The practice of leaching metals from substandard raw materials and ore dressing waste

The article is devoted to a retrospective analysis of the practice of leaching stocks of non-conventional ores and processing waste. The experience of involving non-conditioned metal-containing raw materials in operation is summarized. The task of developing the scientific foundations of the processes of transferring metals to a mobile state and extracting metals from a solution with environmental safety is formulated. It is shown that metal extraction technologies using the phenomenon of metal transfer to a mobile state are being industrially developed as an opportunity to reduce metal losses at the stages of extraction and processing. The practice of leaching substandard ores from deposits in the North Caucasus, Central Asia, Kazakhstan and Russia is summarized. Detailed information is provided on the development of a number of deposits by variants with ore preparation by boreholes, storage and infiltration of reagents. The data on the results of laboratory studies of the leaching of ores of ferruginous quartzites of Les-Bedinsky in the disintegrator and uranium ores of the Vostok and Zvezdnoye deposits (Kazakhstan) are presented. It is shown that in the fields of Transbaikalia leaching provides most of the annual production with the extraction of 85%. The base of extraction is systematized — reserves of technogenic deposits of Russia. The tasks of implementing the concept of metal leaching are set: selectivization of metal extraction from solution, neutralization of masterbatch solutions, etc. An algorithm for solving problems of improving metal extraction using hydrometallurgical processing processes is recommended. The calculation of quantitative parameters of extraction of metals from ore enrichment sites and the effect of tailings activation in the disintegrator on the homogeneity of the mixture in the conditions of a particular enterprise is given. The scientific novelty of the obtained results consists in the use of new activation tools developed with the personal participation of the author, as well as the combination of technologies based on the completeness of the use of natural resources. The results of the study can be used in the development of technologies for leaching metals from substandard in terms of metal content of raw materials. In comparison with related publications on the subject and intended purpose, the proposed article contains information about the practice of transferring metals to a mobile state, as an opportunity to reduce metal losses in the process of mining, including underground.

Valiev N. G., Propp V. D., Abramkin N. I., Kambolov D. A. The practice of leaching metals from substandard raw materials and ore dressing waste. MIAB. Mining Inf. Anal. Bull. 2023;(12-1):17—30. [In Russ]. DOI: 10.25018/0236_1493_2023_121_0_17.

Valiev Niyaz Gadym Ogly, Dr. Sci. (Eng.), Professor, Head of the Mining Department, Ural State Mining University, Russia, 620144, Yekaterinburg, Kuibyshev, 30, gtf.gd@m. ursmu.ru;
Propp V. D., Cand. Sci. (Eng.), Professor, Department of Mining, Ural State Mining University, Russia, 620144, Ekaterinburg, Kuibysheva, 30, gtf.gd@m.ursmu.ru
Abramkin N. I., Dr. Sci. (Eng.), Professor, Professor of the Department of Engineering and Technology of Mining and Oil and Gas Production of the Moscow Polytechnic University. Moscow, Russia Е-mail: abramkin57@mail.ru; https://orcid.org/0000-0001-6049-3730/ Kambolov D. A., Cand. Sci. (Eng.), Associate Professor, North Caucasus Mining and Metallurgical Institute, Russia, 362021, Vladikavkaz, st. Nikolaeva, 44.

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