12th Class Chemistry Metallurgy / धातुकर्म Question Bank 12th CBSE Chemistry Metallurgy

  • question_answer
      What is Ellingham diagram? What ore its limitations?

    Answer:

      7.            Wrought iron is prepared from cast iron by oxidising  impurities in reverberatory furnace lined with iron oxide which oxidises carbon to carbon monoxide. Limestone is added as a flux and sulphur, silicon and phosphorus are oxidised and passed into the slag. The metal is and freed from the slag by passing through rollers.


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