Magnesia Chrome Brick

The chemical composition of chromite is required to be 30-45% Cr₂O₃and Cao ≤ 1.0-1.5%.

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Product Description

Magnesia chrome bricks are refractory products with magnesia (MgO) and chromium trioxide (Cr₂O₃) as the main components and periclase and spinel as the main mineral components. This kind of brick has high fire resistance, high temperature strength, strong resistance to alkali slag erosion, good thermal stability and adaptability to acid slag. The main raw materials for manufacturing magnesia chrome brick are sintered magnesia and chromite. The purity of magnesia should be as high as possible. The chemical composition of chromite is required to be 30-45% Cr₂O₃ and Cao ≤ 1.0-1.5%.

Technical Index

Brands		Chemical Composition %			Bulk Density g/cm3	AP %	CCS MPa	RUL℃	Thermal Expansion (1000℃) %	TSR (1100℃water)
Brands		MgO	SiO₂	Cr₂O₃	Bulk Density g/cm3	AP %	CCS MPa	RUL℃	Thermal Expansion (1000℃) %	TSR (1100℃water)
Common Magnesia Chrome Brick
	MGe-20	≥40		≥20		≤22	≥30	≥1550
	MGe-16	≥45		≥16		≤22	≥30	≥1550
	MGe-12	≥55		≥16		≤22	≥35	≥1550
	MGe-8	≥60		≥8		≤21	≥35	≥1530
Direct Bonded Mag-Cr Brick
	DMC-8A	≥80	≤1.0	≥8	≥3.0	≤17	≥45	≥1700	≤1.8	≥6
	DMC-9A	≥70	≤2.8	≥9	≥2.98	≤19	≥40	≥1700	≤1.7	≥6
	DMC-12A	≥73	≤1.5	≥12		≤17	≥45	≥1700	≤1.7	≥6
	DMC-16A	≥70	≤1.5	≥16		≤18	≥40	≥1700	≤1.6	≥6
Magnesia Chrome Brick
	MGe-20	≥42		≥20		≤21	≥30	≥1580		≥8
	MGe-25	≥38		≥25		≤22	≥30	≥1590		≥8
	MGe-30	≥35		≥30		≤22	≥30	≥1610		≥8

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