Using Piston Press Tests for Determining Optimal Energy Input for an HPGR Operation

July 21, 2016 | HPGR Evaluation

Multiple trade-off studies have shown that grinding circuits with high pressure grinding rolls (HPGR) can be more energy efficient than the circuits with semi-autogenous (SAG) mills. However, such studies are difficult to conduct because the current practice of sizing and selecting the HPGR requires large samples for pilot-scale testing that are expensive and difficult to […]

Energy and Cost Comparisons of HPGR based circuits with the SABC Circuit installed at the Huckleberry Mine

May 10, 2016 | HPGR Evaluation, Process Development

This CEEC Medal-winning paper summarizes a comprehensive energy and cost study comparing an existing SAG mill based circuit at Huckleberry Mine  with two proposed circuits involving comminution technologies which are associated with energy efficiency: high pressure grinding rolls (HPGR) and high speed stirred mills. Results showed that the HPGR – ball mill circuit achieved a 21% reduction in […]