O. N. Krivolapova
National University of Science and Technology “MISIS”
Russian Federation

Olga N. Krivolapova – Cand. Sci. (Eng.), Associate Professor of the Department of Nonferrous Metals and Gold,

4, build. 1, Leninskiy Prosp., Moscow, 119049.

I. L. Fureev
State Research and Design Institute of the Rare Metal Industry (Giredmet JSC)
Russian Federation

Ilya L. Fureev – Head of the Department of the Laboratory for the Complex Processing of Ore Raw Materials,

2, build. 1, Elektrodnaya Str., Moscow, 111524.