The Direct Leaching of Nickel Sulfide Flotation …
hydrometallurgical processing of nickel sulfide concentrates and whole ores may be a remedy to these issues and hydrometallurgy offers several advantages …
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hydrometallurgical processing of nickel sulfide concentrates and whole ores may be a remedy to these issues and hydrometallurgy offers several advantages …
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Most of the world's nickel is extracted from the mineral pentlandite, (Ni, Fe)9S8, which frequently oc-curs in ores containing predominantly pyrrhotite and various non-sulRdes, some of which contain magne-sium (Table 1). The nickel content in such sul Rde ores is generally low (0.2}3%) and varies from place to place in the same deposit.
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The conventional smelting and refining of Ni sulfide concentrates is an effective strategy for extracting Ni from sulfide ores. However, during the smelting …
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Sulfide nickel ores serve as an essential raw material for the nickel industry. Representing approximately 40 pct of the global nickel ore reserves, the sulfide nickel ores constitute approximately 30 pct of all the nickel production worldwide.[] Pyrrhotite (Pyrr), pentlandite (Pn), chalcopyrite, pyrite (Py), and gangue are the major …
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Nickel is commonly present in two principal ore types – sulfide and laterite ores. Historically, most nickel production has been derived from sulfide ores. While about 70% of the world land-based nickel resources are contained in laterites, they currently account for only about 40% of world nickel production.
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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 …
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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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Nickel (Ni) is a transition element that exhibits a mixture of ferrous and nonferrous metal properties. It is both siderophile (i.e., associates with iron) and chalcophile (i.e., associates with sulfur). The bulk of the nickel mined comes from two types of ore deposits: magmatic sulfide deposits where the principal ore mineral is pentlandite ...
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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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Some amounts of magnetite and chromite exist in the ore together with sulphide and oxide type nickel minerals. The ore sample contains 1.32% Ni, 10.79% SiO2, 78.39% Fe2O3, 1.3 g/t Ag, and 1.0 g/t ...
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DESCRIPTION. Nickel Sulfide Ores and Impact Melts presents a current state of understanding of the. geology and ore deposits of the Sudbury Igneous Complex in Ontario, Canada. The first. …
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Wang et al. [23, 24] proposed a one-step extraction process of nickel from nickel sulfide concentrates by iron addition. The mixture of concentrate and iron after roasted at 800 °C for 240 min ...
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A new extraction technology of chlorination roasting with a mixture of MgCl 2 ·6H 2 O and NaCl was investigated to co-extract nickel and copper from low-grade nickel ores. The effects of some key factors on the extraction of nickel, copper, and iron were studied, and the results show that,when the roasting temperature is 850°C, the roasting …
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Bacterial leaching of nickel sulfide ores and concentrates has been extensively researched and is the subject of an excellent review by Watling (Citation 2008). ... destined for stainless steel to nickel sulfate production as this will cannibalize existing demand. Hydrometallurgy will play an important role in meeting class 1 nickel demand, …
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In this work, the selective reduction of lateritic nickel ore was carried out using sodium sulfate, sodium carbonate, and sodium chloride as additives. The 5 wt% of anthracite coal, which contains 60.35% of fixed carbon and 1.9% of sulfur, was used as a reductant. All raw materials were mixed homogenously prior to the pelletization process …
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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 was roasted with the addition of ammonium sulfate under a static air atmosphere, and the roasted products were leached by water, in order to evaluate the …
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Cobalt and Nickel Production. B. Mishra, in Encyclopedia of Materials: Science and Technology, 2001 2.4 Hydrometallurgy of Laterite Ores. Two hydrometallurgical processes for the recovery of nickel from oxide ores have been commercialized: the reduction roast–ammonium carbonate leach process and the sulfuric acid pressure leach process …
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The mineralogical phase identification of the ore samples was carried out using XRD (Rint-2000, Rigaku), and the results in Fig. 1 indicate that the major crystalline minerals in mixed oxide-sulfide nickel ore are pyrite (FeS 2), pyrrhotite (Fe 7 S 8), pentlandite ((Fe,Ni) 9 S 8), chalcopyrite (CuFeS 2) and quartz (SiO 2).It can be …
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Nickel is an important alloy element, about 65 pct of nickel in the world and 85 pct in China are used to smelt stainless steel. [1,2] China has become the largest nickel consumer in the world due to the continuous increase of nickel demand in recent decades.[2,3] Nickel sulfide ore is one of the main resources for nickel production, …
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Abstract. With the vigorously growing demand of the steel industry, corrosion resistance alloys, clean energy industries, and a variety of engineered infrastructure or technology, high-grade nickel ores are being exhausted gradually in the world. This review outlines metallurgical processes for nickel production from various nickel sulfide ores ...
