Mekhanobr-Orgsintez-Reagent Ltd. (Russia):

Ryaboy V. I., Doctor of Engineering Sciences, General Director, frim@isc1.nw.ru

Mining Institute of the Far Eastern Branch of the Russian Academy of Sciences (Russia):

Shepeta E. D., Ph. D. in Engineering Sciences, Senior Researcher

Mekhanobr-Orgsintez-Reagent Ltd. (Russia):

Ryaboy I. V., General Director

Kvadrat-plyus CJSC (Russia):

Levkovets S. E., Deputy General Director

Kretov V. P., General Director

The effect of surface activity at liquid-gas interface and hydrophobization ability of dialkyldithiophosphates class reagents-collectors upon their flotation activity was qualitatively established. It is shown, that maximum recovery of sulfides is achieved with high hydrophobization ability and surface activity of reagents, and selectivity – with low hydrophobization ability and high or low surface activity, depending on the type of mineral selection. A highest recovery of metals was achieved in gold-bearing silver ore flotation with IMA-I207 reagent, possessing a highest surface activity. In separation of copper minerals from arsenopyrite, a highest selectivity was achieved with application of IMA-226 reagent, possessing a highest surface activity and lowest hydrophobization ability. In separation of copper-zinc ores, most selective is BTF-1522 reagent, characterized by the lowest hydrophobization ability and surface activity. BTF-1552 reagent and its analogue BTF-1532, introduced in coppernickel ores flotation, possess similar properties.

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