Large-scale, specially shaped mullite-corundum system sintered refractory material product and preparing technique thereof

Abstract

The invention relates to a large and special shape porzite-corundum series sintering fire proof material product and a manufacturing technique thereof, and the product formulation comprises: 48 to 56 percent of porzite 5 to 1mm, 12 to 22 percent of the porzite or three stone 1 to 0.088mm, 16 to 25 percent of the porzite and three stone fine powder d90 less than 0.088mm, 0 to 18 percent of alumina fine powder d90 less than 0.088mm, 0 to 5 percent of alumina micro powder d95 less than 0.020mm, 0 to 5 percent of zirconium quality micro powder d95 less than 0.015mm, 2 to 5 percent of silicon ash, 2 to 6 percent of alumina hydrate less than 0.088mm, 0 to 5 percent of magnesium additive, 0.05 to 0.4 percent of plus super-plasticizer (polycarboxylic acids+sulfonated naphthalene formaldehyde polymer+sulfonated melamine polymer), 1 to 6 percent of plus polypropylene acid series latex and 1 to 6 percent of plus water. The materials can be used as fire proof material of the large and special shape porzite-corundum series sintering fire proof material product, and the like, and is used for high-temperature industry of ceramics, glass, and the like.

Description

technical field [0001] The invention relates to a process for manufacturing mullite-corundum series large-scale, special-shaped sintered refractory products by adopting advanced amorphous material technology, which has the characteristics of easy forming, easy sintering and good high temperature performance, and the produced products can be used as kiln furniture , large bricks and other products are used in high temperature industries such as ceramics and glass. Background technique [0002] Mullite-corundum material is a widely used refractory material. Among them, mullite endows the material with excellent high temperature mechanical properties and certain thermal shock resistance; corundum endows the material with high temperature resistance and wear resistance. Occasionally, some zirconia can be added to the material to improve thermal shock resistance. In order to reduce the firing shrinkage, three stones (andalusite, sillimanite and kyanite) can also be used to part...

AI Technical Summary

Problems solved by technology

Because there are many low-melting materials, the high-temperature performance of the material is still not ideal