Selective precipitation of mixed nickel–cobalt hydroxide

Harvey, Robin, Hannah, Robert and Vaughan, James (2011) Selective precipitation of mixed nickel–cobalt hydroxide. Hydrometallurgy, 105 3-4: 222-228. doi:10.1016/j.hydromet.2010.10.003

Author Harvey, Robin
Hannah, Robert
Vaughan, James
Title Selective precipitation of mixed nickel–cobalt hydroxide
Journal name Hydrometallurgy   Check publisher's open access policy
ISSN 0304-386X
Publication date 2011-01
Year available 2010
Sub-type Article (original research)
DOI 10.1016/j.hydromet.2010.10.003
Volume 105
Issue 3-4
Start page 222
End page 228
Total pages 7
Place of publication Amsterdam, The Netherlands
Publisher Elsevier
Collection year 2011
Language eng
Abstract The precipitation parameters of mixed hydroxide precipitate (MHP) using caustic calcined magnesia were evaluated at simulated industrial conditions using a mixed sulphate–chloride feed solution and fine magnesia powder. Controlling the rate of magnesia addition was found to decrease the manganese content of the precipitate but the benefit was minimal. Thermodynamic analysis combined with oxidation–reduction potential measurements suggests that some of the manganese is reporting to the solids by an oxidative precipitation reaction. The oxidative precipitation of manganese in air was confirmed experimentally. Contacting MHP with feed solution was found to substantially improve the solids' nickel and cobalt grade while decreasing the manganese and magnesium content. Precipitate contacting with the feed solution also resulted in a higher concentration of sulphate and chloride in the precipitate.
Keyword Nickel–cobalt hydroxide
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 15 October, 2010.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2011 Collection
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 11 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 11 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 01 Feb 2011, 10:28:39 EST by Dr James Vaughan on behalf of School of Chemical Engineering