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ArticleName Dithiophosphates collecting ability estimation and its relationship to selectivity of valuable component recovery
DOI 10.17580/or.2015.03.04
ArticleAuthor Kondratyev S. А., Ryaboy V. I.

Chinakal Institute of Mining of the Siberian Branch of the RAS (Russia):

Kondratyev S. А., Doctor of Engineering Sciences, Head of Laboratory,


Mekhanobr-Orgsintez-Reagent Ltd. (Russia):

Ryaboy V. I., Doctor of Engineering Sciences, Professor, General Director,


A collecting ability of desorbed form (DS-form) of a number of higher dialkyldithiophosphates has been considered. The task of liquid removal from interlayer between bubble and mineral particle is solved numerically. It is shown, that main force, acting on liquid in interlayer, is conditioned by variations in surface tension, brought about at the moment of local rupture, and by surface pressure of molecules in film. Flotation reagent DS-form collecting ability is determined as a measure of its effect upon volume of liquid in interlayer. A comparative analysis of dialkyldithiophosphates collecting ability and dynamic surface activity values sequences of variations has been performed. A correlational relationship between the above mentioned values has been established. A relationship between volumetric rate of flow of liquid, flowing from interlayer, and interfacial tension of reagent forms, active on «gas-liquid» interface, is presented. A method of reagent collecting ability estimation by magnitude of force, acting from the side of reagent DS-form film upon liquid in interlayer, is proposed. Kinetics of the elementary act of flotation, determining selectivity of valuable component recovery, are established.

The studies were performed with the aid of the Russian Foundation for Basic Research Grant No. 13-05-00384.

keywords Flotation, reagent flotation activity, surface tension, interlayer of liquid, lubricity theory equations, physical form of sorption, selectivity

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