JP2002160962A - Paste material, hardened matter and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paste material, a hardened matter of the same and a manufacturing method therefor, without passing through high temperature firing process, with reduced energy consumption of fossil fuel, etc., and capable of lessening the burden on the environment. SOLUTION: This paste material is obtained by adding an acid solution to a shell incinerated ash or a powdery or particulate Ca-containing compound and by kneading. The paste material is capable of temporarily stopping the hardening reaction by storing under vacuum condition. The hardened matter is obtained by hardening such paste material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kneaded substance for producing a solidified body suitable for a vegetation container and the like, a solidified body obtained by solidifying the kneaded substance, and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, vegetation containers made of pottery (unglazed) or plastic have been put to practical use.

[0003] However, in the case of ceramics, it is necessary to bake at a high temperature, there is a drawback that heat energy such as electricity and fossil fuel is greatly consumed, the environmental load is high, and the price of the ceramic vegetation container is high. In addition, there is a disadvantage that the characteristics of the material may be lost due to the high-temperature firing step, and it is difficult to utilize the characteristics of the material.

[0004] On the other hand, plastics can be mass-produced and inexpensive, but have poor air permeability, and it is difficult to combine other characteristic materials. Also, when forming a vegetation container, it is necessary to use a special molding machine, and when changing the shape, it is necessary to use a corresponding mold, and since this mold is very expensive, it can be formed at low cost. It is impossible to change.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a kneaded material and a solidified material which do not require a high-temperature sintering step, consume less energy such as fossil fuel, and have a low environmental load, and a method for producing them. To provide.

Another object of the present invention is to provide a kneaded substance and a solidified body which can be freely formed at low cost without using a special apparatus, and a method for producing the same.

Another object of the present invention is to reduce the environmental load by using natural waste such as shellfish or industrial waste, and to obtain a kneaded material and a solidified product from which an environmentally friendly molded product can be obtained, and a solidified product thereof. It is to provide a manufacturing method.

[0008] Another object of the present invention is to provide a kneaded material and a solidified body which can make use of the characteristics of a material and can combine functions, and a method for producing the same.

Further objects of the present invention will become apparent from the following description.

[0010]

The above objects of the present invention are attained by the following inventions.

(1) A kneaded substance obtained by adding and kneading an acid solution to shell incineration ash or powdered or granular Ca-containing compound.

(2) The kneaded material according to (1), wherein a ground material or powder of tourmaline is kneaded into the kneaded material.

(Claim 3) The kneaded material according to claim 1 or 2, wherein a carbide or charcoal made of chaff or straw is kneaded into the kneaded material.

(4) The kneaded material according to any one of (1) to (3), wherein the kneaded material is mixed with a chemical fertilizer.

(5) The kneaded substance according to any one of (1) to (4), wherein an organic or inorganic fiber substance is added to and mixed with the kneaded substance.

(6) The kneaded material according to any one of (1) to (5), wherein garbage incineration ash or sludge incineration ash, which is industrial waste, is added to and mixed with the kneaded material. .

(7) The kneaded material according to any one of (1) to (6), wherein at least one kind of air bubbles, balloons, or voids is added to and mixed with the kneaded material.

(Claim 8) A method for producing a kneaded material, comprising storing the kneaded material according to any one of claims 1 to 7 in a vacuum state and temporarily suspending a solidification reaction.

(9) A solidified product obtained by solidifying the kneaded material according to any one of (1) to (7).

(Claim 10) Claims 1, 2, 4, 5, and 6
Or molding the kneaded material according to 7 to obtain a solidified precursor,
A method for producing a solidified precursor, characterized by sprinkling or embedding a carbide or charcoal made of rice hulls or straw, a chemical fertilizer, or an organic fiber substance on the surface of the solidified precursor.

