US 12,378,636 B2
Process for recovering cobalt ion, nickel ion and manganese ion from metal-containing residues
Joaquin Hidalgo Betanzos, Donostia-San Sebastián (ES); Lourdes Yurramendi Sarasola, Donostia-San Sebastián (ES); Amal Inoka Siriwardana, Donostia-San Sebastián (ES); and Carmen Del Río Gaztelurrutia, Donostia-San Sebastián (ES)
Assigned to FUNDACION TECNALIA RESEARCH & INNOVATION, Donostia-San Sebastián (ES)
Appl. No. 18/017,828
Filed by FUNDACION TECNALIA RESEARCH & INNOVATION, Donostia-San Sebastián (ES)
PCT Filed Aug. 2, 2021, PCT No. PCT/EP2021/071574
§ 371(c)(1), (2) Date Jan. 24, 2023,
PCT Pub. No. WO2022/029081, PCT Pub. Date Feb. 10, 2022.
Claims priority of application No. 20382720 (EP), filed on Aug. 3, 2020.
Prior Publication US 2023/0304126 A1, Sep. 28, 2023
Int. Cl. C22B 7/00 (2006.01); C22B 3/00 (2006.01); C22B 47/00 (2006.01)
CPC C22B 23/0415 (2013.01) [C22B 7/007 (2013.01); C22B 23/0453 (2013.01); C22B 47/0063 (2013.01); C22B 47/009 (2013.01)] 16 Claims
 
1. A process for recovering one or more metal ions selected from the group consisting of Cobalt, Nickel, Manganese and a mixture thereof from a metal-containing residue comprising:
A) leaching a residue with a leaching solution comprising lactic acid to obtain a leaching mixture formed by a filtrate 1 comprising a Cobalt lactate, a Nickel lactate, a Manganese lactate or a mixture thereof and a solid cake 1;
B) separating the filtrate 1 from the leaching mixture obtained in step A);
C) precipitating the Cobalt lactate, Nickel lactate, Manganese lactate or a mixture thereof from the filtrate 1 obtained in step B) to obtain a precipitating mixture formed by a filtrate 2 and a precipitate 1 comprising the Cobalt lactate, the Nickel lactate, the Manganese lactate or a mixture thereof; and
D) separating the precipitate 1 comprising the Cobalt lactate, the Nickel lactate, the Manganese lactate or a mixture thereof from the precipitating mixture obtained in step C);
or alternatively,
A) leaching the residue with a leaching solution comprising lactic acid to obtain a leaching mixture formed by a filtrate 1 comprising the Cobalt lactate, the Nickel lactate, the Manganese lactate or a mixture thereof and a solid cake 1;
E) precipitating the Cobalt lactate, the Nickel lactate, the Manganese lactate or a mixture thereof from the filtrate 1 obtained in step A) to obtain a precipitating mixture formed by a filtrate 3 and a solid cake 2 comprising the Cobalt lactate, the Nickel lactate, the Manganese lactate or a mixture thereof; and
F) separating the solid cake 2 from the precipitating mixture obtained in step E); and
G) separating the Cobalt lactate, the Nickel lactate, the Manganese lactate or a mixture thereof from the solid cake 2.