Mirny Polytechnic Institute–Division of the Ammosov North-Eastern Federal University, Mirny, Russia

T. I. Intogarova, Associate Professor, Candidate of Engineering Sciences, tatyana.intogarova@mail.ru

Ural State Mining University, Yekaterinburg, Russia
Yu. P. Morozov, Professor, Doctor of Engineering Sciences
I. V. Uporova, Research Engineer

The modern pace of industrial development calls for persistent improvement of ore processing performance. On the other hand, the quality of beneficiation feedstock incessantly degrades, and concentration circuits increasingly more operate with lower grade and refractory ore. This problem is incidental to sulfide ore flotation with highly complex processing flowsheets. In this connection, one of the critical current challenges in the field of mineral processing is improvement of flotation technology by way of introduction of the advanced and highly efficient flowsheets and processes. A promising trend in flotation technology improvement is stimulation of secondary concentration of minerals in flotation foam by sprinkling the foam surface with a cleansing agent or two-phase foam. In case of the stimulated secondary concentration of minerals by the two-phase foam sprinkling, the consumption and stability of the two-phase foam should ensure the required life time of the foam, on the one hand, and the fast release of the liquid phase, on the other hand. It is possible to provide such conditions by adjustment of the dispersiveness of the two-phase foam. Addition of the large-bubble foam with the fine disperse bubbles increases the water content of the two-phase foam before its feed in the flotation foam. It is experimentally proved that addition of electrolytic gases in the two-phase foam, in amount to 0.5 % of the total volume of gas phase reduces stability and increases dispersiveness of the two-phase foam. It is expected that this can contribute to stimulation of secondary concentration of minerals in flotation foam.

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