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ArticleName Methods of gold recovery during the concentration of refractory gold-bearing pyritic copper-zinc ores. Part 1. Analysis of practice and choice of ways of selective recovery of mineral phases of gold from pyritic copper-zinc ores
DOI 10.17580/tsm.2017.04.01
ArticleAuthor Bocharov V. A., Ignatkina V. A., Kayumov A. A.
ArticleAuthorData

National University of Science and Technology “MISiS”, Moscow, Russia:

V. A. Bocharov, Professor of a Chair of Concentration and Processing of Minerals and Technogenic Raw Materials
V. A. Ignatkina, Professor of a Chair of Concentration and Processing of Minerals and Technogenic Raw Materials
A. A. Kayumov, Post-Graduate Student of a Chair of Concentration and Processing of Minerals and Technogenic Raw Materials

Abstract

In this paper we analyzed the practical research and revealed the new factors affecting gold extraction from pyrite copper-zinc ores using combined processes of gravitation, flotation and hydrometallurgy. The relationships between gold extraction and phase composition of gold associations (native free, intergrowths with pyrite and other minerals) were established and analyzed. The gold extraction into gravitation and flotation products is shown to be mostly defined by extraction of gold-bearing pyrite into them. Successive opening of polymineral complexes in inter-cycled extraction with technological scheme opening at a number of Russian factories made it possible to improve the results of refractory pyrite copper-zinc ores separation operations. We also studied the experience of processing of Russian and foreign pyrite products using extraction and chemical leaching. New data was collected on extraction of mineral gold phases depending on the degree of selective detection of polymineral sulfide associations. With examples of many technological researches, the relationships between gold extraction, the “refractory” degree of gold and the ratio of free gold fractions in sulphides intergrowth are shown. Gold extraction during the pyrite products cyanidation depends on two major factors: the depth of mineral associations opening; and the phase composition of gold. These factors in their turn can be defined by a number of other factors: size and nature of mineral complexes intergrowths; the output of sludge; the nature of surface oxide films on the gold particles; temperature and duration of contact with mixture; concentration of solvent and oxidizer; other technological factors. The ways to increase gold extraction from pyrite ores on a basis of deep selective minerals opening were defined.
This work was carried out with the financial support of the Russian Foundation for Basic Research, project No. 17-05-00890, Russian Science Foundation, project No. 14-17-0039.

keywords Gold, pyrite, gravitation, flotation, cyanide leaching, flotation agents, modifiers, minerals, combined technologies.
References

