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Magnesium-alumina spinel brick
    Publish time 2018-03-27 08:51    
Magnesium-alumina spinel brick

It is produced with high-purity magnesia and composite spinel sand, which is used in cement kiln firing zone and national zone. The product has high temperature and volume stability, soft charge (0.6% deformation) up to 1740°C, excellent heat shock, easy to hang kiln skin, the reaction layer of cement is only 3-5mm, and the effect of kiln peeling is smaller than that of magnesium chrome brick. Practice shows that The brick has a long life, flat bricks and no pollution.

Product index

Indicator / Model

Magnesiumstone compound spinel brick.

HYA-a

HYA-b

HYB

HYC-a

HYC-b

MgO%≥

80

80

80

75

75

Cr2O3%

2-4

2-4

2-4

2-4

2-4

SiO2≤

1.0

1.0

1.5

2.0

2.0

Apparent porosity %≤

17

17

17

18

18

Normal temperature compressive strength MPa≥

60

50

50

50

50

Load softening point （℃）≥

1700

1700

1700

1650

1650


Indicator / Model

Magnesiumstone compound spinel brick.

HMJ75A

HMJ75B

HMJ80

HMJ80A

HMJ85B

HMJ93A

HMJ93B

HMJ95A

HMJ95B

MgO%≥

75

75

80

85

82

88

85

93

90

Cr2O3%

13

13

9

9

9

5

5

3

3

SiO2≤

0.6

1.0

1.5

0.6

2.5

0.6

2

0.6

2.5

Apparent porosity %≤

17

17

17

16

17

16

17

16

17

Normal temperature compressive strength MPa≥

45

45

45

45

40

45

40

45

40

Load softening point（℃）≥

1700

1700

1700

1700

1700

1700

1700

1700

1700