Question

Please give three to four ways of separating gangue from ores ?​

Answer 1

Mineral processing. Mineral processing, art of treating crude ores and mineral products in order to separate the valuable minerals from the waste rock, or gangue. It is the first process that most ores undergo after mining in order to provide a more concentrated material for the procedures of extractive metallurgy.

Answer 2

by
magnetic refining
elective refining
calcination
roasting