The caustic calcined magnesite.(light burnt magnesia)(cinder ball) The caustic calcined magnesite is made from calcined magnesite powder through mixing, pressing spheroid, it is used for converter steel making, through the splashing cross to protect the furnace, which can raise the furnace life. If you have a try our product, you will get a great surprise! Spec.: MgO : 50-70% SiO2:7.0- 3.5% L.O.I.: 30%max CaO :6.0-2.0% density:1.6-2.0g/cm3 crushing force: <3.0KN moisture content : <3% apparent porosity: 20% Size: 20mm, 40mm, 60mm Packing: 1MT/Bag or As Per You Request Quantity: 5000MTS-8000MTS/Month