English Español Français Our Expertise Projects Careers About Us Phoenix Mill Expansion Newmont Mining Corporation | United States | 2011–2012 33,700 to 48,000 tpd increase in throughput 2x rougher flotation retention time Increased capacity in the existing grinding cyclones Increased capacity in the existing deslime cyclones Challenges The mill struggled with ore variability and hardness, producing a copper concentrate with gold and silver credits that decreased throughput, and ultimately reduced metal and concentrate production. One of the main challenges of this brownfield operation was installing the circuits within existing process infrastructures without disturbing ongoing operations. Integrating the new circuits required a lot of planning to ensure the scheduled shutdown and process commissioning was kept to a minimum. Solutions Provided detailed engineering, procurement assistance, and field support for the project. A two-phased expansion of the mill facilitated the increased throughput. Phase 1 added a new secondary crushing and screening circuit to decrease feed particle size to the SAG mill. Phase 2 expanded the grinding, rougher flotation, and tailings deslime areas, increasing capacity in the existing grinding cyclones and the deslime cyclones, and doubling the rougher flotation retention time. Highlights Increased overall mill throughput from 33,700 to 48,000 tons per day Increased capacity in the existing grinding cyclones Doubled the rougher flotation retention time and increased the capacity in the existing deslime cyclones Project numbers US$8.5 million 33,700 to 48,000 tpd increase in overall mill throughput Services & technologies provided Copper Engineering Procurement What's your challenge? Let's connect. Related projects Raglan Mine — Phase II Mining Projects 8H and 14 Canada Voisey's Bay Mine Expansion Canada Resolution Copper Mine — No. 9 Shaft Deepening Project Arizona, United States About Us About the Company Ethics Modern Slavery Act Statement News & Media Events & Conferences Publications Information for Suppliers to Hatch Have a Question? Contact Us Office Locations Find an Office Follow Us Subscribe to our Newsletter Subscribe © Hatch Ltd. Privacy Statement