Multi-scale investigation of applying secondary effluent in sulfide flotation

Jinhong Zhang, Wei Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

The fact that froth flotation consumes a large amount of water, even though it is one of the most efficient methods to process sulfide minerals, brings a higher pressure from the sustainable development due to increasing population and its demand of more portable water. Pioneering work of applying secondary effluent in sulfide flotation (Fisher and Rudy, 1976) showed a 2.4% reduction in Cu recovery and 16.2% reduction in molybdenum recovery when secondary effluent was used. It was also postulated that the organic carbon, in the form of humic acid, in the effluent was the most deleterious constituent causing the losses in metal recovery. We carried out a systemic investigation in both microscopic and macroscopic aspects on the possibility of using secondary effluent in sulfide flotation. AFM images showed that collectors adsorbed on mineral surface (chalcopyrite and molybdenite) in a similar manner in both clean water and treated secondary effluent. Lab flotation tests showed that the Cu and Mo recoveries obtained with treated secondary effluent were comparable to those obtained with tap water. The findings of present multi-scale investigation will help provide a cost-efficient solution to treat low quality water and mitigate its impact, and finally succeed technically in applying secondary effluent in sulfide flotation.

Original languageEnglish (US)
Title of host publicationWater in Mineral Processing - Proceedings of the 1st International Symposium
Pages279-290
Number of pages12
StatePublished - May 14 2012
Event1st International Symposium on Water in Mineral Processing, Held During the 2012 SME Annual Meeting - Seattle, WA, United States
Duration: Feb 19 2012Feb 22 2012

Publication series

NameWater in Mineral Processing - Proceedings of the 1st International Symposium

Other

Other1st International Symposium on Water in Mineral Processing, Held During the 2012 SME Annual Meeting
CountryUnited States
CitySeattle, WA
Period2/19/122/22/12

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geology

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  • Cite this

    Zhang, J., & Zhang, W. (2012). Multi-scale investigation of applying secondary effluent in sulfide flotation. In Water in Mineral Processing - Proceedings of the 1st International Symposium (pp. 279-290). (Water in Mineral Processing - Proceedings of the 1st International Symposium).