View article

The aim of this project is to assess the efficiency of pyrrhotite rich tailings desulfurization and its capacity to make mine operations more sustainable and respectful to the environment. The Raglan mine ore concentrator produces acid-generating tailings, which contain pyrrhotite, that need to be properly managed. Partial desulphurization of the total tailings produced at the end-circuit was investigated to assess the option of using desulphurized material as a component of a cover to control acid mine drainage (AMD) generation. The weathering and contaminant generation potential was investigated through kinetic testing. The objective of Part 1 of this study is to present results in terms of: i) physical, chemical, and mineralogical characterization of the Raglan Mine tailings; ii) optimization of the pyrrhotite flotation process; and iii) kinetic testing on the desulphurized tailings to predict their acid generating potential, as …