Center of Earth Sciences, Metallurgy and Ore Benefication:

Tusupbayev N. K., Head of Laboratory, Doctor of Engineering Sciences, nesipbay@mail.ru

Turysbekov D. K., Senior Researcher, Ph. D. in Engineering Sciences, dula@mail.ru

Syеmushkina L. V., Senior Researcher, Ph. D. in Engineering Sciences, syomushkina.lara@mail.ru
Мukhanova А. А., Junior Researcher

National Scientific Technological Holding «Parasat» (Republic of Kazakhstan), Academician of National Academy of Sciences of the Republic of Kazakhstan:

Bekturganov N. S., Scientific Consultant, Doctor of Engineering Sciences, n.bekturganov@parasat.com.kz

The results of studies on flotation slurry heating effect upon bulk copper-lead-zinc concentrate selective separation with application of modified mixed aerofloat in comparison with base butyl aerofloat are presented. Modified mixed aerofloat is a mixture of butyl aerofloat with fusel oil in a 1 : 3 ratio. Experiments proved that modified mixed aerofloat consumption, if compared with butyl aerofloat, is decreased by 10 g/t. With that, base metals recovery into bulk concentrate is increased by 1.5–3 %. The results of studies showed, that in bulk copper-lead-zinc concentrate selective separation with application of modified mixed aerofloat, flotation slurry heating is required only in copper concentrate separation cycle. At the temperature of +60 °С, copper concentrate was produced with copper mass fraction of 28.9 %, recovery being 68.5 %. With temperature increase, copper recovery into copper concentrate is increased by 13.7 % in open flotation circuit and by 6.1 % in closed flotation circuit. Increased temperature also permits to eliminate sodium sulfide from desorption process.

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