Tashkent State Technical University (Tashkent, Republic of Uzbekistan):

Rakhimov V. R., Head of a Chair, Academician of Academy of Sciences of Republic of Uzbekistan, phone: +998 (71) 246-54-51

State Enterprise «Navoi Mining and Metallurgical Combine» (Navoi, Republic of Uzbekistan):

Shemetov P. A., Counselor of Chief Executive Officer, Doctor of Engineering Sciences

Snitka N. P., Chief Engineer

Methods and technical means of formation of mineral raw material flow during the joint extraction of natural and anthropogenic mineral raw materials are shown by the example of open cast mining of Muruntau and Myutenbai deposits. Both deposits have significant sizes and open-pit mine reserves in horizontal and vertical projection. These deposits are characterized by complex structure of ore bodies with balance and off-balance ores and inclusions of conditionally waste rocks in one mine section. Specific character of these deposits substantiated the following operations: separate extraction, transporting and warehousing of ore mass into four grades, together with management of qualitative and quantitative parameters of open pit's mineral raw material flow and regulation of intensity of works in bottoms; wide range of mining operations both in vertical projection of open pit and in its working area; formation of mineral raw material flow not only for processing from open pit, but also for processing with usage of reserves of external stock locations of off-balance ore, with simultaneous increasing of its part in ore flow structure. On the basis of the carried out researches, an urgent scientific and practical task was solved for substantiation of technology and organization of formation of mineral raw material flow and its processing to marketable metal during the joint development of natural and anthropogenic deposits. The deposits are developed by realization of improved system of continuous projecting and planning of open cast mining. Mastering of the propose system in joint open pit «Muruntau – Myutenbai» (Navoi Mining and Metallurgical Complex) makes it possible to prolong the period of effective (profitable) operation of «open pit – plant» complex and provides the obtaining of total economic effect of near 2.5 mln USD per year.