances, household articles, etc., but the amount of resin-based waste generated by discarding these has become enormous in recent years. As one of the means for reusing such resin-based waste, a ash obtained by incinerating the resin-based waste is mixed with a Portland cement-based solidifying agent, and water is added to this to knead the mixture. Attempts have been made to solidify into a desired shape by molding. The solidification referred to here is a level at which a strength of a certain value or more required for practical use is realized, and not a level at which it is simply solidified.

Further, regarding the solidification method as a single product, such as a method for solidifying a powder of natural stone to produce a natural stone-like pseudo stone, and a method for solidifying concrete fine powder remaining after extracting crushed stone and sand from waste concrete, Proposals have been made in the past. It is known that the interlocking block has a laminated structure in which a tile is used as a surface layer and concrete is used as a lower layer. In this case, the tile and the concrete are individually prepared, and then the two are bonded with an adhesive to obtain a product. Examples of using industrial waste include:
As a sidewalk pavement material, the surface layer is a hardened colored cement with natural fine stones or artificial crushed stone as aggregate, and the lower layer is a hardened cement with aggregated granulated slag obtained by melting industrial waste. Some are joined by press molding. However, there has been no proposal for a method for producing a pseudolite obtained by stacking and solidifying natural stone powder and industrial waste powder.

[0004]

Regarding the reuse of the various industrial wastes described above, the conventional techniques have the following problems. (1) When a solidifying agent such as Portland cement is added to the resin-based waste, it can be solidified but cannot be solidified until the strength required for a building material or paving material is obtained. It is considered that the cause is that the resin-based waste and the solidifying agent have a relatively large specific surface area and require a large amount of water, and thus are hard to solidify to a predetermined strength. (2) A laminated structure product using industrial waste as a paving material cannot be continuously manufactured. That is, the surface layer and the lower layer must be manufactured separately. And it cannot be laminated unless an adhesive is used between the surface layer and the lower layer. (3) When the surface layer and the lower layer are laminated with an adhesive, the artificial stone in the surface layer may be broken by pressing. It is considered that the cause is that the surface layer is completely solidified, so that if the surface layer or the press die has irregularities, the pressure is unevenly applied and cracks. The present invention focuses on the above conventional problems, and when manufacturing building materials, paving materials, etc. using industrial waste, it is possible to easily obtain the compressive strength required for these, and to continuously and easily It is intended to provide a method for solidifying industrial waste that can be produced.

[0005]

In order to achieve the above object, the first method for solidifying industrial waste according to the present invention is to add an alumina solidifying agent and water to a powdery resin waste. ,
Alternatively, fine aggregate, an alumina-based solidifying agent, and water are added, and the mixture is kneaded, molded, and press-molded.

The second method of solidifying industrial waste according to the present invention is to knead stone powder obtained by crushing natural stone and molten resin, pour into a mold, and defoam while applying vibration to form a surface layer material, Powdered industrial waste mixed with alumina-based solidifying agent and water, or powdered industrial waste mixed with fine aggregate, alumina-based solidifying agent and water Is a lower layer material, and the lower layer material is poured onto the surface layer material before the surface layer material is solidified, and a pseudo-stone having a laminated structure of artificial stone and industrial waste is obtained by solidifying these while applying vibration. In such a configuration, a stone powder obtained by crushing natural stone as a surface layer material and a molten resin are kneaded and poured into a mold, and defoamed while applying vibration to a semi-solidified product together with the mold into a press mold. Put, powder form as lower layer material The above-mentioned mold is a product obtained by kneading industrial waste with an alumina-based solidifying agent and water, or a product obtained by kneading powdery industrial waste with a fine aggregate, an alumina-based solidifying agent, and water. It is also possible to use a solidification method in which a pseudo-stone having a laminated structure of artificial stone and industrial waste is obtained by pouring the mixture into the above and bonding the surface layer material and the lower layer material by press molding.

