North-Caucasian Federal University, Vladikavkaz, Russia:

V. I. Golik, Professor, Doctor of Engineering Sciences, v.i.golik@mail.ru

Belgorod State National Research University, Belgorod, Russia:
V. I. Komashchenko, Professor, Doctor of Engineering Sciences

The article addresses the problem of supply of mines with raw material to prepare solidifying backfill at the stage of transition from open pit to underground mining in the Kursk Magnetic Anomaly. The authors inform on the laboratory test procedure on leaching of metals from ferruginous quartzite processing waste and on the effect of mineral activation on the strength of the prepared solidifying backfill mixtures. Proposed as a promising trend of mineral processing waste utilization, the technology of the mechanochemical activation of metal-bearing raw material in a disintegrator allows metal recovery from the waste and enables an increase in the strength of the leached material. Using the samples of waste from tailing ponds of Lebedinskoe Mining and Processing Works, it is proved to be feasible to additionally leach metals and to prepare solidifying mixtures using binders and solids made of the leached material. It is shown that transition to underground mining in the Kursk Magnetic Anomaly will improve ecological situation in the region and prevent from decrease in the mine capacities.

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