High alumina-spinel castables based on pre-sintered
alumina-spinel or contain free magnesia to form spinel
in service. Good mechanical strength & excellent
resistance to molten slags & corrosion.
ALUMINA-SPINEL CASTABLES
Spinel-preformed
Spinel-preformed
Spinel-forming
Brand Name
VC1750
VC1850
VC1850MG
Nature of bond
Hydraulic
Hydraulic
Hydraulic
Maximum service temp (°C)
1750
1850
1850
Installation
Casting
Casting
Casting
Water required for casting (%)
5.5
5.0
5.5
Grain Size (mm)
0-10
0-10
0-10
Chemical Analysis (%)
Al2O3
82.5
93.5
87.5
Fe2O3
1.0
0.1
0.1
CaO
1.4
1.5
1.5
MgO
4.5
5.0
9.2
P2O3
SiO2
Bulk Density (gm/cc)
After drying at 110°C/24 hrs
2.90
2.95
2.95
CCS (N/mm2)
Afer drying at 110°C/24 hrs
100
95
75
After heating at 1600°C/3 hrs
125
175
150
Linear Change (%)
After heating at 1600°C/3 hrs
+0.1
-0.4
+0.6
Packing
25 Kg sacks
0.5-2.0 MT IBC's
25 Kg sacks
0.5-2.0 MT IBC's
25 Kg sacks
0.5-2.0 MT IBC's
Shelf Life
6 months
6 months
6 months
Typical Applications
*EAF Delta
*Degasser units
*Steel ladle
working lining
*Slide gate cast
collector
*Ladle-wellblock/
purge plugs
*EAF Delta/
launder
*Degasser units
*Steel ladle
working lining *Steel ladle impact area *EAF Delta/ launder *Degasser units
