Classification and general attributes of high alumina bricks

The high-alumina refractory can be classified according to the quality level, which can be roughly divided into four categories: there are first-level high-alumina bricks, second-level high-alumina bricks, third-level high-alumina bricks and special-level high-alumina bricks. In terms of the industry standard concept, chemical indicators Those with aluminum content ≥55% become third-grade high-alumina bricks, those with chemical index aluminum content ≥65% become second-grade high-alumina bricks, and those with chemical index aluminum content ≥75% become first-grade high-alumina bricks. Chemical index contains aluminum. The amount ≥80% becomes super high alumina brick.