High-strength steel fibre castable

Abstract

The invention discloses a high-strength steel fibre castable which is prepared by the following raw materials in parts by weight: 2.5 parts of bauxite material with the granularity of 8-5mm, 2.3 parts of bauxite material of which the granularity is more than 0.075mm and is less than 5mm, 2 parts of brown aluminium oxide particle material with the granularity of 3-1mm, 0.8 part of bauxite material of which the granularity is less than or equal to 0.075 mm, 0.4 part of alumina submicron powder of which the granularity is less than or equal to 0.025 mm, 0.6 part of carborundum powder of which the granularity is less than or equal to 0.075 mm, 0.3 part of silica micropowder of which the granularity is less than 0.019 mm, 0.6 part of CA-70 cement, 0.5 part of brown aluminium oxide powder of which the granularity is less than 0.053 mm, 0.2 part of No. 446 heat-resistant steel fiber, 0.02 part of anti-explosion steel fiber, sodium tripolyphosphate accounting for 0.1% of total material weight and sodium hexametaphosphate accounting for 0.08% of total material weight. The product has high compression strength, high breaking strength, high refractoriness under load and favorable thermal shock resistance stability, has the characteristic of microdilatancy at high temperature and has the advantages of favorable wear-resisting property and the like.

Description

technical field [0001] The invention relates to castables for cement kilns, in particular to a high-strength steel fiber castable with low cost and can replace corundum. Background technique [0002] In cement kiln kilns, preheaters, grate coolers and other kilns, corundum-based high-strength castables are traditionally used. Due to the high cost of corundum materials, the cost of raw materials for enterprises is high. Contents of the invention [0003] The object of the present invention is to provide a low-cost high-strength steel fiber castable that can replace the corundum castable. [0004] To achieve the above object, the present invention can take the following technical solutions: [0005] The high-strength steel fiber castable according to the present invention is made of raw materials bauxite, brown corundum, alumina micropowder, silicon carbide, silicon micropowder, CA-70 cement, No. 446 heat-resistant steel fiber, explosion-proof steel fiber and three Sodium ...

AI Technical Summary

Problems solved by technology

[0002] In cement kiln kilns, preheaters, grate coolers and other kilns, corundum high-strength castables are traditionally used. Due to the high cost of corundum materials, the cost of raw materials for enterprises is high.

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