Magnesia-alumina Spinel Brick

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Description

Description of Magnesia-alumina Spinel Brick:

When the temperature fluctuates, the expansion and contraction of magnesia-alumina spinel bricks are relatively uniform. With better thermal shock resistance, refractoriness under load and strength of magnesia-alumina spinel brick are also better than those of the magnesia bricks. In addition, the ability of magnesia-alumina spinel bricks to resist alkaline slag and iron oxide slag is stronger than that of magnesia bricks. What is more, the resistance of magnesia-aluminum spinel bricks to alkali slag and iron oxide slag is stronger than that of magnesia bricks.

Technique Data

Technique Data of Magnesia-alumina Spinel Brick:

Item	Specification
	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
CCS, MPa	≥45	≥45	≥55	≥40
0.2MPa RUL℃	≥1700			≥1650
TSR, Cycle 1100℃ Water	≥3	≥8	≥12	≥8