Сassiterite flotation
Abstract
The extraction of cassiterite from ores by flotation, despite numerous attempts, remains an unresolved problem in practice. The presented results convincingly show the following. Activation of cassiterite with hydrosulfites significantly increases the flotation activity of the mineral. High tin recovery into the concentrate is achieved at collector dosages lower than usual in flotation. The flotation rate of activated cassiterite does not differ from the flotation rate of sulfides under optimal reagent schemes. One of the tasks for subsequent research should be the selection of a collector more effective for activated cassiterite. The extraction of cassiterite from ores by flotation remains an unresolved problem in practice. Numerous proposals for the flotation of tin stone described in the literature (1936) have not found industrial application due to technological and economic difficulties. Tests of the method of preliminary activation of cassiterite proposed by Prof. K. F. Beloglazov have shown that the use of activation significantly increases the floatability of cassiterite. Flotation of the activated mineral from synthetic mixtures with quartz proceeds even at collector dosages lower than usual, with a flotation rate normal for sulfides.
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