| Annotation |
Reducing the loss of valuable components during the processing of complex
gold-antimony ores, increasing the extraction of antimony during the flotation of sulfide
minerals, is an urgent scientific problem. The aim of the study is to maximize the
extraction of gold and antimony from dry sorption waste after gold cyanidation, and
to improve the reagent regime of the antimony mineral flotation process. Research
objectives are as follows: evaluation of the technology efficiency for processing dry
sorption waste; extraction of gold from the cake of acidic leaching of antimony; production
of various antimony-containing products from solutions of antimony chlorides;
study of the possibility of replacing lead with a mixture of zinc and copper cations to
hydrophobize the surface of antimony sulfide minerals during flotation. The object
of the research is man-made and natural mineral raw materials containing gold and antimony. The following research methodology and methods are used: information
analysis, evaluation of existing scientific developments, methods of theoretical and
experimental research. A new technological solution has been proposed: acidic (a
mixture of hydrochloric acid and hydrogen hydroxide) hydrometallurgical technology
for processing dry sorption waste in order to extract gold and antimony. Acid treatment
makes it possible to completely transfer antimony into solution, significantly improves
the quality of the cake for subsequent cyanidation and gold extraction, reduces
the volume of material for processing by cyanidation, and simplifies cyanidation
technology. Sb2S3 activation and the possibility of lead (Pb(NO3) replacement have
been studied 2) a mixture of zinc and copper (ZnSO4 and CuSO4) during the flotation
of antimony ores from the Khipkoshinsky deposit in the Transbaikal Region. This has
made it possible to create favorable conditions for interaction with xanthogenate and
hydrophobize the surface of sulfide minerals. Theoretically, hydrogen sulfide substitutes
such as NaCNS, KCNS, CuCNS for use in the flotation process were evaluated. |
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