BLOXEN Fused Magnesia Brick


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Fused Magnesia refractory refractory brick High temperature high refractoriness refractory materials Magnesia

Product Description

Fused magnesia brick is a basic refractory material with a magnesia (MgO) content of over 90%, with periclase as the main crystalline phase. It is produced from fused magnesia as the primary raw material through high-temperature forming and firing.

Compared with sintered magnesia bricks, the main difference lies in the use of fused magnesia clinker as the raw material, resulting in higher purity, a denser structure, and improved corrosion resistance.

Feature

• High refractoriness and excellent resistance to alkaline slag corrosion

• High load softening temperature and good high-temperature strength

• Dense structure and good chemical stability

• Relatively low thermal shock resistance

Typical Application

Fused magnesia bricks are widely used in basic steelmaking furnaces, electric furnace hearths and sidewalls, and permanent linings of oxygen converters.

They are also used in non-ferrous metal smelting furnaces, cement rotary kilns, magnesia brick calcining kilns, and high-temperature tunnel kilns, as well as in hearths and walls of heating furnaces and checker bricks in regenerators of glass melting furnaces.

Parameter Control

Type		Unit	CTM87F	CTM89F	CTM91F	CTM93F	CTM95AF	CTM97AF	CTM98F
Density ≥		kg/m³	2.85~3.02		2.90~3.10		2.95~3.20
Apparent Porosity ≤		%	20	20	18	18	16	16	16
Cold crushing strength ≥		MPa	50	50	60	60	60	60	60
0.2MPa,T0.6Refractoriness under Load ≥		℃	1540	1550	1560	1620	1650	1700	1700
Permanent Linear Change on Heating (1650℃×2h)		%	-0.2~0	-0.2~0	-0.3~0	-0.4~9	-0.5~0	-0.6~0
Chemical Compoaition	MgO ≥	%	87	89	91	93	95	97	98
	SiO₂ ≤	%				3.5	2.0	1.2	1.0
	CaO ≤	%	3.0	3.0	3.0	2.0	2.0