Question:
The dead-man zone in a blast furnace mainly consists of:
The dead-man zone in a blast furnace mainly consists of:
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Dead-man zone = stagnant coke bed supporting liquid drainage in furnace hearth.
Updated On: Jun 29, 2026
- Molten slag
- Molten iron
- Undissolved solid coke particles
- Reduced iron fines
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The Correct Option is C
Solution and Explanation
Concept:
The dead-man zone is the central region at the bottom of a blast furnace where:
- coke particles are relatively stagnant
- minimal movement occurs
- acts as a porous coke bed supporting liquid flow
Step 1: Understand furnace zones.
In the hearth: - molten iron and slag flow downward - coke remains relatively solid and stationary
Step 2: Nature of dead-man zone.
It consists primarily of: - large coke particles - undissolved solid carbon structure
Step 3: Evaluate options.
(A) slag → liquid phase, not stagnant structure (B) iron → molten, flows out (C) coke particles → correct (D) iron fines → not stable phase here Final Answer: \[ \boxed{\text{Undissolved solid coke particles}} \]
Step 1: Understand furnace zones.
In the hearth: - molten iron and slag flow downward - coke remains relatively solid and stationary
Step 2: Nature of dead-man zone.
It consists primarily of: - large coke particles - undissolved solid carbon structure
Step 3: Evaluate options.
(A) slag → liquid phase, not stagnant structure (B) iron → molten, flows out (C) coke particles → correct (D) iron fines → not stable phase here Final Answer: \[ \boxed{\text{Undissolved solid coke particles}} \]
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