JSC “UK “Petropavlovsk”, Moscow, Russia:

V. K. Fedorov, Head of Perspective Development Department

LLC “Scientific-Research Center “Gidrometallurgiya”, Saint-Petersburg, Russia:

Ya. M. Shneerson, General Director, Professor, Doctor of Technical Sciences
М. V. Klementiev, Deputy Director of Project Support and Implementation
I. V. Fomenko, Research Director, Candidate of Technical Sciences, e-mail: fomenko-i@gidrometall.ru

JSC “Pokrovskiy rudnik”, Tygda, Amur region, Russia:

А. V. Afanasiev, Deputy Director – Chief of the Pokrovskiy POX Hub

Pokrovskiy pressure oxidation hub (POX hub) JSC “Pokrovskiy rudnik” is part of the Petropavlovsk, which is one of the largest gold mining companies in Russia. Pokrovskiy POX hub was designed to extract gold from sulfide concentrates by resin in pulp cyanidation after pre-oxidation in the autoclave. This article briefly describes the main stages of the Pokrovskiy POX hub project, the features of commissioning and rump-up of the technology of pressure oxidation of gold-bearing double refractory materials. The design capacity by the processed concentrate of one autoclave was achieved during first month of operation. Main indicators of autoclave technology are presented and discussed in this paper. The paper also contains: characteristics of the operation of the main equipment, discussion of technical and technological difficulties of the start-up period, and their influence on the main technological indicators. The problems were quickly resolved by local stuff with support of other subdivision of Petropavlovsk.

1. Shneerson Ya. М., Chugaev L. V., Lapin A. Yu., Klementiev M. V., Pleshkov М. А. Autoclave technologies come to the gold mining industry in Russia. Zoloto i tekhnologii. 2012. No. 2. pp. 86–89.
2. Zaytsev P., Shneerson Y., Fedorov V., O’Callaghan J., Haakana T., Kaartti A. Pokrovskiy pressure oxidation (POX) hub. Proc. ALTA 2013 Gold Sessions. Perth, 2013. pp. 33–71.
3. Shneerson Ya. M., Chugaev L. V. Pressure oxidation of double refractory gold bearing sulphide Concentrates. Tsvetnye Metally. 2019. No. 8. pp. 55–66.
4. Filyanin G. А., Vorobev-Desyatovskiy N. V. Amursk hydrometallurgical plant is a key element of processing unit of Far Eastern “Polymetal” JSC. Tsvetnye Metally. 2014. No. 6. pp. 29–36.
5. Connelly D. Finding a solution for a double refractory gold ore. Proc. ALTA 2017 Gold Sessions. Perth, 2017. pp. 37–59.
6. L. V. Chugaev, Ya. М. Shneerson, А. Yu. Lapin. Autoclave technology in the gold mining industry. Zoloto i tekhnologii. 2014. No. 3. pp. 36–40.
7. Yeonuk Choi. Selecting the best process for the treatment of a refractory gold ore — Barrick’s experience. Proc. ALTA 2016 Gold Sessions. Perth, 2016. pp. 2–34.
8. Fomenko I., Zaytsev P., Pleshkov M., Chugaev L., Shneerson Y. Pressure oxidation of double refractory gold concentrates. Proc. ALTA 2013 Gold Sessions. Perth, 2013. P. 72–84.
9. Fomenko I. V., Pleshkov М. А., Chugaev L. V., Shneerson Ya. М. The mechanism of the formation of gold losses during autoclave oxidation and the subsequent cyanidation of double refractory concentrates. Collection of reports of the IV International Congress “Tsvetnye metally – 2012”. Krasnoyarsk, 2012. pp. 590–597.
10. Sedelnikova G. V., Kurkov A. V., Smirnov K. M. Autoclave oxidation of refractory gold sulfide concentrates in the Russian Federation. Theory and practice of the last five years. Tsvetnye Metally. 2016. No. 8. pp. 25–32.
11. Karekivi P. The Kittila processing plant — step-by-step increasing recoveries. 8^th Fennoscandian Exploration and Mining (FEM 2011). Rovaniemi, 1–3 November 2011.
12. Shepelevich А. V., Obraztsova О. V. LLC TD Pressmash in the field of ore dressing: autoclave leaching, packs, thickeners. Zoloto i tekhnologii. 2012. No. 4. pp. 22–25.
13. Edahbi M., Mermillod-Blondin R., Plante B., Benzaazoua M. CIL Gold Loss Characterization within Oxidized Leach Tails: Creating a Synergistic Approach between Mineralogical Characterization, Diagnostic Leach Tests, and Preg-Robbing Tests. Minerals. 2019. Vol. 9, No. 9. P. 557.