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Vol 210
Pages:
69
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The development of methods for increasing the efficiency factor of gravitation extraction for fine and ultrafine gold from different genesis placers

Authors:
T. N. Aleksandrova1
V. B. Kuskov2
About authors
  • 1 — Mineral Resources University (Mining University)
  • 2 — Mineral Resources University (Mining University)
Date submitted:
2014-07-08
Date accepted:
2014-09-08
Date published:
2014-12-22

Abstract

The basis for and results of experimental studies for increasing the efficiency factor of gravitation extraction for fine and ultrafine gold from geogenic and man-made mineral formations with high clay content as well as alluvial placers are presented. The clayey gold-bearing placers of the Khabarovsk region in Russia’s Far East were used as the subject of research. These placers contain a substantial amount of fine particle gold and muddy material with hard washability, which are the main reasons for gold losses. One more object of research is a placer located in the Krasnoyarsk region, east Siberia. A special method of interpretation has been created for particle size distribution, using newly developed software which can increase the accu-racy of sedimentation analysis and predict the morphology of gold. It has been proved that one of the most promising ways in which to intensify the gravity processes can be effective preparation, including the chemical dispersion of gold dust before gravitational processing. Exploring the joint effect of sodium hexapolyphosphate and halogen oxidant on the efficiency of processing revealed that the combination of the peptization-coagulation cycles improves gold recovery. Also, the possibility of using concentration tables with various designs for production of rough concentrate is shown. The use of a new round disk concentrated table design enables metallurgi-cal results to be improved in comparison with shaking tables.

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References

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  4. Кусков В.Б. Повышение эффективности разделения частиц за счет использования новых конструкций кон-центрационных столов / В.Б.Кусков, Я.В.Кускова // Записки Горного института. 2012. Т.196. С.132-135.
  5. Кусков В.Б. Испытания концентрационных столов различных типов / В.Б.Кусков, Я.В.Кускова, К.Е.Ананенко // Цветные металлы. 2012. № 10. С.28-32.
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  7. Патент № 2388546 РФ. Способ извлечения тонкодисперсного золота при обогащении золотосодержащих песков россыпных месторождений / Т.Н.Александрова, И.Ю.Рассказов, Н.М.Литвинова, Р.В.Богомяков. Опубл. 10.05.2010. Бюл. № 13.
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