1. Bocharov V. A., Ignatkina V. A., Chanturiya E. L., Yushina T. I., Kayumov A. A. Technologies of complex processing of refractory pyritic ores and pyrite technogenic products with extraction of non-ferrous and rare metals. Tsvetnye Metally. 2016. No. 9. pp. 8–12.
2. Bocharov V. A., Ignatkina V. A., Abryutin D. V. Technology of processing of gold-bearing raw materials. Moscow : Izdatelskiy dom MISiS, 2011. 326 p.
3. Technology of concentration of copper and copper-zinc ores of the Urals. Ed.: V. A. Chanturiya, I. V. Shadrunova. Moscow : Nauka, 2016. 386 p.
4. Bocharov V. A., Kuligin S. A., Filimonov V. N. State and prospects of concentration of copper and copper-zinc ores of the Urals. Collection of scientific proceedings. Gintsvetmet. Moscow : TSNIItsvetmet ekonomiki i informatsii, 1971. pp. 14–20.
5. Ignatkina V. A., Bocharov V. A. Complex dressing of pyrite gold-bearing ores of non-ferrous metals. Tsvetnye Metally. 2007. No. 8. pp. 18–28.
6. Bocharov V. A., Pospelov N. D., Tomova I. S. Concentration of copper-zinc ores abroad. Moscow : TsNIItsvetmet ekonomiki i informatsii, 1980. 75 p.
7. Lodeyshchikov V. V. Technology of gold extraction from refractory ores. In two volumes. Irkutsk, 1999. Vol. 2. 452 p.
8. Sedelnikova G. V. Global practice of processing of refractory gold-sulfide concentrates and ores. Progressive methods of concentration and complex processing of natural and technogenic mineral raw materials (Plaksin readings – 2014) : materials of conference. Karaganda : Izdatelstvo TOO “Arko”, 2014. pp. 34–38.
9. Khabarov V. V., Zabelskiy V. I., Vorobev D. E. Progressive technologies of mining and processing of gold-bearing raw materials. Moscow : Nedra, 1994. 196 p.
10. Gazaryan L. M. Practice of extraction of noble metals from flotation tails of copper-zinc ores and pyrite concentrates on Canadian factories. Tsvetnye Metally. 1969. No. 11. pp. 88–93.
11. Xianwen Dai, Andrew Simons, Paul Breuer. A review of copper cyanide recovery technologies for the cyanidation of copper containing gold ores. Minerals Engineering. 2012. Vol. 25, No. 1. pp. 1–13.
12. Konigsmann K. V. Mettagami Lake Klines Ltd. Canadian Mining Journal. 1969. Vol. 90, No. 6. pp. 62–65.
13. Kontopoulos A., Stefanakis M. Process selection for the Olimpias refractory gold concentrate. Precious Metals'89: Proceedings of International Symposium of TMS Annual Meeting (27 February–2 March, Las Vegas, Nevada, 1989). Warrendale (Pa), 1989. 123 p.
14. Lucion Ch., De Cuyper J. Preprocessing of a cyanided gold calcine. XVII International Mineralogy Processings Congress 23–28 May 1993. The Australian Institute of Minerals and Metallurgy. Sydney, 1993. pp. 1129–1135.
15. Shcherbakov V. A. Technology of concentration of non-ferrous and noble metal ores on Canadian factories. Tsvetnye Metally. 1983. No. 6. pp. 103–106.
16. Henley K. J. A review of recent developments in the process mineralogy of gold. Extraction of Metallic Gold and Base Metals : Proceedings of International Conference of Extraction of Metallic Gold and Metals, Kalgoorlie, October 26–28, 1992. Melbourne, 1992. pp. 177–194.
17. Lorenzen L., Van Deventer J. S. J. The mineralogical identification of refractory gold ores by means of the selective decomposition of minerals. Extraction of Metallic Gold and Base Metals. Melbourne, 1992. pp. 171–176.
18. Kennedy A. Olympic dam project. Mining Magazine. 1988. November. pp. 330–344.
19. Laxen P. A., Becker G. S. M., Rubin R. Developments in the application of carbon-in-pulp to the recovery of gold from South American ores. Journal of South African Institute of Mining and Metallurgy. 1979. Vol. 79. No. 11. pp. 315–326.
20. Bocharov V. A., Ignatkina V. A. The analysis of modern directions for all-round utilization of base metals refractory ores. Obogashchenie Rud. 2015. No. 5. pp. 46–53.
21. Simmons G. L. Development of low-temperature pressure oxidation at Lone Tree. Mineral and Metallurgical Process. 1994. Vol. 11, No. 2, pp. 74–79.
22. Chanturiya E. L. Flotation fractioning of gold-bearing pyrite with obtaining of various quality products. Gornyy Informatsionno-Analyticheskiy Byulleten. 2006. No. 5. pp. 339–346.
23. Kiselev M. Yu. Investigation of regularity of electrochemical chlorination gold extraction from sulfide products : Dissertation ... of Candidate of Engineering Sciences. Ekaterinburg, 2012.
24. Sedelnikova G. V., Kurkov A. V., Smirnov P. M. Autoclave oxidation of refractory gold-sulfide concentrates in Russian Federation. Theory and practice of recent five years. Tsvetnye Metally. 2016. No. 8. pp. 25–32. DOI: 10.17580/tsm.2016.08.03.
25. Leppinen J. O., Bacilio С. I., Yoon R. H. FTIR Study of thionocarbamate adsorption on sulfide minerals. Colloids and Surfaces. 1988. Vol. 32, No. 1/2. pp. 113–125.
26. Fairtorne G., Fornasiero D., Ralston J. Interaction of thionocarbamate and thiourea collectors with sulphide minerals a flotation and adsorption study. International Journal of Mineral Processing. 1997. Vol. 50, No. 4. pp. 227–242.

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