RIVS Science and Production Association:

Shumskaya E. N., Principal Researcher, Candidate of Engineering Sciences

Poperechnikova O. Yu., Head of subdivision

E-mail (common): rivs@rivs.ru

JV “IVS”:

Nagaeva S. P., Mineralogist, e-mail: SPN@yandex.ru

In magnetite ore mining and processing, oxidized ore makes 10–30% out of which 90% is lost with tailings. Processing of oxidized ferruginous quartzites is a promising and economic source for growth of concentrate production without increase in magnetite ore output. At present, under the order of Inguletsky Mining-and-Processing Integrated Works, Ukraine, RIVS has performed the research and pilot trial aimed at estimation of feasibility of oxidized quartzites processing. In view of the fine dissemination of Inguletsky oxidized quartzites (average size of hematite grains is 10–50 μm, quartz — 50–70 μm), the objective of the laboratory research was to determine the optimized processing method. As magnetic and gravity concentration of fine-disseminated ore is low-effective, the solely method of dressing is flotation. Hematite quartzites are currently not extracted but considered as a raw material for the Krivoi Rog Oxidized Ore Miningand-Processing Integrated Works and processing plants in Krivbass. As a result of the performed research, the technology of magnetite ore processing has been developed and pilot trialed.

1. Shumskaya E. N., Poperechnikova O. Yu. Razrabotka effektivnoy tekhnologii obogashcheniya okislennykh zhelezistykh kvartsitov (Development of efficient concentration technology of oxidized ferruginous qurtzites). Gornyi Zhurnal = Mining Journal. 2012. No. 11. pp. 52–55.
2. Nagaraj D. R. et al. Non-Sulfide Mineral Flotation: An Overview, Proceedings of Symposium. Honoring M. C. Fuerstenau. Society of Mining, Metallurgy and Exploration Inc., Littleton, CO, 1999.