Filling permanent lining furnace fireproofing material

Abstract

The invention relates to a filling permanent lining furnace fireproofing material, which is prepared by uniformly mixing composite brown corundum, silicon nitride powders, compound vitrified bond powders, magnesia powder, metal aluminite powders, alumina micro powders, tabular corundum powders and composite additives micro powders. The invention has the advantages of better heat preservation effects, stronger stability, longer service life, simple construction process and high efficiency and is beneficial to save resources and labor power.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a filled refractory material used for permanent lining of tanks containing high-temperature liquids such as molten iron tanks and ladles. Background technique [0002] Hot metal tanks or ladles are special containers for high-temperature liquid metal in iron and steel metallurgical enterprises. The inner refractory lining is composed of a permanent lining and a working layer. The permanent lining is close to the outer wall of the metal, and the working layer is in direct contact with liquid iron or steel. Floor. [0003] At present, the permanent lining of molten iron tanks or ladles in the metallurgical industry is made of refractory casting. The entire furnace building process is complicated, which wastes energy and prolongs the furnace building period. Moreover, the binder used for pouring refractory materials is cement, etc., so in A certain amount of water must be added ...

AI Technical Summary

Problems solved by technology

[0003] At present, the permanent lining of molten iron tanks or ladles in the metallurgical industry is made of refractory casting. The entire furnace building process is complicated, which wastes energy and prolongs the furnace building period. Moreover, the binder used for pouring refractory materials is cement, etc., so in A certain amount of water must be added during construction, and the castable will form pores of different sizes during the drainage process at high temperature, which makes the insulation effect of the permanent lining unsatisfactory, and it is easy to crack during use, and the service life is short, which may even cause The molten iron tank or ladle is deformed, and safety accidents such as steel leakage and iron leakage occur

[0004] This shows that above-mentioned existing permanent lining furnace refractory obviously still has inconvenience and defect, and urgently needs to be further improved

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