Multiple choice

Sulphide ores are generally concentrated by

  1. Hydraulic washing

  2. Electro magnetic separation

  3. Froth floatation process

  4. Chemical Method
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This process is generally used for the concentration of sulphide ores. In this method the ore is taken in an iron tank along with a mixture of water and pine oil. The mixture is vigorously agitated by blowing compressed air. The oil forms a froth with air. The metallic ore particles get stick to the forth and rise to the surface as scum.The impurities are wetted by water and will settle down at the bottom .The froth containing the metallic ore particles is skimmed off and dried.

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