«Kombinat KMAruda» JSC (Gubkin, Russia):

Zimin Yu. I., Deputy Chief Engineer of an Enterprise, Head of a Stowing Shop, е-mail: zimin@kmaruda.ru

«Scientific and Research Institute on Problems of Kursk Magnetic Anomaly» JSC (Gubkin, Russia):

Leyzerovich S. G., Head of Laboratory of Underground Operations

There are briefly described the earlier laboratory researches, experimental and industrial operations, related to the placement of thickened current concentration tailings in underground developed cells. These researches and operations were held under the production conditions. Industrial technological lines are given along with the list of applied equipment for the following operations:
-preparation and feeding of hydraulic stowing into mine;
-circulating water supply.
Fresh water requirement has decreased by 15–20 times. Initial pulp contains 5–18 % of the solid substance, according to weight. Stowing mixture, supplied to the mine, contains 60-70% of the solid substance, according to weight. Clarification of pulp on the surface is carried out in circular thickener in the mine, using the sludge in the cell. Diameter of the thickener is 50 m. As a result of the technology mastering, there has been completely stopped the storaging of concentration wastes on the surface. Considering the emergency situation, the pulp is entered into the buffer capacity. After that, it is returned into the circular thickener by the floating hydraulic dredge. The stowing mixture is supplied to mine by the vertical pipe line, which is laid in well. The pulp flows in mine by gravity in polyethylene pipes. The filled places are isolated by waterproof concrete bulkheads.

1. Trebukov A. L. Issledovaniya tselesoobraznosti primeneniya gidravlicheskoy zakladki pri kamernoy razrabotke rudnykh mestorozhdeniy : dissertatsiya … kandidata tekhnicheskikh nauk (Researches of reasonability of application of hydraulic stowing during the cell development of ore deposits : dissertation....of Candidate of Engineering Sciences). Gubkin, 1961, 153 p.
2. Elnikov V. N., Leyzerovich S. G., Uskov A. Kh. Gornyi Zhurnal – Mining Journal, No. 1, 1998, pp. 31–33.
3. Leyzerovich S. G., Elnikov V. N. Promyshlennyy eksperiment po primeneniyu prirodookhrannoy tekhnologii pri razrabotke zhelezistykh kvartsitov : materialy pervoy mezhdunarodnoy konferentsii «Resursovosproizvodyashchie, malootkhodnye i prirodookhrannye tekhnologii osvoeniya nedr» (Industrial experiment for application of natural protection technology with development of ferruginous quartzites : materials of the first international Conference «Resource-forming, low-waste and natural protection technologies of subsoils mastering»). Moscow : Peoples` Friendship University of Russia, 2002, pp. 74–76.
4. Uskov A. Kh., Leyzerovich S. G. Gornyi Zhurnal – Mining Journal, 2008, No. 4, pp. 18–20.