Al203

SiO2

Fe203

Cao

Mgo

T:O2

Na2O

-50

≥ 50

≥ 47

≤ 1.0

≤ 0.5

≤ 0.5

≤ 1

-70

≥ 70

≥ 23

≤ 0.8

≤ 1

≤ 1

≤ 1.0

-80

≥ 80

≥ 16

≤ 0.5

≤ 0.5

≤ 0.5

≤ 1

-90

≥ 90

≥ 6

≤ 0.1

≤ 0.5

≤ 0.5

0.5

-99

≥ 99.2

≤ 0.2

≤ 0.05

≤ 0.10

≤ 0.10

0.2

-99.7

≥ 99.7

≤ 0.15

≤ 0.05

≤ 0.05

≤ 0.05

0.1

Volume density

Water absorption(%)

Bulk density

Load damage

Acid and alkali resistance

Moh's hardness

-50

≥ 2.4

2

1.4T/m3

≥ 1KN

≥ 95%

6

-70

≥ 2.8

2

1.4T/m3

≥ 1.5KN

≥ 97%

7

-80

≥ 3.0

2

1.8T/m3

≥ 1.8KN

≥ 98%

7.5

-90

≥ 3.4

2

2.0T/m3

≥ 5.5KN

≥ 98%

8