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Method for producing thinned ceramic tile by recycling of waste incineration fly ash

A technology of waste incineration fly ash and ceramic bricks, which is applied in the production, application, and household appliances of ceramic materials to achieve the effects of reducing impact, lowering sintering temperature, and low cost

Inactive Publication Date: 2015-09-09
内江博达科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the production process of ceramic tiles using fly ash as an auxiliary raw material, if there is no pre-treatment, under the conditions of water and acid or alkali, there will be problems in the preparation process such as batching, grinding and mixing, and transportation. The potential danger of the dissolution and migration of heavy metal ions will endanger the health of workers and pollute the factory environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0041] 1. Principle treatment: add water to the fly ash to form a slurry, then add a compound chemical stabilizer, the ratio of water to the mass of the fly ash is 0.5L / kg, pass the incineration flue gas of the waste incineration plant into the above slurry, every The ventilation flow rate of the flue gas per kilogram of fly ash is 0.1m 3 / min, the chemical stabilizer is 5wt% relative to the total weight of the fly ash, the chemical stabilizer is sodium carbonate and sodium phosphate compounded at a mass ratio of 1:1, and the fully treated fly ash slurry can be used as raw materials for ceramic tiles;

[0042] 2. Ingredients: 10 parts of incineration fly ash, 5 parts of bluestone, 4 parts of inner wall marble, 10 parts of white sand, 12 parts of Lianjie sand, 8 parts of 8# clay, 14 parts of 6# clay, 6 parts of Rongxian clay, Tian'e clay 7 parts, 21 parts of Yongchuan clay, 2 parts of Weiyuan mung bean paste, 1 part of Guizhou bauxite, and 0.5 parts of water reducing agent; ...

example 2

[0053] 1. Principle treatment: add water to the fly ash to form a slurry, then add a compound chemical stabilizer, the ratio of water to the mass of the fly ash is 0.3L / kg, pass the incineration flue gas of the waste incineration plant into the above slurry, every The ventilation flow rate of the flue gas per kilogram of fly ash is 0.2m 3 / min, the chemical stabilizer is 5wt% relative to the total weight of the fly ash, the chemical stabilizer is sodium sulfide and sodium monohydrogen phosphate in a mass ratio of 1:1, and the fully treated fly ash slurry is ready after drying Can be used as raw material for ceramic tiles;

[0054] 2. Ingredients: 10 parts of incineration fly ash, 5 parts of bluestone, 4 parts of inner wall marble, 10 parts of white sand, 12 parts of Lianjie sand, 8 parts of 8# clay, 14 parts of 6# clay, 6 parts of Rongxian clay, Tian'e clay 7 parts, 21 parts of Yongchuan clay, 2 parts of Weiyuan mung bean paste, 1 part of Guizhou bauxite, and 0.5 parts of wa...

example 3

[0065] 1. Principle treatment: add water to the fly ash to form a slurry, then add a compound chemical stabilizer, the ratio of water to the mass of the fly ash is 0.3L / kg, pass the incineration flue gas of the waste incineration plant into the above slurry, every The ventilation flow rate of the flue gas per kilogram of fly ash is 0.3 m3 / min, the proportion of chemical stabilizing agents relative to the total weight of fly ash is 3wt%, and the chemical stabilizing agent is sodium sulfide, sodium monohydrogen phosphate and phosphoric acid in a mass ratio of 1:1:1, and the fly ash slurry is fully treated After drying, it can be used as a raw material for ceramic tiles;

[0066] 2. Ingredients: 10 parts of incineration fly ash, 5 parts of bluestone, 4 parts of inner wall marble, 10 parts of white sand, 12 parts of Lianjie sand, 8 parts of 8# clay, 14 parts of 6# clay, 6 parts of Rongxian clay, Tian'e clay 7 parts, 21 parts of Yongchuan clay, 2 parts of Weiyuan mung bean paste,...

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Abstract

The invention discloses a method for producing a thinned ceramic tile by recycling of waste incineration fly ash and realizing the innocent treatment of waste incineration fly ash. The method comprises the following steps of treating waste incineration fly ash by using a smoke carbonation stable chemical process, blending the ash with the raw materials, and carrying out the work sequences of ball-milling, sieving, pelleting, molding, glazing, sintering and the like, so as to obtain a high-quality thinned ceramic tile which has the indexes such as the green brick thickness of 4.5-6mm, the shrinking percentage within 2%, the water absorption rate of 11%-13% and the rupture modulus of 15-20MPa. According to the invention, hazardous wastes, namely rubbish incineration fly ash, can be recycled as a raw material for developing thinned ceramic tiles, heavy metals in fly ash are solidified by the smoke carbonation stable chemical process, and dioxin in the fly ash can be thoroughly destroyed by calcination, thereby achieving the aims of innocent treatment and resourceful treatment of waste incineration fly ash.

Description

Technical field: [0001] The invention relates to a method for preparing thin ceramic bricks, in particular to a method for producing thin ceramic bricks by using waste incineration fly ash as a raw material. Background technique: [0002] The rapid growth of municipal solid waste has become an important issue restricting the sustainable development of cities. According to statistics, the accumulated waste has reached 7 billion piles over the years, occupying about 800,000 mu of land, causing potential impact and harm to the environment. . Garbage incineration technology can effectively destroy organic toxic substances, greatly reduce the volume of garbage, generally can be reduced to 5% to 30% of the original volume, and the waste heat generated by incineration can also be recycled. One of the main methods of harmless and volume reduction technology. However, a certain amount of incineration ash will be produced after garbage incineration. Incineration ash is the discha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/135C04B33/24C04B33/34
CPCY02P40/60
Inventor 刘燕李豫军杨为中孙晓龙张萍
Owner 内江博达科技有限公司
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