Technology of recovery of associated gold from Siberian iron ores
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Skarn-magnetite ores of Siberia and wastes (rejects) of their treatment are a potential source of gold and other precious components. Skarn-magnetite mineral associations, in particular, are characterized by low gold contents (hundredths of 1 g/ton). Higher contents of noble metals are associated with superposed sulfide and quartz-vein mineralization (tenths of 1 g/ton and less).
From the point of completeness of extraction of precious components and solution of ecological problems arising from the operations of iron and steel works of West Siberia, technological schemes of integrated utilization of commercially valuable components at the stage of primary treatment of ores, which include their selective refinement and complete extraction of sulfide concentrates, are preferable. Since bringing these projects to fruition requires a lot of expenditures, more realistic at the moment are technologies of partial extraction of noble metals linked to current production schemes.
Possible sources of gold are hydrothermally altered ores, some part of rock spoil banks, and rejects of iron ore treatment. In dry and, in particular, wet magnetic separation of ores magnetic concentrates partially freed from sulfides and gold accumulates in the rejects. At the initial stages of implementation of the program of integrated utilization of Siberian iron ores, profitable secondary extraction of gold from old and current tailings of wet magnetic separation at the Mundybash CAP may be achieved by employing modern high-efficiency centrifugal concentrators.
KeywordsMagnetite Pyrite Chalcopyrite Arsenopyrite Gold Content
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- 1.F. A. Baryshnikov and M. N. Koloshina, “Integrated utilization of iron ores of Gornaya Shoriya and Khakassiya of the Minusinsk region,” Gorn. Zh., No. 9 (1958).Google Scholar
- 2.K. Nemek, “The ways towards many-sided utilization of mining waste banks in the region of Central Bohemia,” Impact Mining Environment: Intl. Workshop, Tallin-Leningrad, June 18–25 (1986): Part 2 UNEP/UNESCO/USSR Proj. Geol. and Environment, Moscow (1989).Google Scholar
- 3.A. P. Kuznetsov and A. I. Meka, “Economic minerals and building materials from iron ore concentration rejects [with reference to Krivbas (Krivoy-Rog Iron Ore Basin) and KMA (Kursk Magnetic Anomaly)],” Geology, Economy, Methods of Prediction, Search. Estimation, and Prospecting of Deposits of Solid Economic Minerals, Review of Information of the VIÉMS (All-Union Scientific Research Institute of Economics of Mineral Raw Materials and Geological Exploration) [in Russian], Moscow (1990).Google Scholar
- 4.V. A. Naumov, “Technogenic placers—unaccounted reserve of noble metals,” Contemporary Problems of Geology of the Western Urals [in Russian], Perm (1995).Google Scholar
- 5.“De l'or sale: le marché des activités liées aux déchets, Deuxieme partie: les actuers,” Eau. Ind. Neusances, No. 170 (1994).Google Scholar
- 6.M. N. Zyryanov, “Utilization of tailings of gold-bearing ore concentration in concrete production,” Tsvet. Metallurg., No. 11 (1993).Google Scholar
- 7.Iron Ore Deposits of the Altai-Sayan Mountainous Region [in Russian], Izd. Akad. Nauk SSSR, Vol. 1; Book 2: Description of the Deposits [in Russian], Moscow (1959).Google Scholar
- 8.Iron Ore Deposits of Siberia [in Russian], Nauka, Novosibirsk (1981).Google Scholar