The impurities are burnt from which material in an open hearth furnace to produce steel?(a) Cast iron(b) Gray iron(c) Pig iron(d) CopperThe question was asked at a job interview.Question is taken from Open Hearth Surface in section Metal Furnace and Practice of Casting-Forming-Welding II

The impurities are burnt from which material in an open hearth furnace

1.	The impurities are burnt from which material in an open hearth furnace to produce steel?(a) Cast iron(b) Gray iron(c) Pig iron(d) CopperThe question was asked at a job interview.Question is taken from Open Hearth Surface in section Metal Furnace and Practice of Casting-Forming-Welding II
Answer» Right ANSWER is (C) Pig iron The best I can EXPLAIN: The materials such as high carbon CONTENT or other impurities which are present INSIDE the pig iron are burnt in order to obtain steel.

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The impurities are burnt from which material in an open hearth furnace to produce steel?(a) Cast iron(b) Gray iron(c) Pig iron(d) CopperThe question was asked at a job interview.Question is taken from Open Hearth Surface in section Metal Furnace and Practice of Casting-Forming-Welding II

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