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Backing plate for roller kiln

A roller kiln and backing plate technology, applied in the field of refractory hard materials, can solve the problems of long firing cycle, high firing temperature and low output, and achieve shortened firing cycle, short firing cycle and high firing temperature. low effect

Inactive Publication Date: 2012-10-17
重庆歌德陶瓷玛赛克制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The physical and chemical properties of such backing plates can meet the production needs, but there are defects such as high firing temperature, high energy consumption, long firing cycle and low output.

Method used

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  • Backing plate for roller kiln

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Process formula:

[0030] 20 parts of waste pad powder, 45 parts of alumina powder, 15 parts of calcined talc, 20 parts of clay, 0.4 parts of sodium tripolyphosphate, 0.5 parts of sodium carboxymethyl cellulose, 50 parts of water, ball milled into mud, 250 mesh or more ≤ 1 % fineness, mud moisture 33%-35%; then spray dry to 10% moisture content; become A material for later use;

[0031] 75 parts of waste backing plates below 8 mesh, 25 parts of raw bauxite below 8 mesh, and 10 parts of water are uniformly mixed into material A; that is to say, both materials have reached the fineness of passing through a 8 mesh sieve, the same below.

[0032] Use a one-time molding machine to press and shape, the equipment is set at a pressure of 20MPa, and then dried in a drying kiln until the moisture content is less than 1%;

[0033] The highest firing temperature was set at 1230°C, and the firing cycle was 45 minutes to obtain finished product 1.

Embodiment 2

[0035] 25 parts of waste backing powder, 35 parts of alumina powder, 12 parts of calcined talc, 25 parts of clay, 0.3 parts of sodium tripolyphosphate, 0.5 parts of sodium carboxymethyl cellulose, 50 parts of water, ball milled into mud, more than 250 mesh ≤ 1 % fineness, mud moisture 33%-35%; then spray dry to 11% moisture content; become A material for later use;

[0036] Mix 80 parts of waste pads below 8 mesh, 20 parts of raw bauxite below 8 mesh, and 10 parts of water into material A;

[0037] Use a one-time molding machine to press and shape, and the equipment is set at a pressure of 23MPa; then dry it with a drying kiln until the moisture content is less than 1%;

[0038] Use the roller kiln and other exterior wall brick products adapted to the design parameters to be co-fired in the roller backing kiln without changing the firing system of the existing products. The maximum temperature is set at 1200 ° C, and the firing cycle is 40 minutes. Finished product 2 . The f...

Embodiment 3

[0040] Process formula:

[0041] 22 parts of waste pad powder, 30 parts of alumina powder, 8 parts of calcined talc, 15 parts of clay, 0.4 part of sodium tripolyphosphate, 0.2 part of sodium carboxymethyl cellulose, 45 parts of water, ball milled into mud, more than 250 mesh ≤ 1 % fineness, mud moisture 33%-35%; then spray dry to 9% moisture content; become A material for later use;

[0042] Mix 80 parts of waste pads below 8 mesh, 20 parts of raw bauxite below 8 mesh, and 10 parts of water into material A;

[0043] Use a one-time molding machine to press and shape, and set the pressure of the equipment to 20MPa; then dry it with a drying kiln until the moisture content is less than 1%;

[0044] The highest firing temperature was set at 1200°C, and the firing cycle was 40 minutes to obtain finished product 3.

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Abstract

The invention relates to a backing plate for a roller kiln and also relates to a fireproof hard material. Main points of the technical scheme are as follows: raw materials comprise, by weight, 5-7 parts of a material A and 3-5 parts of a material B; the two materials are mixed, compacted and sintered to obtain the backing plate; the material A is powders and comprises, by weight, 20-30 parts of a high temperature resistant matrix, 30-45 parts of alumina, 5-15 parts of calcine talcum, 15-30 parts of clay, 0.3-0.5 part of sodium tripolyphosphate and 0.2-0.5 part of carboxymethylcellulose sodium; and the material B is granules and comprises, by weight, 75-80 parts of high temperature resistant matrix particles and 20-25 parts of cast bauxitic clay particles. The backing plate provided by the invention has advantages of short sintering period, low temperature and high production efficiency, is an energy-saving environmentally-friendly low-cost high-performance refractory material product, and has wide industrial applications.

Description

technical field [0001] The invention relates to a backing plate for a roller kiln, and also relates to a refractory hard material. Background technique [0002] Roller kiln is mainly used for the production of ceramic building materials such as ceramic tiles. Roller kiln is a continuous firing kiln, using the backing plate on the rotating roller as the green body carrier; specifically, the ceramic products are placed on the backing plate, and the backing plate is placed on many horizontal refractory rollers with close spacing , the ceramic products are transferred from the kiln head to the kiln tail by the rotation of the roller, and are fired at high temperature at the same time. [0003] Therefore, the rollers and backing plates in the roller kiln must be resistant to high temperature and wear. Most of the backing plates used in the existing roller kiln are made of synthetic cordierite which is crushed and sieved into different particle size grades, mixed with clay powde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 易乾亨
Owner 重庆歌德陶瓷玛赛克制造有限公司
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