Transforming the effectiveness of a HPGR circuit at Anglo Platinum Mogalakwena
Paper in proceedings, 2011
was one of the first three hard rock mineral processing
applications to utilise a HPGR circuit in preference to a
SAG milling circuit. This was driven by the extreme
competence of the ore that had given rise to throughput
issues on the original South plant.
Despite more than adequate capacity and performance
of the individual comminution units, the circuit has
struggled to obtain full design capacity. A thorough
review of the integrated performance of the circuit
revealed a wide range of bottlenecks and underutilised
parts of the circuit.
Interestingly, the major opportunities lie in materials
handling issues and mismatch of loads about the
circuit. This paper presents the high-level outcomes
and the associated opportunities, and is pertinent to all
new HPGR circuit designs.