Journals →  Tsvetnye Metally →  2017 →  #6 →  Back

BENEFICATION
ArticleName The choice of methods of gold-arsenic ores processing (Novotroitsk deposit) taking into account their technological peculiarities
DOI 10.17580/tsm.2017.06.05
ArticleAuthor Strukov K. I., Plotnikov S. N., Zyryanova L. A., Nikolaev Yu. L.
ArticleAuthorData

Gold mining company UGC, Chelyabinsk, Russia:

K. I. Strukov, President
S. N. Plotnikov, Chief Dresser, e-mail: s.plotnikov@ugold.ru
L. A. Zyryanova, Deputy Head of Assay Laboratory

 

JSC “Irgiredmet”, Irkutsk, Russia:
Yu. L. Nikolaev, Senior Researcher of the Laboratory of Metallurgy

Abstract

The Novotroitsk gold deposit ores, located in the South Urals, are relatively low in gold and silver and, at the same time, are characterized by increased technological refractory. The technological and economic feasibility of their processing is determined by the effectiveness of flotation dressing, during which the bulk of the refractory gold is extracted into the flotation concentrate. Only such a product of dressing is subject to efficient and cost-effective processing using minerals disclosure methods followed by cyanidation, allowing to achieve the required recovery of valuable components. The required extraction of gold from such ores and their concentrates can not be achieved without the complete minerals disclosure of the sulphide matrix and elimination of the natural sorption activity of these materials. As is known, such technologies as bacterial oxidation effectively oxidize sulphides (mainly arsenic pyrite) but not only unblock the sorption-active carbonaceous matter, but also activate it to a certain extent. For industrial realization of oxidizing roasting, input control of mineral materials for two elements — arsenic and sulfur — is highly desirable. Such control can be carried out easily and expressly using an X-ray spectral analyzer and allows you to pre-set the firing conditions and the total duration of the process for the specific content of the sulfides to be oxidized, i. e. to conduct the process in a mode close to the optimum. Proceeding from the peculiarities of the material composition of the Novotroitsk deposit, the optimal mode of thermochemical oxidation of the flotation concentrate determine a three-stage firing, in which sequential dearsenation, desulfurization and decarbonization are carried out to the fullest extent. In connection with the growth of the refractory goldbearing raw material in the composition of the raw material base of the gold mining company UGC, the application of this approach to its processing is becoming increasingly important and is the key to the growth of gold production at all operating enterprises, increasing the extraction of precious metals and, in general, the quality of underground development. At the same time, special attention is paid to the creation of environmentally balanced technologies that provide an acceptable level of environmental impact, including the living conditions of people in mining regions.

keywords Gold-arsenic ores, pyrite, arsenopyrite, flotation, oxidizing roasting, “coal in pulp”, process, extraction, cost-effective processing, environmental safety, industrial safety
References

1. Lodeyshchikov V. V. Technology of gold and silver extraction from refractory ores. In two volumes. Volume 1. Irkutsk : Irgiredmet, 1999. 342 p.
2. Bin Xu, Yongbin Yang, Qian Li, Tao Jiang, Shiqian Liu, Guanghui Li. The development of an environmentally friendly leaching process of a high C, As and Sb bearing sulfide gold concentrate. Minerals Engineering. 2016. Vol. 89. pp. 138–147.
3. Oraby E. A., Eksteen J. J. The leaching of gold, silver and their alloys in alkaline glycine-peroxide solutions and their adsorption on carbon. Hydrometallurgy. 2015. Vol. 152. pp. 199–203.
4. Manning T. J. Heap Leaching of Gold and Silver Ores. Gold Ore Processing. Second Ed. NV, USA : Project Development and Operations, 2016. pp. 413–428.
5. Petersen J. Heap leaching as a key technology for recovery of values from low-grade ores — A brief overview. Hydrometallurgy. 2016. Vol. 165, Part 1. pp. 206–212.
6. Brierley J. A. A perspective on developments in biohydrometallurgy. Hydrometallurgy. 2008. Vol. 94, No. 1–4. pp. 2–7.
7. Watling H. R. The bioleaching of nickel-copper sulfides. Hydrometallurgy. 2008. Vol. 91, No. 1–4. pp. 70–88.
8. Laxen P. A. Carbon-in-pulp processes in South Africa. Hydrometallurgy. 1984. Vol. 13, No. 2. pp. 169–192.
9. Mudd G. M. Global trends in gold mining: Towards quantifying environmental and resource sustainability. Resources Policy. 2007. Vol. 32, No. 1–2. pp. 42–56.
10. Rylnikova M. V., Radchenko D. N. Creating research center for the environmentally sound and comprehensive utilization of hard minerals in Russia. Gornyi Zhurnal. 2014. No. 12. pp. 4–7.
11. Strukov K. I., Patskevich P. G., Nikiforov K. I. Complex system of mo nitoring — the way to creation of energy-efficient ecologically ba lanced geotechnologies of mastering the deposits of multicomponent ores of the South Urals. Problems of mastering the soils in the XXI century from the point of view of the youth. Materials of the 13-th International scientific school of young scientists and specialists. Moscow : IPKON RAN, 2016. pp. 135–138.
12. Rylnikova M. V., Radchenko D. N., Milkin D. A., Zvyagintsev A. G., Peshkov A. M. The justification for parameters and the regime of leaching of raw materials of technogenic formations during copper-sulphide mining. Gornyy informatsionno-analiticheskiy byulleten. 2010. No. 3. pp. 340–350.
13. Golik V., Komashchenko V., Morkun V. Feasibility of using the mill tailings for preparation of self-hardening mixtures. Metallurgical and mining industry. 2015. Vol. 7, No. 3. pp. 38–41.
14. Zoteev O. V., Kalmykov V. N., Gogotin A. A., Prodanov A. N. Framework of procedure to select technology of ore processing waste storage in undermined open pits and caving zones. Gornyi Zhurnal. 2015. No. 11. pp. 57–61. DOI: 10.17580/gzh.2015.11.11
15. Kaplunov D. R., Rylnikova M. V., Radchenko D. N., Korneev Yu. V. Mobile stowing complexes in the systems of development of ore deposits with mined-out areas stowing. Gornyi Zhurnal. 2013. No. 2. pp. 101–104.
16. Kaplunov D. R., Radchenko D. N. Mined-out areas: Approaches to multipurpose use in complete integrated cycle of hard mineral mining. Gornyi Zhurnal. 2016. No. 5. pp. 28–33. DOI: 10.17580/gzh.2016.05.02
17. Radchenko D. N., Lavenkov V. S., Gavrilenko V. V., Emelyanenko E. A. Joint recycling of mineral dressing and chemical production waste in integrated multi-component ore mining. Gornyi Zhurnal. 2016. No. 12. pp. 87–93. DOI: 10.17580/gzh.2016.12.18
18. Kaplunov D. R., Rylnikova M. V., Radchenko D. N. Expansion of raw materials base of mining enterprises on the basis of complex usage of mineral resources of deposits. Gornyi Zhurnal. 2013. No. 12. pp. 86–90.
19. Kaplunov D. R., Rylnikova M. V., Radchenko D. N. Conditions of stable development of mineral resource complex of Russia. Gornyy informatsionno-analiticheskiy byulleten. 2014. No. S1-1. pp. 3–11.

Language of full-text russian
Full content Buy
Back