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Low-creep high-alumina brick and preparation method thereof

A creep high-alumina brick and high-alumina technology is applied in the field of low-creep high-alumina bricks and their preparation, which can solve problems such as performance improvement of high-alumina bricks, and achieve the effects of low cost, simple preparation method and convenient mass production.

Pending Publication Date: 2021-03-09
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

Insufficient supply and grade of existing raw materials lead to the performance of traditional high-alumina bricks still to be improved

Method used

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  • Low-creep high-alumina brick and preparation method thereof

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Effect test

Embodiment 1

[0022] A low-creep high-alumina brick, comprising the following raw materials in proportions by weight: 52 parts of high-alumina material, 14 parts of high-alumina powder, 10 parts of alumina powder, 7 parts of sillimanite powder, 7 parts of andalusite powder, Guangxi 10 parts of white mud.

[0023] Mix high alumina material, high alumina powder, alumina powder, sillimanite powder and andalusite powder according to the ratio and stir evenly, then add an appropriate amount of water and stir for ten minutes, then add Guangxi white mud and mix for ten minutes; then add Guangxi white clay After the mud was mixed and stirred for ten minutes, the mixed mud was obtained. The finished product can be obtained by pressing the mixed mud into shape, drying and sintering. Preferably, after the mixed mud is pressed into shape, it is first dried at 130 degrees Celsius for eight hours, and then fired at a high temperature of 1430-1470 degrees Celsius for 12 hours to obtain a finished high-al...

Embodiment 2

[0026] A low-creep high-alumina brick, comprising the following raw materials in proportions by weight: 55 parts of high-alumina material, 14 parts of high-alumina powder, 10 parts of alumina powder, 7 parts of sillimanite powder, 7 parts of andalusite powder, Guangxi 7 parts of white mud.

[0027] Mix high alumina material, high alumina powder, alumina powder, sillimanite powder and andalusite powder according to the ratio and stir evenly, then add an appropriate amount of water and stir for ten minutes, then add Guangxi white mud and mix for ten minutes; then add Guangxi white clay After the mud was mixed and stirred for ten minutes, the mixed mud was obtained. The finished product can be obtained by pressing the mixed mud into shape, drying and sintering. Preferably, after the mixed mud is pressed into shape, it is first dried at 130 degrees Celsius for eight hours, and then fired at a high temperature of 1430-1470 degrees Celsius for 12 hours to obtain a finished high-alu...

Embodiment 3

[0030] A low-creep high-alumina brick comprises the following raw materials in proportion by weight: 52 parts of high-alumina material, 14 parts of high-alumina powder, 10 parts of alumina powder, 14 parts of andalusite powder, and 10 parts of Guangxi white clay.

[0031] Mix high-alumina material, high-alumina powder, alumina powder and andalusite powder according to the ratio and stir evenly, then add an appropriate amount of water and stir for ten minutes, then add Guangxi white mud and mix for ten minutes; then add Guangxi white mud and mix for ten minutes After 10 minutes, the mixed mud was obtained. The finished product can be obtained by pressing the mixed mud into shape, drying and sintering. Preferably, after the mixed mud is pressed into shape, it is first dried at 130 degrees Celsius for eight hours, and then fired at a high temperature of 1430-1470 degrees Celsius for 12 hours to obtain a finished high-alumina brick.

[0032] The high alumina brick prepared in thi...

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Abstract

The invention relates to a low-creep high-alumina brick and a preparation method thereof. The low-creep high-alumina brick comprises the following raw materials in parts by weight: 50-60 parts of high-alumina material, 5-20 parts of high-alumina powder, 5-20 parts of alumina powder, 0-20 parts of sillimanite powder, 5-20 parts of andalusite powder and 5-15 parts of Guangxi white mud. The method comprises: mixing and uniformly stirring the high-aluminum material, the high-aluminum powder, the aluminum oxide powder, the sillimanite powder and the andalusite powder in proportion, adding a properamount of water, stirring for 10 minutes, adding the Guangxi white mud, and mixing and stirring for 10 minutes, and after the mixed pug is pressed and formed, drying and sintering to obtain a finishedproduct. The low-creep high-alumina brick has the advantages of high compressive strength and low creep, and the preparation method is simple, low in cost and convenient for batch production.

Description

technical field [0001] The invention relates to the technical field of high-alumina bricks, in particular to a low-creep high-alumina brick and a preparation method thereof. Background technique [0002] High alumina brick is a kind of refractory material, and the main component of this refractory material brick is Al2O3. It is mainly used for masonry lining of blast furnaces, hot blast stoves, electric furnace roofs, blast furnaces, reverberatory furnaces, and rotary kilns. In addition, high alumina bricks are also widely used as open-hearth regenerative checker bricks, plugs for pouring systems, nozzle bricks, etc. High alumina bricks need to have a certain compressive strength and low creep to prevent overall settlement in the furnace during use. Insufficient supply and grade of existing raw materials lead to the performance of the current traditional high-alumina bricks still need to be improved. Contents of the invention [0003] The purpose of the present inventio...

Claims

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Application Information

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IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/3217C04B2235/3481C04B2235/349C04B2235/6567C04B2235/77C04B2235/96C04B2235/9607C04B2235/9615
Inventor 刘辉凯周志洋刘儒航
Owner 郑州凯翔耐火材料有限公司
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