Danfeng Xu, Lian X. Liu
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 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 dryness. However, no significant effect of drying on the agglomerates (measured by agglomerate slump) was found in column leaching. For G type, mixing it with high bulk density ores during agglomeration is recommended to enhance its robustness during leaching process.
@article{13f17f11-8831-42e5-b556-7486e95f4cce,
title={Effect of nickel laterite agglomerate pr},
author={Danfeng Xu and Lian X. Liu},
year={2026},
language={en}
}TY - JOUR TI - Effect of nickel laterite agglomerate pr AU - Danfeng Xu AU - Lian X. Liu PY - 2026 LA - en ER -
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