Our client is one of the world’s largest gold mining companies with operations globally and in Australia. Their portfolio of predominantly low cost, long life mines represents more than 25 years of production.
A ball mill is used to grind, blend and even mix stockpiled ore into smaller pieces of a uniform size. In the case of a surge event, a large amount of unprocessed ore and water are suddenly ejected from the mill resulting in a temporary decrease in throughput and mine productivity. The objective was to identify key drivers and/or warning indicators of surging events and be able to predict them ahead of time to facilitate early intervention and minimise disruptions to productivity.
Following extensive exploratory data analysis and processing, machine learning algorithms were applied to the data to forecast surges across a number of different time horizons, resulting in:
GEAR was able to improve asset productivity by being able to predict and avoid future surges. The results identified a variable importance scale to identify key contributing factors which would enable early intervention.