FEASIBILITY CRITERIA FOR APPLICATION OF PRE-ENRICHMENT TECHNOLOGIES FOR MODERNIZATION OF MINING INDUSTRIES

The article is devoted to a topical issue of the mining and metallurgical industry, caused by a decrease in the quality of the mineral resource base and an increase in the cost of ore processing. The analysis of the systemic problems of the mining industry is carried out; directions for solving the problems posed are identified. The technological efficiency of enrichment of solid minerals is generally determined by three deterministic and stochastic factors: the content and mineral form of the valuable component in the original ore, its contrast before separation, and the ability of the apparatus to selectively sort the ore flow into enriched and depleted products. The contrast is not an unambiguous criterion for the efficiency of preliminary concentration of non-ferrous and precious metal ores. In this regard, the application of a phenomenological approach to the development of industrial processing technologies based on the correlation between contrast and washability is limited to cases of low contents of the valuable component and high selectivity of sorting the ore flow by the dressing apparatus. The criteria for the expediency of applying the pre-enrichment, technology for a particular ore have been established. The magnitude of the increase in the efficiency of the production of commercial concentrates with the combined use of technologies of preliminary and deep concentration is estimated. In modern conditions of stricter environmental requirements, mining enterprises are forced to modernize their production facilities. Introduction of pre-enrichment technology is the most accessible of the available technologies, allowing to reduce the environmental load by reducing the amount of fine waste, over-grinding, and the use of reagents. Application of the proposed criteria for assessing the feasibility of preliminary concentration of specific ores will increase the completeness of extraction of valuable components, reduce the environmental load, and increase the efficiency of the mining industry.

chipped rock mass, contrast, preliminary enrichment, technological efficiency, ore, concentrate, mineral resource base, non-ferrous metals, gold, efficiency.

Shulgina K. A., Kuzina L. N., Mironova Zh. V., Konev A. V., Korotkevich V. A. Feasibility criteria for application of pre-enrichment technologies for modernization of mining industries. Business. Education. Law, 2021, no. 3, pp. 93—97. DOI: 10.25683/VOLBI.2021.56.320.