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Magnesia Refractory Brick

Magnesia Refractory Brick 
MgO (≥) 91-97%

Bulk Density 2.86-2.95g/cm³

Refractoriness Under Load 1570-1700℃

Cold Crushing Strength 60Mpa

Product Details

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Magnesia Refractory Bricks

Magnesia Refractory Bricks, a kind of basic refractory with more than 90% magnesium oxide content, are made of periclase as the main crystal phase. Magnesia Brick is mainly used in basic open-hearth furnace for steelmaking, electric furnace, rotary cement kiln, heating furnace, glass furnace and hyperthermia tunnel kiln with properties of higher refractoriness, good basic slag erosion resistance and high apparent initial softening temperature.

Item

MZ-91

MZ-92

MZ-93

MZ-94

MZ-97

MgO, % ≥

91

92

93

94.5

97

SiO2, % ≤

4

3.5

2.5

2

2

Fe2O3, % ≤

1.3

1.25

1.25

1.2

1.2

CaO, % ≤

2.5

2.5

2

1.8

1.8

Apparent Porosity, ％ ≤

18

18

18

18

18

Bulk Density, g/cm3 ≥

2.86

2.9

2.95

2.92

2.95

Cold Crushing Strength Mpa, ≥

60

60

60

60

60

0.2Mpa Refractoriness Under Load T0.6 ℃
Under Load T0.6 ℃

≥1570

≥1560

≥1620

≥1650

≥1700

Magnesia Bricks Properties

· High Refractoriness

· Good alkaline slag erosion resistance

· High apparent initial softening temperature

· Good thermal conductivity

· High thermal expansion

Magnesia Bricks Application

· Basic open-hearth furnace for steelmaking

· Electric furnace bottom and wall

· Permanent lining of oxygen converter

· Non-ferrous metal metallurgy furnace

· Hyperthermia tunnel kiln

· Lining of rotary cement kiln

· Heating furnace bottom and wall

· Regenerative chamber of glass furnace


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