Current Studies of Separating Quartz from Feldspar through Flotation without Fluoride

This article has summed up the current researches on separating quartz from feldspar through flotation with no-fluoride, and analyzed the mechanism that causes the differences of floatability between quartz and feldspar in these several processes. The results have indicated that the most widely used process without fluoride of separating quartz from feldspar is feldspar-flotation in acidic condition at present, while the most promising process is flotation in neutral or alkali condition.