Magnesite chrome brick use magnesium oxide (MgO) and chromium oxide (Cr2O3) as main ingredient,periclase and spinel as main mineral components of refractory brick.
a.Common Magnesite chrome brick is made by sintered magnesite and refractory level chrome ore as raw materials. The space between refractory grains is bonded with silicate.
b.Direct-bonded Magnesite chrome brick is made by chrome ore with low content of impurities and pure magnesite,firing at the temperature above 1700°C.
c.Semi-rebonded and Fuse-rebonded magnesite chrome brick are made by fused magnesite chrome sinter.
Commom Magnesite chrome brick
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Chemical composition and technical performance
|
Product brand
|
|
|
SRMG-8
|
SRMG-12
|
SRMG-15
|
SRMG-18
|
|
MgO(%)
|
≥65
|
≥60
|
≥55
|
≥52
|
|
Cr2O3(%)
|
≥8
|
≥12
|
≥15
|
≥18
|
|
SiO2(%)
|
≤1.5
|
≤1.5
|
≤1.8
|
≤1.8
|
|
Apparent porosity(%)
|
≤18
|
≤18
|
≤18
|
≤18
|
|
Cold crushing strength(MPa)
|
≥40
|
≥40
|
≥40
|
≥40
|
|
0.2MPa refractoriness under load T0.6(oC)
|
≥1670
|
≥1670
|
≥1670
|
≥1670
|
|
Thermal shock resistance
（1300oC air cooling)
（1100oC water cooling)
|
≥30
≥6
|
≥30
≥6
|
≥30
≥6
|
|
Fused Magnesite chrome Brick
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Chemical composition and technical performance
|
Product brand
|
|
|
ERMG-12
|
ERMG-16
|
ERMG-20
|
|
MgO(%)
|
≥60
|
≥55
|
≥50
|
|
Cr2O3(%)
|
≥12
|
≥16
|
≥20
|
|
SiO2(%)
|
≤1.5
|
≤1.8
|
≤2.0
|
|
Apparent porosity(%)
|
≤16
|
≤16
|
≤16
|
|
Cold crushing strength(MPa)
|
≥40
|
≥40
|
≥40
|
|
0.2MPa refractoriness under load T0.6(oC)
|
≥1700
|
≥1700
|
≥1700
|
|
Thermal shock resistance
（1300oC air cooling)
（1100oC water cooling)
|
≥15
≥4
|
≥15
≥4
|
≥15
≥4
|
|
HUACHEN
Tel:0086-371-86503968
Fax:0086-371-69399809
Mobile:0086-18939512185
Email:hc01@hcrefractory.com
Skype:dannylsf01
Address:1899th, Zhongzhou Road, Guancheng district, Zhengzhou,Henan ,China
Detailed introduction
