High-temperature sillimanite brick and production method thereof

A silicon wire and high temperature technology, which is applied in the field of high temperature sillimanite bricks and its production, can solve the problems of cracking and peeling of sillimanite bricks, shortening the service life of high temperature furnaces and high temperature hot blast stoves, shortening the service life of sillimanite bricks, etc. High load softening temperature, elimination of cracks and spalling, and good thermal shock stability

Active Publication Date: 2017-08-08
辉县市东方耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because traditional sillimanite bricks contain certain clay and inorganic binders, it is easy to cause cracks and peeling of sillimanite bricks during high temperature and cooling process, which shortens the service life of sillimanite bricks in use, and then shortens the high temperature melting process. Service life of kiln and high temperature hot blast furnace

Method used

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  • High-temperature sillimanite brick and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: a high temperature sillimanite brick, containing the following raw materials in parts by weight, 5 parts of andalusite, 10 parts of zircon, 10 parts of mullite, 20 parts of pickled sillimanite, alumina 10 parts of powder, 10 parts of combined clay; among which: the mass ratio of mullite particles and fine powder is 3:7.

[0026] The andalusite is high-purity andalusite powder with a particle size of less than 200 meshes, the zircon is zircon powder with a particle size of less than 350 meshes, the particle size of the mullite particles is between 10 and 20 meshes, and the mullite fine The particle size of the powder is between 300 and 350 meshes, the acid-washed sillimanite is high-purity acid-washed sillimanite powder with a particle size of less than 200 meshes, and the alumina powder is a high-purity alumina micropowder with a particle size of less than 625 meshes. The clay is a bound clay with a particle size of less than 200 mesh.

[0027] The acid-w...

Embodiment 2

[0034] Embodiment 2: the production methods of this embodiment and embodiment 1 are exactly the same, the similarities will not be repeated, the difference is: a high-temperature sillimanite brick, containing the following raw materials in parts by weight, andalusite 10 parts, 25 parts of zircon, 25 parts of mullite, 35 parts of pickled sillimanite, 25 parts of alumina powder, 25 parts of bound clay; among which: the mass ratio of mullite particles and fine powder is 3 :7 .

Embodiment 3

[0035] Embodiment 3: The production methods of this embodiment and embodiment 1 are exactly the same, and the similarities are not repeated, the difference is: a high-temperature sillimanite brick, containing the following raw materials in parts by weight, andalusite 8 parts, 20 parts of zircon, 20 parts of mullite, 30 parts of pickled sillimanite, 20 parts of alumina powder, 20 parts of bound clay; among which: the mass ratio of mullite particles and fine powder is 3 :7 .

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Abstract

The invention discloses a high-temperature sillimanite brick which is prepared from the following raw materials in parts by weight: 5 to 10 parts of andalusite, 10 to 25 parts of zirconite, 10 to 25 parts of mullite, 20 to 35 parts of acid-pickled sillimanite, 10 to 25 parts of alumina powder and 10 to 25 parts of binding clay, wherein mass ratio of a particle material to a fine powder material of the mullite is 3 to 7. A production method of the high-temperature sillimanite brick comprises the technological steps of mixing and grinding raw materials, ageing materials and regrinding materials, compression moulding, sintering to obtain a finished product and the like. After compression moulding, a green brick is sintered in a high-temperature tunnel kiln in temperature of 1450 to 1500 DEG C under thermal insulation for 10 to 12 hours, a green brick finished product is taken out of the kiln after being naturally cooled for 48 to 52 hours, and the high-temperature sillimanite brick can be obtained. According to the high-temperature sillimanite brick disclosed by the invention, ingredients of the zirconite, the andalusite , the mullite and the like are added into the acid-pickled sillimanite, so that the service life of the high-temperature sillimanite brick in a high-temperature melting furnace is prolonged, and the phenomena that the high-temperature sillimanite brick cracks and peels off in a using process are avoided.

Description

[0001] Technical field: [0002] The invention relates to a high-temperature sillimanite brick and a production method thereof, belonging to the technical field of refractory materials. [0003] Background technique: [0004] Sillimanite bricks are often used on the lining of high temperature melting furnaces and high temperature hot blast furnaces. Because traditional sillimanite bricks contain certain clay and inorganic binders, it is easy to cause cracks and spalling of sillimanite bricks in the process of high temperature and cooling, shortening the life of sillimanite bricks in use, and thus shortening the high temperature melting process. The service life of kiln and high temperature hot blast stove. [0005] Invention content: [0006] The technical problem to be solved by the present invention is to provide a high-temperature sillimanite brick and a production method thereof. service life. [0007] The technical scheme adopted by the present invention for solving th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66F27D1/04
CPCC04B35/66C04B2235/3217C04B2235/3248C04B2235/3463C04B2235/349C04B2235/5427C04B2235/5436C04B2235/602C04B2235/606C04B2235/656C04B2235/6567C04B2235/77C04B2235/96F27D1/04
Inventor 马金奎王玉付马金龙
Owner 辉县市东方耐火材料有限公司
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