Golik V. I., Head of Laboratory, Professor, Doctor of Engineering Sciences, phone: +7 (8672) 76-40-84, Severo-Caucasian Mining-Metallurgical Institute

The abstract Extraction of stocks of deposits in two stages: at the first stage — rich, on the second — poor ores it is accompanied by transfer of stocks in a category inactive and increase in a share of a technogenic waste of extraction and processing. Technologies leaching provide extraction of metals from sub-standard ores to comprehensible level for economic reasons, but raw materials preparation demand, therefore at the first stage of working out of deposits it is expedient to create favorable conditions for the subsequent reception of metals from sub-standard resources. The greatest effect is reached at a combination of traditional mountain technology at the first stage and underground leaching at the second development cycle of deposits. The through factor of extraction of metal at the combined technology is comparable to this indicator at extraction only balance ores and if it appears more low at the expense of lower expenses at leaching profit reception is provided. Prospects of expansion of volume of output are connected with involving in processing of technogenic stocks of metallic raw materials.

1. Logachev A. V., Golik V. I. K voprosu ob etapakh razrabotki mestorozhdeniy (To a question on development cycles of deposits). Gornyi Zhurnal — Mining Journal. 2008, No 12.
2. Logachev A. V. Teoreticheskaya osnova poetapnoy razrabotki slozhnykh rudnykh mestorozhdeniy. Razrabotka nauchnykh osnov i sposobov resursosberegayushchey i ekologicheski chistoy tekhnologii dobychi poleznykh iskopaemykh. Materialy 51-y nauch.-tekhn. konf. (Theoretical basis of stage-by-stage working out of difficult ore deposits. Working out of scientific bases and ways of resource-saving and non-polluting technology of mining operations. Materials of 51st Scientific and Technical Conference). Novocherkassk : YuRGTU, 2002.
3. Golik V. I., Luzin B. S. Dobycha zolota iz otkhodov pererabotki rud. Mezhdunar. nauch.-praktich. konf. «Povyshenie kachestva obrazovaniya i nauchnykh issledovaniy» (Gold mining from a waste of processing of ores. International scientificpractical conference «Improvement of quality of formation and scientific researches»). Ekibastuz : EITI, 2009.
4. Logachev A. V., Golik V. I. K teorii vyshchelachivaniya zolota iz nekonditsionnogo pervichnogo i vtorichnogo syr'ya (To the theory leaching gold from sub-standard primary and secondary raw materials). Obogashchenie rud — Mineral Processing, 2009, No 2.
5. Ismailov T. T., Logachev A. V., Luzin B. S., Golik V. I. Obosnovanie effektivnosti izvlecheniya zolota iz khvostov obogashcheniya (A substantiation of efficiency of extraction of gold from enrichment tails). GIAB — Mining Information-Analytical Bulletin. 2009, No 11.