(11) A precursor of a vegetation container is obtained by molding the kneaded material according to any one of (1) to (7), and a drain hole is provided on the bottom surface of the vegetation container precursor. A method for producing a vegetation container, comprising: providing a mesh on an upper surface to prevent vegetation soil from flowing out; and drying the precursor of the vegetation container to manufacture a vegetation container to which the mesh is fixed.

[0022]

Embodiments of the present invention will be described below.

First, the kneaded material of the present invention will be described.

The kneaded material of the present invention can be obtained by adding and kneading an acid solution to shell ash or powdered or granular Ca-containing compounds.

The shell incineration ash used in the present invention can be obtained by incinerating shells discharged as natural waste in an incinerator and is a strong alkali substance. The shell is mainly composed of calcium carbonate, slightly contains calcium phosphate and magnesium carbonate, and has a Ca (calcium) content of about 70%.

In Japan, shells are a problem due to, for example, adhesion to cooling water intake pipes of thermal power plants, and are actually discharged in large quantities, which makes it difficult to dispose of them. The present inventor proposes the present invention to incinerate these discharged shells and to use the resulting incinerated ash to contribute to reducing the environmental burden.

As the powder or granular Ca-containing compound,
Slaked lime, calcium carbonate, quick lime and the like can be mentioned, and slaked lime is preferred from the viewpoint of easy availability and low cost.

As the acid solution, sulfuric acid or hydrochloric acid is used, but sulfuric acid is preferred.

In order to obtain the kneaded material of the present invention, an appropriate amount of an acid solution such as sulfuric acid is added to incinerated shell ash or the like so that the pH becomes 6 to 8. Then, they are mixed and further kneaded to obtain the kneaded substance of the present invention.

If these kneaded substances are air-dried and solidified,
The solidified product of the present invention is obtained. That is, by the reaction between the shell incineration ash where Ca is present and the acid solution, calcium sulfate and calcium chloride are generated in the kneaded material, these contribute as a hardening material, and the above-mentioned kneaded material is only dried naturally. It becomes a solid. Therefore, in the present invention, a solidified body having various uses can be obtained without a firing step as in the related art, without requiring energy such as electricity or fossil fuel. The obtained solidified body shows physical properties similar to concrete in terms of strength, and its versatility is high.

In the present invention, since the kneaded substance exists in a so-called clay state, it can be molded freely, and if its viscosity is adjusted, it can be applied to any molding method (for example, press molding, extrusion molding, etc.). In addition, solidification is fast, so hand-made modeling can be easily performed, and productivity is good.
Furthermore, various composite functions described below can be added by simple means such as kneading, and a molded product that maintains and exhibits the functions and features of the composite material can be obtained.

In the present invention, it is a preferable embodiment to knead a pulverized product or powder of tourmaline into the kneaded material.
Examples of tourmaline include tourmaline and barley stone,
In particular, tourmaline is a crystalline substance and has electrical properties called piezoelectricity, pyroelectricity, and permanent electrodes. When the solid is used as a container for water by kneading such tourmaline, water having a surface active function can be obtained by promoting ionization and reducing clusters due to the electric properties of tourmaline. . In the case of using a solidified body mixed with tourmaline as a vegetation container, although the cause is not clear, it prevents root rot of the plant, germinates and grows the plant,
It has the effect of contributing to growth.

In the present invention, it is also a preferable embodiment to knead a charcoal or charcoal consisting of chaff or straw into the kneaded material. When charcoal or charcoal consisting of chaff or straw is kneaded, when the obtained solidified shaped article is used as a vegetation container, it promotes the propagation of microorganisms effective for plant growth and contributes to the promotion of plant germination. .

Further, in the present invention, an embodiment in which a chemical fertilizer is added to and mixed with the above-mentioned kneaded material is also preferable. When the obtained solid product is used as a vegetation container, it contributes to the promotion of germination of plants.

