United States Steel said it plans to end steel production at its Granite City, Ill., mill and use the plant to produce pig iron.
Pig iron is reduced ore to form molten iron in a coal-heated blast furnace. When it is cooled, it can be mixed with scrap and melted into new steel in electric furnaces. raw iron supply is tight Since Russia’s invasion of Ukraine, shipments from both countries have been the world’s largest sellers of pig iron.