The GATE Grind

GATE 2023 MT – Question 48

Mineral Processing and Extractive Metallurgy · Ironmaking · 2 marks · Multiple select

Which of the following is/are the role(s) of coke in a blast furnace?

  1. reducing agent
  2. heat source
  3. gas permeable medium
  4. flux

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Show answer and explanation

Correct answer: (A) reducing agent; (B) heat source; (C) gas permeable medium

Explanation

Coke supplies carbon/reducing gas, releases heat through combustion, and forms a mechanically strong permeable skeleton for ascending gas. It is not the flux used to control slag chemistry.

Therefore **A,B,C**.