Further, in the present invention, an embodiment in which an organic or inorganic fiber substance is added to and mixed with the kneaded substance is also preferable. The organic or inorganic fiber substance functions as a so-called aggregate, and exerts an effect of reinforcing the strength of the solidified body. Examples of the inorganic fiber substance include glass fiber and carbon fiber, and examples of the organic fiber substance include straw, wood chip, linen material, and synthetic fibers such as nylon and vinyl. When straw is used as the organic fibrous substance, when the obtained solid shaped product is used as a vegetation container, it also becomes a nutrient source for plants.

Further, in the present invention, an embodiment in which garbage incineration ash or sludge incineration ash, which is industrial waste, is added to the kneaded substance and mixed is also preferable. By using garbage incineration ash or sludge incineration ash, which is industrial waste, it is possible to recycle industrial waste, not only to reduce environmental impact, but also to use these fertilizing components. .

Further, in the present invention, it is also preferable that at least one kind of air bubbles, balloons or voids is added to the kneaded substance and mixed. Mixing bubbles, balloons, or voids has the effect of reducing the weight of the resulting solid. The amount of bubbles is adjusted according to the required strength. Examples of the void material include G light and the like. One kind of air bubbles, balloons or voids may be used, or two or more kinds may be used as a mixture.

The kneaded material of the present invention can be obtained by using the above-mentioned various materials. By storing these kneaded materials in a vacuum state and temporarily stopping the solidification reaction, the kneaded material itself can be used as a product. Can be sold. That is, if the solidification reaction of the kneaded material is stopped, a buyer of the kneaded material can open and solidify the kneaded material at various places to produce shaped articles of various shapes. Consumer products can be sold as they are not only in Japan but also abroad, and consumers can manufacture various shaped products on their own. The kneaded material of the present invention can also be used as a backing of a tile, a caulking material, a joint material, and the like.

The solidified product of the present invention can be obtained by solidifying the above-mentioned kneaded material. Examples of the use of such a solidified product include vegetation containers, ornamental rocks, bonsai scenery, and other various shaped articles.
In addition, when used instead of conventional concrete as a flooring material for ornamental waterfalls in rivers and ponds, as well as for circulation ponds such as inns and restaurants, the combined use of the functions will help to purify the ponds (they will be kneaded into the mixture). Useful straws and the like cause useful bacteria to propagate inside the pond, contributing to reduction of fish diseases and purification of pond water).

In the present invention, the above-mentioned kneaded material is molded to obtain a solidified precursor, and the surface of the solidified precursor is sprinkled with charcoal or charcoal made of rice hulls or straw, chemical fertilizer or organic fiber material. An embodiment in which they are embedded or embedded is also preferable.

In this embodiment, a char or char made of rice husk or straw, a chemical fertilizer or an organic fibrous substance is sprinkled or embedded on the surface of the solidified precursor, and a part or the whole of the surface is exposed (exposed). ) To facilitate their direct contact with plants and the like to exert their effects. Here, the solidified precursor includes all the objects in the process of forming the kneaded material into a solidified material after the solidified material is formed.

When the solidified body of the present invention is used as a vegetation container, a drain hole is usually provided on the bottom surface of the vegetation container. And a net is laid on the bottom surface of the container in order to prevent the vegetation soil from flowing out from the drain hole. Therefore, the mesh of the mesh is of such an extent that the soil does not flow out. As a method for producing such a vegetation container, the above-mentioned kneaded material is molded to obtain a vegetation container precursor (referred to as a precursor because it has not been dried and solidified), and water is formed on the bottom surface of the vegetation container precursor. There is a method of manufacturing a vegetation container in which a hole is provided, a mesh member for preventing the outflow of vegetation soil is provided on the bottom surface, and the vegetation container precursor is dried to fix the mesh member. The net used in such a method may be any of a wire net, a resin net, a cloth net, and the like. According to this method, the mesh can be fixed to the vegetation container, and there is an advantage that the material of the mesh is not limited. Conventionally, vegetation containers have been manufactured by firing, so that it is impossible to fix the mesh in advance and then fire. This is because the net-like body (especially in the case of resin or cloth) is burned off in the firing stage. Therefore, conventionally, the container and the mesh have been separately manufactured and used. On the other hand, in the present invention, the net and the container function integrally.

