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MHT CET202014 Oct 2020Evening ShiftChemistryGeneral Principles and Processes of Isolation of MetalsActual

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

Options

  1. AIt enables the even distribution of charge.
  2. BTo blow a blast of preheated air in to the furnace.
  3. CIt is used to remove molten slag and iron.
  4. DIt prevents loss of hot gases.

Correct answer

B. To blow a blast of preheated air in to the furnace.

Step-by-step 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.

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