Question

Which one of the following ores is best concentrated by gravity separation?

(a) copper pyrites (b) galena (c) iron pyrite (d) Haematite​

Answer 1

Answer:

This method is used when a higher ore contains impurities with higher density. This method is used for the concentration of Sulphide ores. (Eg: Copper pyrites, iron pyrites, Galena, Zinc blende etc.) Copper is mainly extracted from copper pyrites. After the concentration of its ore by froth flotation process, the ore is roasted in a current of air to remove arsenic, antimony and much of sulphur.

Answer 2

Explanation:

-Hematite ore is concentrated using the gravity separation process.