[0043]

The present invention will be further described below with reference to examples.

Example 1 A kneaded material was produced using the materials shown in the following formulation examples so that the pH was 6 to 8. In addition, the weight% display described below represents the weight% with respect to the amount of solids (hereinafter, referred to as "%").
the same. ).

(Formulation Example 1) Shell incineration ash 100% by weight Sulfuric acid aqueous solution (30% concentration) 35-70% by weight

The above kneaded material was air-dried to obtain a solidified body, and the solidified body was measured for its compressive strength (measured by a compressive strength test method of JIS A 1108 cocrete) and specific gravity. Table 1 shows the results.

Example 2 A solidified body was obtained in the same manner as in Example 1 except that the formulation was changed as follows. The solidified body was measured for compressive strength and specific gravity, and the results are shown in Table 1.

(Formulation Example 2) Shell incineration ash 50% by weight Sulfuric acid aqueous solution (30% concentration) 35-70% by weight G-light 50% by weight

Example 3 A solidified body was obtained in the same manner as in Example 1 except that the formulation was changed as follows. The solidified body was measured for compressive strength and specific gravity. The results are shown in Table 1.

(Formulation Example 3) Shell incineration ash 50% by weight Sulfuric acid aqueous solution (30% concentration) 35-70% by weight Sludge incineration ash 50% by weight

(Table 1) Compressive strength Specific gravity Example 1 40 kg / cm ² 1.00 Example 2 150 kg / cm ² 0.98 Example 3 320 kg / cm ² 1.50

From Table 1, it can be seen that the compressive strength of Example 1 is about the same as that of concrete, and when G light is mixed as in Example 2, the compressive strength becomes about 4 times that of Example 1 and the specific gravity decreases. It can be seen that a solidified body having reduced weight and excellent strength can be obtained. In addition, in Example 3, when the sludge incineration ash was mixed, the specific gravity was increased, but the compressive strength was increased to eight times that of Example 1.

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Claims (11)

[Claims] 1. A kneaded substance obtained by adding and kneading an acid solution to shell incineration ash or a powdery or granular Ca-containing compound. 2. The kneaded material according to claim 1, wherein a ground material or powder of tourmaline is kneaded into said kneaded material. 3. The kneaded material according to claim 1, wherein charcoal or charcoal made of chaff or straw is kneaded into the kneaded material. 4. The mass according to claim 1, wherein a chemical fertilizer is added to and mixed with the mass. 5. The kneaded material according to claim 1, wherein an organic or inorganic fiber material is added to and mixed with the kneaded material. 6. The mass according to any one of claims 1 to 5, wherein garbage incineration ash or sludge incineration ash, which is industrial waste, is added to and mixed with the mass. 7. The kneaded substance according to claim 1, wherein at least one kind of air bubbles, balloons, or voids is added to and mixed with the kneaded substance. 8. A method for producing a kneaded material, comprising storing the kneaded material according to claim 1 in a vacuum state and temporarily suspending a solidification reaction. 9. A solidified material obtained by solidifying the kneaded material according to claim 1. 10. A solidified precursor obtained by molding the kneaded material according to claim 1, 2, 4, 5, 6, or 7, and a carbide comprising rice hull or straw on the surface of the solidified precursor. Or charcoal,
A method for producing a solidified precursor, which comprises sprinkling or embedding a chemical fertilizer or an organic fiber substance. 11. A vegetation container precursor is obtained by molding the kneaded material according to any one of claims 1 to 7, a drain hole is provided on a bottom surface of the vegetation container precursor, and vegetation is provided on an upper surface of the bottom surface. A method for producing a vegetation container, comprising: providing a mesh to prevent the outflow of soil; and drying the precursor of the vegetation container to manufacture a vegetation container to which the mesh is fixed.