The Improvement of Flotation Performance of Difficult-to-float Copper Oxide Ore
Tangdan copper oxide deposit, the largest independent copper oxide deposit in China so far, is located in the northeast of Yunnan province, southwest of China. The ore from this deposit is characterized by: low grade, high oxidation ratio, and fine-grained disseminated, resulting in poor flotation recovery. The analysis of plant flotation data reveals that the loss of copper minerals into tailings is mainly with coarse size fraction due to insufficient liberation and fine size fractions, especially minus 10 microns fraction, which proved to be very difficult-to-float with conventional flotation. In order to improve the performances of plant flotation of this ore, laboratory flotation tests were conducted with the pure malachite, which was the principle copper oxide mineral in Tangdan copper ore deposit. The results obtained suggested that a finer grinding (up to -325 mesh or even -400 mesh) be needed to decrease the loss with coarse size fraction, and vacuum flotation is a promising way for the recovery of the fine malachite effectively.
Difficult-to-float Copper oxide ore Flotation
D. W. Liu W. B. Zhang J. J. Fang X. Shang L. J. Sun X. L. Lu
Mineral Processing Engineering Department, Faculty of Land Resources Engineering,Kunming University of Science and Technology KUST, Yunnan, China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
1420-1428
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）