Refractory castable for incinerator

A technology of refractory castables and incinerators, applied in the field of refractory materials, can solve the problems of hexavalent chromium pollution, national environmental protection requirements, non-compliance, and poor toughness of materials, so as to facilitate kiln operation, improve service life, and kiln heat storage. Effect

Active Publication Date: 2014-01-29
NINGXIA TIANZONG HONGGUANG COGENERATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional chromium-containing refractory materials are widely used in waste incinerator linings due to their excellent slag resistance, but their high density and strength lead to poor toughness of the material, and hexavalent chromium pollution does not meet the national environmental protection requirements, so chromium refractories will gradually be replaced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A refractory pouring material for an incinerator, comprising silicon carbide particles and fine powder, corundum particles and fine powder, aluminate cement, silicon micropowder, silicon nitride, boron carbide, magnesium-containing materials, alumina micropowder and organic fibers. Among them, the weight percentage of the above raw materials is: silicon carbide particles and fine powder 41%, corundum particles and fine powder 10%, aluminate cement 5%, silicon micropowder 4%, silicon nitride 5%, boron carbide 5%, Magnesium-containing material 20%, alumina micropowder 9.9% and organic fiber 0.1%. The silicon carbide particles and fine powder are composed of 8mm silicon carbide particles 10-20%, 4-3mm silicon carbide particles 15-20%, 3-1mm silicon carbide particles 10-20%, 1-0mm silicon carbide particles 15-25% and silicon carbide fine powder 15~25%, wherein the particle size of silicon carbide fine powder is 120 mesh, 180 mesh, 200 mesh, 320 mesh, 325 mesh mixed in any p...

Embodiment 2

[0017] A refractory pouring material for an incinerator, comprising silicon carbide particles and fine powder, corundum particles and fine powder, aluminate cement, silicon micropowder, silicon nitride, boron carbide, magnesium-containing materials, alumina micropowder and organic fibers. Wherein, the weight percent of each of the above-mentioned raw materials is: silicon carbide particles and fine powder 40%, corundum particles and fine powder 10%, aluminate cement 5%, silicon micropowder 4%, silicon nitride 5%, boron carbide 5%, Magnesium-containing material 20%, alumina micropowder 9.9% and organic fiber 0.1%. Silicon carbide particles and fine powder 50%, corundum particles and fine powder 8%, aluminate cement 7%, silicon fine powder 2%, silicon nitride 3%, boron carbide 1%, magnesium-containing materials 19%, alumina fine powder 9.8 % and organic fiber 0.2%. The silicon carbide particles and fine powder are composed of 8mm silicon carbide particles 10-20%, 4-3mm silicon ...

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PUM

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Abstract

The invention discloses a refractory castable for an incinerator, which comprises the following raw materials in percentage by weight: 40-50% of silicon carbide particles and fine powder, 5-10% of corundum particles and fine powder, 3-7% of aluminate cement, 2-4% of silicon micro powder, 1-5% of silicon nitride, 1-5% of boron carbide, 15-20% of magnesium-containing material, 5-10% of alumina micro powder and 0.1-0.2% of organic fiber. The refractory castable disclosed by the invention has the beneficial effects of high strength and good abrasion resistance, good volume stability and acid-base resistance, good thermal shock stability and good erosion resistance.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a refractory castable for an incinerator. Background technique [0002] Compared with qualitative refractory products, unshaped refractory materials represented by refractory castables have the advantages of short process flow, low production energy consumption and cost, convenient use, wide application range, integrity and good use effect, so they are widely used in the world. It has developed rapidly, and its proportion in the whole refractory material is getting higher and higher. [0003] With the continuous increase of the world's population and rapid economic development, the amount of urban garbage and industrial waste has increased dramatically, causing serious harm to the environment in which human beings live. Therefore, the disposal of garbage is an urgent problem to be solved. The traditional method of burying garbage not only takes up space...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 穆祥王西来董伟胜刘文艳解仁刘朝晖苏新国王淑娟
Owner NINGXIA TIANZONG HONGGUANG COGENERATION TECH
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