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Method for firing porous filtering ceramic tiles with ceramic polishing scrap

A technology for ceramic polishing waste and ceramic tiles, which is applied in the removal and application of ceramic products and solid waste, can solve the problems of complex process and high cost, and achieve the effects of low bulk density, low product cost and wide application range.

Inactive Publication Date: 2010-05-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the deficiencies of the above-mentioned prior art, the primary purpose of the present invention is to provide a method for firing porous filter ceramic tiles from ceramic polishing waste; Firing porous filter ceramic bricks with light magnesia and other raw materials can not only effectively solve the problem of building ceramic polishing waste, save natural ceramic raw materials, but also solve the problems of high cost and complicated process of traditional porous filter ceramic bricks

Method used

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  • Method for firing porous filtering ceramic tiles with ceramic polishing scrap
  • Method for firing porous filtering ceramic tiles with ceramic polishing scrap
  • Method for firing porous filtering ceramic tiles with ceramic polishing scrap

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: (Process flow such as figure 1 As shown, the firing curve is as figure 2 Shown)

[0034] Using polishing waste, calcined alumina, calcined talc and light magnesia as raw materials, the chemical composition of porous filter ceramic tiles is shown in Table 2. Heavy oil is used as fuel, and its heat of combustion is 41868KJ / Kg.

[0035] (1) Raw material processing: First, the polishing waste (loss on ignition is 2.01%) and calcined alumina (loss on ignition 3.99%) are coarsely crushed and sieved; then, the polishing waste is weighed 70Kg, calcined alumina 19Kg, Combine 35Kg of burnt talc and 2Kg of light magnesium oxide, add sodium tripolyphosphate (additive) which accounts for 0.5% of the total mass of the above substances; finally, put it into a ball mill for wet ball milling. The ball milling medium is alumina. The amount of ball mill The ratio is large: medium: small = 5: 2: 3, ball milling time is 20 hours, a slurry with a water content of 33% is obtained, an...

Embodiment 2

[0041] With polishing waste, calcined alumina, and calcined talc as the main raw materials, the chemical composition of porous filter ceramic tiles is shown in Table 2, and the combustion heat value of the fuel is 45218KJ / Kg.

[0042] (1) Raw material processing: firstly, coarsely pulverize the polishing waste (loss on ignition is 8.99%) and calcined alumina (loss on ignition 0.10%) and sieving; then, weigh the polishing waste 50Kg, calcined alumina 22Kg and Combine 28Kg of burnt talc and add sodium tripolyphosphate (additive) which accounts for 0.5% of the total mass of the above raw materials; finally, put it into a ball mill for wet ball milling. The ball milling medium is alumina, and the dosage ratio of the ball mill is large: medium: Small=5:2:3, the ball milling time is 22 hours, the slurry with a water content of 33% by mass is obtained, the sieve residue is less than 0.1% (mass percentage), and the flow time is 34s in the coating 4 viscosity cup;

[0043] (2) Powder prepar...

Embodiment 3

[0048] With polishing waste, calcined alumina, calcined talc and light magnesia as the main raw materials, the chemical composition of the porous filter ceramic tile is shown in Table 2. The combustion heat value of the fuel is 43318KJ / Kg.

[0049] (1) Raw material processing: firstly, coarsely pulverize polishing waste (loss on ignition: 4.63%) and calcined alumina (loss on ignition: 2.99%) and sieving; then, weigh the polishing waste 60Kg, calcined alumina 18Kg, 30Kg of burnt talc and 7Kg of light magnesium oxide are mixed, and 0.3% of the total mass of the above-mentioned substances is added with sodium tripolyphosphate (additive); finally, it is put into a ball mill for wet ball milling, the ball milling medium is alumina, and the amount of ball mill The ratio is large:medium:small=5:2:3, the ball milling time is 25 hours, the slurry with a water content of 32% is obtained, the sieve residue is 0.5% (mass percentage), and the fluidity is in the outflow time of the 4 viscosity ...

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Abstract

The invention discloses a method for firing porous filtering ceramic tiles with ceramics polishing scrap. The method is implemented through raw materials processing, powder preparation, pressing molding, sintering and other processes performed on 50 to 70 percent of building ceramics polishing scrap mixed with 18 to 22 percent of calcined alumina, 0 to 10 percent of fired talc and 28 to 35 percent of light magnesium oxide. The porous filtering ceramic tiles prepared by the method not only have the function of protecting and purifying environment, but also have high modulus of rupture and good filtration performance. The method can effectively solve the problem of dealing with the building ceramics polishing scrap, can save natural ceramic raw materials, is simple in technological process of utilizing the ceramics polishing scrap to fire cordierite porous filtering ceramic tiles and low in cost, and has good application prospects in the fields of liquid pollution treatment, precise filtration and the like.

Description

Technical field [0001] The invention belongs to the preparation field of porous filtering ceramic materials, and specifically refers to a porous filtering ceramic tile fired by using building ceramic polishing waste and a preparation method thereof. Background technique [0002] The output of building ceramics in my country has exceeded 5.0×10 9 m 3 , Ranking first in the world for many years, and the polishing waste generated in the production process reaches more than 5 million tons per year, which not only takes up land, but also pollutes the ecological environment. Therefore, the comprehensive utilization of building ceramic polishing waste has become a hot issue shared by building ceramic manufacturers and ceramic science and technology workers, and it has been listed as one of the key technologies for environmental protection and clean production in key breakthrough bidding projects in Guangdong and Hong Kong. Currently, building ceramic polishing waste is mostly used to ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B35/622C04B35/14B09B3/00
Inventor 吴清仁谢代义吴启坚
Owner SOUTH CHINA UNIV OF TECH
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