Vernadsky State Geological Museum (Russia):

Sapezhinskiy V. S., Ph. D. in Physics and Mathematics, Leading Researcher

Pevgov V. G., Ph. D. in Physics and Mathematics, Leading Researcher

Ryakhovskiy V. M., Doctor of Geology and Mineralogy, Chief Researcher, rvm1941@mail.ru

Moscow State University (Russia):

Ryakhovskaya S. K., Ph. D. in Geology and Mineralogy, Senior Lecturer

This paper presents the new methods of ore mixes treatment with low-temperature plasma. The method of nonequilibrium plasma formation by means of barrier discharge and the character of its effect upon ore processing are described. A diagram of the installation for bulk materials treatment with plasma is presented. The possibilities for application of levitated suspension of material within inductor coil with alternating magnetic field vector were considered with respect of particles grinding processes and also for other purposes. The possibilities and advantages of process samples high-purity grinding method are shown. The Orsk Metallurgical Plant slag materials were treated with low-temperature plasma under laboratory conditions, resulting in deep transformation of primary products with formation of new mineral phases and changes in the character of their localization in specimens. As a result, iron-nickel sulfide phases were formed as globular segregations, and solid solutions of iron and nickel appeared as phases practically without sulfur and oxygen content. Besides, magnetite and native iron phases were formed among processing products. Principally new methods of energy action effects upon ore mixes are proposed, increasing selective liberation of mineral aggregates and heightening contrast features of individual minerals, thus facilitating valuable components recovery efficiency increase, as well as power saving.
The work was performed with the financial aid from the Ministry of Education and Science of the Russian Federation (the Project No. 14.604.21.0128).

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