Category: Structural Remediation

Project Summary

The CHPP was losing coal due to poor floatation performance - New pumps and Sumps required



Project Brief

Increase lost coal production due to poor flotation performance, not enough floatation and thickener capacity - 1.5% lost yield.


  • Project aligned with structural integrity issues of tailings and concentrate sump- holed and risk failure
  • Scope of project was to remove existing sumps and upgrade with larger sumps as well as additional pumps for redundancy
  • Scope also allowed for filtration and Teetered Bed Circuit modifications to ensure lowest ash product in floatation/filtration circuit
  • Significant works carried out during plant operation which added to the complexity of the project execution - balance of work complete within a 2 week shutdown period
  • Project brief also included all project management, tender preparation and assessment, contractor selection processes and execution
  • Budget - A$6 million 


  • New pumps and sumps, filtration circuit modifications - froth volume unconstrained

Business Outcomes

  • 1.5% increase in yield
  • Froth volume unconstrained increasing fine coal yield
  • Successful project completion, on budget and on time
  • Zero incidents