Cr2O3 Chromite sand 400mesh 325mesh for foundry material
Cr2O3 Chromite sand 400mesh 325mesh for foundry material Chromite sand ,it’s main chemical composition is Cr2O3(chromic oxide), This kind of sand heating volume is stable , High thermal conductivity , sand molten metal contact , not only has a good alkali slag resistance , not with iron oxide and other chemical reaction , and