A BRIEF SUMMARY OF THE DEVELOPMENT OF THE SPONGE IRON PROCESS

Iron ore, when subjected to reducing gases at a temperature suitable for reduction of the oxide but not high enough to melt the ore or metal formed, is converted into metallic iron. The product, being the original piece of iron oxide minus its oxygen, is sponge-like in appearance when viewed under a magnifying glass, and hence is called 'sponge iron.
Keywords: carbon monoxide, iron oxides, open-hearth furnace, sponge iron, U.S. Bureau of Mines, Coal, Furnaces, Iron, Ore, Ores, Oxide, Reduction, Sponge iron, Temperature
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