Question:

Froth Floatation method is mostly used for concentration of

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Sulphides = Floatation; Oxides = Gravity/Leaching; Magnetite = Magnetic separation.
  • Carbonate Ores
  • Sulphide Ores
  • Magnetic Ores
  • Oxide Ores
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The Correct Option is B

Solution and Explanation

Step 1: Concept
Froth flotation relies on the difference in surface hydrophobicity between minerals and gangue.

Step 2: Meaning

Collecters are added to make specific minerals water-repellent so they attach to air bubbles and float.

Step 3: Analysis

Sulphide minerals (like Galena or Chalcopyrite) are naturally more amenable to floatation than most oxides or carbonates.

Step 4: Conclusion

Sulphide ores are the most common industrial application for the froth flotation process. Final Answer: (B)
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