Introduction to the stirred milling of nickel laterites for upgrading nickel

CIM Journal ◽  
2015 ◽  
Vol 6 (1) ◽  
pp. 15-26
Author(s):  
L Tong ◽  
B. Klein ◽  
M. Zanin ◽  
W. Skinner ◽  
K. Quast ◽  
...  
Keyword(s):  
Nickel Laterites

Atmospheric acid leaching of nickel laterites review

2008 ◽  
Vol 91 (1-4) ◽  
pp. 35-55 ◽  
Author(s):  
R.G. McDonald ◽  
B.I. Whittington
Keyword(s):  
Acid Leaching ◽  
Nickel Laterites

Acid Leaching of Nickel Laterites with Jarosite Precipitation

Ni-Co 2013 ◽  
2013 ◽  
pp. 74-95
Author(s):  
David T White ◽  
James D Gillaspie
Keyword(s):  
Acid Leaching ◽  
Nickel Laterites

Ore mineralogy of nickel laterites: controls on processing characteristics under simulated heap-leach conditions

2011 ◽  
Vol 58 (7) ◽  
pp. 725-744 ◽  
Author(s):  
H. R. Watling ◽  
A. D. Elliot ◽  
H. M. Fletcher ◽  
D. J. Robinson ◽  
D. M. Sully
Keyword(s):  
Heap Leach ◽  
Ore Mineralogy ◽  
Nickel Laterites

Existence of Maghemite and Trevorite in Nickel Laterites

2013 ◽  
Vol 34 (5) ◽  
pp. 304-319
Author(s):  
Geraldo Magela da Costa ◽  
Danielly Juliana Figueiredo Couto ◽  
Francisco Pires Monteiro de Castro
Keyword(s):  
Nickel Laterites

The Microbial Assisted Leaching of Nickel Laterites Using a Mixed Culture of Chemolithotrophic Microorganisms

2009 ◽  
Vol 71-73 ◽  
pp. 493-496 ◽  
Author(s):  
Sehliselo Ndlovu ◽  
Geoffrey S. Simate ◽  
Mariekie Gericke
Keyword(s):  
Citric Acid ◽  
Optimum Conditions ◽  
Nickel Laterite ◽  
Bacterial Leaching ◽  
Bacterial Oxidation ◽  
Nickel Recovery ◽  
Initial Ph ◽  
Chemolithotrophic Bacteria ◽  
Nickel Laterites ◽  
Primary Oxidation

Nickel laterite contains metal values but is not capable of participating in the primary chemolithotrophic bacterial oxidation because it contains neither Fe2+ iron nor substantial amount of reduced sulphur. Its metal value can, however, be recovered by allowing the primary oxidation of FeS2, or similar iron/sulphur minerals to provide H2SO4 acid solutions, which solubilise the metal content. This study investigated the possibility of treating nickel laterites using chemolithotrophic microorganisms. Preliminary studies conducted using H2SO4 acid, citric acid and acidified Fe2(SO4)3 gave an insight on the use of chemolithotrophic bacteria in this process,. Results showed that H2SO4 acid performed better, in terms of nickel recovery, than citric acid or acidified Fe2(SO4)3. In the bacterial leaching test works, mixed cultures of Acidithiobacillus ferrooxidans, Acidithiobacillus caldus and Leptospirillum ferrooxidans were used in the presence of elemental sulphur and FeS2 as energy sources. The sulphur substrate exhibited better effects in terms of bacterial growth, acidification and nickel recovery than the FeS2 substrate. Using response surface methodology, the theoretical optimum conditions for maximum nickel recovery (79.8%) within the conditions studied was an initial pH of 2.0, 63μm particle size and 2.6% pulp density.

Co-recovery of Chromium from Domestic Nickel Laterites

JOM ◽  
1987 ◽  
Vol 39 (1) ◽  
pp. 21-25 ◽  
Author(s):  
W. W. Harvey ◽  
M. A. Hossain
Keyword(s):  
Nickel Laterites
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