STUDY OF GRANULOMETRIC AND CHEMICAL-MINERAL COMPOSITIONS OF TOMTOR ORE DEPOSIT

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Abstract


A study of the particle size distribution, mineral and chemical composition of the complex scandium-rare-earth-niobium Tomtor ore deposit has been conducted. It is shown that the basis of the ore is comprised of phosphates, carbonates and niobates. The main identified minerals are the minerals of crandallite group (gorceixite, goyazite and florencite), pyrochlore and monazite, in addition, clearly identified boehmite, apatite, and quartz. A group of other minerals includes siderite, kaolinite, rutile and some other minerals. It is established that the investigated ore belongs to a mineral variety of the pyrochlore-monazite-crandallite ores of phosphate-rare-metal type with a predominance of crandallite minerals (50%) and relatively low content of pyrochlore (~7%) in its composition. Based on the content of niobium oxide Nb2O5 (~4%) in a sample, the ore can be attributed to the second class according to the accepted classification, i.e. the rich niobium ores, containing from 3,5 to 9% Nb2O5. Tomtor ore deposit is also rich in the mineral content of rare earth elements. On the basis of the conducted research the conclusion about practical impossibility of beneficiation of “Tomtor” ore deposits by traditional methods and economic feasibility of ore processing by the combined pyro - and hydrometallurgy methods is made.


About the authors

Marianna Yu Malkova

Peoples’ Friendship University of Russia (RUDN University)

Author for correspondence.
Email: marianna300@yandex.ru
6, Miklukho-Maklaya str., Moscow, 117198, Russian Federation

Doctor of Technical Sciences, Professor of the Department of Architecture and Construction, Peoples’ Friendship University of Russia. Research interests: metallurgy of ferrous and non-ferrous metals, nanotechnology in metallurgy, materials science, recycling of industrial waste

Alexandr N Zadiranov

Peoples’ Friendship University of Russia (RUDN University)

Email: zadiranov@mail.ru
6, Miklukho-Maklaya str., Moscow, 117198, Russian Federation

Doctor of Technical Sciences, Professor of the Department of Architecture and Construction, Peoples’ Friendship University of Russia. Research interests: metallurgy of ferrous and non-ferrous metals, nanotechnology in metallurgy, materials science, recycling of industrial waste, foundry

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Copyright (c) 2018 Malkova M.Y., Zadiranov A.N.

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