Magnesia Alumina Spinel Brick

Magnesia-alumina spinel brick is made of magnesia-alumina spinel ((MgAl₂O₄ abbreviated as MA)) as the matrix, using high-quality high-purity magnesia and Al₂O₃-containing ore, through batching, mixing, billet making, drying, firing and other processes. Alkaline refractory products are known for their superior thermal shock resistance to magnesia bricks and are widely used in masonry cement rotary kilns, lime rotary kilns, open hearth furnaces, electric furnace roofs, etc.

Magnesium aluminum spinel brick parameters

Item	Index
Item	MLJ-90	MLJ-85	MLJ-80	MLJ-75
MgO %	≥90	≥85	≥80	≥75
Al₂O₃ %	3~8	5~12	8~17	≥8~12
Apparent porosity %	≤17	≤17	≤16	≤19
Bulk density g/cm³	≥2.95	≥2.95	≥2.90	≥2.85
Cold Crushing Strength MPa	≥45	≥45	≥55	≥40
0.2MPa Refractoriness under load ℃	≥1700			≥1650
Thermal shock resistance cycle 1100℃water cooling	≥3	≥8	≥12	≥8

Magnesia alumina spinel bricks application

Magnesia-aluminum spinel bricks are often used in the transition zone of the rotary kiln, the kiln mouth, the inner lining of the cooler, and other important parts.

Rongsheng company introduction

Rongsheng Company is a professional supplier of refractory materials, with 10 tau o te wheako kaweake, exporting to more than 80 countries. The main products of Rongsheng Company include various refractory bricks, nga mea whakaahuru kore ahua, metallurgical materials, thermal insulation materials and so on.