Sintered high thermal shock resistance bauxite brick, and production method thereof

A production process and technology of bauxite, which is applied in the field of firing high thermal shock bauxite bricks and its production process, can solve the problems affecting the thermal shock resistance of high alumina bricks, achieve the improvement of slag erosion resistance, production The effect of simple process and low cost

Inactive Publication Date: 2018-09-14
郑州凯翔耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a fired bauxite brick with high thermal shock resistance to solve the problem that the vitreous components contained in the above-mentioned bauxite tend to form ternary and quaternary eutectics with low melting points when the temperature rises, which will affect high The problem of thermal shock resistance of aluminum bricks

Method used

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  • Sintered high thermal shock resistance bauxite brick, and production method thereof
  • Sintered high thermal shock resistance bauxite brick, and production method thereof
  • Sintered high thermal shock resistance bauxite brick, and production method thereof

Examples

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Effect test

Embodiment 1

[0033] A fired high thermal shock resistant bauxite brick, characterized in that: the fired high thermal shock resistant bauxite brick includes the following components in parts by weight: 52 parts of high alumina bauxite mixture, silicon 15 parts of cordite powder, 8 parts of cordierite powder, 3 parts of alumina powder, 10 parts of Guangxi white clay, 1 part of zircon powder, and 1 part of silicon carbide fine powder.

[0034] Its preparation method comprises the following steps:

[0035] (1) Mixing and stirring: add high-alumina bauxite mixture, water, sillimanite powder, cordierite powder, alumina powder, zirconite powder and silicon carbide fine powder in sequence according to the proportion, mix and stir for 10 minutes, and then add Guangxi White clay, mixed and stirred for 10 minutes, obtained the initial product;

[0036] (2) Squeeze and fire: put the initial product into a 400-ton press, press and form it, and then fire it in a kiln to obtain a semi-finished product;...

Embodiment 2

[0039] A fired high thermal shock resistant bauxite brick, characterized in that: the fired high thermal shock resistant bauxite brick includes the following components in parts by weight: 55 parts of high alumina bauxite mixture, silicon 17 parts of wire stone powder, 10 parts of cordierite powder, 5 parts of alumina powder, 13 parts of Guangxi white clay, 2 parts of zircon stone powder, and 3 parts of silicon carbide fine powder.

[0040] Its preparation method comprises the following steps:

[0041] (1) Mixing and stirring: add high-alumina bauxite mixture, water, sillimanite powder, cordierite powder, alumina powder, zirconite powder and silicon carbide fine powder in sequence according to the proportion, mix and stir for 10 minutes, and then add Guangxi White clay, mixed and stirred for 10 minutes, obtained the initial product;

[0042] (2) Squeeze and fire: put the initial product into a 400-ton press, press and form it, and then fire it in a kiln to obtain a semi-finis...

Embodiment 3

[0045] A fired high thermal shock resistant bauxite brick, characterized in that: the fired high thermal shock resistant bauxite brick includes the following components in parts by weight: 58 parts of high alumina bauxite mixture, silicon 20 parts of wire stone powder, 12 parts of cordierite powder, 8 parts of alumina powder, 15 parts of Guangxi white clay, 5 parts of zircon stone powder, and 5 parts of silicon carbide fine powder.

[0046] Its preparation method comprises the following steps:

[0047](1) Mixing and stirring: add high-alumina bauxite mixture, water, sillimanite powder, cordierite powder, alumina powder, zirconite powder and silicon carbide fine powder in sequence according to the proportion, mix and stir for 10 minutes, and then add Guangxi White clay, mixed and stirred for 10 minutes, obtained the initial product;

[0048] (2) Squeeze and fire: put the initial product into a 400-ton press, press and form it, and then fire it in a kiln to obtain a semi-finish...

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Abstract

The invention provides a sintered high thermal shock resistance bauxite brick, and a production method thereof, and belongs to the field of industrial kiln material. The sintered high thermal shock resistance bauxite brick comprises, by weight, 52 to 58 parts of high aluminium bauxite mixture, 15 to 20 parts of sillimanite powder, 8 to 12 parts of cordierite powder, 3 to 8 parts of aluminium oxidepowder, 10 to 15 parts of Guangxi white clay, 1 to 5 parts of zirconite powder, and 1 to 5 parts of silicon carbide fine powder. The production method comprises following steps: 1, mixing and stirring; 2, pressing and sintering; and 3, thermal insulation treatment. The production method is capable of improving the thermal shock resistance of the sintered high thermal shock resistance bauxite brick.

Description

technical field [0001] The invention relates to the field of industrial kiln materials, in particular to a fired bauxite brick with high thermal shock resistance and a production process thereof. Background technique [0002] High alumina brick is a kind of refractory material, the main component of this refractory brick is Al 2 o 3 . A neutral refractory material with an alumina content above 48%. It is formed and calcined from bauxite or other raw materials with high alumina content. High thermal stability, refractoriness above 1770°C. It has good slag resistance and is used for the lining of masonry steelmaking electric furnaces, glass melting furnaces, and cement rotary furnaces. [0003] At present, the existing high alumina bricks are usually aluminum oxide (Al 2 o 3 ) content, that is, aluminum silicate refractory products with an aluminum content of 48%. However, the main raw material of existing high-alumina bricks is bauxite, and the vitreous components con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/66
CPCC04B35/10C04B35/66C04B2235/3244C04B2235/3463C04B2235/3481C04B2235/349C04B2235/3826
Inventor 刘辉凯
Owner 郑州凯翔耐火材料有限公司
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