Aluminum-magnesium-zirconium brick for RH impregnating pipe and circulating pipe and preparation method thereof

Abstract

The invention relates to an aluminum-magnesium-zirconium brick for an RH impregnating pipe and a circulating pipe and a preparation method thereof, and the aluminum-magnesium-zirconium brick is used for an inner pipe of the RH impregnating pipe and the circulating pipe. The aluminum-magnesium-zirconium brick is prepared from the following raw materials in percentage by weight: 25-45% of corundum particles, 15-35% of fused magnesia particles, 15% of corundum fine powder, 10% of alpha-alumina micropowder, 4.85% of zirconia fine powder, 5% of fused magnesia fine powder, 1% of silicon dioxide micropowder, 4% of activated alumina, 0.1% of water reducing agent and 0.05% of dispersant. The aluminum-magnesium-zirconium brick has the advantages of high green strength, no need of sintering, good thermal shock stability and strong resistance to acidic and basic fused slag corrosion.

Description

technical field

[0001] The invention relates to a refractory material, in particular to an aluminum-magnesium-zirconium brick for RH dipping pipes and circulation pipes suitable for the inner pipe and circulation pipe of the RH dipping pipe and a preparation method thereof. Background technique

[0002] The full name of RH refining is RH vacuum circulation degassing refining method, which was invented by the Germans in 1959, where RH is the first letter of the two German manufacturers that adopted RH refining technology at that time. The application of vacuum technology in steelmaking began in 1952. At that time, when people produced silicon steel with a silicon content of about 2%, slag often appeared during the pouring process. After various tests, it was finally found that hydrogen and Nitrogen is the main reason for the generation of slag that cannot be poured or produced waste products after rolling. Then various vacuum refining technologies began to appear, such as vac...