The GATE Grind

GATE 2023 MT – Question 18

Mineral Processing and Extractive Metallurgy · Ironmaking · 1 mark · Multiple choice

The gas distribution in a blast furnace is controlled by the shape of

  1. Cohesive zone
  2. Deadman zone
  3. Raceway zone
  4. Chemical reserve zone

Practise this question in The GATE Grind →

Show answer and explanation

Correct answer: (A) Cohesive zone

Explanation

Softening and melting burden forms a low-permeability cohesive zone. Its shape determines accessible coke slits and therefore strongly redistributes ascending gas through the furnace.

Hence **cohesive zone, A** is the controlling zone in the question.