221 154 9

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Unformatted text preview: ................................ 221-154 –9– M01/420/H(3) Option E – Chemical industries E1. (a) State two functions of the coke fed into the blast furnace during the extraction of iron from iron ore. [2] ......................................................................... ......................................................................... ......................................................................... (b) The cast iron produced in the furnace contains the impurities carbon and silica. Describe how these impurities are removed to produce pure steel. (i) Carbon: [2] ..................................................................... ..................................................................... ..................................................................... (ii) Silica: [2] ..................................................................... ..................................................................... .....................................
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This note was uploaded on 05/02/2008 for the course CHEM 142,152,16 taught by Professor Unknown during the Spring '08 term at University of Washington.

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