№66-09

Generalization of the methodological approach to evaluation of efficiency of mining and processing production

A. Cherep¹

¹Dnipro University of Technology, Dnipro, Ukraine

Coll.res.pap.nat.min.univ. 2021, 66:94-104

https://doi.org/10.33271/crpnmu/66.094

Full text (PDF)

ABSTRACT

The purpose is generalizing of output data and scientific and applied determining of technological factors that condition on the conceptual approach to improving the economic results of mining and processing of minerals and, as the result the efficiency of the production activities of a mining and processing enterprise.

The methodology is the substantiation of the factors of technological and economic approaches to the evaluation of production processes of mining and processing of manganese ore raw materials that determine a cost of a concentrate, losses of reserves of ore raw materials and metal in the waste of processing, as well as a volume of overburden, that should be developed for the production of a adjusted volume of concentrate.

Findings. The discrepancy of the technological scheme of mining operations on manganese open pits of the Pokrovsky ore mining and processing enterprise with the requirements for the production of competitive concentrate in the event of reduced demand, as well as the direction of its reconstruction, is determined. The influence of the quality of the ore stream on the economic results of the mining and processing production is substantiated and rational conditions for averaging of a quality of ore raw materials of different open pits are determined. Scientific and applied approach for determining of the rational volume of overburden, which provides an overburden of ore stream in a volume that allows minimizing an open pit’s costs for overburden works, is developed.

Originality. The approach of improving of the technological scheme of mining of horizontal ore stream under the condition of reduced demand for products is determined. Methodical approach to the evaluation of the efficiency of mining activity of mining and processing enterprise is generalized taking into account concentrate cost, losses of reserves of ore raw materials and metal in the waste of processing, as well as the volume of overburden, which meets market demand for concentrate. The certain indirect correlation between a quality of manganese ore and a degree of metal extraction into a concentrate, which should be evaluated while processed ore-stream is forming, is determined.

Practical value. The technology of mining operations at the open pits of the Pokrovsky ore mining and processing enterprise according to concentrate cost that reflects their adaptation to market conditions is estimated. Statistical tie between technological and economic conditions for mining of ore raw materials and the quality of the ore stream (by the content of metal) is determined. The methodical approach is proposed for averaging of manganese ore in two groups of open pits, which provides the largest amount of extracted metal and minimizes the cost of the enterprise for overburden works.

Keywords: open pit, production processes, manganese ore, quality of ore stream, technological and economic efficiency, metal extraction, concentrate costs, reconstruction.

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