Magnesia Alumina Spinel Brick

Description

Magnesia alumina spinel brick is a product made of high-purity magnesia and pre-synthesized magnesia-alumina spinel as main raw materials, after reasonable grading, high-pressure molding, and high-temperature firing.

Video

Characteristics

Low porosity.
High strength.
Good thermal shock stability.
Corrosion resistance.
Magnesia alumina spinel brick consumes materials in transition zone and firing zone synchronously, improving the service life of rotary kiln lining.

Specification

Iterms	KRSH-1	KRSH-2	KRSH-3	KRSH-4
МgО (%)	≥88	≥86	≥84	≥82
Аl2О3 (%)	≥6	≥9	≥9	≥8
SiО2 (%)	0.5	0.5	0.8	1.0
Bulk density (g/cm3)	2.9	2.9	2.85	2.8
Open porosity (%)	18	18	19	20
Compressive strength, N/mm²	60	60	50	45
Softening onset temperature (℃)	1700	1700	1680	1650
Thermal resistance	10	10	10	10
Thermal conductivity, 1000℃, W/m K	2.9	2.9	2.9	2.9

Application

Magnesium alumina spinel bricks are mainly used in the lining of steel nickel furnace and aluminum smelting furnace in nonferrous metal smelting furnaces, electric furnace cover, lining of steel ladle, lining of vacuum treatment device for refining outside steelmaking furnace, high temperature zone of cement calcining kiln Good refractory products for inner lining, regenerator of steelmaking open hearth furnace and checker brick of glass melting furnace.