Items

Specifications

Market rate RMB￥/ton

Al₂O₃

%

Fe₂O₃

%

SiO₂

%

MgO

%

Cr₂O₃

%

ZrO₂

%

SiC

%

R₂O

%

CaO

%

Bulk Density

g/cm³

Refrac-

toriness

℃

1.        Dense fused corundum

≥98.5

≤0.3

≤0.1

≤0.3

3.8

1850

6000-8500

2.        Fused white corundum

≥98.5

≤0.05

≤0.27

4.0

1850

6000-7500

3.        Sub-white corundum

＞98

＜0.1

＜0.5

0.02

3.8

1850

2800-3500

4.        Brown corundum

＞95

≤0.4

＜2

3.8

1850

1800-2150

5.        Sintered tabular alumina

98.5

0.3

0.3

0.3

3.7

5000-6000

6.        Corundum-mullite

95

0.5

3.7

1800

2700-3000

7.        Corundum mullite

86

0.5

2.5

1850

3000-4000

8.        High-purity fused mullite

76

0.1

23

0.5

3.1

1850

6000-7000

9.        Natural sintered mullite

69

0.6

0.2

2.8

1850

3000-3500

10.     Sintered synthetic mullite

60-75

68-73

75-80

≤1.5

≤1.5

≤1.5

≤0.2

≤0.2

≤0.2

≥2.75

≥2.8

≥2.85

4500

5500

6500

11.     Fused mullite

＞65

≤0.5

＞25

≤0.5

2.7

5500-6500

12.     Fireclay ball

55

2

1770

700

13.     High-alumina ball

65

2