The GATE Grind

GATE 2024 MT – Question 18

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

Which one of the following reagents is NOT used in froth flotation process?

  1. Lixiviants
  2. Collectors
  3. Activators
  4. Depressants

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Show answer and explanation

Correct answer: (A) Lixiviants

Explanation

Collectors promote mineral hydrophobicity, activators improve collector adsorption, and depressants suppress flotation of selected minerals.

Lixiviants dissolve valuable components during leaching rather than flotation.

Therefore **lixiviants, A**.