Sherman M1, Collins A2,
Presented at World Gold 2019
The ever changing demands of providing operating teams with grinding circuits that meet their needs has resulted in equipment suppliers offering a broader range of grinding equipment and researchers investigating more efficient methods of reducing the size of ore.
This paper presents Fluor’s learnings from grinding design and optimisation work carried out over the last decade, which includes the design and construction of the world’s largest High Pressure Grinding Rolls (HPGR) based grinding circuits and the optimisation of Semi-Autogenous Grinding (SAG) mill liner and grate design at a number of sites. In addition, this paper also presents emerging opportunities for reducing grinding operating costs by combining established size reduction technologies, such as HPGR, ball milling and stirred milling, to generate a superior processing outcome for the operator.
Fluor thanks the operating, technical,and leadership teams of the Cowal, Telfer, Rosebel, and Batu Hijau processing plants for their permission to reference their operating data in this pape