Roasting and Leaching Behavior of Nickel Laterite Ore
Abstract Nickel is mostly extracted from sulfide ores, however, laterite ores account for over 60 pct of all nickel resources in the world, and despite its predominance, there is no well-established process to extract nickel from such ores. Nickel in laterites is hosted in many different compounds such as oxides, hydroxides, and silicates minerals. The sulfation-roasting …
Ore Oxidation in the Air Atmosphere
Pentlandite is the most common and abundant mineral used for nickel extraction, accounting for over 60% of worldwide nickel production, mostly from sulfide copper–nickel ore deposits [13–15]. Pentlandite is usually associated with iron sulfides–pyrite (FeS2) and pyrhotite (Fe7S8) and copper-iron sulfide chalcopyrite (CuFeS2).
Advanced study on the extraction of Nickel from its ores
Nickel's extractive metallurgy is the most complex since there are two major types of ores, laterites, and sulfides, which make this paper a valuable guide by providing an overview of the …
(PDF) Sulfation Roasting of Nickel Oxide–Sulfide Mixed Ore …
Sulfation roasting, a common activation technique, is a potential method for cleaner production of nickel from complex low-grade ores. In this study, nickel oxide–sulfide mixed ore concentrate ...
(PDF) Advanced Review on Extraction of Nickel …
Nickel extraction from primary resources such as ores/minerals (sulfides, arsenides, silicates, and oxides) including the unconventional one viz., the polymetallic sea nodules, and various...
A Review of Nickel Pyrometallurgical Operation
The main methods have been extensively reviewed for nickel extraction from nickel sulfide ores which maybe are potentially applicable to provide new ideas for smelting technology innovation of ...
Pentlandite
Primary nickel is produced from two very different ores: sulfide ores and laterite (oxide) ores. Sulfide ores, which are generally mined from underground and often found in conjunction with …
Thermal Decomposition and Kinetics of …
In the pyrometallurgical production of nickel from its sulfide ores and concentrates, one of the most important processing steps is controlling the iron sulfide oxidation process. Reactions which occur during the nickel sulfides …
Comprehensive Review on Metallurgical Upgradation Processes of Nickel
The land-based resources available for the preparation of nickel mainly include nickel sulfide ore and nickel oxide ore, and the sulfide-oxide ratio in current nickel reserves is believed to be about 4:6. Sulfide ores originated from hydrothermal processes related to volcanic areas.
Upgrading nickel in laterite ores by flotation | Request PDF
Nickel is sourced from sulphide and laterite ores. While 70% of the nickel resources are contained in laterites, these ores are often complex and expensive to treat using conventional methods.
Nickel processing
In Russia, the main sources of nickel are copper-nickel ores (70% of total production), and the rest is from oxidized (silicate) nickel ores. Sulfide copper-nickel ores are mined in the Krasnoyarsk Territory and the Kola Peninsula.
Efficient Synchronous Extraction of Nickel, Copper, and …
Synchronous extraction of nickel and copper from a mixed oxide–sulfide nickel ore in a low–temperature roasting system. Journal of cleaner production 177, 371–377 (2018). Article CAS Google ...
(PDF) Thermal Decomposition and Kinetics of Pentlandite-Bearing Ore
The knowledge of its reaction mechanism, products distribution during oxidation and reaction kinetics is important for optimizing the production process. Raw pentlandite-bearing ore from the ...
Characterization of a Nickel Sulfide Concentrate …
In anticipation of future demands, a comprehensive understanding of the chemical and mineralogical characteristics of nickel-bearing minerals is a prerequisite to devising effective nickel beneficiation methods. Of particular …
Synchronous extraction of nickel and copper from a mixed oxide …
The technique of low-temperature roasting with ammonium sulfate has been regarded as a promising and cleaner process for direct extraction of valuable metals from low-grade laterite ores (Li et al., 2017), exhibiting many excellent characteristics including high metal recovery, high reaction selectivity, low energy consumption and low cost.The mixture of ores …
A Review of Direct Reduction–Magnetic Separation Process …
The major Ni-producing countries from nickel laterite deposits include New Caledonia, Cuba, the Philippines, Indonesia, Colombia, and Australia. In comparison, most nickel sulfide ores are mined in underground mines in most continents and have a nickel content of around 0.1–7.7 wt.% and account for about 40% of the nickel ore deposits [15,16,17].
