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    Posted 4 years ago in Form 3

    METALS

    Why in extrion of iron COKE is necessary to used?.How is calcium obtained in the blust furnancce{two ways} and its roles?.What is the role of hot air in blust furlnance?

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    Bantheny De Quizy   Posted on 4 years ago

    Coke is important because it is used to form carbon dioxide which is reduced to carbon monoxide which is used to reduce iron ore to iron
    Calcium is obtained from marble chips its role is to provide calcium oxide which is used to remove impurities from the ores
    Hot air is used to form carbon dioxide that is used to produce carbon monoxide that is useful in reducing iron ore to iron

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