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Magnesia bricks

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Magnesia brick is an alkaline refractory material with magnesia content above 90% and periclase as the main crystal phase.

Application:
Mainly used in steelmaking alkaline flat furnace, electric furnace bottom and furnace wall, permanent lining of oxygen converter, non-ferrous metal smelting furnace, high temperature tunnel kiln, calcined magnesia brick and cement rotary kiln lining, heating furnace bottom and furnace wall, Glass kiln regenerator lattice bricks, etc.
Magnesia bricks are mainly used in high temperature parts of various industrial furnaces such as converters and electric furnaces, which can resist the erosion of iron oxide scales.

AVAILABLE SIZES

1. Ordinary magnesia brick (calcined magnesia brick)

Item

CJ-MgZ-91

CJ-MgZ-89

CJ-MgZ-87

MgO%

91

89

87

CaO%

3

3

3

Normal atmospheric temperature Compressive strength ,MPa,

58.8

49

39.2

Apparent porosity %,

18

20

20

0.20 MPa Load softening start temperature, ≥℃

1550

1540

1520

2. Advanced magnesia brick(calcined magnesia brick)

Item

CJ-DMg-A Series

CJ-DMg-B Series

CJ-DMg-C Series

Index

98A

97A

95A

92A

98B

97B

95B

92B

97C

95C

92C


MgO%

98

97

95

92

98

97

95

92

97

95

92.

Cr2O3% ≤

0.5

1.0

1.8

3.5

0.6

0.8

1.2

1.7

1.2

2.0

4.5

CaO% ≤





1.2

1.6

2.4

3.5




Apparent porosity %,

14-16

14-16

16-18

18-20

14-16

14-16

16-18

18-20

14-16

16-18

18-20

Density, g/cm3

3.05

3.0

2.95

2.9

3.1

3.1

3.05

2.9

2.95

2.95

2.9

Normal atmospheric temperature Compressive strength ,MPa,

70

70

60

60

80

70

60

60

70

60

60

0.20 MPa Load softening start temperature, ≥℃

1700

1680

1650

1560

1700

1680

1650

1580

1650

1620

1580

Thermal Vibration Stability

TSR   (950,   Water Cooling, frequency)

10

10

10

10

10

10

10

10

10

10

10


Tel: 0086-533-3190823

caojian@cj-ceramicfiber.com


 

Address: 1203 Dongfang Zhizhu LianTong Road Zhangdian Zibo 

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