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Kola MMC JSC: on the way to new technologies
ArticleName Developing a process for processing the magnetic matte fraction at Kola MMC
DOI 10.17580/tsm.2019.11.03
ArticleAuthor Chetverkin A. Yu., Khomchenko О. А., Vergizova T. V., Dubrovskiy V. L.

Institute Gipronikel LLC, Saint Petersburg, Russia:

A. Yu. Chetverkin, Researcher at the Hydrometallurgy Laboratory, e-mail:

T. V. Vergizova, Lead Researcher at the Hydrometallurgy Laboratory, Candidate of Chemical Sciences


Kola Mining and Metallurgical Company JSC, Monchegorsk, Russia:
О. А. Khomchenko, Chief Specialist of Science and Technology Development Department, Engineering Center, Candidate of Technical Sciences
V. L. Dubrovskiy, Head of Science and Technology Development Department, Engineering Center


Development of the refining facility of Kola Mining and Metallurgical Company is related to separation of magnetic fraction from copper-nickel matte and its processing. The magnetic fraction houses the major part of platinum group metals contained in the matte. A laboratory study helped understand how the chlorine dissolution parameters — i. e. the oxidation-reduction potential and the process duration — influence the solution extraction of non-ferrous and precious metals, iron and sulphur. It was found that the initial dissolution rate was quite high (up to 0.7 g/(g·min)), which is indicative of the metal phase of the material transfering in the solution. It was established that a longer process duration is associated with a higher oxidation degree of sulphide sulphur and its transition into solution in the form of sulphates leading to acid formation. It is shown that within the entire range of chlorination parameters a poor transition of metals into solution is observed, %: <0.07–0.1 Pd; <0.1 Pt; <0.1–2.7 Au. And a significant portion of the precious metals that transfered into the solution during chlorine dissolution of magnetic fraction is extracted into cement copper when copper is removed from the solution. When nickel powder is used for solution purification, the residual concentration of copper is 0.6 g/l, and when iron powder is used, it is from 0.03 to 0.05 g/l. The paper analyses some effective techniques for removing elemental sulphur from the chlorination deposit. The authors note that there is a relationship between the non-ferrous metals extraction level and the choice of technique for further sulphur removal. According to the authors, a sustainable technique (in terms of chlorine) could potentially be developed for producing high-purity cathode nickel and commercial salts.

keywords Magnetic fraction, chlorine dissolution, oxidation-reduction potential, solution extraction, precious metals, cementation, sulphur

1. Stensholt E. O., Dotterud O. M., Henriksen E. E., Ramsdal P. O., Stale sen F., Thune E. Development and practice of the Falconbridge chlorine leach process. CIM Bulletin. 2001. Vol. 94, No. 1051. pp. 101–104.
2. Hiroshi Kobayashi, Hirofumi Shoji, Satoshi Asano, Masaki Imamura. Chlorine leaching mechanism of nickel sulfide. Journal of the Japan Institute of Metals and Materials. 2016. Vol. 80, No. 11. pp. 713–718.
3. Hiroshi Kobayashi, Hirofumi Shoji, Satoshi Asano, Masaki Imamura. Chlorine leaching of nickel and cobalt mixed sulfide using iron chloride solution. Journal of the Japan Institute of Metals and Materials. 2017. Vol. 81, No. 5. pp. 282–287.
4. Demarthe J.-M., Gandon L., Goujet M. Hydrometallurgical method for treating nickel mattes. Patent 4173520 US. Published: 06.11.1979.
5. Peek E. Chloride Metallurgy: Process Technology Development. Chloride 2011: Practice and Theory of Chloride-Based Metallurgy. San Diego, California, 27 February – 3 March 2011.
6. Subagja R. Nickel extraction from nickel matte. Mineral Processing and Technology International Conference 2017. IOP Conference Series: Materials Science and Engineering. 2018. Vol. 285. pp. 1–9.
7. Demidov K. A., Khomchenko O. A., Sadovskaya G. I., Tsapakh S. L., Kalashnikova M. I., Keller V. V. Manufacturing method of concentrate of precious metals from sulphide copper-nickel raw material. Patent RF, No. 2444573. Published: 27.07.2011. Bulletin No. 21.
8. Kshumaneva E. S., Kasikov A. G., Kuznetsov V. Ya., Neradov skiy Yu. N., Kushlyaev R. G., Semushin V. V. Leaching of copper-nickel matte in the system Cu(II) – Cl – HCl – Cl2 under controlled oxidation-reduction potential of the solution. Zhurnal prikladnoy khimii. 2015. Vol. 88, Iss. 5. pp. 679–688.
9. Field K. L. Atmospheric leaching of a saprolytic nickel laterite ore in chloride solutions : Thesis for the degree of Master of Science in Hydrometallurgical Engineering. University of Cape Town, 2008.
10. Semenishin E. M., Rybachok B. N., Martynyak O. V. Method of sulphur recovery from sulphur-containing materials. Patent USSR, No. 1632936. Published: 07.03.1991. Bulletin No. 9.
11. Imambaeva B. S., Avdyukov V. I. Extraction of elemental sulphur from cakes produced from sulphide concentrates by pressure leaching. Available at:
12. Carrasco R. M. Process for dissolving sulfur ore using diaryl disulfide. Patent 20090162270 US. Published: 25.06.2009.
13. Hailong Li, Xianying Wu, Mingxia Wang, Jun Wang, Shaokang Wu, Xiaolong Yao, Liqing Li. Separation of elemental sulfur from zinc concentrate direct leaching residue by vacuum distillation. Separation and purification technology. 2014. Vol. 138. pp. 41–46.
14. Halfyard J. E., Hawboldt K. Separation of elemental sulfur from hydrometallurgical residue: A review. Hydrometallurgy. 2011. Vol. 109. pp. 80–89.
15. Borbat V. F., Voronov A. B. Autoclaving of nickel-pyrrhotite concentrates. Moscow : Metallurgiya, 1980. 175 p.
16. Erokhin B. I., Nelen I. M., Fedorov V. M., Silkis A. M., Voronov A. B., Kuznetsov V. N., Popovich V. G. Extraction of sulphur from sulphur containing materials. Certificate of Authorship USSR, No. 990644. Published: 23.01.1983.
17. Hougen L. R., Zachariasen H. Recovery of nickel, сopper and precious metal concentrate from high grade precious metal mattes. JOМ. 1975. Vol. 27, No. 5. pp. 6–9.

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