Development of a New Combined Process for Nickel and Cobalt Recovery from Ferriferous Laterite Ores
- Authors: Sadykhov G.B.1, Zablotskaya Y.V.1, Anisonyan K.G.1, Khasanov M.S.1, Olyunina T.V.1, Goncharov K.V.1, Kop’ev D.Y.1
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Affiliations:
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
- Issue: Vol 2019, No 3 (2019)
- Pages: 197-203
- Section: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/173095
- DOI: https://doi.org/10.1134/S0036029519030108
- ID: 173095
Cite item
Abstract
The studies on the development of a new process for nickel and cobalt recovery from ferriferous laterite ores via a reducing roasting–sulfuric acid leaching are carried out. The conditions for the reducing roasting of the ores in the temperature range from 400 to 950°C and for the sulfuric acid leaching of the cinder (after cooling without air and passivation in water) at pH 1.4–3.0 and the weight ratio of the solid to liquid phases 1 : (3–4) in the temperature range from 25 to 95°C for 0.5–4 h are studied. General regularities of the reducing roasting of the ores with the selective metallization of nickel and cobalt (where the formation of wustite (FeO) is excluded; i.e, Fe2O3 is reduced to Fe3O4) are revealed. The conditions for the leaching of the cinder by sulfuric acid with nickel and cobalt recovery into a solution are established. The optimum parameters of these processes that make it possible to achieve high parameters for the recovery of nickel (87–99%) and cobalt (80–91%) into a solution at the sulfuric acid consumption within 90–140 kg/t ore are determined.
About the authors
G. B. Sadykhov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Author for correspondence.
Email: Sadykhov@imet.ac.ru
Russian Federation, Moscow, 119991
Yu. V. Zablotskaya
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: Sadykhov@imet.ac.ru
Russian Federation, Moscow, 119991
K. G. Anisonyan
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: Sadykhov@imet.ac.ru
Russian Federation, Moscow, 119991
M. Sh. Khasanov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: Sadykhov@imet.ac.ru
Russian Federation, Moscow, 119991
T. V. Olyunina
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: Sadykhov@imet.ac.ru
Russian Federation, Moscow, 119991
K. V. Goncharov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: Sadykhov@imet.ac.ru
Russian Federation, Moscow, 119991
D. Yu. Kop’ev
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: Sadykhov@imet.ac.ru
Russian Federation, Moscow, 119991