SAG AND BALL MILL EFFECTS FROM ORE SORTING SYSTEM IMPLEMENTATION

J.STARKEY1, B. HILSHER2, S. REEVES3 and J. HEDDERSON4

J. Starkey (1), B. Hilscher (2), S. Reeves (3) and J. Hedderson (4) 

1. Sacré-Davey Engineering, and Starkey & Associates Inc, Oakville, Canada. Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

2. Sacré-Davey Engineering, Oakville, Canada

3. Sacré-Davey Engineering, Oakville, Canada

4. Sacré-Davey Engineering, Oakville, Canada

Canadian Mineral Processors Conference, 22-24 January 2019, Ottawa, Canada

ABSTRACT

As ore sorting becomes more common, it is important to quantify its impact on comminution circuits in order to precisely predict its effect on throughput, grind, and mill operating conditions. Since sulphides and other valuable minerals are often softer then the surrounding waste rock, the ore kept by a sorting system is typically softer than the average ore. In order to accurately forecast production, new measurements of hardness need to be performed on the new concentrated mill feed. This paper proposes a methodology to examine this effect quantitatively at an early stage of project development using the SAGDesign test. 

ACKNOWLEDGEMENTS

CEEC acknowledges and thanks the CMP Society for organising the 51st Canadian Mineral Processors Conference. Conference proceedings can be purchased here.