Question

Gravity separation process is used for the concentration of (1) calamine (2) haematite (3) chalcopyrite (4) bauxite

Answer 1

Gravity Separation or Hydraulic Washing (Levigation)

This method of concentration of the ore is based on the difference in specific gravities of the metallic ore and gangue particles. Generally metal ores are heavier than the gangue associated with them. ... For this, either wilfley table or Hydraulic classifier is used.

Answer 2

Answer:

haematite

Explanation:

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