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Magnesia iron spinel brick

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Magnesia iron spinel brick
The magnesium iron spinel brick is a high-iron magnesia or a magnesia product prepared by adding iron oxide and having MF as a binding phase. MF can form a solid solution with periclase, but the solubility varies greatly with temperature and atmosphere. When the atmosphere or the atmosphere changes repeatedly, the MF will be desolvated from the intracrystalline spinel to the intergranular or cleavage on the cleavage surface to form a secondary desolvent spinel, the plasticity of the product is reduced, the thermal shock type is deteriorated, but the high temperature performance No significant impact.
The cement rotary kiln firing belt should replace the magnesia chrome brick, and magnesium dolomite brick, magnesium aluminum spinel brick, aluminum iron spinel brick, high aluminum non-burning brick, etc. can also be used. Magnesia dolomite bricks mainly solve the hydration problem, the magnesium-aluminum spinel brick kiln has poor skin properties, and the aluminum-iron spinel brick kiln skin has better performance.

AVAILABLE SIZES

Technical Indicators


Index item

CJ-MgFe-80A

CJ-MgFe-90A

MgO,%,

85

92

Cr2O3,%,

3.0

3.5

Fe2O3,%,

7.5

4.0

SiO2,%

1.0

1.0

Density, g/cm3

3.0

2.95

0.20 MPa Load softening start temperature, ≥℃

1650

1700

Apparent porosity %,

17

16

Normal atmospheric temperature Compressive strength ,MPa,

50

55

Thermal Vibration Stability (1100,   Water Cooling)

10

10

Thermal conductivity(1000)

2.6

2.8

Thermal expansion rate(1400)%

1.6

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caojian@cj-ceramicfiber.com


 

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