UTILIZATION OF WASTES AFTER METALLURGICAL AND CHEMICAL PROCESSING | |
ArticleName | Artificial geochemical barriers for extracting non-ferrous metals mining wastes and diminishing the environmental hazard |
ArticleAuthor | Masloboev V. A., Makarov D. V., Mazukhina S. I., Nesterov D. P., Menshikov Yu. P. |
ArticleAuthorData | Institute of Industrial Ecology Problems of the Kola Science Center of the Russian Academy of Sciences (INEP KSC RAS) V. A. Masloboev, Director D. V. Makarov, Chief Researcher, e-mail: makarov@inep.ksc.ru S. I. Mazukhina, Head of Laboratory
I. V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Centre, Russian Academy of Sciences D. P. Nesterov, Junior Researcher
Geological Institute, Kola Scientific Centre, Russian Academy of Sciences Yu. P. Menshikov, Researcher |
Abstract | Geochemical barriers — it's a crust, in which the chemical elements are concentrated because of reducing the intensity of their migration. With the use of geochemical barriers there can be developed methods for the protection of surface and ground waters from contamination. Geochemical barriers are also widely used in p hysical-chemical geotechnologies, particularly in the methods of intradump concentration. Artificial geochemical barriers are formed on the basis of the mining complex wastes. Possibility and efficiency of their use for nickel and copper reextraction on the basis of two types of barriers: mixture of active silica and carbonatite and mixture of serpentine and carbonatite (at a 1:1 ratio) were studied. Laboratory research and physical-mathematical modelling has revealed that mixtures of active silica and carbonatite, serpophite and carbonatite can be effectively used to create artificial geochemical barriers. The average contents of nickel and copper precipitated on them turn the barriers into technogenous ores yielding itself to pyroand hydrometallurgical processing. Experiments with geochemical barriers were carried out on water bodies polluted by the Kola MMC enterprises. It has been shown that the water can be purified to the levels admissible for fish breeding. |
keywords | Technogenous ores, mining wastes, artificial geochemical barriers, nickel and copper deposition, physicalchemical geotechnologies, environmental waters and effluents rectification, maximum permissible concentration |
References | 1. Perelman A. I. Geokhimiya (Geochemistry). Moscow, 1989. 528 p. |
Language of full-text | russian |
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