Branch ditch castable for blast furnace casting house containing homogeneous material and preparation method thereof

Abstract

The invention discloses a homogenized material-containing blast furnace tapping yard branch channel castable and a preparation method thereof, and belongs to the technical field of blast furnace smelting high temperature refractory materials. The castable comprises the following raw materials, 20-25wt% of a homogenized material with the particle size of greater than 5mm and not greater than 8mm, 10-20wt% of a homogenized material with the particle size of greater than 3mm and not greater than 5mm, 5-15wt% of a homogenized material with the particle size of greater than 1mm and not greater than 3mm, 10-15wt% of a homogenized material with the particle size of greater than 0.088mm and not greater than 1mm, 5-15wt% of homogenized material fine powder with the particle size of not greater than 0.088mm, 10-15wt% of 90 silicon carbide, 2-5wt% of pure calcium aluminate cement, 0-10wt% of alumina micro-powder, 1-5wt% of silicon micro-powder, 1-3wt% of a composite carbon material and 1-3wt% of an antioxidant, and also comprises 0.2-0.3wt% of an additive. The castable has the advantages of good construction performance, good erosion resistance, prolonged service life and cost reduction.

Description

technical field [0001] The invention belongs to the technical field of blast furnace smelting high-temperature refractory materials, and in particular relates to a branch ditch castable for a blast furnace casting house containing homogeneous materials and a preparation method thereof. In particular, it relates to a homogeneous material-silicon carbide-carbon refractory castable technology and a preparation method thereof for a blast furnace iron channel. Background technique [0002] At present, the refractory materials of the blast furnace ironmaking system are mainly alumina, aluminum silicon carbide (carbon) refractory materials, mainly high alumina bauxite and alumina powder as the main raw materials, which are prepared by sintering or melting. White corundum, fused brown corundum, and sintered tabular corundum are the main products, and the demand for alumina and aluminum silicon carbide (carbon) refractory materials accounts for a large proportion of the total refract...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a branch ditch castable containing homogeneous material for blast furnace casting house and its preparation method, which solves the problem of quality fluctuation of sintered bauxite and improves the service life of the site

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