The GATE Grind

GATE 2019 MT – Question 19

Mineral Processing and Extractive Metallurgy · Primary and secondary steelmaking · 1 mark · Multiple choice

Choose the correct steelmaking sequence. BOF: basic oxygen furnace; LF: ladle furnace; VD: vacuum degassing; CC: continuous casting.

  1. BOF → LF → VD → CC
  2. CC → BOF → LF → VD
  3. VD → CC → BOF → LF
  4. LF → BOF → VD → CC

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Show answer and explanation

Correct answer: (A) BOF → LF → VD → CC

Explanation

Primary steelmaking in BOF precedes ladle refining and adjustment in LF. Vacuum degassing removes dissolved gases before the final liquid steel is continuously cast. Thus A gives the intended process sequence; placing casting before liquid-metal refining reverses the production route.

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