The surface layer material in the second solidifying method is such that the mixture ratio of stone powder obtained by crushing natural stone and resin is 65 to 95% by weight: 5 to 35% by weight, and the lower layer material is powdery industrial waste. 50 to 75% by weight of the solidifying agent and the solidifying agent and water: 1
5 to 35% by weight: 10 to 30% by weight, or the mixing ratio of powdered industrial waste, fine aggregate, solidifying agent and water is 25 to 6
0% by weight: 10 to 45% by weight: 10 to 30% by weight: 10
It is characterized in that the content is ˜35% by weight. Further, a plate-like or lattice-like reinforcing material may be embedded in the lower layer material of the pseudo stone having such a laminated structure.

[0008]

According to the first method of solidifying industrial waste of the present invention having the above-mentioned constitution, since the alumina solidifying agent is mixed with the resin waste, the hydration reaction rate can be increased until the self-sustaining process is achieved. Since the time is short, the product strength can be increased as compared with the case where the Portland cement-based solidifying agent is used. Also,
When a Portland cement-based solidifying agent is used, the product adheres to the mold, so the releasability is not good, but when an alumina-based solidifying agent is used, demolding is fast and the mold releasability is good. Furthermore, by adding fine aggregate to the resin waste and the alumina solidifying agent, the proportion of fine particles in the whole is reduced,
Since the specific surface area is small, the amount of water can be reduced. Therefore, the ratio of water / solidifying agent becomes small, and it becomes easy to solidify. At the same time, the particle size distribution is broadened and the incorporation of particles is improved, so that the strength of the product can be increased.

In the second solidifying method of the present invention, stone powder obtained by crushing natural stone as a surface layer material is mixed with a resin, kneaded, and then poured into a mold, which is then powdered for industrial waste. A mixture of an alumina solidifying agent and water and kneading, or a mixture of these and kneading with fine aggregate is poured as a lower layer material, so that the respective particles are incorporated at the boundary between the surface layer and the lower layer. Therefore, both can be integrated, that is, laminated. In this case, the lower layer solidifying agent has good adhesiveness with the resin, and thus is easily laminated. Also,
If the surface layer material is press-molded together with the lower layer material when it is semi-solidified, cracking does not occur in the surface layer and the layers can be easily laminated.

[0010]

EXAMPLES Examples of a method for solidifying resin waste according to the present invention will be described below with reference to the drawings. Claim 1
In the first example, ash obtained by incinerating a phenolic resin was used as the powdery resin-based waste, and the trade name Thomas Ceramics was mixed as the alumina-based solidifying agent, and water was added and kneaded. The resin waste, the solidifying agent, and the water are mixed in a weight ratio of 5 to 10: 2 to 5: 1 to 4 respectively.
And After kneading, the mixture was put into a mold, press-molded, taken out from the mold and cured. The uniaxial compressive strength of the product obtained by such a process is 243 in 3 days when the pressing surface pressure is 200 kg / cm ² , as shown by the solid line in FIG.
kg / cm ² , age 7 days 313 kg / cm ² , age 2
It became 376 kg / cm ² on the 8th, and the uniaxial compressive strength standard 3 of the Interlocking Block Association shown by the chain line in the figure 3
Satisfies 30 kg / cm ² or more. In addition, when the pressing surface pressure is 300 kg / cm ² , the strength of the material for 3 days is 2
It is 91 kg / cm ² .

In the second embodiment of claim 1, ash obtained by incinerating a phenol resin is used as a powdery resin-based waste, and sand having a particle size of 5 mm or less (of which, a grain is used as fine aggregate) is used. 2 to 3% having a diameter of 74 μm or less) was mixed with a trade name of Thomas ceramics as an alumina-based solidifying agent, and water was added and kneaded. The resin waste, fine aggregate, solidifying agent, and water are mixed in a weight ratio of 5 to 10: 2, respectively.
It was set to 5: 2 to 6: 1 to 5. After kneading, the mixture was put into a mold, molded under a pressing surface pressure of 200 kg / cm ² , taken out of the mold and cured. The uniaxial compressive strength of the product obtained by such a process is 238 k in 3 days as shown by the dotted line in FIG.
g / cm ² , age 279 kg / cm ² , age 28
The daily weight is 335 kg / cm ² , which satisfies the above strength standard.

