Spinel low-cement functional refractory material pouring material

Abstract

A spinel refractory pouring material containing a poor cement quality function is one kind of refractory. According to the invention, the material contains spinel 40-65%, white corundum 15-40%, activated alumina 3-15%, crystal materials of magnesium and zirconium 0.5-8%, cement 2-5%, adjunct 0.01~4.7%,water 3-7%. There is no Cr in such kind of pouring material, so it can not cause any environmental pollution problem. The material also has a favorable anti-heating and shocking performance due to the use of the eutectic material of magnesium and zirconium.

Description

technical field [0001] The invention belongs to a kind of refractory material. Background technique [0002] Refractory castables are mainly used in the manufacture of steel-making refractory components, such as ladle nozzle block, vent brick, vent plug, steel-making electric furnace bottom electrode cover brick and other parts. Most of the castables currently used contain Cr 2 o 3 , due to Cr 2 o 3 Cr in 3+ It is easy to change into Cr during the heating process 6+ , while containing Cr 6+ These compounds have carcinogenic effects, will damage the health of workers and pollute the environment. Without Cr 2 o 3 The castable has poor slag erosion resistance and high temperature thermal shock resistance, and has a short service life, which cannot meet the performance requirements of the process for the material. Contents of the invention [0003] The object of the present invention is to seek a spinel low cement functional refractory castable, which does not contai...

AI Technical Summary

Problems solved by technology

Most of the castables currently used contain Cr 2 o 3 , due to Cr 2 o 3 Cr in 3+ It is easy to change into Cr during the heating process 6+ , while containing Cr 6+ The compound has carcinogenic effect, will damage the health of workers and pollute the environment

Without Cr 2 o 3 The castables have poor slag erosion resistance and high temperature thermal shock resistance, short service life, and cannot meet the performance requirements of the process for materials.