JPH0829313B2 - Manufacturing method of ceramic raw materials and manufacturing method of fired products using incinerated ash of municipal waste - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for producing a ceramic raw material by making ash produced by incinerating municipal solid waste non-polluting, and a ceramic raw material obtained by the method.
The present invention relates to a method of manufacturing a product .

[0002]

2. Description of the Related Art Municipal solid waste has increased rapidly in recent years, and its disposal has become a problem. Combustibles in municipal waste are landfilled as they are, or incinerated and disposed of.
However, since various compounds such as nitrogen, sulfur, and chlorine are present in a complicated form in the incinerated ash of municipal waste, it is neutralized by mixing lime, soda, etc.
It decomposes over time and secondary pollution occurs. An effective technique for solving this has not been developed yet.

[0003]

The problem to be solved by the present invention is to make municipal waste incineration ash pollution-free and utilize it as a raw material for ceramics.

[0004]

As a means for solving the problem as this Means for Solving the Problems] The invention of claim 1, heated to melt the municipal waste incineration ash, pulverized slag obtained by cooling configuration and then, also, the invention of claim 2, and configured to melt a mixture of wastes such as sewage sludge municipal waste incineration ash, furthermore, the invention of claim 3, claim 1 or claim
Ceramic raw materials obtained by the method for manufacturing ceramic raw materials according to 2.
The product is made by mixing and kneading the raw material composition adjusting material for ceramics with water.
800 ℃ ~ 1110 ℃ after molding into a shape and drying the molded product
It was configured to produce a fired product by firing at.

[0005]

The function and effect of the present invention: Since this slag is once melted, the bulk becomes small and the bulk ratio becomes stable. Moreover, no odor is generated due to the complete combustion, and no secondary pollution is caused because the hardly decomposable basic compound such as PCB is decomposed. Exhaust gas generated during melting is regenerated into stable salt by neutralizing with soda. Therefore, the incineration ash is made pollution-free.

[0006] The composition of slag varies depending on the location where municipal solid waste is generated, but it is within a certain range and is similar to the glaze of ceramics, so it can be used in the same manner as conventional ceramic raw materials, either alone or in the past. Various ceramic products can be produced by using the conventional ceramic product manufacturing method as it is, by combining with the ceramic raw materials of, and setting various temperatures.

[0007]

EXAMPLES Example 1 Municipal solid waste incineration ash was heated to 1450 ° C., melted and then cooled, and the obtained slag was finely pulverized,
Bentonite was added to this in an amount of 5 to 10% to adjust the water content to 6%, press-molded into a size of 600 mm x 600 mm x 10 mm, dried and baked at 1000 ° C to give a cream color. A ceramic board with little shrinkage and water absorption was created.

Example 2 70% of municipal waste incinerated ash and 30% of sewer sludge were mixed, heated and melted, then cooled, and finely ground 70% of slag and 30% of gravel suihi clay were mixed with water of 20%, and then soil. By extruding with a kneader, press-molding, and baking at 900 ° C., a roof tile substrate colored in brown and having a water absorption rate of 3% was obtained. Glazed tiles or smoked tiles were obtained by applying glaze or smoked to them.

Example 3 90% of municipal waste incineration ash and 10% of sewer sludge were melted at the same time, 60% of slag finely ground after cooling, and 40% of washing sand clay of Sagami region were mixed to make water content 23%, and an extruder was used. Width 300 mm, thickness 20 mm, length 10
When it was molded into a 00 mm plate, dried and baked at 1100 ° C. in a roller hearth kiln, a sizing ceramic plate colored with a chicorylate color without shrinkage and having almost no water absorption was formed.

Example 4 90% of municipal waste incinerated ash and 10% of crushed material of non-combustible municipal waste such as glass, ceramics, concrete, etc. were mixed and melted, and the slag obtained by slow cooling was roughly crushed,
This is screened to a particle size of 2 mm or less. 70%, iron oxide 10%, and shale clay 20% are adjusted to have a water content of 8% with a small amount of water glass, and bricks are dry-molded with a brick press. After drying, baking at 800 ° C
A tasteful brick with a black surface and no shrinkage or water absorption and a rough surface was obtained.

Example 5 The product produced by the method of Example 1 using the slag obtained by simultaneously melting 10% of chrome smelting sludge in municipal waste incineration ash turned into a dark-colored porcelain plate with a brown raised surface.

Example 6 Municipal refuse incineration ash was melted, and cooled slag was coarsely crushed and sieved to a particle size of 5 mm or less. 70% of this slag, 15% of cement, 10% of shale clay,
Mix 5% water glass to adjust the water content to 30% and add 3
By casting into a mold of 00 mm × 300 mm × 60 mm, molding, and drying and baking at 1050 ° C., a yellowish rough pavement block having excellent wear resistance was obtained.

Example 7 Municipal refuse incineration ash was melted, cooled and then finely ground 60% slag, 30% clay generated during limestone mining, and 10% sericite porcelain stone were mixed to adjust the water content to 18%. Then, it was extrusion molded with a vacuum clay kneader, dried, and baked at 900 ° C. to obtain a porcelain tube with a grayish brown color and a water absorption rate of 3%.

Example 8 50% of municipal waste incineration ash and 50% of sewer sludge were mixed and melted, and water was added to a cooled mixture of 74% of slag, 5% of sodium bentonite and 1% of silicon carbide, and wet grinding was performed. 20% cement was added to the sludge and molded into an arbitrary size with a dehydration molding machine. When this was dried and calcined at 1100 ° C, a calcined product foamed to a bulk specific gravity of 0.5 was obtained. A lightweight heat insulating material was obtained by cutting this into an arbitrary size.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location C04B 35/00 C04B 35/00 V (56) References JP-A-53-88657 (JP, A) JP-A-2-261587 (JP, A) Tsutomu Fukumoto "Waste treatment engineering" (1980-7-1) Asakura Shoten Co., Ltd. 162 ~ 171

Claims (3)

[Claims] 1. The municipal waste incineration ash is heated until it is melted,
To crush the slag obtained by cooling to an appropriate particle size
A method for manufacturing a ceramic raw material using municipal waste incineration ash, which is characterized by making it a more ceramic raw material . 2. The method for producing a ceramic raw material using municipal waste incineration ash according to claim 1, wherein waste materials such as sewer sludge are mixed with the municipal waste incineration ash and melted. 3. The ceramic raw material according to claim 1 or 2.
Ceramic raw materials obtained by the manufacturing method of
The material is mixed with water and kneaded to form the product shape.
After baking the mold, baking at 800 ℃ ~ 1100 ℃
A method for manufacturing a fired product, which is characterized by producing a more fired product.
Law.