46% South Africa AFS40-45 Chromite Sand for Foundry industry
46% South Africa AFS40-45 Chromite Sand for Foundry industry 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