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Vladimir Jokovic - The influence of ore blending on mill throughput - Cortez mine case study
The concept of mine-to-mill was established by the JKMRC approx 40 years ago and is well-known worldwide as a route to increasing mill throughput through more intensive blasting as the feed becomes more competent. The JKMRC was invited by the management of the Barrick-Cortez mine site in Nevada, USA to work closely with site to address the challenges of processing the different ore types from the new Cross roads pit. The ore is far more competent than previously mined ore, leading to the expected reduction in mill throughput. But on top of this, both the harder and softer ore types had reduced throughput with different bottlenecks between the SAG and ball mill. To address this, the group planned systematic surveys of pure ores and controlled blends as recommended, based on the earlier phases of work. The survey outcomes which demonstrated the immediate production payback have helped the Cortez Metallurgical team to convince the mining group to implement the proposed blending strategy. The results of that work will be presented.

Sep 17, 2021 09:00 AM in Brisbane

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