This project seeks to vary parameters (trial use of blends, reaction time, reagent concentration, quantity of solid/reagent) used in traditional static testing (e.g. net acid generation and paste pH testing) to determine if they can be optimised for more efficient use in the field.
During 2016, a static blended leach test (BLT) was developed to explore options for improved waste rock pile design at the Savage River mine (Grange Resources). Specifically, the project aimed to determine which waste blend ratios would produce the ‘cleanest’ leachate, and if a static test could be used to determine this prior to establishing kinetic cells. Findings of the Savage River case-study were reported to Grange Resources, with results to be presented at the Process Mineralogy ’17 conference. A journal publication is also in preparation.
In addition, a total reflectance XRD PICOFOX, manufactured by Bruker, was trialled in September to assist with the rapid and accurate collection of water quality data. An analytical method was developed enabling researchers and students across Theme 3 to analyse acid mine drainage (AMD) impacted river waters from western Tasmania, as well as NAG pH test samples and kinetic cell leachates generated in various projects.