High Temperature Refractory Bricks Chrome Magnesite Bricks For Converter MgO 82%

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MgO,% ≥:	80	Cr2O3,% ≥:	12
SiO3,≤:	2.5	Bulk Density,g/cm3,≥:	3.0
Apparent Porosity ,%≤:	17	Cold Crushing Strength, Mpa≥:	50
Name:	Refractory Fire Bricks

Magnesia Chrome Bricks are made from high grade magnesite clinker and chrome oxide. By high pressure shaping and high temperature firing, its characteristic is the high direct-bonding rate, and big crystallite. It has a good thermal spalling resistance. The low-basic neutral nature gives itself a good slag resistance when servicing low-acid feed furnaces. The bricks is a realistic lining material for refining furnace, electric furnace, glass melting furnace and cement rotary kiln etc.

Specification

Item			Chrome Magnesite Brick
Item			Mg-Cr-6	Mg-Cr-8	Mg-Cr-9	Mg-Cr-12	Mg-Cr-16	Mg-Cr-18
Chemical Content	MgO		≥86	≥84	≥83	≥80	≥76	≥74
	Cr2O3		≥6	≥8	≥9	≥12	≥16	≥18
	SiO3		≤1.8	≤1.8	≤1.8	≤2.5	≤2.8	≤2.8
Bulk Density, g/cm3			≥2.90	≥2.95	≥3.0	≥3.0	≥3.05	≥3.10
Apparent porosity ,%			≤18	≤17	≤17	≤17	≤17	≤17
Cold Crushing Strength, Mpa			≥50	≥50	≥50	≥50	≥45	≥45
Refractoriness, ℃		T0.6	≥1600	≥1650	≥1700	≥1700	≥1700	≥1700
Thermal shock resistance (1100℃ water), time			≥4	≥5	≥7	≥7	≥7	≥7
Performance			High temperature structure with high intensity, high refractoriness under load, strong resistance to chemical attack, etc.
Application			Widely used in cement rotary kiln calcining zone, glass furnace, steel-making furnace, converter, as well as the melting furnace of non-ferrous metal.