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Porous ceramic material and preparation method thereof

A technology for porous ceramics and ceramic waste, which is applied to ceramic products, other household utensils, household utensils, etc. It can solve the problems of not involving the reuse of ceramic waste, the high price of organic foaming agents, and the limitation of practical application, so as to achieve easy operation Control, reduce raw material cost, and reduce environmental pollution

Inactive Publication Date: 2008-05-28
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the process of making porous ceramics, organic foaming agents are usually used to create pores, but due to the high price of organic foaming agents, their practical applicability is greatly limited
At present, there are reports on utilizing polished brick waste to prepare ceramic tiles (China No. 200410079020.9 invention patent application), light ceramic material (China No. 02114605.5 invention patent), but the raw materials used in these technologies are all polished waste mud and waste slag of polished bricks. The range of raw materials is relatively narrow, does not involve the reuse of other ceramic waste (such as clinker, etc.), and also needs to be doped with expensive foaming agents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In the first step, 120 grams of ceramic polishing waste, 60 grams of ceramic waste, 30 grams of intermediate ball soil, 30 grams of Hunan white sand, 60 grams of B5 sand (produced by Nanhai Dongxing Taobao Ceramic Raw Material Factory), 150 grams of water, and 0.6 grams of tripolyphosphoric acid Sodium and 1.2 grams of carboxymethyl cellulose were mixed and added to a ball mill, wet ball milled for 10 minutes, and dried through a 60-mesh sieve;

[0022] The second step is to press the material on a ceramic press at 8MPa to form a ceramic brick body, dry it to constant weight, and burn it in a ceramic roller kiln at 1140°C for 100 minutes to obtain a porous ceramic material.

[0023] In order to ensure the yield of ceramics, the ignition loss of ceramic polishing waste in this embodiment is about 3%, so as to ensure that the compounds therein decompose and foam to produce ideal pores without deformation.

Embodiment 2

[0025] The first step is to mix 120 grams of ceramic polishing waste, 120 grams of ceramic waste, 15 grams of high white ball soil, 30 grams of Hunan white sand, 15 grams of transparent white sand, 150 grams of water, 0.3 grams of sodium tripolyphosphate, and 0.6 grams of sodium humate into the ball mill , wet ball milling for 10 minutes, passed through a 60-mesh sieve and dried;

[0026] In the second step, the material is pressed on a ceramic press at 8 MPa to form a ceramic brick body, dried to constant weight, and fired at 1150°C for 200 minutes in a ceramic roller kiln to obtain a porous ceramic material.

Embodiment 3

[0028] The first step is to mix 50 grams of ceramic polishing waste, 200 grams of ceramic waste, and 25 grams of water into the ball mill. After wet ball milling, pass through a 30-mesh sieve, and the remaining 0.5-1% of the sieve will pass through a 60-mesh sieve after vibration drying and granulation. ;

[0029] The second step is to press the material on a ceramic press at 5 MPa to form a ceramic brick body, dry it to a constant weight, and burn it in a ceramic roller kiln at 1300°C for 20 minutes to obtain a porous ceramic material.

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PUM

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Abstract

The invention discloses a porous ceramic material and a preparation method thereof. The invention comprises 5-50 portions of ceramic polishing waste, 20-50 portions of ceramic waste, 0-20 portions of ceramic clay, 0-15 portions of high temperature sand, 0-15 portions of low temperature sand by weight; the raw materials are mixed and water of 10-60 percent of the total weight of the raw materials is added, then 0-3 portions of grinding aids and 0-3 portions of binders are added and wet ball-milling is carried out; the mixture is pressed into a ceramic brick body and the invention can be obtained after the ceramic brick body is put into a ceramic roller kiln to be burned. The invention makes full of the ceramic waste and self foaming mechanism of the polishing brick waste, needs no foaming agent and can produce the porous ceramic material with light weight, low thermal conductivity and high strength. The invention has simple technique, the operation is easy to be controlled and the product has the functions of insulation, heat insulation, sound proof and fire proof, etc.

Description

technical field [0001] The invention relates to the technical field of inorganic materials, in particular to a porous ceramic material and a preparation method thereof. Background technique [0002] With the acceleration of urbanization and industrialization in our country and the gradual development of the construction of new socialist countryside, the construction area of ​​houses completed every year is about 2 billion square meters. It is estimated that by the end of 2020, the national housing construction area will increase by 25 to 30 billion square meters. But so far, almost all buildings are not energy efficient. It is extremely important and urgent to save land, energy, fresh water and mineral resources. [0003] In my country's total energy consumption, building energy consumption accounts for about 30% (in addition, industrial energy consumption accounts for 60%, and transportation energy consumption accounts for 10%). Among them, air-conditioning energy consum...

Claims

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Application Information

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IPC IPC(8): C04B38/00C04B35/622
Inventor 税安泽刘艳春夏海斌曾令可刘平安程小苏王慧
Owner SOUTH CHINA UNIV OF TECH
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