Minimising Copper Activation of Iron Sulfide Minerals during Grinding

摘要：

High flotation of iron sulfide minerals at high pH values in copper ores is mainly due to the activation of these minerals by copper species dissolved from copper sulfide minerals during grinding.Several methods have been tested to reduce this copper activation during grinding and therefore to depress iron sulfide flotation. They include grinding the minerals at high pH values or with a less reactive medium such as high chrome, and addition of a thiol collector or copper complexant during grinding. The efficacy of these methods in the flotation of a copper ore was tested against more common methods of depression of iron sulfide flotation. The mechanism of iron sulfide depression in these methods was also investigated.

关键词： Flotation Pyrite Pyrrhotite Copper activation Collector Copper complexant

作者: D. Fornasiero S. H. He

作者单位: Ian Wark Research Institute, University of South Australia, Mawson Lakes Campus, Australia

会议类型: 国际会议

会议名称: XXIV International Mineral Processing Congress(第24届国际矿物加工大会)

会议地点: 北京

会议语种:英文

页码: 1048-1053

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）