Process Mineralogy of the Malmyzh Deposit
M. A. Gurman, L. I. Shcherbak
Institute of Mining, Far East Branch, Russian Academy of Sciences, Khabarovsk, 680000 Russia
Keywords: Gold-copper-porphyry ore, chalcopyrite, pyrite, bulk flotation, copper flotation cycle, concentrate, recovery, copper, gold, silver
Abstract
The article describes the studies into the mineralogy and process properties of ROM gold-copper-porphyry ore from the Svoboda site of the Malmyzh deposit in the Khabarovsk Krai. The tests and analysis reveal the structure and texture, and mineral composition of the ore, as well as the occurrence forms of gold and silver. The ore characteristics which govern the difficulty of the selective flotation are determined. Efficiency of Cu, Au and Ag extraction in the bulk and copper flotation cycles is described, and the causes of loss of the minerals are discussed. The resultant copper concentrate contains gold and silver, while the presence of Bi, Te, Se and admixture of In, Cd in chalcopyrite add to the value of the concentrate. Magnetite extracted from the bulk flotation tailings contain some platinum (0.5-2.0 µm) and admixtures of Ti, V, Mn, Cr and Cu.
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