High-pressure acid leach (HPAL) residue from laterite nickel ore is a potentially valuable resource for ironmaking; however, its efficient utilization is hindered by its high sulfur content. In this study, an effective and straightforward method is proposed for sulfur removal from HPAL residue. The process involves sieving and sodium carbonate …
Introduction. Chemistry of Nickel and Cobalt Separation. Commercially Used SX Reagents for Nickel and Cobalt Extraction. Acidic Extractants. Basic Extractants. …
The state of the art of nickel and cobalt solvent extraction in the nickel laterite industry is assessed, covering the reagents in commercial use (organophosphorus reagents, …
Hydrometallurgy, 3 (1978), pp. 181-196. View PDF View article View in Scopus Google Scholar. Beukes et al., 2000. ... Characterization of scales obtained during continuous nickel laterite pilot-plant leaching. Metallurgical and Materials Transactions B, 31B (2000), pp. 1175-1186. CrossRef View in Scopus Google Scholar.
1.. IntroductionAbout 60% of the current worldwide production of nickel is derived from sulphide ores and the rest comes from nickel laterites (Sudol, 2005).However, about 70% of the nickel reserves are present in laterite deposits (Dalvi et al., 2004).As a result, there is growing interest in improving the technology for extraction of nickel (and …
@article{Maccarthy2016AtmosphericAL, title={Atmospheric acid leaching mechanisms and kinetics and rheological studies of a low grade saprolitic nickel laterite ore}, author={J. J. Maccarthy and Ataollah Nosrati and William Skinner and J. Addai-Mensah}, journal={Hydrometallurgy}, year={2016}, volume={160}, pages={26-37}, …
Primary world nickel production in 2020 was 2430.7 kt Ni; 69% (1677.7 kt) of them came from oxidized nickel ores (laterites) and 31% from sulfides. Production-wise, 87.7% of the 1677.7 kt came from pyrometallurgical and 12.3% from hydrometallurgical processes. For a long time, Fe-Ni had a 20–40% Ni analysis, but in 2006 a new Fe-Ni quality came into …
Caron process, a combination of pyrometallurgy and hydrometallurgy, is also well described in the review. ... The nickel laterite processing routes were (1) high pressure acid leaching (HPAL), (2 ...
Nickel laterite processing through pyrometallurgy and hydrometallurgy have been commercially applied to extract nickel metal. The pyrometallurgical routes method was suitable for saprolitic nickel ore processing. The examples of pyrometallurgy processing which have been commercially
Laterite nickel ore is a vital ingredient for lithium-ion batteries. Indonesia currently has 23.7% of the world's nickel ore reserve, ... "We know that producing batteries for electric vehicles requires hydrometallurgy, which creates quite a lot of tailings," he said. "Therefore, they [the developers] plan to dispose of the tailings in ...
The recovery of nickel from laterite ore with sulphuric acid under the effect of microwave irradiation was studied. The experimental results indicated that the extraction rate of nickel was influenced by reaction time, sulphuric acid concentration, and temperature, especially by microwave power. ... Hydrometallurgy, 2008, 91(1–4): 35.
Laterite hydrometallurgy produces about 100,000 tonnes per year of high-purity nickel and 10,000 tonnes per year of high-purity cobalt, mostly by leaching at high temperature using sulfuric acid.
Nickel laterite leaching Outotec can perform laterite leaching in HPAL and atmospheric conditions. Depending on your mineralogical requirements, nickel laterite …
The DTA–TG curve of the raw ore is shown in Fig. 2.The effect of roasting on mineral transformation of laterite ores under atmospheric pressure at different temperatures is shown in Fig. 3.DTA–TG analysis shows two endothermic peaks at about 277 °C and 607 °C due to the release of adsorbed water, dehydroxylation of goethite and lizardite, …
No drying and reduction steps are needed, since raw laterite (`as mined') is used. 3. High selectivity is obtained due to hydrolytic iron re-precipitation as hematite. 4. No sulphur dioxide emissions are produced. 5. Recoveries of more than 95% for nickel and more than 90% for cobalt can be achieved. The process is a `one-pass' with respect to ...
