University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Effect of Nickel laterite agglomerate properties on their leaching performance

Xu, D, Liu, LX, Quast, K, Addai-Mensah, J and Robinson, DJ (2013) Effect of Nickel laterite agglomerate properties on their leaching performance Advanced Powder Technology, 24 (4). pp. 750-756.

Full text not available from this repository.

Abstract

Heap leaching is a widely used extraction method for low-grade minerals including nickel and cobalt. Agglomeration of fine mineral particles as a precursor to heap leaching is an important means of enhancing leaching rates and metal recoveries. Single pellet leaching behaviour of three nickel laterite ores, namely siliceous goethitic (SG), goethitic (G) and saprolitic (SAP) was investigated to assess the effect of pellet properties (binder type, binder content, porosity and dryness) on its stability, initial leaching rate and maximum Ni recovery. The column leaching performance of agglomerates of the same ores was also investigated. Both single pellet and column leaching tests showed that the ore mineralogy played a major role in the Ni extraction rate, with G-type of ore the lowest. The Ni extraction rate was also found to be directly related to the pellet/agglomerate dryness and the highest rate was obtained at an intermediate degree of dryness due to the better wetting and diffusion of acidic lixiviant into the pores in between the particles. However, no significant effect of drying on the stability of the agglomerates (measured by agglomerate slump in the column) was found in column leaching. For G type of ore, mixing it with high clay ores during agglomeration is recommended to enhance its robustness during leaching process.

Item Type: Article
Subjects : Chemical and Process Engineering
Authors :
NameEmailORCID
Xu, DUNSPECIFIEDUNSPECIFIED
Liu, LXl.x.liu@surrey.ac.ukUNSPECIFIED
Quast, KUNSPECIFIEDUNSPECIFIED
Addai-Mensah, JUNSPECIFIEDUNSPECIFIED
Robinson, DJUNSPECIFIEDUNSPECIFIED
Date : July 2013
Identification Number : https://doi.org/10.1016/j.apt.2013.03.013
Copyright Disclaimer : © 2013 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:55
Last Modified : 18 May 2017 12:53
URI: http://epubs.surrey.ac.uk/id/eprint/840831

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800