Nickel processing | Extraction & Refining Techniques …
Ores Sulfides. Canadian ores are sulfides containing nickel, copper, and iron. The most important nickel mineral is pentlandite, (Ni, Fe) 9 S 8, followed by pyrrhotite, usually …
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XVIII International Mineral Processing Congress
The Effect of Oxidation on the Flotation Behaviour of Nickel-Copper Ores. Surface oxidation is one of the most important factors that influence the flotation selectivity and recovery in the processing of complex sulphide ores. It is an inherent part of surface chemical reactions that determine whether the surface film formed on a sulphide ...
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Process effluents and mine tailings: sources, effects and
Increasing population levels, growing economies, rapid urbanization and changes in consumption patterns have increased the demand for raw materials such as base and precious metals, leading to growing concerns regarding their availability and the global efficiency of the mine supply chain. Mine tailings, consisting of process effluents …
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Full article: The Direct Leaching of Nickel Sulfide Flotation
Several nickel processing operations have practiced hydrometallurgical processing of nickel sulfide flotation ... (80–110°C), pressure oxidation process utilizing oxygen gas as the ... The recovery nickel and gold from sulphide concentrates. In XVIII International Mineral Processing Congress, ed. J. T. Woodcock, 1227–31. Sydney, …
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Oxygen Reduction on Sulphide Minerals | SpringerLink
This process is experimental and the keywords may be updated as the learning algorithm improves. ... Oxygen reduction on sulphide minerals. Part III. Comparison of activities of various coppe, iron, lead, and nickel mineral electrodes, to be published ... London, 1970, p. 59. Google Scholar T. Biegler, Oxygen reduction on sulphide minerals ...
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Effect of Arsenic, Antimony, and Bismuth in Co-processing …
In: Maholtra D (ed) Recent advances in mineral processing plant design. SME, New York, pp 140–154. Google Scholar McDonald R, Rodriguez M, Li J, Robinson D, Jackson M, Hosken T (2012) The co-processing of nickel sulphide and laterite materials using low oxygen pressures.
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The use of oxygen in high pressure acid leaching of nickel …
Preliminary leaching tests on a sample of limonitic laterite at 220 °C, gave satisfactory recoveries of nickel.It was noted that a significant proportion of the iron remained in solution (about 11 g/l) due to its presence as divalent iron.This was equivalent to about 55 kg per ton of ore or 14% of the iron.The use of oxygen in the leach was …
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Oxygen reduction at sulphide minerals. 3. The effect of …
The formation of hydrogen peroxide (H 2 O 2), an oxidising agent stronger than oxygen, during the grinding of galena (PbS) was examined.It was observed that galena generated H 2 O 2 in the pulp liquid during wet grinding and also when the freshly ground solids were placed in water immediately after dry grinding. The generation of H 2 …
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Multiphase equilibrium modeling of oxygen bottom …
A computational thermodynamics model for the oxygen bottom-blown copper smelting process (Shuikoushan, SKS process) was established, based on the SKS smelting characteristics and theory of Gibbs free energy minimization. The calculated results of the model show that, under the given stable production condition, the contents …
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Reducing Carbon Footprint on Nickel Reduction Kiln
Mining and mineral processing operations alone are responsible for 4 ... A multivariable (MIMO) BrainWave ® MPC controller is used to control the temperature and oxygen level at the feed and fired end of the kiln ... realizing the potential of carbon capture and utilization in the processing of ultramafic nickel ores. Chem Eng J 433:134203. ...
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(PDF) Nickel Laterite Smelting Processes and Some
In Proceedings of the 2nd Mineral Processing and T echnology International Conference, Serpong, Indonesia, 1–2 November 2018; IOP Publishing: Bristol, UK, 2019.
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(PDF) Mineral processing : foundations of theory and …
Physicochemical Problems of Mineral Processing, nr 39 (2005) 2005 • J. Drzymala. Download Free PDF View PDF. Physicochemical Problems of Mineral Processing. Vol. 48, 2012, Issue 2. 2012 • J. Drzymala. Download Free PDF View PDF. Minerals. Classification of Flotation Frothers. J. Drzymala.
