A blast furnace input is a combination of materials used to create iron. Ores, ORE, SLAG, smelter, smelts, COKE, and ironore are all components of a blast furnace input. Ores are rocks or minerals from which a metal or valuable mineral can be extracted. ORE is a rock or mineral from which a metal or valuable mineral can be extracted. SLAG is the by-product of smelting ORE. A smelter is a furnace used for smelting, which is the process of melting ORE to separate out the metal. Smelts are the molten metal produced by smelting ORE. COKE is a fuel made from coal that is used in blast furnaces. Ironore is a type of ORE that contains iron.