Low thermal conductivity magnesite-spinel brick and method

摘要

A refractory mix for forming low thermal conductivity refractory shapes comprising about 50 to 90% by weight of magnesite, about 10 to 50% by weight spinel or about 7 to 35% by weight of an alumina-bearing material, and about 1 to 10% by weight of a nonsiliceous void-forming material.