... ,Low sulfur,Low ash 3.High absorptivity in molten steel Casting and Steelmaking Calcined anthracite coal/carbon addtiveFeatures: The main raw ... being used as the carbon additive of steel-smelting, and casting, the fixed carbon may achieve above 95%. Application: It may ... 50kgs or 1MT big bag, or at customer’s option; Casting and Steelmaking used Calcined anthracite coal/carbon addtive