Mekhanobr-Orgsintez-Reagent CJSC (Russia):

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

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

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

«Kvadrat-plyus» CJSC (Russia):

Kretov V. P., General Director

JSC Polymetal Engineering (Russia):

Golikov V. V.,  Head of Department, Ph. D. in Engineering Sciences

BTF-1522, -1552, -163, -175 reagents-collectors and their certain analogues were synthesized and tested. Effects of their surface-active properties and hydrophobization ability upon flotation activity were studied. All reagents contained sodium dialkyldithiophosphates as one of their main components. Surface activity of the reagents' 1% water solution at liquid-gas interface (l-g) was determined by stalagmometric method with respect to all tested reagents, and regarding BTF-163, -1552, -152 reagents, surface tension of their water solutions was also determined as a function of concentration. Hydrophobization ability was estimated mostly qualitatively. It is shown, that in the range of the studied reagents, a stronger collector is characterized by a higher surface activity, and, correspondingly, a more selective collector — by a lower surface activity at liquid-gas interface. On the ground of this dependence, BTF-1522 is proposed to be applied in copper-zinc ore flotation as selective collector, BTF-1552 — in silver-bearing ores flotation, BTF-1532 — in copper-nickel ore flotation. BTF-163 is the strongest collector in copper and gold-bearing ores flotation. BTF-1522 and -163 reagents were brought into commercial practice.

1. Ryaboy V., Kretov V., Smirnova E. The usage of dialkyldithiophospates in flotation of sulphide ores. Proc. of XV Balkan Mineral Processing Congress, Sozopol, Bulgaria, June 12–16, 2013, Vol. 1, pp. 419–422.
2. Burger K. Organicheskiye reagenty v neorganicheskom analize (Organic reagents in inorganic analysis), Moscow, Mir, 1975, pp. 241, 245.
3. Pat. 4584095 US.
4. Ryaboy V. I., Zhivankov G. V., Shenderovitch V. A., Zlobin M. N., Zaskevitch M. N. Improvement of diamond recovery in froth separation of kimberlite ore with the help of flotation reagents. Proc. of XX International Mineral Processing Congress, Aachen, 1997, Vol. 3, pp. 437–445.