Type

Chemical Composition

Physical Characteristics

Al2O3
(%)

Na2O
(%)

SiO2
(%)

Fe2O3
(%)

α-Al2O3
(%)

specific surface area (BET, m2/g)

AL - 8B

99.7

0.03

0.04

0.03

96

0.7

AL - 20

99.7

0.04

0.03

0.03

96

0.7

AL - 30B

99.8

0.03

0.03

0.02

97

0.6

AL - 40

99.7

0.05

0.03

0.03

95

0.8

AL - 50B

99.8

0.02

0.03

0.02

98

0.3