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High-strength castable

A castable and high-strength technology, applied in the field of high-strength castables, can solve the problems of increased production costs, high raw material costs, and high corundum material costs for manufacturers, and achieves high softening temperature under load, good thermal shock resistance, The effect of high flexural strength

Active Publication Date: 2012-01-04
郑州真金耐火材料有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In cement kiln kilns, preheaters, grate coolers and other kilns that require high strength and poor service conditions, high-strength corundum castables are often used. Due to the high cost of corundum materials, the cost of raw materials is high, so that Manufacturers increase production costs

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  • High-strength castable

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Embodiment Construction

[0015] The high-strength castable according to the present invention is composed of raw materials bauxite, brown corundum, silicon carbide, silicon micropowder, CA-70 cement, alumina powder, sodium tripolyphosphate, and sodium hexametaphosphate according to the following parts by weight Formulated with:

[0016] 2.5 parts of bauxite materials with a particle size of 8-5mm, 2.3 parts of bauxite materials with a particle size of 0.075mm<5mm; 2 parts of brown corundum particles with a particle size of 3-1mm; 0.4 parts of alumina superfine powder with a particle size of 0.025 mm; 0.6 parts of silicon carbide powder with a particle size of ≤0.075 mm; 0.3 parts of silicon powder with a particle size of <0.019 mm; 0.6 parts of CA-70 cement; 0.5 parts of brown corundum powder with a particle size of <0.053 mm; Sodium tripolyphosphate of 0.1% of the total material weight; sodium hexametaphosphate of 0.08% of the total material weight; use a jaw crusher or a cone crusher to crush the ma...

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Abstract

The invention discloses a high-strength castable, which is prepared from the following raw materials in part by weight: 4.8 parts of bauxite aggregate, 2 parts of brown aluminium oxide granules, 0.8 part of bauxite powder, 0.4 part of alumina super-micro powder, 0.6 part of silicon carbide powder, 0.3 part of silicon micro powder, 0.6 part of CA-70 cement, 0.5 part of brown aluminium oxide powder, sodium tripolyphosphate accounting for 0.1 percent of weight of the total material, and sodium hexametaphosphate accounting for 0.08 percent of the weight of the total material. The castable has theadvantages of high compression strength, high breaking strength, high load softening temperature, good thermal shock resistant stability, micro-expansion property at high temperature, good abrasion resistance and the like; the cost is reduced by about two fifth compared with that of the conventional high-strength castable; and the castable can be widely applied to kilns of cement kiln eyes, pre-heaters, grate coolers and the like with high strength requirement and severe using conditions, and is an ideal new product for replacing a high-strength corundum castable.

Description

technical field [0001] The invention relates to castables for cement kilns, in particular to a high-strength castable with low cost and long service life. Background technique [0002] In cement kiln kilns, preheaters, grate coolers and other kilns that require high strength and poor service conditions, high-strength corundum castables are often used. Due to the high cost of corundum materials, the cost of raw materials is high, so that Manufacturers increase production costs. Contents of the invention [0003] The object of the present invention is to provide a high-strength castable with low cost and long service life. [0004] To achieve the above object, the present invention can take the following technical solutions: [0005] The high-strength castable according to the present invention is composed of raw materials bauxite, brown corundum, silicon carbide, silicon micropowder, CA-70 cement, alumina powder, sodium tripolyphosphate, and sodium hexametaphosphate accor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 宋金标宋禄峰宋彩红宋马峰樊建令卢中立郭英超付鸿正樊召峰孙艳秋
Owner 郑州真金耐火材料有限责任公司
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