In the third embodiment of the first aspect, the fine aggregate and the alumina solidifying agent are mixed with the powdery resin waste as in the first embodiment, and water is added and kneaded. These compounding ratios are 3 to 8: 4 to 10: 2 to 6: by weight, respectively.
It was set to 1-5. After kneading, the mixture was put into a mold, press-molded, taken out from the mold and cured. A comparison of the difference in uniaxial compressive strength with respect to the pressing surface pressure in this case is shown in FIG.
As indicated by the dotted line in Fig. 1, the pressing surface pressure is 100 kg / cm ²
Uniaxial compressive strength is 301kg / c after 3 days
to m ^2, wood age 3 days intensity when pressing surface pressure 200 kg / cm ² was increased to 350 kg / cm ^2. Material age 28 days strength of these products, as shown by the solid line in the figure, became ^{403kg / cm 2, 469kg / cm} 2 , respectively.

In the embodiments of claims 2 and 4, 77% by weight of stone powder having a particle diameter of about 1 mm obtained by crushing natural stone as a surface layer material and 23% by weight of a melted room temperature curing type epoxy resin are used. Compounded. This is installed on the table vibrator 1 as shown in FIG.
Was poured into the mold 2 and sufficiently defoamed while applying vibration, and the lower layer material was poured onto the surface layer material 3 while the surface layer material 3 did not solidify, and was solidified while applying vibration. The lower layer material is a mixture of 62% by weight of concrete powder of construction waste with 18% by weight of trade name Thomas Ceramics as an alumina-based solidifying agent, and 20% by weight of water. The lower layer material has a particle size of 5 mm or less and a particle size of 74 μm as fine aggregate.
Sand may be added in an amount of 3%, and 97% of more than 74 μm and 5 mm or less. When the surface layer and the lower layer were solidified by such a method, as shown in FIG. 4, the surface layer material 3 and the lower layer material 4 were formed.
It was possible to manufacture a laminated flat plate in which and were completely adhered, and the uniaxial compressive strength on the 28th day satisfied the standard value of 330 kg / cm ² .

In the embodiments of claims 3 and 4, 77% by weight of stone powder having a particle size of about 1 mm obtained by crushing natural stone as a surface layer material and 23% by weight of a melted room temperature curing type epoxy resin are used. Compounded. This was kneaded, poured into a mold installed in a table vibrator, and sufficiently defoamed while applying vibration. Next, as shown in FIG. 5A, the semi-solidified surface layer material 3 is transferred together with the mold 5 to a press die 6, and a paste-like adhesive 7 is applied to the surface layer material 3 as shown in FIG. 5B. . Then, as shown in (c), the lower layer material 4
As a concrete aggregate, 62% by weight of concrete fine powder of construction waste was mixed with 18% by weight of trade name Thomas ceramics as an alumina-based solidifying agent, and 20% by weight of water was added and kneaded. A mixture having a particle size of 5 mm or less and a particle size of 74 μm or less 3% and a particle size of 74 μm or more and 5 mm or less and 5 mm or less added with 97% of sand was kneaded and charged into the upper surface of the mold 6 and press-molded. FIG. 5C shows a state in which the surface layer material and the lower layer material are compressed by the press.
This molded product is taken out of the mold, and after curing, the mold 5 of the surface layer material 3 is removed. As shown in (d), the surface layer material 3 and the lower layer material 4 are removed.
A pseudo-stone obtained by stacking and was obtained, and the uniaxial compressive strength on the 28th day satisfied the standard value of 330 kg / cm ² . In this example, since the surface layer material was in a semi-solid state, it had elasticity, and the surface layer did not crack even when pressed by a press, and the lower layer material could be easily laminated. Further, since the surface layer material is pressed in a wet state, it is easy to adhere. The surface layer material and the lower layer material can be sufficiently bonded without using an adhesive agent, but by using an adhesive agent on the joint surface as in this example, the lamination becomes easier.

According to a fifth aspect of the present invention, in the pseudo-stone manufacturing process of the second or third aspect, the lower layer material is poured into a mold or a press die, and an iron lattice is used as a reinforcing material while the lower layer material is not solidifying. Is buried. By this method, the strength of the pseudolite can be improved. The reinforcing material embedded in the lower layer material may be a plate-shaped material, and need not be made of iron.

