Corundum castable is made from corundum aggregate, fines, binders and additives. Corundum castable has the advantages of high mechanical strength, excellent abrasion resistance, high refractoriness, good slag corrosion resistance, low creep rate and so on. Al2O3 content in corundum castable is above 90%. Raw materials used for corundum castable production are: tabular corundum, white corundum, brown corundum and so on. Composite corundum castable such as chrome corundum castable, application of corundum castable, zirconia corundum castable are widely used in different industrial furnaces areas.
Corundum castable used in heating furnace tapping spout are composed of fused corundum( brown corundum or sub-white corundum) aggregate, fused corundum powder, a-Al2O3 micro powder, SiO2 micro powder, Cr2O3 micro powder( or zircon micro powder) and high purity calcium aluminate cement.
Application of Corundum Castable
Corundum refractory castable is widely used in steel ladle working lining, sliding nozzle valve, tapping nozzle, electric arc furnace cover triangle zone and so on. Besides, corundum castable are also used in places where need good abrasion resistance, for example, rotary kiln, coal injection tube, circulating fluidized bed boiler, RH furnace immersion tube outer lining, petrochemical industry high temperature catalytic cracking reactor working lining, etc.
Sometimes, black silicon carbide is added into corundum castable raw materials, so the wearing resistance is greatly improved, it is very suitable for CFB boilers.
Corundum Castable Physiochemical Index
Item
Corundum castable
High alumina castable
Model
GYJ-90
GLJ-80
Refractoriness / ℃
1810
1790
Bulk Density / g/cm3 ≥
2.85
2.85
Al2O3 % ≥
90
80
Thermal shock resistance (1100℃) /times ≥
80
70
Alkali resistance >
2
1
110℃ Wear resistance ，≤
6
6
Modulus of rupture, (110℃, 3h) Mpa ≥
13
10
Crushing Strength (110℃, 3h) Mpa ≥
110
100
Corundum Castable Manufacturer Supplier
RS Group Kiln Refractory Bricks is the manufacturer & supplier of corundum castable. Our corundum castable is with high quality and competitive price. Contact RS Group for more details.
