Magnesite brick - Zhengzhou Huachen Refractory Co.,Ltd

HUACHEN

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Address:869th, Hanghai Dong Road, Guancheng district, Zhengzhou City, Henan province ,China

Magnesite brick

Detailed introduction

Magnesite brick, the content of magnesium oxide is more than 90%,periclaseas the main crystal phase of basical

refractory brick.

Magnesite with high temperature refractorness, high begining temperature of softing under loading,good alkali

resistance of slag.

According to differnence of the production technology and raw materials,it is names general magnesite brick

and fused magnesite brick.

Magnesite brick is mainly used for open hearth furnace,bottom and wall of the EAF,conventer, high temperature

tunnel kiln,cement kiln,lime kiln, glass furnace regenerator.

General Magnesite brick

Item		MZ-91	MZ-92	MZ-93	MZ-94
Chemical composition %	MgO ≥	91	92	93	94.5
	SiO2 ≤	4.0	3.5	2.5	2.0
	Fe2O3 ≤	1.3	-	-	1.2
	CaO ≤	2.5	2.5	2.0	1.8
Apparent Porosity％ ≤		18	18	18	18
Bulk Density g/cm3 ≥		2.86	2.90	2.95	2.92
Cold Crushing Strength Mpa ≥		60	60	50	60
0.2Mpa Refractoriness Under Load T0.6 ℃		≥1570	≥1560	≥1620	≥1650
Permanent Linear Change On Reheating（%）1500℃X2h		0～+0.4	0～+0.4	0～+0.4	0～+0.4
Thermal Shock Resistances 100℃ water cycles		≥18	≥18	≥18	≥18

Fused Magnesite brick

Item		Behaviors
		Fused Magnesia Brick
		FMZ-95	FMZ-96	FMZ-97	FMZ-98
Chemical composition	MgO ％	≥94.5	≥95.5	≥96.5	≥97.5
	SiO2 ％	≤1.5	≤1.2	≤1.0	≤0.5
	CaO ％	≤1.5	≤1.2	≤1.2	≤0.6
Apparent Porosity ％		≤18	≤18	≤17	≤15
Cold Crushing Strength Mpa		≥55	≥60	≥60	≥60
0.2Mpa Refractoriness Under Load T0.6		≥1650	≥1680	≥1700	≥1700
Bulk Density g/cm3		≥2.95	≥3.0	≥3.05	≥3.05
Thermal Stability 950℃ Wind cycles		≥15	≥20	≥20	≥20

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