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Method for preparing ceramic tile from high-aluminum fly ash

A high-aluminum fly ash and ceramic technology, which is applied in the field of waste utilization of coal combustion residues, can solve the problems of not having ceramic bricks, and achieve the effects of environmental protection, huge economic benefits, social value, and high added value

Inactive Publication Date: 2015-06-10
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] As mentioned above, although the prior art of using fly ash to prepare ceramic products has existed, there is still no prior report and technology of using fly ash to prepare ceramic bricks

Method used

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  • Method for preparing ceramic tile from high-aluminum fly ash
  • Method for preparing ceramic tile from high-aluminum fly ash
  • Method for preparing ceramic tile from high-aluminum fly ash

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] A, batching: take the raw material in the above table 1 of following mass percentage: 70% high alumina fly ash, 14% clay, 12% feldspar, 4% quartz, then mix uniformly, obtain batching;

[0083] B, ball milling: the batching is packed in the ball mill, and add water and anhydrous sodium carbonate and carry out ball milling, wherein the mass ratio of batching, ball mill grinding ball and water is 1:1:1.5, the quality of added anhydrous sodium carbonate is batching 0.1% of the mass; the ball milling time is 10 hours, and the sieve with ten thousand holes is 0.5%;

[0084] C. Slurry and drying: Slurry after ball milling is carried out, and the slurry is removed by an electromagnetic powder iron remover with a magnetic field strength of 10,000 gauss, and then dried at 80°C until the moisture content in it is 4 %;

[0085] D, granulation: grind the dried material in step C, mix and granulate, and pass through a 100-mesh sieve twice;

[0086] E. Stale: Encapsulate and stale f...

Embodiment 2

[0091] A. Ingredients: Weigh the raw materials in the above table 1 in the following mass percentages: 64% high-alumina fly ash, 15% clay, 12% feldspar, 9% quartz, and then mix them evenly to obtain the ingredients:

[0092] B, ball mill: batching is packed in ball mill, and add water and anhydrous sodium carbonate and carry out ball milling, wherein the mass ratio of batching, ball mill grinding ball and water is 1:1.5:2.5, the quality of added anhydrous sodium carbonate is batching 0.2% of the mass; the ball milling time is 15 hours, and the sieve with ten thousand holes is 0.7%;

[0093] C. Slurry and drying: Slurry after ball milling is carried out, and the slurry is removed by an electromagnetic powder iron remover with a magnetic field strength of 20,000 gauss, and then dried at 100°C until the moisture content in it is 5 %;

[0094] D, granulation: Grind, mix and granulate the dried material in step C, and pass through a 100-mesh sieve for 3 times;

[0095] E. Stale: ...

Embodiment 3

[0100] A. Ingredients: Weigh the raw materials in the above table 1 in the following mass percentages: 66% high alumina fly ash, 13% clay, 15% feldspar, 6% quartz, and then mix evenly to obtain the ingredients:

[0101] B, ball mill: batching is packed in the ball mill, and add water and anhydrous sodium carbonate and carry out ball milling, wherein the mass ratio of batching, ball mill grinding ball and water is 1:2:3, the quality of added anhydrous sodium carbonate is batching 0.3% of the mass; the ball milling time is 20 hours, and the remainder of the 10,000-hole sieve is 0.8%;

[0102] C. Slurry and drying: Slurry after ball milling is carried out, and the slurry is removed by an electromagnetic powder iron remover with a magnetic field strength of 30,000 gauss, and then dried at 110°C until the moisture content in it is 6 %;

[0103] D, granulation: Grind the dried material in step C, and pass through a 100-mesh sieve twice;

[0104] E. Stale: Encapsulate and stale for...

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Abstract

The invention relates to a method for preparing a ceramic tile from high-aluminum fly ash. The method comprises the steps of: burdening, ball milling, slurry discharge and drying, granulation, ageing, molding, drying and sintering. By selecting an appropriate burdening dosage ratio, an iron removal process and the treatment process parameters of each step, the porcelain tile in line with the national standard can be prepared, and can be widely used in the fields of building and decoration. By using fly ash, a lot of natural clay, feldspar and quartz materials are saved, comprehensive utilization of high-aluminum fly ash is realized, and the added value of high-aluminum fly ash is enhanced. The method provided by the invention has good social, economic and environmental benefits, and has enormous industrial application prospects and economic value.

Description

technical field [0001] The invention relates to a waste utilization method of coal combustion residues, more specifically, the invention relates to a method for preparing ceramic bricks by using high-aluminum fly ash, which belongs to the fields of reprocessing and utilization of solid waste and ceramic production. Background technique [0002] Fly ash is a kind of solid waste produced in the production process of coal-fired power plants, and its output accounts for about 5-20% of the total coal combustion, so its output is huge. [0003] At present, the annual discharge of fly ash in the world is about 500 million tons. Since coal has been the most important part of energy sources in my country for a long time, a huge amount of fly ash is produced every year. At present, the amount of fly ash stacked in my country is More than 1.5 billion tons, the ash storage site occupies more than 40,000 hectares of land. [0004] For a long time, the comprehensive utilization of fly ash...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/135C04B33/22
CPCY02P40/60
Inventor 张作泰胡勇陈玉清
Owner PEKING UNIV
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