Outotec's leading-edge SX-EW technology is helping to maximize return on investment at the world's largest SX facility, Grupo México's ESDE III copper SX-EW (solvent extraction-electrowinning) plant in Buenavista, Mexico. Grupo México's Buenavista plant is located close to the town of Cananea in northern Mexico. Prior to the ESDE III project, the Buenavista plant had two SX-EW plants, ESDE I and ESDE II, with a total annual copper cathode production capacity of 55,000 tons. In early 2012 the company decided to expand the plant's capacity to produce copper cathodes via a leaching-SX-EW process. In April 2012 Grupo México signed a contract with Outotec for delivery of a copper SX-EW technology package for the ESDE III plant, with an annual copper cathode production capacity of 120,000 tons.
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