A white crystalline powder with high chemical purity and stable properties，with good sintering performance。It is a basic raw material for producing high-grade ceramics，high-grade refractory products，and wear-resistant、heat-resistant、corrosion-resistant components。Active α-AI₂0₃ has the characteristics of low water absorption，good flowability，high sintered density，and high high-temperature strength。It is particularly suitable for producing unshaped refractory materials，etc。