1. Hydraulic washing 
  2. Magnetic Separation
  3. Froth Floatation Method
  4. Leaching
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Option 3 : Froth Floatation Method

Froth Floatation Method is used for removing gangue from sulphide ores. This method employs a mixture of water and pine oil which is made to froth in a tank to separate sulphide ores.
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