Q1 / 150 · MHT CET 2020 (14 Oct Shift 2) · Chemistry

What is the role of tuyers used in blast furnace for extraction of iron?

A
It enables the even distribution of charge.
Correct answer
B
To blow a blast of preheated air in to the furnace.
C
It is used to remove molten slag and iron.
D
It prevents loss of hot gases.

Solution

Near the base, the furnace is provided with pipes called tuyeres for supplying a hot blast of air, a tapping hole for molten iron and a slag hole through which slag flows out. There is an outlet near the top of the waste gases. Near the tuyeres, carbon burns to give carbon dioxide producing a lot of heat.

Hence, the correct answer is option: 'B'.

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