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GATE 2022 MT – Question 30

Mineral Processing and Extractive Metallurgy · Continuous casting · 1 mark · Multiple select

In continuous casting of steel, mould flux is used for ________

  1. lubrication
  2. reducing heat loss
  3. inclusion control
  4. reducing solidification shrinkage

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Show answer and explanation

Correct answer: (A) lubrication; (B) reducing heat loss; (C) inclusion control

Explanation

Flux lubricates the strand/mould interface, insulates the exposed molten surface and absorbs inclusions. It does not eliminate the intrinsic volume shrinkage of solidification.

Therefore **A,B,C**.