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Thermo-ecological and exergy replacement costs of nickel processing
The combined methodology enhances the importance of mineral consumption. In this paper, an exergy analysis of nickel processing is performed through the application of two methodologies: TEC (thermo-ecological cost) and ERC (exergy replacement cost). The merging of both methodologies allows to have a complete …
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Materials Proceedings | Free Full-Text | The Nickel …
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 …
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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 …
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Chemistry of Nickel
The oxide is obtained from nickel ores by a series of treatments including concentration, roasting and smelting of the minerals. In the first step of the process, nickel oxide is reacted with water gas, a mixture of H 2 and CO, at atmospheric pressure and a temperature of 50 °C. The oxide is thus reduced to impure nickel.
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Efficient Synchronous Extraction of Nickel, Copper, …
International Journal of Mineral Processing 124, 145–149 (2013). Article CAS Google Scholar Xu, C. et al. Extraction of metals from complex sulfide nickel …
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Assessing the energy and greenhouse gas footprints of nickel …
Greenhouse gas emissions. The energy and greenhouse gas footprints of the various nickel laterite processing routes in Table 1 and Fig. 2, Fig. 3 range from 167 to 565 GJ/t Ni and 22.4 to 44.8 t CO 2 e/t Ni (without acid plant) and 14.6 to 44.8 t CO 2 e/t Ni (with acid plant) respectively. These results compare with values of 114 GJ/t Ni and 11 ...
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Extraction Behavior of Nickel and Cobalt From Serpentine …
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 …
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Special Issue : Water within Minerals Processing, Volume II
The oxygen demand increased from recycled process water to the copper flotation feed, then dropped for the nickel flotation feed. The nickel flotation feed Redox potential (ORP) was lowest for July, while EDTA extractable metals increased from May to July. There was a 20% drop in nickel recoveries from May to July.
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EXTRACTING METALS FROM SULFIDE ORES
Many important metals are present in nature combined with sulfur as metal sulfides; these include cadmium, cobalt, copper, lead, molybdenum, nickel, silver, and zinc. In addition, gold and platinum group metals are associated with sulfidic base metal ores. The extraction of metals from their ores has been an essential factor in the creation and ...
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Diffusion of oxygen in liquid copper and nickel: …
The solidified diffusion columns were sectioned and analysed for oxygen by vacuum fusion analysis. Oxygen diffusivities, D, were calculated through use of a …
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Recent Advancements in Metallurgical …
The currently proposed mineral processing operations are based on metallurgical approaches applied for land resources. ... hydrogen, and small amounts of carbon dioxide, oxygen, and nitrogen. The most …
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Autoclave Leaching of Copper Nickel Matte
To aid in the separation of nickel and copper, the leaching step is usually conducted in several stages. Presently, considerable attention has been given to a two-stage leaching process that has been …
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High-Grade Ferronickel Concentrates Prepared from …
Nickel is widely used in industrial processes and plays a crucial role in many applications. However, most of the nickel resource mainly exists as nickel oxide in …
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Nickel Laterite Smelting Processes and Some Examples …
Keywords: laterite; smelting; RKEF process; low-grade ferro-nickel 1. Introduction According to a review published by Diaz et al., oxide-type nickel ores accounted for 64% of land-based nickel ores, but more than 60% of nickel production was based on the matte smelting of sulfide ores in 1988 [1].
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(PDF) Advanced Review on Extraction of Nickel …
on Extraction of Nickel from Primary and Secondary Sources, Mineral Processing and Extractive Metallurgy Review, 40:3, 157-193, DOI: 10.1080/08827508.2018.1514300 To link to this article: …
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The High Temperature Co-Processing of Nickel …
The processing of nickel laterites by high pressure acid leaching (HPAL) typically uses feeds with an average nickel content not less than 1.1%–1.2% (cut-off grade 1.0%) [] though recently several …
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High-Grade Ferronickel Concentrates Prepared from Laterite Nickel …
Nickel is widely used in industrial processes and plays a crucial role in many applications. However, most of the nickel resource mainly exists as nickel oxide in laterite nickel ore with complex composition, resulting in difficulty in upgrading the nickel content using physical separation methods. In this study, high-grade ferronickel concentrates …
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Nickel processing
on Extraction of Nickel from Primary and Secondary Sources, Mineral Processing and Extractive Metallurgy Review, 40:3, 157-193, DOI: …
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