Studies on the recovery of tungsten from a composite ...
Nov 01, 2000· 1. Introduction. The chief economic minerals of tungsten are wolframite ((Fe, Mn) WO 4) and scheelite (CaWO 4).Tungsten ores are generally subjected to physical beneficiation techniques such as gravity, flotation, magnetic and electrostatic separation to obtain marketable grade mineral concentrates (60–70% WO 3).However, physical beneficiation of lowgrade tungsten ores having the ...