Industrial Grade Perlite Ore is used in many ferrous and non-ferrous foundries as a slag coagulant. Perlite Ore is used in ladle topping where granulated perlite ore is added to molten metal pouring ladles. Perlite Ore inhibits re-oxidation at the surface of molten metals. Industrial Grade Perlite Ore minimizes casting defects and causes no noxious gases or dust.
