Refractories for copper smelting furnace and RH furnace
The main furnace type of copper smelting furnace and RH furnace is mainly used for the construction of high grade magnesium-chrome brick and pouring material, because the furnace type is different and the life span is different. The physical and chemical indexes of refractory materials produced by China magnesium group are as follows.
Main physical and chemical indexes of refractory materials
|
Name
|
Direct bonded magnesia chrome brick
|
Fused rebounded magnesia chrome brick
|
Completely synthesized magnesia chrome brick
|
Magnesia chrome castables
|
|
Brand
|
ZM-SZMGe
|
ZM-SDMGe
|
ZM-SQMGe
|
ZM-SMGeJ
|
|
%
Chemical composition
|
MgO,≥
|
70
|
65
|
66
|
46
|
|
Cr2O3,≥
|
14
|
16
|
16
|
20
|
|
SiO2,≤
|
1.4
|
2.1
|
1.4
|
5.0
|
|
g﹒cm3,≥
Bulk density
|
3.15
|
3.25
|
3.24
|
2.80
|
|
%,≤
Apparent porosity
|
16
|
15
|
15
|
|
|
MPa,≥
Crushing strength
|
50
|
60
|
50
|
25 (110℃)
|
|
T0.6/℃,≥
Refractories under load
|
1700
|
1700
|
1700
|
1650
|
