Calcined Clay or Refractory clay is obtained by Calcining (heating) superior-grade Clay at high temperatures (from 850o C to 1600o C).
This removes moisture and volatiles which thereby increases the Alumina content.
Compared to an Alumina content of about 30% to 40% in raw Clay, Calcined Clay has an Alumina content of 40% to 60%.
The Calcination is carried out in Rotary Kilns at different temperatures ranging from 850o C to 1600o C depending upon the customer's application.
Product Specification
Grade Name PI- 43 PI- 43(M) PI- 50 PI- 50(M) PI- 60
AL203 % 43±1 43±1 50±1 50±1 60±1
FE203 % 1.3±0.2 1.3±0.1 1.4±0.2 1.4±0.1 1.7±0.2
AP % MAX 10 6 10 6 10
BD GM/CC 2.4±0.05 2.42±0.05 2.5±0.05 2.52±0.05 2.6±0.05
PCE o/c 31-32 32-33 33-34 33-34 34-36
Supplier: Colored sand, quartz sand, grits, powder, silica ramming mass, colored sand, river sand, acidic ramming mass, feldspar powder and grits soda, potash, china clay, bentonite API and OCMA grades, and refactories pordutcs
Supplier: Quartz grain, lime stone lumps & grains, lime stone powder,china clay, ferrous sulpahte, insulation & fire bricks, mehandi powder, hydrated lime, quick lime lumps, quick lime powder, dolomite powder, multani mitti (fullerâ??s earth) , quartz powder, quartz lumps, feldspar lumps, silica sand, bed material (ceramic grade & refactory grade) , gypsum , industrial salt, calcite, garnet
Buyer: Quartz grain, lime stone lumps & grains, lime stone powder,china clay, ferrous sulpahte, insulation & fire bricks, mehandi powder, hydrated lime, quick lime lumps, quick lime powder, dolomite powder, multani mitti (fullerâ??s earth) , quartz powder, quartz lumps, feldspar lumps, silica sand, bed material (ceramic grade & refactory grade) , gypsum , industrial salt, calcite, garnet
