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International Journal of Energy for a Clean Environment

ISSN Print: 2150-3621
ISSN Online: 2150-363X

International Journal of Energy for a Clean Environment

Formerly Known as Clean Air: International Journal on Energy for a Clean Environment

DOI: 10.1615/InterJEnerCleanEnv.2016018771
pages 99-111

POSSIBILITIES OF COMPLEX RECYCLING OF WASTES OF THE ENERGY ENTERPRISES OF PRIMORSKY KRAI

E. I. Shamrai
Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
A. V. Taskin
Far Eastern Federal University (FEFU), Vladivostok, Russia
S. I. Ivannikov
Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
Aleksandr A. Yudakov
Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia; Far-Eastern Federal University, Vladivostok, Russia

ABSTRACT

The work presents the results of studying ash and slag disposal areas of Primorsky Krai energy enterprises − the objects with high concentrations of Au and Ag. The chemical and mineral contents of samples from the investigated ash and slag disposal areas have been determined. It is shown that the found particles of free gold and of other noble metals are mostly represented by fine and ultrafine sizes. It is also shown that morphology diversity is typical of gold microparticles. The patterns of Au collection and allocation during the working process in ash and slag waste (ASW) were found. The possibility of using the materials obtained during the separation of ASW as materials for different industries is shown. An appropriate, multistage way of complex ASW recycling has been developed. The possibility of creating a profitable plant for complex processing of ASW is shown. It is also shown that additional extraction of useful components from concentrates of gold and platinum group metals (PGM) can significantly reduce the payback period of production on complex processing of ASW.