Effect of nickel laterite pellet properties on its strength and leaching performance

Liu, Lian X., Zhou, Lin and Addai-Mensah, Jonas (2011). Effect of nickel laterite pellet properties on its strength and leaching performance. In: Chemeca 2011 Proceedings. Chemeca 2011: Australasian Conference on Chemical Engineering, Sydney, Australia, (1-11). 18-21 September 2011.

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Name Description MIMEType Size Downloads
Author Liu, Lian X.
Zhou, Lin
Addai-Mensah, Jonas
Title of paper Effect of nickel laterite pellet properties on its strength and leaching performance
Conference name Chemeca 2011: Australasian Conference on Chemical Engineering
Conference location Sydney, Australia
Conference dates 18-21 September 2011
Proceedings title Chemeca 2011 Proceedings
Place of Publication Barton, ACT, Australia
Publisher Engineers Australia
Publication Year 2011
Sub-type Fully published paper
ISBN 9780858259225
Start page 1
End page 11
Total pages 11
Collection year 2012
Language eng
Abstract/Summary In this work, nickel laterite pellets with controlled mass, porosity and binder (sulphuric solution and water) were made by using a pellet press and either tap water or 44 w/w % H2SO 4 as a binder. The pellets were then either oven-dried or ambient-dried for a certain time and its mechanical strength were measured. Leaching tests were also conducted on single pellet with irrigation of sulphuric acid solution from the top of the pellet and the leached out solution were collected and Ni recoveries were analysed. The time taken for the pellets to disintegrate during leaching was recorded. It was observed that the mechanical strength of the pellet is directly related to its dryness, with completely dried pellets having much higher strength. The dry pellet strength depended upon by the binder content and porosity. The time taken for the pellets to disintegrate during leaching increased with increasing mechanical strength. In comparison with sulphuric solution-bound pellets at the same condition, with water-bound pellets exhibit higher mechanical strength. Although the Ni leaching rate for water-bound air-dried pellets was low at the beginning, the process continued for more than 200 h without disintegration, with 70% of Ni recovered.
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Paper number 130. Title of paper listed as "Effect of Nickel Laterite Agglomerate Properties on its Strength and Leaching Performance" in Programme Abstract and Proceedings table of contents but in fulltext published paper the title is "Effect of nickel laterite pellet properties on its strength and leaching performance"

Document type: Conference Paper
Collections: School of Chemical Engineering Publications
Official 2012 Collection
 
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Created: Thu, 08 Mar 2012, 11:15:43 EST by Dr Lian Liu on behalf of School of Chemical Engineering