National Mineral Resources University — Mining University, Saint-Petersburg, Russia:

V. B. Kuskov, Assistant Professor, Candidate of Engineering Sciences, opikvb@mail.ru
Yu. M. Sishchuk, Assistant Professor, Candidate of Philological Sciences

The article addresses a topical issue associated with optimization of dressing technologies and equipment for iron ore of nonstandard type and composition in operating and planned mines. In terms of the promising Bakcharsky deposit of iron-containing oolites in Western Siberia iron ore field and Yakovlevsky deposit of rich weak iron ore in the Kursk Magnetic Anomaly, the authors review researches and tests on introduction of auxiliary circuits in common process flow diagrams of magnetite and magnetite-hematite dressing using advanced machinery. The process flow diagrams of ore processing and marketable production for metallurgical conversion have benefited from introduction of: high-gradient separation in pulsating pulp slurry; pre-classification of milled ore in hydrocyclone with discharge of barren particles; magnetic roasting in special magnetic separators with metal briquetting; pre-screening of original feed ore with extraction and agglomeration of rich fine mesh sizes; reverse flotation of middlings of magnetic separation of hematite-magnetite ore. The research proves the necessity to use specific approaches and technologies of efficient dressing of iron ore with complex material constitution and mineral composition to ensure improved quality of marketable product, enhanced recovery of iron and minimized power consumption and other inputs.

The study was conducted in the framework of the project part of the governmental order in the area of scientific activity, No. 5.1284.2014/K dared July 11, 2014.

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