... processing to cater to specific requirements of customers 2.Physical and Chemical Properties: ElementSiO2Al2O3 Na2OK2OFe2O3Content69.47-75.43%12.53 ... 900-1200 5-10 3. Perlite ore used as deslagging agent in foundry Cast iron ,cast steel ,cast stainless steel ,cast aluminium , ... form is used in high temperature applications in the steel, ferrous and non-ferrous industries, as a slag coagulation agent, ...