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Journal of Mining Sciences

2017 year, number 5

Innovative Solutions in Iron Ore Production at Mikhailovsky Mining and Processing Plant

A. V. VARICHEV1, A. A. UGAROV1, N. T. EFENDIEV1, S. I. KRETOV2, A. A. LAVRINENKO3, A. A. SOLODUKHIN4, P. V. PUZAKOV2
1Metalloinvest Holding Company, Rublevskoe shosse 28, Moscow, 121609 Russia
2Mikhailovsky Mining and Processing Plant, ul. Lenina 21, Zheleznogorsk, 307170 Russia
3Academician Melnikov Institute of Intergated Mineral Resources, Kryukovskii tupik 4, Moscow, 111020 Russia
4NPVP TOREX, ul. Osnovinskaya 8, P.B. 169, Ekaterinburg 620041, Russia
Keywords: железистые кварциты, флотация, железорудные окатыши, фабрика окомкования, обжиговая машина МОК-1-592, ferruginous quartzite, flotation, iron ore pellets, pelletizing factory, roasting machine MOK-1-592

Abstract

The article describes features of ore reserves and development of processing technologies at Mikhailovsky MPP. New approaches to disintegration of ore and to improvement of dry magnetic separation of unoxidized ferruginous quartzite are evaluated. The scope of the discussion embraces the process of finishing magnetite concentrate, extracted from unoxidized ferruginous quartzite by wet magnetic separation, using the flotation flow chart with the closed and open circuits, as well as the reverse cation flotation of hematite concentrate from tailings of wet magnetic separation. The authors present process solutions aimed at designing energy-saving conveyor roasting machine MOK-1-592 and the technologies of production of different purpose iron ore pellets.