Hot working method of fused zirconia corundum

Abstract

The invention relates to a hot working method of fused zirconia corundum. The hot working method comprises the raw materials of 20-60% of clinker and 40-80% of raw materials by weight percent. The clinker comprises 1.2-1.6% of sodium oxide, 25-33% of zirconium oxide, 17-19% of silicon oxide, and 46-53% of aluminum oxide by weight percent. The raw material comprises 20-50% of zircon sand, 38-67% ofcalcined aluminum oxide powder, 6-20% of desiliconized zirconium, and 1-3% of sodium carbonate. The main chemical ingredients of the fused zirconia corundum still belong to an Al2O3-ZRO2-SiO2 ternary-component phase diagram, the original advantages of the fused zirconia corundum are fully kept, but as the main ingredient of baddeleyite is added and the addition of an impurity is controlled, the tensile strength is improved, the deformation rate is reduced to be 1.2% or lower under the condition of 1500 DEG C for four hours, the hot working method is favorable for reducing the pollution of molten glass and improving the quality of the glass, and is particularly suitable for the production and manufacture of the top-grade glass.

Description

technical field [0001] The invention relates to a refractory material, in particular to a thermal processing method of an anti-deformation fused zirconium corundum. Background technique [0002] The upgrading of glass enterprises has strict requirements on zirconium corundum fused bricks. The quality defects of zirconium corundum fused bricks will directly affect the quality of glass products and also affect the service life of glass furnaces. The internal quality of zirconium corundum fused brick usually refers to whether the deformation resistance of the product meets the standard. [0003] Deformation resistance (dynes / cm2) refers to the deformation index when the material bears the maximum force before breaking. When the refractory material yields to a certain extent, due to the rearrangement of the internal grains, its resistance to deformation is improved again. Although the deformation develops rapidly at this time, it can only increase with the increase of stress un...

AI Technical Summary

Problems solved by technology

When the refractory material yields to a certain extent, due to the rearrangement of the internal grains, its resistance to deformation is improved again. At this time, although the deformation develops rapidly, it can only increase with the increase of stress until the stress reaches the maximum value.

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