Earlier studies indicated that nickel extraction from lateritic ores was strongly dependent on types of nickel bearing mineral present, leaching temperature and sulfuric acid concentration (Canterford, 1978, Panagiotopoulos and Kontopoulos, 1988).Studies on leaching kinetics of laterites (Rubisov et al., 2000) showed that during leaching, magnesium dissolution …
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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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Abundant low-grade nickel sulfide ore reserves hold potential as nickel resources but are hindered by high magnesium silicate content, limiting efficient utilization. The authors investigated the possibility of extracting nickel from a low-grade ultramafic nickel sulfide concentrate into ferronickel alloy. The nickel extraction study involved thermal upgrading and …
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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 stable oxidation state of …
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Nickel extraction technology from nickel sulfide ore based on "sulfated roasting–water leaching" can achieve high efficiency and clean extraction of nickel, but how …
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Students can perform reduction experiments themselves such as reducing iron oxide to iron. A favourite class practical lesson is extraction of iron on a match head. Begin by showing a sample of the iron ore haematite. Discuss sources of iron ore and mines such as the former Florence iron mine in Egremont, Cumbria which closed in 2008.
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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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Recovery of nickel from a PNG nickel laterite with high content of iron by a sulphation roasting-water leaching has been studied. The influences of sulfuric acid/ore ratio, temperature of roasting and water on recovery efficiency were investigated.
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Semantic Scholar extracted view of "Extraction of ferronickel concentrate from laterite nickel ore by reduction roasting-magnetic separation using spent cathode carbon" by S. Hui et al. ... Efficient nickel extraction from nickel matte by combined atmospheric-oxygen pressure acid leaching: Thermodynamic analysis and sulfur conversion mechanism ...
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An official publication of the Society for Mining, Metallurgy & Exploration Inc. Key words: Leaching, Kinetics, Nickel extraction, Saprolitic ore, Citric acid, Shrinking core model Introduction for the extraction of metals, especially nickel, promise to be meaningful alternatives to pyrometallurgical processes to primarily treat low-grade ...
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The current study focuses on extracting nickel and cobalt from a mine overburden with 0.41% nickel with major silicate gangue. ... with high iron, low nickel ore on top and low iron, high nickel ...
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Nickel extraction from Morowali laterite ore has been carried out with nitric acid as the solvent. This study aim s to determine the effect of nitric acid concentration, temperature, and stirring ...
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In this study, segregation roasting and magnetic separation are used to extract nickel from a garnierite laterite ore. The garnierite laterite ore containing 0.72% Ni, 0.029% Co, 8.65% Fe, 29.66% MgO, and 37.86% SiO2 was collected in the Mojiang area of China. Garnierite was the Ni-bearing mineral; the other main minerals were potash feldspar, forsterite, tremolite, …
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5. 2.EXTRACTION OF NICKEL • The extraction of nickel and ferronickel from laterite and sulfide ores • Laterite ores occur as saprolite, smectite and limonite layers because of their different compositions and …
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The sulfation roasting leaching method has been developed for the recovery of nickel from laterite ore because it offers greater flexibility, and requires less energy compared to acid leaching and smelting processes. However, the previous studies found that the mineral carriers from saprolite ore affected the recovery of nickel and cobalt. To address this issue, …
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With nickel found in two radically different types of ore, it is not surprising that the mining methods differ. Sulfide deposits are usually mined by underground techniques in a manner similar to copper, although some deposits have been …
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If this ore is treated with the existing nickel sulfide ore smelting process, a large number of valuable metals are lost in the flotation process,4 coupled with high energy consumption caused by high-temperature operation, resulting in high costs and poor economic benefit of the entire smelting process.5 Taking JNMC's concentrate with an ...
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An assumption was made on the segregation mechanism of nickel from garnierite ore in the previous paper. In this work, the assumption was confirmed by experimental data by using same process for extraction of nickel by XMA, electron beam scanning microscope and chemical analysis of the concentrates obtained. Fine ferronickel powder having very high nickel content …
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Over the past 30 years laterite ores have become increasingly more important as a source of nickel metal (Dalvi et al., 2004).Several methods of nickel extraction from laterite ores have been piloted and some were put into full operation, including acid leach with sulphuric, nitric and hydrochloric acids, ammonia leach and the pyrometallurgical process (Superiadi, 2007).
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The leaching behavior of metals from a nickeliferous limonitic laterite ore was investigated by high pressure acid leaching process for the extraction of nickel and cobalt.
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A characteristic feature of serpentine oxidized nickel ores (ONO) of the Serov deposit (≈ 1 wt.% Ni) is the increased content of iron and magnesium. The main nickel-containing phases are lizardite, antigorite, clinochlore and iron oxides with the nickel content varying from 1.6 to 9.2 wt.%. Heap (percolation) leaching with aqueous H2SO4 solutions was used for …
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Primary nickel is produced from both lateritic and sulfidic ores. Lateritic ores are formed by prolonged weathering of ultramafic rocks. The laterite deposits exhibit graded layers of ore, with ...
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The demand for nickel and cobalt continues to rise due to their essential roles in a wide range of industrial applications. Although laterites account for 70% of global nickel reserves, the extraction of nickel from laterite ores is complex and requires different methods for each layer of the ore body due to differences in mineralogy.
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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 of the …
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Nickel is an essential element for modern society with numerous applications including its significant place in lithium-ion batteries. Sulfide nickel ore plays a significant role in global nickel production, representing around 30% of the total output [].With the depletion of high-grade sulfide nickel ore, it is of significant interest to investigate the possibility of utilizing low …
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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 ...
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Abstract In this study, magnesia–nickel silicate ore was investigated, which contained 0.83% Ni and antigorite, chlorite, magnetite (Fe3O4), quartz, and mica as the main minerals. Chloride roasting and magnetic separation were used to treat the ore. The addition of red mud enhanced the transformation of nickel silicate to a strongly magnetic mineral mainly …
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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 time is 1.5 h, the mass …
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The quality of nickel ore has decreased significantly from 1850 to 2020 and will continue to do so in the future according to the simulated predictions from the WORLD7 model. For nickel, extraction rates are …
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In general, the Niâˆ'Mo ore enriches in nickel, molybdenum and vanadium and is used for extracting nickel and molybdenum raw materials with a gross reserve of 9.37 million tons [1,3]. For the Niâˆ'Mo ore, the classical process for nickel and molybdenum recovery is roasting, melting and concentration to produce a high impurity nickel∠...
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