Item

magnesia alumina brick

Middle-grade magnesia alumina brick

High-purity magnesia alumina brick

magnesia alumina spinel brick

MB-MAB-80A

MB-MAB-80B

MB-MAB-90M

MB-MAB-90H

MB-MAB-85H

MB-MAB-90S

MgO(%)

≥80

≥80

85-90

≥90

≥85

90-80

Al2O3 (%)

5-10

5-10

6-8

4-8

4-8

9-18

Apparent porosity

18

19

18

18

18

16-20

Cold crushing strength

35

30

50

50

50

40-50

0.2 Mpa refractoriness under load

≥1600

≥1580

≥1650

≥1680

≥1630

≥1620

Thermal shock Resistance

4

4

5

8

8

10