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Preparation method of antifouling heat insulation light ceramics

A light-weight ceramic and antifouling technology, which is applied to clay products, other household appliances, household appliances, etc., can solve the problems of increased production cost, complicated production process, high temperature resistance, and reduced wear resistance, so as to reduce the cost of raw materials, The effect of simple process and low water absorption

Active Publication Date: 2010-07-21
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this will definitely lead to: 1. Increased production cost; 2. Complicated production process; 3. Reduced high temperature resistance and wear resistance (because most of them contain organic polymer materials)
Therefore, there are relatively large defects in the preparation of environmentally friendly antifouling, heat insulation, and lightweight ceramics with existing technologies.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In the first step, 15 parts of ceramic waste residue, 15 parts of cinder, 15 parts of dredging mud, 90 parts of clay, 150 parts of water, 0.6 part of sodium tripolyphosphate, and 1.2 parts of carboxymethyl cellulose are mixed into the ball mill by weight. Wet ball milling for 72 hours, passing through an 80-mesh sieve, and drying.

[0046] The second step: Press the dried material above into a ceramic green body under 0.01MPa, and burn it in a roller kiln at 1480°C for 0.001 hour.

[0047] The surface of the prepared ceramics is smooth and intact, and the bulk density measured by hydrostatic weighing method is 793kg / m 3 , the water absorption rate is 0.9%, the thermal conductivity measured by the laser flash method is 0.22W / m.k, and the flexural strength is 23.5Mp tested with the digital display ceramic tile flexural testing machine SKZ-500 of Xiangtan Instrument Co., Ltd.

[0048] The prepared ceramics have low water absorption and good antifouling performance. The w...

Embodiment 2

[0050] The first step is to mix 90 parts of cinder, 40 parts of urban sludge, 20 parts of dredging mud and 10 parts of clay into a ball mill in parts by weight, perform dry ball milling for 36 hours, and pass through an 80-mesh sieve.

[0051] In the second step, the above-mentioned dry powder is pressed into a ceramic green body under 50 MPa, and fired in a roller kiln at 1300° C. for 0.1 hour.

[0052] The surface of the prepared ceramics is smooth and intact, and the bulk density measured by the same method is 875kg / m 3 , the water absorption rate is 0.8%, the thermal conductivity is 0.25W / m.k, and the flexural strength is 26.8Mp.

Embodiment 3

[0054] In the first step, 40 parts of municipal sludge, 90 parts of dredging mud, 20 parts of clay, 150 parts of water, 1.0 parts of sodium tripolyphosphate, and 2.4 parts of carboxymethyl cellulose are mixed and added to the ball mill, and wet ball milled After 6 hours, pass through an 80-mesh sieve and dry.

[0055] In the second step, the above-mentioned dry product is pressed into a ceramic green body at 200 MPa, and fired at 1100° C. for 5 hours in a roller kiln.

[0056] The surface of the prepared ceramics is smooth and intact, and the bulk density measured by the same method is 983kg / m 3, the water absorption rate is 0.7%, the thermal conductivity is 0.28W / m.k, and the flexural strength is 28.9Mp.

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Abstract

The invention discloses a preparation method of antifouling heat insulation light ceramics, in particular to a method for preparing environment-friendly light ceramics with low water absorption rate, good antifouling effect and good heat insulation performance by utilizing ceramic waste, coal cinder, sewage sludge, dredging mud and other solid waste; the technology provided by the invention can well solve the pollution problems of industrial production and solid waste in life and can effectively lighten the problem of excessive consumption of the raw material in the ceramic industry; on one hand, the invention opens up a new way for high-efficiency resource recycling of the solid waste, on the other hand, the invention makes a contribution to the novel wall body material and building energy saving; in the technology of the invention, the solid waste utilization rate is high, the process is simple, the operation is convenient and the operation cost is low, and under the condition of not using any additive coating or colored glaze materials, the produced product has the characteristics of low water adsorption rate, good antifouling effect and good heat insulation performance, and the pore size and porosity are easy to control.

Description

technical field [0001] The invention relates to the field of inorganic materials and environmental protection, in particular to a preparation method of anti-fouling and heat-insulating lightweight ceramics. Background technique [0002] In recent years, my country's architectural ceramics industry has developed rapidly, and the output of architectural ceramics has occupied half of the world. Cheap labor costs and resource advantages have continuously improved the competitiveness of Chinese enterprises in the international ceramic market. However, its negative impacts—excessive consumption of resources (raw materials and energy) and environmental pollution are becoming more and more prominent. According to incomplete statistics, my country's building ceramics industry consumes more than 150 million tons of raw materials each year (an average daily consumption of 220,000 tons), and the annual discharge of ceramic waste is expected to exceed 15 million tons. In addition, the a...

Claims

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Application Information

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IPC IPC(8): C04B35/622C04B35/00C04B33/22
Inventor 税安泽郑文奚修安王燕民
Owner SOUTH CHINA UNIV OF TECH
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