Pressure Acid Leaching of Nickel Laterites: A Review

  title={Pressure Acid Leaching of Nickel Laterites: A Review},
  author={Barry I. Whittington and D. Muir},
  journal={Mineral Processing and Extractive Metallurgy Review},
  pages={527 - 599}
  • B. Whittington, D. Muir
  • Published 1 October 2000
  • Chemistry
  • Mineral Processing and Extractive Metallurgy Review
Abstract A review of the literature over the past 30 years on the processing of nickel laterites by high temperature acid leaching has been carried out to provide a better understanding of the mineralogy, leaching process chemistry and effect of operating conditions on nickel recovery, residue properties and scaling. Particular attention is paid to the leaching experience of the commercial Moa Bay plant and to the recently reported testwork and flowsheets associated with the three Western… Expand
High pressure acid leaching of a refractory lateritic nickel ore
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Temperature influence of atmospheric acid leaching behaviour of saprolitic nickel laterite ore
Atmospheric acid leaching (AL) of low-grade lateritic ores may encounter serious difficulties due to the presence of high acid consuming serpentinized/clay minerals, leading to pulp gelation and poorExpand
Reductive acid leaching of laterite and metal oxides — A review with new data for Fe(Ni,Co)OOH and a limonitic ore
The reductive leaching of nickel laterite has attracted the interest of many researchers due to the enhanced kinetics of nickel and cobalt dissolution in the presence of acids and reducing agentsExpand
Atmospheric acid leaching mechanisms and kinetics and rheological studies of a low grade saprolitic nickel laterite ore
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A hydrochloric acid process for nickeliferous laterites
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Self-driven and efficient leaching of limonitic laterite with phosphoric acid
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Dissolution behaviour of a Turkish lateritic nickel ore
Abstract The atmospheric pressure sulphuric acid leaching characteristics of Adatepe (Eskisehir, Turkey) laterite ore that has recently been put into operation was investigated. The effects ofExpand
Leaching Kinetics and Mechanism of Laterite with NH4Cl-HCl Solution
Following the growing demand for Ni and Co and the dwindling supplies of sulfide nickel ore, attention has turned toward the more efficient exploitation and utilization of laterite ore. UsingExpand
Mineralogical characterisation of Indonesian laterites prior to and post atmospheric leaching
Abstract Nickel laterite is of increasing importance as an economically viable source of Ni. However, practical strategies for low cost atmospheric leaching of laterites have been hampered in part byExpand
Selective pressure leaching of Fe (II)-rich limonitic laterite ores from Indonesia using nitric acid
Abstract The selective extraction of nickel and cobalt over iron from an Indonesian limonitic laterite was investigated using nitric acid pressure leaching (NAPL). The mineralogical analysis showedExpand


Characterisation and acid pressure leaching of various nickel-bearing chromite overburden samples
Abstract In an earlier study it was found that additives were required for improving nickel recoveries from preconcentrated nickel-containing chromite overburden. With a view to confirming theExpand
Sulphuric acid pressure leaching of a limonitic laterite: chemistry and kinetics
Sulphuric acid pressure leaching of limonitic laterites is the process of choice to recover nickel and cobalt from equatorial lateritic ores, replacing the energy intensive pyrometallurgical methods.Expand
Sulfuric acid pressure leaching of nickeliferous limonites
This laboratory study examines the sulfuric acid pressure leaching characteristics of nickeliferous limonite samples from South New Caledonia. The effect of temperature (225°C to 300°C), acid-to-oreExpand
Acid pressure leaching of nickel-containing chromite overburden in the presence of additives
Leaching of beneficiated lateritic chromite overburden sample was carried out at 250-260°C with 0.3-0.4 g H 2 SO 4 /g of material. It was observed that in laboratory scale experiments, ∼ 67% nickelExpand
Control of autoclave scaling during acid pressure leaching of nickeliferous laterite ore
An operating problem encountered at the Moa Bay operation in Cuba, where nickeliferous laterite ore is processed by sulfuric acid pressure leaching, is the formation of alunite and hematite depositsExpand
Pressure acid leaching of laterites at 250 °C: A Solution chemical model and its applications
Laterite leach solutions were simplified to a ternary electrolyte system by lumping all divalent metal sulfates into one with the chemical and thermodynamic properties of MgSO4. The simplified leachExpand
Sulphuric acid leaching of cobalt-bearing manganese wad
Abstract Manganese wad from the Mt. Tabor region of Queensland, Australia, contains in excess of 1% cobalt with lesser amounts of nickel and copper. As such, it presents a significant cobaltExpand
Scale formation in a batch reactor under pressure acid leaching of a limonitic laterite
Abstract The formation of scale under sulphuric acid pressure leaching conditions of a limonitic laterite ore was investigated. Experiments were conducted using a batch titanium autoclave in order toExpand
The Hydrolysis of Ferric Sulphate Solutions at Elevated Temperatures
Abstract A recently developed process for the treatment of zinc leach residue involves dissolution in aqueous sulphuric acid. Soluble ferric ion is then hydrolyzed from the acidic solution either asExpand
Particulates in hydrometallurgy: Part I. Characterization of laterite acid leach residues
Two different laterite samples, designated as Ore No. 1 and Ore. No. 2, respectively, were leached with sulfuric acid in the temperature range of 25°C to 275°C, in order to evaluate the effects ofExpand