Publishing House SB RAS:

Publishing House SB RAS:

Address of the Publishing House SB RAS:
Morskoy pr. 2, 630090 Novosibirsk, Russia



Advanced Search

Chemistry for Sustainable Development

2010 year, number 3

Technological Aspects of Processing Rare Metal Ores of the Chuktukon Deposit

V. I. Kuzmin1, G. L. Pashkov1, V. N. Kuzmina1, S. N. Kalyakin1, L. I. Dorokhova1, V. F. Pavlov2, V. G. Lomaev3
1 Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences
2 Special Designing and Technological Bureau "Nauka", KSC of Siberian Branch of the Russian Academy of Sciences
3 Geokomp Ltd
kuzmin_vi@mail.ru
Keywords: rare metal ores, rare earth elements, niobium, leaching, extraction, reduction
Pages: 331-338

Abstract

Technological problems of processing rare metal ores of the Chuktukon deposit (Krasnoyarsk Territory) are considered. Oxide ferrimanganese ores contain 3-7 % earth oxides in the form of phosphates (monazite, florencite) and 0.5-1 % niobium oxide (chalcolamprite) and are practically undressable. The possibility of their direct chemical processing was studied. A scheme including autoclave nitric acid leaching and extraction of rare earth elements, reductive treatment of leaching tailings and isolation of niobium concentrate into the non-magnetic fraction was proposed. According to this scheme, nitrate solutions are subjected to thermal decomposition in order to recover nitric acid. The pyrometallurgical process of ore reduction leading to cast iron and rare metal products was analyzed. Process realization requires solution of complicated technological problems in obtaining high-quality products.