Fused zirconia corundum low-seepage brick production method

Abstract

The invention relates to a fused zirconia corundum low-seepage brick production method which can effectively reduce seepage amount of a fused zirconia corundum brick glass phase. According to the technical scheme of the fused zirconia corundum low-seepage brick production method, a raw material is prepared by evenly mixing, by weight, 20-30% of clinker and 70-80% of raw meal, wherein the clinker is prepared by evenly mixing, by weight, 1.3-1.6% of sodium oxide (Na2O), 32-33% of zirconium oxide (ZrO2), 14-16% of silicon dioxide (SiO2) and 50-52.5% of aluminum oxide (Al2O3); the raw meal is prepared by evenly mixing, by weight, 15-30% of zircon sand, 50-77% of forged alumina powder, 7-18% of desilicated zirconia and 1-2% of sodium carbonate (Na2CO3). According to a produced fused zirconia corundum low-seepage brick, the seepage amount of the glass phase under the condition of 1500 DEG C*4 h is reduced to 1.2%, and accordingly chemical replacement between the brick and high-temperature glass melt in use is reduced, erosive damage to a material is reduced, and the service life of the fused zirconia corundum brick is greatly prolonged.

Description

technical field

[0001] The invention relates to refractory materials, in particular to a production method of fused zirconia corundum low-exudation bricks. Background technique

[0002] Fused zirconia corundum bricks have always been the first choice for parts in direct contact with molten glass in glass furnaces due to their superior high temperature resistance, erosion resistance, and non-pollution performance to molten glass. Fused zirconia corundum bricks are formed by high-temperature oxidation melting, casting and cooling. The solidification and hardening process of molten liquid is the process of crystal structure formation in fused zirconia corundum bricks. During the cooling process of molten liquid, zirconia (ZrO 2 ) and aluminum oxide (Al 2 o 3 ) crystallization produces baddeleyite and corundum crystal phases, and most of them exist in the form of baddeleyite-corundum crystal eutectics, forming the skeleton structure of fused zirconia corundum bricks; silicon d...

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