Question

Gravity separation process is used for the concentration of ________ .

1. Haematite

2. Chalcopyrite

3. Bauxite

Choose the correct one from the given options.

Answer 1

1. Haematite

Gravity separation technique is used where iron ore (hematite) bearing minerals are free from associated gangue materials. The specific gravity of iron-bearing minerals is usually higher than the specific gravity of gangue materials. Effectiveness efficiency of the gravity separation depends largely on proper crushing and sizing of the ore so as to ensure a proper size feed to the gravity separation equipment and also removal of slime from the equipment.