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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 ...
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The direct hydrometallurgical processing of nickel sulfide concentrates and whole ores may be a remedy to these issues and hydrometallurgy offers several advantages over pyrometallurgy such as potentially lower capital costs, the ability to …
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1. Introduction. Lateritic nickel‑cobalt ores, which form as a result of intensive weathering of ultrabasic rocks in tropical or sub-tropical regions, are important deposits in terms of their nickel and cobalt content, as they account for >60% of the world's nickel resources (Ma et al., 2017; U.S. Geological Survey, 2018).Unlike sulfide deposits that …
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The method used to extract copper from its ores depends on the nature of the ore. Sulfide ores such as chalcopyrite ( CuFeS2 C u F e S 2) are converted to copper by a different method from silicate, carbonate or sulfate ores. Chalcopyrite (also known as copper pyrites) and similar sulfide ores are the commonest ores of copper.
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Hydrometallurgical routes for treating nickel sulfide ore have been developed for many years, which are mainly focused on atmospheric acid leaching [18][19][20][21][22], high-pressure acid ...
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Sulfide nickel ores serve as an essential raw material for the nickel industry. Representing approximately 40 pct of the global nickel ore reserves, the …
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The conventional nickelNickelsmeltingSmelting and refining is the dominant strategy for nickel production from the sulfide nickel ores. The main disadvantages are the significant amount of ...
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Nickel sulfide is any inorganic compound with the formula NiS x.These compounds range in color from bronze (Ni 3 S 2) to black (NiS 2).The nickel sulfide with simplest stoichiometry is NiS, also known as the mineral millerite.From the economic perspective, Ni 9 S 8, the mineral pentlandite, is the chief source of mined nickel.Other minerals include …
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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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The conventional smelting and refining of Ni sulfide concentrates is an effective strategy for extracting Ni from sulfide ores. However, during the smelting …
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Cobalt and Nickel Production. B. Mishra, in Encyclopedia of Materials: Science and Technology, 2001. 3 Summary. Primary nickel and cobalt are extracted from two different types of ores: sulfide ores and oxide ores. The extraction methods are typically based on pyrometallurgy, hydrometallurgy, and electrometallurgy principles that yield ...
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Alternative Lixiviants to Cyanide for Leaching Gold Ores. M.G. Aylmore, in Gold Ore Processing (Second Edition), 2016 5.1.1 Platsol™ Process. The Platsol™ process was originally developed in collaboration with the University of British Columbia, Kane Consultants Ltd., and Lakefield Research in Canada for the treatment of flotation sulfide …
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Roughly 70% of current Class 1 nickel production is derived from sulfide ores – with the remainder originating from limonitic laterite deposits. ... HPAL entails laterite ore being fed into an autoclave along with sulfuric acid at temperatures up to 270°C and pressures up to 725 psi to separate the nickel and other byproducts (e.g. cobalt ...
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Despite nickel-bearing sulfide deposits having a large share of the world's nickel extraction, lateritic ore deposits contain more than 70% of the world's nickel reserves. Considering the limitations of producing nickel from sulfide reserves, the use of oxide reserves (laterites) for the production of nickel will be of great importance in the ...
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