Alumina-spinel-carbon brick containing aluminachrome slag and preparation method of alumina-spinel-carbon brick

A technology of aluminum spinel carbon brick and aluminum chromium slag, which is applied in the field of refractory materials, can solve the problems of unseen products, achieve excellent slag erosion resistance, improve density and slag resistance, enhance erosion resistance and Effect of slag resistance

Active Publication Date: 2015-04-08
北京利尔高温材料股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Zheng Lijun of Liaoning University of Science and Technology studied the effect of magnesia-aluminum-spinel on magnesia-aluminum-chrome refractory materials. The results showed that magnesia-aluminum spinel with a particle size of 3 mm to 2 mm can improve the thermal shock performance of magnesia-aluminum-chrome materials, but there is no relevant research so far. The product

Method used

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  • Alumina-spinel-carbon brick containing aluminachrome slag and preparation method of alumina-spinel-carbon brick
  • Alumina-spinel-carbon brick containing aluminachrome slag and preparation method of alumina-spinel-carbon brick
  • Alumina-spinel-carbon brick containing aluminachrome slag and preparation method of alumina-spinel-carbon brick

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Embodiment 1-3

[0030] The batching that embodiment 1-3 adopts and the number of parts are as shown in the following table:

[0031]

[0032]

Embodiment 4-6

[0034] The batching that embodiment 4-6 adopts and the number of parts are as shown in the following table:

[0035]

[0036]

Embodiment 7

[0038] The present embodiment is the preparation method of the aluminum spinel carbon brick containing aluminum chromium slag, specifically comprises the following steps:

[0039] (1) Co-grind brown corundum fine powder, aluminum chromium slag fine powder, fused magnesia fine powder and metal aluminum powder according to the proportioning amount, and mix them uniformly to make co-milling powder;

[0040] (2) Dry mix brown corundum particles and aluminum chrome slag particles for 3 minutes according to the proportion, then slowly add binder (phenolic resin) and graphite within 2 minutes, and finally add the co-milled powder obtained in step (1) and mix For 30 minutes, the discharge temperature is 50-60°C, and the semi-finished product is formed on a 630-ton brick press. The forming operation must follow the principle of cutting materials at four corners, light first and then heavy. Then heat treatment for more than 24 hours, wherein the temperature at the entrance of the kiln s...

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Abstract

The invention relates to a refractory matter, and particularly relates to an alumina-spinel-carbon brick containing aluminachrome slag and a preparation method of thee alumina-spinel-carbon brick. The alumina-spinel-carbon brick is prepared from the following raw materials in parts by weight: 50-65 parts of brown fused alumina particles with the particle sizes of smaller than or equal to 5mm, 5-20 parts of aluminachrome slag particles with the particle sizes of smaller than or equal to 3mm, 5-15 parts of 180-220meshbrown aluminum oxide powder, 5-10 parts of 180-220mesh aluminachrome slag powder, 6-15 parts of 180-220mesh fused magnesite powder, 0.3-1.0 part of 300-340mesh metal aluminum powder, 6-12 parts of graphite and 2-4 parts of a binding agent. The alumina-spinel-carbon brick provided by the invention is high in strength, stable in chemical property, and excellent in slag corrosion resistance; and the aluminachrome slag component is added, and reacts with magnesia powder at a high temperature, so as to form a spinel structure, so that the anti-erosion properties and slag resistance of the alumina-spinel-carbon brick are enhanced.

Description

technical field [0001] The invention relates to a refractory material, in particular to an aluminum spinel carbon brick containing aluminum chromium slag and a preparation method thereof. Background technique [0002] Magnesium-aluminum spinel and magnesium-chromium spinel have high melting point, excellent chemical and thermal stability, and strong resistance to alkaline slag. They are high-quality materials for making advanced refractory materials. However, the amount of natural magnesia-alumina spinel is small, and most magnesia-alumina spinel and magnesia-chrome spinel on the market can only be artificially synthesized at present, and their preparation requires high-purity industrial alumina, high-grade active magnesia and chromite As a raw material, solid-phase firing is adopted at a very high temperature, and the process conditions are very harsh. [0003] Aluminum-chromium slag is an industrial by-product of the aluminothermic smelting of metal chromium. Its main com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 盛海洋刘靖轩赵伟王伟伟王次明任林胡玲军曹仁锋赵传亮王建新黄健孙启茗万小宝王恒
Owner 北京利尔高温材料股份有限公司
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