Institute of Comprehensive Exploitation of Mineral Resources of RAS (Russia):

Kozlov A. P., Deputy Director on Scientific Work, Doctor of Engineering, kozap@mail.ru,

Matveeva T. N., Head of Laboratory, Doctor of Engineering

Chanturiya V. A., Chief Researcher, Member of RAS

Institute of Geology and Mineralogy of Siberian Branch of RAS (Russia):

Tolstykh N. D., Leading Researcher, Doctor of Geology and Mineralogy

TOMS (Russia):

Fedotov K. V., General Director, Doctor of Engineering

The article provides an analysis of the research project carried out on platiniferous dunites of the Svetlobor placers and identifies the basic typomorphic indications of the commercially viable mineral parageneses. The platiniferous ore mineralization is characterized by the following distinctive features: wide ranging composition of ferro-platinum alloys; high content of the ore system in Os, Ir, Rh and active S and As; inclusions of Fe-Ni sulfides and platinum intergrowth with magnetite. Over 80 % of mineral granules of the MPG are –100 mcm in size, which may be responsible for significant platinum losses in the process of gravity separation and requires additional extraction to recover small size and fine platinoids from tailings and slimes. It also provides summarized results of lab tests, run on a small sample of platiniferous dunites to validate a flowsheet involving step grinding and gravity separation of ore on a Knelson KC-MD centrifugal concentrator for samples of different sizes and flotation of tailings with new reagents — DEDTCm and Hostaflot M-91 — to recover product from platinoid fines.

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9. Matveeva T. N. Nauchnoye obosnovaniye vysokoeffektivnykh metodov flotatsionnogo izvlecheniya zoloto- i platinosoderzhashchikh sulfidnykh mineralov iz trudnoobogatimykh rud. Avtoreferat dissertatsii... doktora tekhnicheskikh nauk (Scientific foundation of high-performance methods of gold- and platiniferous sulfide minerals flotation extraction from complex ores. Author’s abstract of Doctor’s dissertation). Institute of Comprehensive Exploitation of Mineral Resources of RAS. Мoscow, 2011, 38 p.