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:: IsaMillsTM Selected for McArthur River Mine Expansion
The expanded use of Xstrata Technology’s IsaMillsTM will support a planned increase in production at Xstrata Zinc’s McArthur River Mine (MRM) in Australia as part of its Phase 3 Development Project.
As part of the expansion, MRM has ordered two additional M10,000 IsaMillsTM, to complement their eight existing IsaMillsTM which are used in both the primary grinding and regrinding circuits of the processing facility.
Xstrata Zinc Australia Chief Operating Officer Brian Hearne said the latest increase in IsaMillsTM follows a similar expansion in 2007 which supported a 39% increase in production capacity at that time. “We find the IsaMillsTM to be simple and functional from an operator’s point of view which for us supports low cost and reliable production," Mr Hearne said. “The IsaMillsTM presented the best option to get the volumetric efficiency, grind sizes and energy efficiency we are now looking for in the Phase 3 Development Project."
IsaMillsTM were developed to be much more energy efficient than other grinding technologies and to improve flotation recovery due to inert attrition grinding. The two new M10,000 IsaMillsTM will increase primary grinding capacity at MRM by grinding from 150um (microns) to 45um (P80). They will take MRM to a complement of ten IsaMillsTM, six M3000’s and four M10,000’s, undertaking a range of ultrafine, fine grinding, and coarse grinding duties.
Xstrata Technology will supply the IsaMillsTM for the project, as well its proprietary IsaChargerTM, for controlled addition of fine ceramic media to the mills. The mills are expected to be commissioned in the second half of 2013.
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