Advanced Technologies for High Efficiency of Copper-nickel PGM-containing Ore Processing
The paper presents the results of experimental investigations of the effect by high-power nanosecond electromagnetic pulses (HPEMP) on change of surface composition, physical-chemical and flotation properties of pyrrhotite, and search of optimal combination of flotation reactants providing increase of metal extraction from disseminated copper-nickel ores.Preliminary electropulse effect on products before flotation allows to create optimal conditions for flotation separation of pentlandite and pyrrhotite owing to forming the new phases and defects on the surface of sulphides.It was established, that the yield of monomineral fractions of pyrite, pyrrhotite and chalkopyrite increases by 5%～15%, compared with flotation with one butyl xanthenes (BX), during usage of combination of thionic carbamate (isopropylmethylthionocarbamate (ITC) or isopropylethylthionocarbamate (Z-200) with butyl xanthate (BX). Sorption of investigated reactants and strength of their fixing on the surface of minerals are examined; it helped to reveal the cause of rise of floatability of sulphide minerals for the case of combination of reactants.Preliminary high-pulse processing and reactant conditions with usage of combination of thionic carbamate and xanthate have been tested on the sample of disseminated copper-nickel ore from Norilsk region.
High-power nanosecond electromagnetic pulses Flotation New phases Disseminated copper-nickel ore
I.A. Khabarova V. V. Stepanova
Research Insdtute of Comprehensive Exploitation of Mineral Resources, Russian Academy of Sciences,IPKON RAS, Moscow, Russia
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
1671-1678
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）