1. Introduction. Laterite ores account for 70% of the world's land-based nickel reserves (Shofi et al., 2020).Currently, the increase in demand for nickel and the depletion of sulfide ore reserves have diverted attention toward laterite ore reserves (Zhang et al., 2016).At present, approximately 70% of these ores are produced by …
Sukinda mines of Odisha, India are known as the major nickel laterite deposits. Laterite ores contain several kinds of metal elements including nickel, cobalt, iron, silicon, aluminium and chromium. 40% of world's annual nickel production is from low-grade laterite ores [1, 2]. Sulphides are the high-grade nickel ores and typically range …
the majority of producers consider laterite deposits as a potential source of nickel and cobalt. However, processing laterites by traditional pyrometallurgical methods is …
Hydrometallurgical processing of nickel laterite ore is complicated by impurities such as chromium, iron, aluminium, manganese and cobalt. Cobalt, in particular, is a value metal which is always present in the unweathered precursor igneous rock (Freyssinet et al., 2005). Once leached, chromium, iron and aluminium can be …
The availability of laterite ores, which are oxide type ores, is 86% of the nickel reserves on the Earth, and the processes used in the production of nickel from sulphide type ores have negative ...
The emergence of the battery society has resulted in an unprecedented strain on the supply of battery metals, such as nickel, cobalt, and manganese. Consequently, there is an urgent need to develop processing technology for low-grade nickel laterite ores, which are abundant in resources but challenging to process using conventional …
Identified land-based resources averaging 1 wt% Ni or more contain at least 130 Mt of Ni metal. About 60% of Ni ores are hosted by laterite deposits and 40% by …
For example, the process was successfully applied for the recovery of nickel from low-grade laterite ores (<1.5 % Ni) at Moa Bay operation in Cuba and for the purification of nickel at Freeport Nickel Company refinery in Louisiana. ... Flett, D. S. (2004). Cobalt-nickel separation in hydrometallurgy: A review. Chemistry for Sustainable ...
This processing based on dissolution in water is called hydrometallurgy. Saprolite ores are treated by smelting, where the ore is dried and melted using energy …
Leaching of nickel laterite ore at atmospheric pressure is a leaching method that can be operated at >100⁰C temperatures in an atmospheric pressure, which is applicable to a low-grade laterite ore.
The present article reviews the insight into the available hydrometallurgical approaches for treating laterite ores and the separation of nickel and cobalt from hydrometallurgy routes. Caron process, a combination of pyrometallurgy and hydrometallurgy, is also well described in the review.
Nickel is a kind of silvery white ferromagnetic metal firstly separated by Swedish mineralogist A.F. Cronstedt in 1751. It is in the eighth group of the fourth period in the periodic table of elements, with atomic number of 28, atomic weight of 58.71, density of 8.9 g/cm 3 (20 ℃), melting point of 1455 ℃, and boiling point of 2915 ℃. The most …
For a pre-reduced nickel laterite containing 35–50% iron (as FeO), 1% nickel, 30% silica, about 5% calcium plus magnesium (as CaO + MgO) and 7% alumina, the acid requirement for leaching is typically 75–110 kg/t. However, a significant amount of the proportion of the leached iron exists in the ferrous state.
PDF | On Mar 11, 2019, Sait Kursunoglu and others published Hydrometallurgical Processing of Nickel Laterites—A Brief Overview On The Use of Solvent Extraction and Nickel/Cobalt Project For The ...
Nickel laterite ores account for over 60% of global nickel supply. They are the product of intensive deep weathering of serpentinites under humid tropical conditions. Nickel is concentrated to over 1.0 wt% and is hosted in a variety of secondary oxides, hydrous Mg silicates and smectites. The formation, mineralogy and grade of the …