Report summarySan Cristobal operates an open pit mine and a 53kt/d concentrator producing clean zinc and lead concentrates, both with silver content. The concentrates are shipped through the Mejillones port in Chile. One of the major challenges to increase or even maintain the milling capacity in San Cristobal is the hardness of the ore particularly the ore from the Jayula pit where the hardness reaches 70-90 mega Pascal vs 50 mega Pascal in the past. The Jayula mine was contributing as much as 60-70% of the mill feed in 2014. By the end of 2014 San Cristobal was able to implement a mine to mill optimisation operating strategy. This included ore blending at the mine and optimisation of the SAG mill which increased mill throughput by about 5-10%, reaching 52kt/d ore by the end of 2014.
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- San Cristobal zinc mine PDF - 795.70 KB 14 Pages, 8 Tables, 2 Figures
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