Fundacíon Tecnalia Research & Innovation

Amal Inoka Siriwardana

Joaquin Hidalgo Betanzos

Lourdes Yurramendi Sarasola

Jokin Hidalgo Betanzos

Carmen Del Río Gaztelurrutia

Laura SÁnchez Cupido

Francisco Javier Nieto Maestre

The present invention relates to a process for recovering one or more metal ions selected from the group consisting of Cobalt, Nickel, Manganese and a mixture thereof from metal-containing residues comprising: A) leaching the residue with a leaching solution comprising lactic acid to obtain a filtrateand a solid cake; B) separating the filtrate; C) precipitating the Cobalt lactate, Nickel lactate or Manganese lactate from the filtrateto obtain a filtrateand a precipitate; and D) separating the precipitate; or alternatively, A) leaching the residue with the leaching solution to obtain a filtrateand a solid cake; E) precipitating the Cobalt lactate, Nickel lactate or Manganese lactate from the filtrateto obtain a filtrateand a solid cake; and F) separating the solid cake; and G) separating the Cobalt lactate, Nickel lactate or Manganese lactate from the solid cake

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DONOSTIA-SAN SEBASTIÁN, Spain

Amal Inoka Siriwardana