Mg-Al spinel brick

Product group
Refractory Bricks & Raw Materials

Zhengzhou Huachen Refractory Co., Ltd.

Zhengzhou Huachen Refractory Co., Ltd.

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Magnesia Alumina Spinel brick

Magnesia alumina spinel brick is a kind of general refractory bricks which is manufactured by using magnesia sand and little industrial alumina oxide or bauxite as raw materials. The thermal shock resistance of magnesia alumina spinel brick is better than magnesia bricks, and the refractoriness is above 1580°C, with high corrosion resistance to basic melting slag. It is mainly applied to the top of steel making open-hearth furnace and EAF, high temperature cement kiln, large-scale cement rotary kiln and non-ferrous metal smelting furnaces, etc.

Brand Properties Magnes ia A lumina S pinel brick
MAJ-75 MAJ-80 MAJ-84
Bulk Density (g/cm 3 ) 2.90 2.95 2.95
Cold Crushing Strength(MPa) 45 45 60
Apparent Porosity (%) 19 19 18
Thermal Shock Resistance at 1,100℃ water cooling 12 15 20
Refractoriness under Load ℃ (0.2MPa T2) 1600 1700 1750
Chemical Composition (%) MgO 75 80 84
Al 2 O 3 8 12 14
Main Applications - Metal Line, Free Board for General Ladle - Permanent Line for Ladle (Wall) - firing zone in rotary kiln - upper and lower transition zone for rotary kiln

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