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The extraction of iron from its ores takes place in the blast furnace. Below is a simplified diagram of a blast furnace. Study it to answer the questions that follow.
(a) Name:
(i) One of the substances in the slag.
(ii) Another iron ore material used in the blast furnace.
(iii) One gas which is recycled.
(b) Describe the processes which lead to the formation of iron in the blast furnace.
(c) State the purpose of limestone in the blast furnace.
(d) Give a reason why the melting point of the iron obtained from the blast furnace is# 1200^0C# while that of pure iron is #1535^0C#.
(e) State two uses of steel. Manufacture of: