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By Calcination And Smelting Iron Ores A Crude And Impure Form Of Iron Obtained Is Known As

The slag is in molten state and separates out from iron.The iron obtained from blast furnace contains about 4 carbon and many impurities in smaller amount e.G., s, p, si, mn.This is known as pig iron and cast into variety of shapes.Cast iron is made by melting pig iron with scrap iron and coke using hot air blast.It has carbon content of.

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