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Method for preparing no-foaming and no-deformation ceramics by utilizing ceramic waste

A technology of ceramic waste and ceramics, which is applied in the production of ceramic materials, solid waste removal, and application. It can solve the problems of low utilization rate of ceramic waste, product foaming and deformation, and difficulty in resource utilization, so as to promote green production. , reduce the cost of raw materials, and achieve the effect of efficient resource utilization

Inactive Publication Date: 2010-03-17
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ceramic waste utilization rate of these technologies is not high (the proportion of ceramic waste in the raw material is generally lower than 70%), and it is easy to cause foaming and deformation of the product during firing (the higher the proportion of ceramic waste, the more easy to cause foaming and deformation)
On the one hand, these technologies are limited to the production of porous lightweight (foamed) ceramic tiles, on the other hand, due to their severe deformation, the yield is low
It is difficult to realize high-efficiency (high ratio) resource utilization of ceramic waste through the current existing technology, and it is quite difficult to implement green production of ceramic waste with zero discharge in the ceramic industry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The first step is to mix 1 gram of ceramic polishing waste, 40 grams of kaolin, 30 grams of quartz sand, 28 grams of potassium feldspar, 1 gram of industrial alumina, 150 grams of water, 0.6 grams of sodium tripolyphosphate, and 1.2 grams of carboxymethyl cellulose Add it to a ball mill, wet ball mill for 20 minutes, and pass through a 30-mesh sieve to dry;

[0026] The second step is to press the material on a ceramic press at 5MPa to form a ceramic brick body, dry it to constant weight, and fire it at 1300°C for 150 minutes. After firing, the sample has no foaming, no deformation, and the surface is flat and smooth. The flexural strength of the sample reaches 45MPa when tested with a digital display ceramic tile flexural testing machine SKZ-500 from Xiangtan Instrument Co., Ltd.

Embodiment 2

[0028] In the first step, mix 80 grams of ceramic polishing waste, 10 grams of ceramic waste, 10 grams of industrial alumina, 50 grams of water, 0.6 grams of sodium tripolyphosphate, and 0.5 grams of carboxymethyl cellulose into the ball mill, and wet ball mill for 60 minutes , and dried through a 30-mesh sieve;

[0029] The second step is to press the material on a ceramic press at 50MPa to form a ceramic brick body, dry it to constant weight, and fire it in a ceramic roller kiln at 1200°C for 30 minutes.

[0030] After firing, the sample has no foaming, no deformation, and the surface is smooth and smooth. The flexural strength can reach 38MPa by the same method.

Embodiment 3

[0032] The first step is to mix 70 grams of ceramic polishing waste, 15 grams of ceramic waste bricks, 15 grams of aluminum powder, 100 grams of water, 0.5 grams of sodium tripolyphosphate, and 0.5 grams of carboxymethyl cellulose into the ball mill, and wet ball mill for 80 minutes. Pass through a 30-mesh sieve and dry;

[0033] The second step is to press the material on a ceramic press at 60MPa to form a ceramic brick body, dry it to constant weight, and fire it in a ceramic roller kiln at 1150°C for 60 minutes.

[0034] After firing, the sample has no foaming, no deformation, and the surface is smooth. The flexural strength can reach 32MPa by the same method.

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Abstract

The invention discloses a method for preparing no-foaming and no-deformation ceramics by utilizing ceramic waste, comprising the following steps: all raw materials are mixed by weight percentage: 1-99percent of ceramic waste, 0-40 percent of ceramic clay, 0-30 percent of quartz, 0-35 percent of feldspar and 1-50 percent of aluminum oxide or aluminous rich matter; water is added by 50-150 percentof total weight of the raw materials, and 0.5-5 percent of grinding aids and 0.5-5 percent of binders are added to carry out ball-milling, the no-foaming and no-deformation ceramics can be prepared bydrying, formation and sintering. The technology provide by the invention not only solves the problem of the treatment of a great amount of ceramics in ceramic industry, but also solves excessive consumption problem of raw material resource in the ceramic industry, thereby greatly reducing the waste discharge in the ceramic industry and reducing environmental pollution caused by accumulation and land filling of the ceramic waste. The technology has the advantages of high waste utilization rate, simple process and low cost.

Description

technical field [0001] The invention relates to the technical field of utilization of ceramic waste, in particular to a method for preparing ceramics from ceramic waste. Background technique [0002] In recent years, my country's architectural ceramics industry has developed rapidly. In 2007, the output reached 5.6 billion square meters. In 2008, the output is expected to be around 6.2 billion square meters (an increase of about 11% over 2007), accounting for about 50% of the world's total output. , the situation is very good. However, its negative effects - excessive consumption of resources (raw materials, energy) and environmental pollution are becoming more and more prominent. A large amount of ceramic waste generated during the production process (among which polished brick waste accounts for more than half) seriously pollutes our water and soil environment and seriously hinders the sustainable development of the ceramic industry. Therefore, the development of a high-e...

Claims

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Application Information

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IPC IPC(8): C04B33/00C04B33/132C04B35/622B09B3/00
CPCY02P40/60
Inventor 税安泽奚修安夏海斌王慧程小苏刘平安王燕民
Owner SOUTH CHINA UNIV OF TECH
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