Investigation of Chalcopyrite and Pyrite Flotation in High Salinity Water

  • Author / Creator
    Zhang, Mingbo
  • In this study, the flotation behaviors of chalcopyrite and pyrite single and mixed minerals in Milli-Q water, NaCl solution, and sea water were investigated. The performance of different collectors was evaluated. Collectorless flotation was also studied under potentiostatic control to explore the flotation behavior of chalcopyrite, pyrite and their mixture, which provides an insight and opportunity for the development of new technology from high salinity water to effectively separate chalcopyrite and pyrite. The surface properties and mechanism of pyrite flotation were investigated by a range of different techniques such as SEM, EDX, ToF-SIMS, and zeta potential measurement. The research showed substantial slime coating on chalcopyrite and pyrite surface in sea water at high pH in the presence of collector. In conclusion, this study improves our fundamental understanding of sulfide mineral flotation in sea water and provides basic knowledge on how to depress pyrite flotation in sea water in order to produce high-grade concentrates of valuable minerals such as chalcopyrite.

  • Subjects / Keywords
  • Graduation date
    Fall 2015
  • Type of Item
  • Degree
    Master of Science
  • DOI
  • License
    This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.