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High-temperature fireproof kiln material and preparing method thereof

A high-temperature refractory and kiln furniture technology, applied in the field of refractory materials, can solve problems that affect the service life and quality of kiln furniture, large shrinkage of kiln furniture materials, poor thermal shock resistance, etc., and achieve strong thermal shock resistance and air holes Dense, easily controlled effects

Active Publication Date: 2012-06-13
CHANGSHU INNOVATION CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the 1980s, the rapid sintering technology of ceramics has been promoted at home and abroad, and silicon carbide ceramics has become the first choice for high-temperature kiln furniture for rapid sintering kilns. However, silicon carbide kiln furniture materials have high-temperature oxides, that is, high-temperature oxidation products will undergo volume expansion. , making the structure of kiln furniture loose, resulting in cracks and directly affecting the service life and quality of kiln furniture. At present, this problem has not been well resolved
[0004] Alumina is used as a kiln furniture material due to the limitation of the properties of alumina itself, the kiln furniture material produced has a large shrinkage rate, low density, large pore size and is difficult to control, so the thermal shock resistance is poor, and it is easy to burst when used at high temperature. When the temperature is above 1250 degrees, the high temperature load decreases rapidly with the increase of temperature, and the service life is short

Method used

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  • High-temperature fireproof kiln material and preparing method thereof
  • High-temperature fireproof kiln material and preparing method thereof
  • High-temperature fireproof kiln material and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A high-temperature refractory kiln furniture material, which includes the following components in parts by weight:

[0039]

[0040] Wherein, the secondary calcined porcelain material is prepared by the following method:

[0041] (1) In parts by weight, 93 parts of aluminum oxide, 3 parts of calcium carbonate, 1.5 parts of kaolin, 1.6 parts of silicon micropowder and 0.8 part of chromium oxide are batched and ball milled, mixed and pulverized to 300-400 mesh;

[0042] (2) 13 parts of paraffin, 0.4 part of oleic acid are heated to melting;

[0043] (3) After removing water from the raw materials in step (1), add the melted paraffin wax and oleic acid in step (2), mix them evenly, and mold them by hot die casting at 0.5MP and 60-70°C.

[0044] (4) Discharging wax and firing to get the finished product.

[0045] The preparation method of the above-mentioned warm refractory kiln furniture material comprises the following steps:

[0046] 1. Measure raw materials accord...

Embodiment 2

[0059] A high-temperature refractory kiln furniture material, which includes the following components in parts by weight:

[0060]

[0061] Wherein, the secondary cooked porcelain material is prepared by the following method:

[0062](1) In parts by weight, 90 parts of aluminum oxide, 2 parts of calcium carbonate, 1 part of kaolin, 1.2 parts of silicon micropowder and 0.2 part of chromium oxide are batched and then ball milled, mixed and crushed to 300-400 meshes;

[0063] (2) heating 10 parts of paraffin and 0.2 part of oleic acid to melting;

[0064] (3) After removing water from the raw materials in step (1), add the melted paraffin wax and oleic acid in step (2), mix them evenly, and then use hot die casting to form at 0.5MP and 60-70°C.

[0065] (4) Discharging wax and firing to get the finished product.

[0066] The preparation method of the above-mentioned warm refractory kiln furniture material comprises the following steps:

[0067] 1. Measure raw materials acco...

Embodiment 3

[0080] A high-temperature refractory kiln furniture material, which includes the following components in parts by weight:

[0081]

[0082]

[0083] Wherein, the secondary calcined porcelain material is prepared by the following method:

[0084] (1) In parts by weight, 92 parts of aluminum oxide, 2 parts of calcium carbonate, 1 part of kaolin, 1.2 parts of silicon micropowder and 1.5 parts of chromium oxide are batched and ball milled, mixed and pulverized to 300-400 mesh;

[0085] (2) 12 parts of paraffin and 0.2 part of oleic acid are heated to melt;

[0086] (3) After removing water from the raw materials in step (1), add the melted paraffin wax and oleic acid in step (2), mix them evenly, and then use hot die casting to form at 0.5MP and 60-70°C.

[0087] (4) Discharging wax and firing to get the finished product.

[0088] The preparation method of the above-mentioned warm refractory kiln furniture material comprises the following steps:

[0089] 1. Measure raw ma...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a high-temperature fireproof kiln material, which comprises the following components, by weight, 40 to 80 parts of aluminum oxide, 40 to 60 parts of 80-mesh white corundum, 1 to 10 parts of secondary ripe porcelain, 2 to 8 parts of Suzhou lime sludge, 1 to 4 parts of silicon dioxide, 0.2 to 1.0 part of oleic acid, 3.2 to 7.8 parts of paraffin wax, 1.2 to 2.4 parts of wax and 0.1 to 0.5 part of ammonium polyacrylate. Air holes of the kiln material utilizing the secondary ripe porcelain as raw materials are more compact and higher in density, and the kiln material is much lower in contractibility rate and high in heat and shock resistance stability, is not easy to burst when used at a high temperature, capable of bearing high temperature ranging from 1800 DEG C to 2000 DEG C, long in service life and has excellent performances of high strength, high fire resistance, high wear resistance and the like by the aid of the secondary ripe porcelain which is resistant tohigh temperature and high in wear resistance. Further, the secondary ripe porcelain as waste can be recycled, so that cost is saved, waste can be changed into treasure, and pollution to the environment is reduced. The high-temperature fireproof kiln material is simple in preparing process, easy to control in conditions and can be produced in large scale industrially.

Description

technical field [0001] The invention relates to a refractory material, in particular to a high-temperature refractory kiln furniture material and a preparation method thereof. Background technique [0002] Kiln furniture is a kind of high-grade refractory material, and its quality has a direct impact on the quality and production cost of fired products. The material of kiln furniture should have high refractoriness, good thermal stability, high room temperature and high temperature strength, must withstand the load of its products and kiln furniture itself, good thermal conductivity, low heat storage and oxidation resistance performance. [0003] Since the 1980s, the rapid sintering technology of ceramics has been promoted at home and abroad, and silicon carbide ceramics has become the first choice for high-temperature kiln furniture for rapid sintering kilns. However, silicon carbide kiln furniture materials have high-temperature oxides, that is, high-temperature oxidation...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 龚成张新元张祖洪
Owner CHANGSHU INNOVATION CERAMICS
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