Incidental concentrating of valuable elements in processing sulphide-copper ores yields supplementary semi-products enriched with osmium, rhenium, and selenium. Peculiar features of processing properties of rhenium, radiogenic osmium, and selenium are shown in this paper, as well as concentrators for rare microelements and ways of their extraction.
Dump slag dust products of man-made deposits of Norilsk region are a promising source of precious metals. Methods for concentrating precious and base metals in sediment cores of multiponds slag products are studied.
A thermodynamic analysis of the system Se – H 2 O was prospect. Plotted dependences the concentrations of selenium oxyanions from the pH of the solution and polarization graphs for various materials of the anode. Draw conclusions about the regularities of selenium electroextraction from selenium solutions.