Research on Flotation Performances of Polymorphic Pyrrhotite
There are three polymorphic modifications in pyrrhotite (monoclinic, hexagonal and orthorhombic), with monoclinic and hexagonal polymorph being more abundant. The floatability of different crystalline structures of pyrrhotite (monoclinic and hexagonal) is studied in this paper. It is shown that the floatability difference of monoclinic and hexagonal is obvious and that the flotation recovery of monoclinic pyrrhotite is greater than that of hexagonal pyrrhotite using different collectors.Using butyl dithiophosphate as collector, the flotation recovery of pyrrhotite is higher than when sodium diethyl dithiocarbamate and sodium butyl xanthate are used as the collectors. Monoclinic and hexagonal pyrrhotites are more easily activated by Cu2+ in acidic conditions than in alkaline conditions, while Cu2+ can not activate hexagonal pyrrhotite when sodium diethyldithiocarbamate was used as the collector. By the measurement of contact angle, it is indicated that monoclinic and hexagonal pyrrhotite float well and are easily activated by Cu2+ when dithiophosphate was used as the collector. Using sodium diethyl dithiocarbamate as a collector, the flotation behavior of pyrrhotite was investigated. The relationship between potential and pH range for pyrrhotite flotation was established. The results show that the flotation of pyrrhotite is dependent on pulp potential at certain pH values.
Flotation Monoclinic and hexagonal pyrrhotite Pulp potential Contact angle
M. F. He W. Q. Qin W. Z .Li Y. J. Chen C. H. Lai
School of Mineral Processing and Bioengineering, Central South University, Changsha, China School of Mineral Processing and Bioengineering, Central South University, Changsha, China MengZ Min MengZi Mining and Metallurgy Corp., Mengzi
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
1153-1160
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）