— 1. Introduction. 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 …
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— The carbothermic reduction roasting followed by ammoniacal leaching of a Ni-laterite ore from Bajaur (Pakistan) has been studied first time for its potential exploitation via the Caron process. The use of fuel oil as reductant can be costly in Pakistan, therefore, plenty available coal was employed in this study.
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— Nickel extraction from primary resources such as ores/minerals (sulfides, arsenides, silicates, and oxides) including the unconventional one viz., the polymetallic …
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— At present, the metallurgical process of laterite nickel ore mainly includes pyrometallurgy, hydrometallurgy and the combination of pyrometallurgy and hydrometallurgy [9].Pyrometallurgy can be divided into reduction sulfide smelting nickel matte process [10], [11], reduction smelting ferronickel process [12], [13] et al. …
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— Introduction. Nickel is one of the metals with extremely high strategic value in the development of national economy. Nickel has attracted continuous attentions owing to its superior performances such as good ductility, corrosion resistance, high-temperature resistance, and high strength, which have been considered as an essential basic …
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— Reduction roasting–magnetic separation technology has been extensively applied to the extraction of nickel from laterite nickel ores with low nickel content due to its short process flow, low energy consumption, and minimal influence on the environment (Zhang et al., 2020, Zhu et al., 2019).
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ores, laterites, and sulfides, which make this paper a valuable guide by providing an overview of the process used to isolate nickel from its ores and an important source of strategies used to enhance its extraction. Keywords: Nickel extraction, laterite ores, sulfide ores, Ni secondary sources, leaching.
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Nickel: smelting; Extraction and purification; Nickel is recovered through extractive metallurgy: it is extracted from its ores by conventional roasting and reduction processes that yield a metal of greater than 75% purity. In …
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— The conventional nickel smelting and refining is the dominant strategy for nickel production from the sulfide nickel ores. The main disadvantages are the significant amount of SO 2 emissions during smelting and complex refining processes. In this paper, the authors investigated a solid-state nickel extraction method that recovered nickel …
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— 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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Selective reduction · Fractional factorial design 1 Introduction Nickel laterites ore is commonly found and mined in tropical countries like Indonesia, the Philippines, and Cuba. These ore deposits account for 73% of the world's nickel resources and 40% of nickel production. Such ore deposits occur in three layers: limo-
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— The extraction of Ni from sulfide ores is much simpler relative to laterites and is dominated by pyrometallurgical processing. This typically involves comminution and flotation to produce a nickel ...
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It is extracted from its ores trough a conventional roasting method which removes the moisture from the ore. Next the nickel oxide is removed by reduction furnace which also greatly reduces the chemical bound water. Resulting in a 75% pure form of nickel. The extraction of nickel from the sulfidic ore requires a different method.
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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 …
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Nickel extraction from hazardous waste by sulphuric acid leaching has been investigated. This study was performed to assess the effects of different parameters such as reaction time, acid concentrations, solid-liquid ratio, particle size, stirring speed and reaction temperature on nickel extraction from zinc plant residue, with the aim of recycling this …
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— The reduction in the serpentine content from 66 pct (wt pct) to 1 wt pct in NCP ore indicates that nearly all of the nickel associated with this phase was extracted. There was also no unreacted NiO, CoO or MgO as their oxides or associated with unreacted serpentine detected in the solid residue after the sulfation-roasting-leaching …
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— The investigated carbothermic reduction roasting followed by NH 4 OH–(NH 4) 2 CO 3 leaching of a nickeliferous laterite ore from Bajaur reserves has shown good …
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— 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 …
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— In this study, a two-stage pyro-hydrometallurgical process was investigated to extract scandium from a laterite ore. The first stage of the process involves carbothermic reduction in which iron, nickel, and cobalt contents of the ore are reduced with carbon at 1400–1600 °C and separated as a metallic phase.
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Explore the process of nickel extraction from its ores, with a focus on the Caron process. Learn about the role of nickel laterite ores, the steps involved in the Caron process, and …
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— Hydrometallurgical processes involve the use of aqueous solutions and chemical reactions to extract nickel from the ore. The two primary hydrometallurgical methods used for nickel extraction are: 1) High-Pressure Acid Leaching (HPAL): HPAL is a widely used method for extracting nickel from laterite ores, which are low-grade and high …
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— So called "Carbonyl Refining Method for Laterite Ore" was developed by INCO up to the full scale pilot stage and included partial reduction of nickel and iron by CO/CO 2 gas mixture and direct extraction of nickel from ore in the form of nickel carbonyl. The product of the refining was forecasted as ferronickel with Fe/Ni ratio of 1.4/1.
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— 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...
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Ask the Chatbot a Question Ask the Chatbot a Question zinc processing, the extraction of zinc from its ores and the preparation of zinc metal or chemical compounds for use in various products.. Zinc (Zn) is a metallic element of hexagonal close-packed (hcp) crystal structure and a density of 7.13 grams per cubic centimetre. It has only moderate …
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— Nickel can be extracted directly from its ore by reduction by hydrogen or carbon monoxide at elevated temperature at $600 mat{^circ C}$ to $650 mat{^circ C}$: $$ce{NiO + H2 -> Ni + H2O}$$ $$ce{NiO + CO -> Ni + CO2}$$ Also, it can be extracted by treatment with dilute sulfuric acid following by precipitation:
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— The total nickel reserves in the world are estimated to be approximately 89 million tons, of which 60% corresponds to laterites ore deposits and 40% to sulphide ore deposits (Alvial-Hein et al., 2021, Meshram et al., 2019).In recent years, high grade nickel sulfide ore is gradually exhausted due to excessive mining, while low grade laterite …
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— Nickel and cobalt were extracted from low-grade nickeliferous laterite ore using a reduction roasting-ammonia leaching method. The reduction roasting-ammonia leaching experimental tests were chiefly introduced, by which fine coal was used as a reductant. The results show that the optimum process conditions are confirmed as …
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The method used to extract a metal from its ore depends upon the stability of its compound close compound A substance formed by the chemical union of two or more elements. in the ore, which in ...
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— Laterite ores account for >60% of the world's nickel resources. This ore contains considerable amount of scandium, a strategic material in increasingly high demand in various industries.Here, an innovative two-step process was developed in which scandium is first concentrated in a slag phase using carbothermic reduction and then is …
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— The carbothermic reduction roasting followed by ammoniacal leaching of a Ni-laterite ore from Bajaur (Pakistan) has been studied first time for its potential exploitation via the Caron process.
WhatsApp: +86 18221755073