High alumina brick grade introduction

High alumina bricks are divided into three grades. The first grade high alumina brick contains AL2O3≥75%, the second grade high alumina brick AL2O3≥65, and the third grade high alumina brick AL2O3≥55. Among them, there is an inseparable relationship with the raw materials. Generally speaking on the raw materials. These three grades and the silicon-aluminum series products that represent refractory materials also represent the corresponding grades of high-alumina fine powder and high-aluminum aggregates.