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Extraction of Iron

Coke is used ...

Question

Coke is used as a fuel and as a ___________ in smelting iron ore in a blast furnace.

A

oxidizing agent

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B

reducing agent

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C

catalytic poison

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D

None of these

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Solution

The correct option is B reducing agent
Coke is used as a fuel and as a reducing agent in smelting iron ore in a blast furnace. Burning coke gives CO. The ferric oxide ore is reduced to iron metal with CO.
$F e_{2} O_{3} + 3 C O \to 2 F e + 3 C O_{2} F e_{2} O_{3} + 3 C \to 2 F e + 3 C O$

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(b) Formation of

C O

{C O}_{2}

and coke reduces the temperature of the middle region of blase furnace.
(c) Limestone is taken blast furnace as flux.
(d) Silica present in the ore as gangue is converted to fusible slag by the process of reduction
Which of the following regarding the process of smelting is correct?

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