Alumina-carbon drain hole brick toughened with homogenizing material and production method thereof

Abstract

The invention discloses an alumina-carbon drain hole brick toughened with a homogenizing material and a production method thereof. The alumina-carbon drain hole brick is prepared from, by weight, 20-30% of 88 bauxite homogenizing material, 38-48% of tabular corundum, 8-12% of electrically fused white corundum, 1-2% of 298 flake graphite, 6-8% of aluminum silicon alloy powder, 6-9% of active a-aluminum oxide powder and 4-6% of Guangxi white mud, and the total quantity of the above raw materials is 100%; phenolic resin binder accounting for 3-4% of the total weight of the above raw materials is extra added. According to the alumina-carbon drain hole brick toughened with the homogenizing material and the production method, part of the tabular corundum is replaced with the 88 bauxite homogenizing material, so that the thermal shock stability of the product is improved, the phenomenon that cracks of the drain hole brick occur is prevented and inhibited, meanwhile the cost is reduced, and the utilization rate of resources is improved. The drain hole brick has the same advantages of high strength, high corrosion resistance and the like as a normal drain hole brick, particularly has good thermal shock stability, occurrence of cracks of the drain hole brick after repeated use can be reduced, and the service life is prolonged.

Description

technical field [0001] The invention relates to an aluminum-carbon drain brick, in particular to an aluminum-carbon drain brick toughened by a homogenized material and a production method thereof. Background technique [0002] The drain brick works intermittently during use, and it is prone to cracks due to thermal shock. When it is used for many times, the crack will expand, and steel leakage accidents will occur, causing safety hazards; sometimes the slide plate is replaced in advance due to the drain brick, resulting in waste of materials , increasing the cost of steelmaking. [0003] At present, the drain bricks used many times are mainly made of aluminum carbon, and the main raw materials are corundum and graphite. Corundum has good corrosion resistance, but because of its large expansion coefficient, it affects the thermal shock resistance of the drain. Therefore, in order to improve the thermal shock resistance of the drain brick, it is necessary to use low-expansion...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a new aluminum-carbon drain brick toughened by homogenized material and its technical problem of cracks easily appearing when the drain brick is used for many times, which affects the service life and increases material consumption. The production method can improve the thermal shock resistance of the drain brick and effectively solve the problem of cracks in the drain brick after repeated use

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