Lead and Zinc
With the Zinc Expansion Project, Lundin Mining expects to expand production from the existing mining areas and from the deeper, higher-grade zinc deposit Lombador Phase 2.
In May 2017, Lundin Mining announced the results of its feasibility study for the Neves-Corvo Zinc Expansion Project, confirming the strong project economics and demonstrating significant incremental value for their Neves-Corvo operations. Planning to expand the existing zinc plant from its current capacity of approximately 1.1 million tonnes per year to 2.5 million tonnes, along with further development of Lombador Phase 2, the company signed contracts with Metso in September for the purchase of a C120 jaw crusher, flotation cells and filter presses.
Ore from Lombador Phase 1 and 2 will be extracted using a new materials handling system, comprising a Metso C120 primary jaw crusher located on the 280-260 level. While developing LP2, the existing zinc plant will be expanded and upgraded. A new 8.5 MW SAG mill, previously purchased, will take care of primary grinding, while secondary grinding will be carried out using a repurposed existing mill ahead of new lead and zinc flotation cells. For this, Metso will deliver 19 RCS flotation cells, each with a capacity of 100 m³. Upgrades to lead thickening and filtration, water supply and reagent circuits will also be carried out. In this area, two new VPA filters will be installed.
"A better-designed flotation circuit and more filter capacity, along with other changes, will allow for consistently higher throughput. We're proud that Metso equipment has been chosen for the expanded and improved zinc plant," stated Miguel Santos, regional sales manager from Metso.
Delivery is planned for April 2018. Both surface and underground construction are forecast to be completed by Q3 2019, and production ramp-up should be completed by the end of that year.
About Somincor Neves-Corvo
Neves-Corvo is a copper and zinc mine, owned and operated by the Portuguese company Somincor, which is a subsidiary of Lundin Mining. It is situated approximately 220 km southeast of Lisbon in the Alentejo district in southern Portugal. The mine site lies some 15 km southeast of the town of Castro Verde and exploits five major orebodies from an underground mine. The ore is processed on-site, and tailings are disposed of in the Cerro de Lobo impoundment some 3 km from the plant. Concentrates are dispatched by rail and road for onward shipping to customers.
Caption: Metso provides C120 jaw crusher, flotation cells and filter presses for the Neves-Corvo Zinc Expansion Project.