In the embodiments of claims 2 to 5, fine powder generated from the concrete waste material is used as the lower layer material, but the material is not limited to this, and resin waste, hedoro, bentonite, etc. may be used. Good.

[0017]

As described above, according to the present invention, it is difficult to realize by the conventional technique by blending the resin waste with the alumina solidifying agent or the fine aggregate and the alumina solidifying agent. It is possible to manufacture products having the required strength for building materials, paving materials, etc. Further, using stone powder mixed with resin in the surface layer, waste fine powder and an alumina-based solidifying agent in the lower layer or kneaded with water by adding fine aggregate to this, and successively pouring them into a mold to solidify or When is semi-solidified, it is possible to obtain a pseudo-stone having a laminated structure that can be sufficiently endured as a building material or paving material by press-forming with a lower layer. Therefore, by using the method for solidifying industrial waste according to the present invention, it becomes possible to reuse the waste which has been difficult to be appropriately treated conventionally as a raw material for building materials, paving materials and the like.

[Brief description of drawings]

FIG. 1 is a diagram showing the relationship between material age and uniaxial compressive strength in the embodiment of claim 1.

FIG. 2 is a diagram showing a relationship between a pressing surface pressure and a uniaxial compressive strength in the embodiment of claim 1.

FIG. 3 is an explanatory diagram showing a vibrating state of a surface layer material in an embodiment of claim 2;

FIG. 4 is an explanatory diagram showing a structure of a laminated flat plate in an embodiment of claim 2;

5 (a) and 5 (b) are explanatory views of a pseudo-stone manufacturing process in the embodiment of claim 3, (a) shows a state in which a surface layer is put in a press die, (b).
Shows a state in which an adhesive is applied to the surface layer, (c) shows a state in which a lower layer material is poured and press-molded, and (d) shows a completed product.

[Explanation of symbols]

 2,5 type, 3 surface layer material, 4 lower layer material, 6 press dies

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display area // (C04B 28/06 18:04) 2102-4G

Claims (5)

[Claims] 1. An alumina solidifying agent and water, or fine aggregate and an alumina solidifying agent and water are added to powdery resin waste and kneaded, and this is put in a mold. A method for solidifying industrial waste, which is characterized by press molding. 2. A stone powder obtained by crushing natural stone and a molten resin are kneaded, poured into a mold, and defoamed while applying vibration to form a surface layer material, and an alumina solidifying agent and water are added to powdery industrial waste. What was kneaded by adding and kneaded by adding fine aggregate, alumina-based solidifying agent and water to powdery industrial waste as a lower layer material, and the surface layer before the surface layer material solidified. A method for solidifying industrial waste, comprising: pouring the lower layer material on a material and solidifying the lower layer material while applying vibration to obtain a pseudolite having a laminated structure of an artificial stone and an industrial waste. 3. As a surface layer material, stone powder obtained by crushing natural stones and molten resin are kneaded and poured into a mold, and defoamed by applying vibration to be semi-solidified. As a material, a powdery industrial waste is kneaded by adding an alumina-based solidifying agent and water, or a powdery industrial waste is kneaded by adding a fine aggregate, an alumina-based solidifying agent and water The method for solidifying industrial waste, characterized in that a pseudo-stone having a layered structure of artificial stone and industrial waste is obtained by pouring the obtained material into the mold and combining the surface layer material and the lower layer material by press molding. . 4. The surface layer material has a mixture ratio of stone powder obtained by crushing natural stones and resin to 65 to 95% by weight: 5 to 35% by weight, and the lower layer material is industrial waste in powder form, a solidifying agent and water. 50 to 75% by weight: 15 to 35% by weight: 10
30% by weight, or the mixing ratio of powdered industrial waste, fine aggregate, solidifying agent, and water is 25 to 60% by weight: 10 to 45% by weight: 10 to 30% by weight: 10 to 35% by weight. The method for solidifying industrial waste according to claim 2 or 3, characterized in that. 5. The method for solidifying industrial waste according to claim 2, wherein a plate-like or lattice-like reinforcing material is embedded in the lower layer material.