Comprehensive Review on Metallurgical Upgradation …
This review outlines metallurgical processes for nickel production from various nickel sulfide ores resources, particularly focusing on recent developments in metallurgical processes to identify …
Solid State Extraction of Nickel from Nickel Sulfide Concentrates
Nickel is an important strategic metal produced at over 2 million tonnes annually [1].Approximately 60% of all Ni is consumed in the production of stainless steel [2, 3].Currently, Ni is primarily extracted from two types of ores: laterites and sulfides [[4], [5], [6], [7]].Although sulfide ores account for a smaller fraction of global Ni reserves, approximately 60% of global Ni …
Review on hydrometallurgical processing technology of …
Overall, nickel sulfide ores provide about three-quarters of the world's nickel production, of which pentlandite ac-counts for almost 90% of nickel sulfide ores [21–23].
Thermodynamics of the Reduction Roasting of …
R. Elliott et al. 322 of a limonitic ore by mixed reducing atmospheres of CO, CO 2, H 2, and/or H 2 O across a range of temperatures, and reported the effect of varying these conditions on the
Full article: The Direct Leaching of Nickel Sulfide …
Violarite is a supergene alteration product of pentlandite and typically occurs in pyrite-violarite and transition zones above the primary zone (massive pentlandite-pyrrhotite ore) (Marston et al. Citation 1981; Nickel, …
A Thermodynamic Analysis of the Selective Sulphidation of Nickel …
The production of a nickel sulphide concentrate through selective sulphidation of a nickeliferous lateritic ore at temperatures lower than current smelting temperatures, is being studied as a ...
Nickel Ores: Types, Extraction, and Uses
In Russia, the main sources of nickel are copper-nickel ores (70% of total production), and the rest is from oxidized (silicate) nickel ores. Sulfide copper-nickel ores are mined in the Krasnoyarsk Territory and the Kola Peninsula. Enterprises mining sulfide copper-nickel ores are united in the RAO Norilsk Nickel concern. Oxidized nickel ores ...
Unlocking Nickel's Potential: Production Methods from …
The production of nickel from pentlandite oxide ore plays a crucial role in meeting global demand for this valuable metal. Traditional smelting, high-pressure acid leaching, pyrometallurgical processes, and novel techniques like PAL-EW offer different approaches to extract nickel …
Extraction Behavior of Nickel and Cobalt From Serpentine-Rich Ore
The demand for nickel has been steadily increasing in the 21st century, primarily driven by the rising demand for electric vehicle batteries. Nickel in laterite is associated within silicate in saprolite ore and hydroxide/oxide in limonite ore. Recently, the sulfation–roasting–leaching process has been developed to address the challenges of …
Bioleaching of Lateritic Nickel Ores | SpringerLink
Pressure acid leaching has been applied to the Caron process to reduce high-energy consuming phases in direct ore leaching. Direct leaching eliminates the need for drying and reduction steps, which then leads to energy savings (Buyukakinci, 2008).The acceptable nickel content in this method is 1–5% (Dalvi et al., 2004).Also, the crushed ore is dissolved directly with sulfuric acid …
Full article: The Direct Leaching of Nickel Sulfide Flotation
2. Laboratory investigations into direct leaching of nickel sulfide concentrates. Laboratory investigations into direct hydrometallurgical processing of nickel sulfide flotation concentrates have been carried out in response to the technical and environmental hurdles presented by the traditional concentrate smelting-matte refining route and a number of these …
Mechanism for the Bio-Oxidation and Decomposition of Pentlandite …
This study provides a novel method for the extraction of nickel from pentlandite by bioleaching at elevated pH values. pH-stat batch stirred tank reacting system. Changes in pH (a) and Eh (b) in ...
The selective chlorination of nickel and copper from low-grade nickel
The chemical analysis of the ore indicates that nickel in raw ore exists as four shares, nickel sulfate (2.2 wt%), nickel oxide (32.8 wt%), nickel sulfide (38.2 wt%) and nickel silicates (26.8 wt%) which is the refractory part, while copper in raw ore exists as free oxidized copper (13.2 wt%), combined copper oxide (3.2 wt%), secondary copper ...
A Thermodynamic Analysis of the Selective Sulphidation …
The production methods and the types of nickel ores, which have been treated, have also changed over the ... Nickel sulphide ores contain pentlandite, a mineral containing approximately 34 mass percent nickel. ... erous ores is the selective conversion of the nickel oxide values within the ore to a nickel sulphide, while retaining