V. V. Patrushev, senior researcher; S. V. Ostanova, postgraduate; A. V. Chubarov, trainee; Yu. S. Kononov, senior researcher, e-
mail: kononov@icct.ru; Institute of Chemistry and Chemical Technology of the RAS Siberian Branch, Krasnoyarsk.

The work was performed under the grant from the President of the Russian Federation No. NSh
-5487.2006.3 “Research of heterogeneous systems and processes in complex processing polymetal raw materials” (state support of leading scientific schools), school’s scientific supervi
sor G. L. Pashkov.

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