... ,85,90,92,95 etc We supply graphite carburetant,carbon additive.used for steel-smelting,casting and friction material.We supply ... -smelting,casting and friction material. Calcined Anthracite Coal Carbon Additive 1. Features: Calcind Anthracite Coal Carbon Additive from Ghigh Carbon.Calcined anthracite is produced ... /30kgs in one MT-bag or on one pallet. CARBON ADDITIVE FOR IRON AND STEEL FACTORY