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ASH AND SLAG WASTE PROCESSING WITH EXTRACTION OF RARE METALS AS A KEY FACTOR OF SOCIAL, ECONOMIC AND ECOLOGICAL WELL-BEING IN COAL MINING COUNTRIES



At the moment, waste of heat power stations is scantly used by the industry in Russia, as a rule, as an additive in production of building materials, while capabilities of this kind of waste are much wider. Accordingly, this waste needs integrated processing. In this article, the prospects of integrated processing of ash and slag waste as the source of highly marketable rare metals are analyzed. Applicability of electromagnetic microwave radiation to creation of a new efficient method for extraction of rare and rare-earth metals from ash and slag waste is discussed. A new chemical-engineering solution is proposed for the mining waste process circuit, including: (1) radiometric processing of waste by energy-saving comminution down to a disperse state by pulsed electromagnetic emission; (2) acid dissociation of mineral matrix of disintegrated waste intensified by continuous electromagnetic microwave radiation. The solution discussed will facilitate the reduction in power input, shortage of process time and the increase in the finished product yield.



: 7
2018
УДК: 662.654.1: 537.868
DOI: 10.25018/0236-1493-2018-7-0-16-22
Authors: Danilov O. S., Belov A. V., Grebenyuk I. V.

Authors' Information:
Danilov O.S., Candidate of Technical Sciences, Researcher, e-mail: dnv.07@mail.ru,
Belov A.V., Candidate of Technical Sciences, Assistant Professor, e-mail: poraen@mail.ru,
Grebenyuk I.V., Manager, e-mail: igor.grebenyuk@mail.ru,
Far East Federal University, Vladivostok, Russia.

Key words:
Аsh and slag waste, rare and rare-earth metals, processing, electromagnetic microwave radiation, radiometric processing, social and economic well-being, ecology.

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