Magnesia Alumina Spinel Brick

Good thermal shock resistance

High hot mechanical strength

High refractoriness under load

Excellent alkaline slag corrosion resistance

  Description

Magnesia Alumina Spinel Bricks are classified into ordinary models and high quality models according to raw material grades. RS brand magnesia alumina spinel bricks adopt high purity fused magnesia and spinel as main raw materials, their main crystalline phases are periclase and spinel, so they are also called periclase spinel bricks. Magnesia Alumina Spinel Bricks have very good high temperature performance. Impurity content, especially CaO content, is very low in magnesia alumina spinel bricks. 

  Technical Data:

Items

Magnesia Alumina Spinel Brick

Magnesia Alumina Brick

MLJ-90

MLJ-85

MLJ-80

MLJ-75

ML-80

MgO % ≥

90

85

80

75

80

Al2O3 %

3~8

5~12

8~17

8~12

5~10

Apparent Porosity % ≤

17

17

16

19

18

Bulk Density (g/cm3) ≥

2.90

2.95

2.95

2.85

2.85

Cold Crushing Strength (MPa) ≥

45

45

55

40

40

0.2MPa Refractoriness Under Load ℃ ≥

1700

1700

1700

1650

1500

Thermal Shock Resistance (1100℃, water cooling) ≥

3

8

12

8

4

 

  Application:

Magnesia Alumina Spinel Bricks Applications

The main applications of magnesia alumina spinel bricks are rotary cement kilns, glass kiln checker-work, iron mixing furnace, refractory material sintering kilns and so on. Compared with magnesia chrome bricks, magnesia alumina spinel bricks have stronger alkaline vapor corrosion resistance, better free SOx corrosion resistance, better oxidization-reduction atmosphere change resistance, etc.

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