A kind of low-carbon aluminum-magnesium spinel carbon brick with high thermal shock resistance and preparation method thereof

Abstract

The invention relates to a low-carbon aluminum-magnesium spinel carbon brick with high thermal shock resistance and a preparation method thereof; comprising 1-90 parts of corundum spinel carbon regenerated material, 1-50 parts of corundum particles, and 1-50 parts of fused magnesia 40 parts, 1-40 parts of corundum dust removal powder, 1-8 parts of activated α-alumina fine powder, 1-10 parts of spinel-calcium aluminate composite material, 0.1-3 parts of metal aluminum powder, and 0.1-3 parts of nano-carbon black 5 parts, 1-8 parts of bonding agent; The object of the present invention is to provide a kind of novel high thermal shock resistance low-carbon aluminum-magnesium spinel carbon brick, through the high thermal shock resistance low-carbon aluminum-magnesium spinel carbon brick It is designed to solve the problems existing in the prior art, such as tabular alumina, white corundum, fused magnesia, flake graphite, spinel micropowder, alumina micropowder, silicon carbide fine powder, etc. Obtain, cause great pollution to the environment, and the technical problem that raw material cost is high.

Description

technical field [0001] The invention relates to the field of refractory technology, in particular to a novel low-carbon aluminum-magnesium spinel carbon brick with high thermal shock resistance and a preparation method thereof. Background technique [0002] With the rapid development of steelmaking technology, with the increase in the proportion of low-carbon steel, ultra-low carbon steel and other steel types, the requirements for low-carbon and non-carbonized refractory materials for steelmaking are also getting higher and higher. In the steelmaking industry, the ladle is used as a container for water, and at the same time undertakes the refining process of molten steel and other processes, and the use conditions are harsh. In particular, the ladle bottom of large ladles is not only subject to repeated severe impacts of high-temperature molten steel, but also the stirring of the refining process and the erosion of molten slag. This requires that the ladle bottom refractory...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a new type of high thermal shock resistance low carbon aluminum magnesium spinel carbon brick, through the design of high thermal shock resistance low carbon aluminum magnesium spinel carbon brick to solve the problems existing in the prior art Tabular alumina, white corundum, fused magnesia, flake graphite, spinel micropowder, alumina micropowder, silicon carbide fine powder and other materials are used as raw materials to prepare ladle bricks to improve their thermal shock stability. , white corundum, fused magnesia and other raw materials need to be fired at high temperature, causing great pollution to the environment, and the technical problem of high raw material cost

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