National Polytechnic University of Armenia (Erevan, Armenia):

A. A. Frangulyan, Cand. Eng., Department of General Chemistry and Chemical Processes, e-mail: albertaranea@mail.ru
M. E. Sasuntsyan, Cand. Eng., Associate Prof., Department of General Chemistry and Chemical Processes, e-mail: msasuntsyan@mail.ru
V. A. Martirosyan, Dr. Eng., Prof., Department of General Chemistry and Chemical Processes, e-mail: v.a.martirosyan@mail.ru

At present tim, polymetallic copper-bearing sulfide ores mined in local conditions, except the minerals of basic nonferrous metals (chalcopyrite, bornite, chalcosite, covellite, sphalerite, galenite, etc.), also contain a significant amount of iron sulfides in the form of such minerals as pyrite, pyrrhotite and arsenopyrite. At the flotation enrichment of such sulphide-polymetallic ores, copper, zinc and lead concentrates with high iron content are selectively separated and obtained. With this enrichment process, for a number of reasons, iron is removed from the flotation cycle and thrown into the dumps. Meanwhile, these wastes contain more iron than common iron ores. From this standpoint, the development of technology with integrated recovery of both nonferrous metals and iron is inevitable and very relevant. Based on the data of mineralogical and X-ray phase analyses, the character of distribution of iron minerals in the obtained collective concentrate was studied with the aim of developing a further effective technological direction for the complex processing of these sulfide concentrates with the extraction of nonferrous metals and iron from them.

1. Magakyan I. G., Amiryan Sh. O., Zaryan R. N. et. al. Minerals of ore formations of the Armenian SSR. Vol. 1. Erevan: Izdatelstvo AN Armyanskoy SSR, 1984. 306 p.
2. Sargsyan L. Ye., Moatasem M. Kh. Mineralogy Particularities of Gold Bearing Sulphidic Polymetallic Ores. Reports of the National Academy of Sciences and the State Engineering University of Armenia, TS Series. 2009. Vol. 62, No. 2. pp. 145–149.
3. Rylnikova M. V., Emelyanenko E. A., Gorbatova E. A., Yagudina Yu. R. Improvement of copper-pyrite ore processing in the Urals. Gornyi Zhurnal. 2016. No. 12. pp. 65–72.
4. Senchenko А. Е., Kulikov Yu. V., Aksenov А. V. Process characteristics of Udokan copper deposit ores, defining the efficient process flowsheet and prospective ways of the process improvement. Tsvetnye Metally. 2017. No. 10. pp. 35–48.
5. Revenko A. G. X-ray fluorescence analysis of natural materials. Novosibirsk: Nauka, 1994. 264 p.
6. Pichugin V. F., Yanovskiy V. P., Morosova N. S., Yermolovich I. M. Modification of Materials with Particle Beams and Plasma Flows. Proceedings of 10^th International Conference on Modification of materials with Particle Beams and Plasma Flows. Tomsk, 2010. pp. 672–675.
7. Filippova N. A. Phase analysis of ores and their products. Moscow: Khimiya, 1975. 280 p.
8. Senchenko А. Е., Kulikov Yu. V., Kurchevskaya Е. М. Investigation of the material composition of of Udokan copper deposit ores using the modern technologies of process mineralogy. Tsvetnye Metally. 2017. No. 10. pp. 25–35.
9. Chernousenko E. V., Mitrofanova G. V., Vishnyakova I. N., Kameneva Yu. S. Flotation and magnetic methods to recover non-ferrous metals from low grade technogenic raw materials. Tsvetnye Metally. 2019. No. 2. pp. 11–16.
10. Rylnikova M. V., Emelyanenko E. A., Gorbatova E. A., Yagudina Yu. R. Improvement of copper-pyrite ore processing in the Urals. Gornyi Zhurnal. 2016. No. 12. pp. 65–72.
11. Semun N. Ts., Mamyachenkov S. V., Rogozhnikov D. А. Complex processing of pyrite concentrates at the Erdenet mining-andprocessing integrated works. Metallurg. 2013. No. 1. pp. 80–82.
12. Sargsyan L. T., Oganisyan А. М., Frangulyan А. А. Associated iron recovery in the hydrometallurgical processing cycle of pyrite-chalcopyrite concentrates. Collection of reports of the XX International scientific and practical conference «Science and modern age». Novosibirsk. 2013. pp. 157–162.
13. Frangulyan А. А., Ogayanisyan А. М., Sargsyan L. E. Evaluation of effective technological lines for the extraction of sylphic ore iron. Vestnik NPUA. 2016. pp. 604–611.
14. Kolokoltsev V. M., Petrochenko E. V., Molochkova O. S. Influence of complex V, Cu, Ti and B allowing on structural and phase state, mechanical properties and Wear resistance of white cast iron. CIS Iron and Steel Review. 2016. Vol. 11. pp. 23–29.
15. Prabal Kumar Agrwal, Sanket Bacchuwar, Rao G. V., Sharma S. K. Оptimisation of process parameters of spiral concentrator for beneficiation of iron ore stacked slimes from Kirandul, Chattisgarh, India. XXVIII IMPC Proceedings. Quebec, Canada. 2016. p. 627.
16. Sadeghi M., Bazin C., Hodouin D., Devin P.-O., Lavoie F., Renaud M. Control of spiral concentrators for the concentration of iron ore. XXVIII IMPC Proceedings. Quebec, Canada, 2016. p. 792.
17. Sargsyan L. E., Oganisyan А. М., Frangulyan А. А. Roasting of iron-copper-sulphide concentrates for metal extraction by hydrometallurgy. Metallurgicheskaya i gornorudnaya promyshlennost. 2014. No. 5. pp. 74–77.
18. Martirosyan V. А., Sarkisyan K. V., Sasuntsyan M. E., Lisovskaya Y. О. Heat treatment of the Drmbon gold-copper sulphide concentrate during sulfuric acid leaching. Izvestiya NAN RA i GIUA. Seriya Technicheskie nauki. 2014. Vol. 67. No. 4. pp. 144–154.