At the same time, the main volume of nickel (more than 60%) is produced from less available nickel sulfide ores having limited geological reserves. The reason for such imbalance is technological features, since the energy-consuming stage of obtaining ferronickel is mainly used for oxidized ores, while the mined ore has to be transported to ...
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DFT calculations also demonstrated the presence of two adsorption. Graphical abstract. Download: Download high-res image (117KB) ... The nickel sulphide ores used in the actual mine flotation tests are all samples of ore stored in the ore bin for a period of time and can be regarded as surface oxidized nickel sulphide ores.
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In the nickel sulphide ores, nickel occurs as the discrete mineral pentlandite ((Fe, Ni) 9 S 8 ... in the thermodynamic calculations were not indicated and it appears that ideal beha-
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Therefore, we are reporting a new selective chlorination roasting and water leaching process to treat complex nickel sulfide ore. Anhydrous aluminum chloride was firstly used as the solid chlorination agent to sulfide ore. The chlorination mechanism for metals in nickel-copper sulfide ore were determined by thermodynamic calculation and experiment.
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One method has been developed so as to utilise element ratios in a manner which are compatible with the genetic geological exploration model for komatiite-associated massive …
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303 See Other. openresty
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1. Introduction. The nickel–copper converter matte is an intermediate from smelting of sulfide or laterite ores for the recovery of nickel and generally consists of dzharleit (Cu 1.96 S), heazlewoodite (Ni 3 S 2), and some magnetic alloys. 1,2 Hydrometallurgical processes for the Ni–Cu matte led to products with high purity, less SO 2 emissions during refining, and shorter …
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The Occurrence and Origin of Pentlandite-Chalcopyrite-Pyrrhotite Loop Textures in Magmatic Ni-Cu Sulfide Ores – Barnes et al. 2020. Blade-shaped dikes and nickel sulfide deposits: A model for the emplacement of ore-bearing small intrusions – (OPEN ACESS) Barnes and Mungall 2018
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There are widespread nickel resources around the world, but divided principally between nickel sulfide or laterite (oxide) resources. Historically production has been dominated by sulfide ores but ...
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Nickel sulphide ores containing pentlandite, pyrrhotite and talc have traditionally been treated by bulk sulphide flotation, an approach which seeks to maximise nickel recovery and talc rejection ...
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Chalcocite (Cu 2 S) is the main source for metallurgical production of copper worldwide but it usually co-exist with nickel sulfide in nature. To develop an efficient and green process for the separation and extraction of valuable metals from high-grade matte, we performed density functional theory (DFT) calculations and experimental studies to elucidate chlorination …
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While nickel extraction has historically been dominated by the pyrometallurgical treatment of sulphide ores, the relatively high abundance of nickel laterites is now beginning to translate into increased production from this oxidic ore type, which account for approximately 70% of estimated resources, but only 40% of current production (Dalvi et ...
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The flotation by surface sulphidisation of the oxidized copper-cobalt-bearing ore from Kimpe (1.97% Cu; 0.66% Co) was studied in order to evaluate its behavior by the analysis of its most ...
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Teck's CESL Nickel Process offers a hydrometallurgical solution for unlocking the nickel from disseminated nickel ore deposits. It is capable of treating lower grade nickel concentrates; …
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It is recognized as a metal-excess nickel sulfide mineral (Fleet, 1987). ... is still difficult to determine the uncertainty of the calculated 10 3 ln β 60 – 58 due to lack of measured IR spectra of nickel sulfides. On average, our calculations underestimate the measured Raman frequencies of these Ni sulfides by about 1%. 4. Discussion
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The main nickel deposits being developed include sulfide nickel ores of 1-2% Ni and silicate ores containing up to 1% Ni. The most common nickel minerals include: pentlandite (Fe, Ni)S or (Ni,Fe) 9 S 8 the nickel content of which is 22 …
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copper-nickel sulphide ores of three grades: high-grade ores with a higher content of non-ferrous and precious metals; cuprous ores with a higher copper content as compared to nickel; and disseminated ores with a lower content of all metals. The Trans-Baikal Division mines gold-iron-copper ores of the Bystrinskoye deposit.
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Economic calculations indicate that even with conservative assumptions on the nickel price and additional concentrate tonnages the net present value over ten years is positive. ... Heiskanen, K. Some factors that …
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Nickel is an important metal with the total global consumption of about 2 million tons per year which has grown rapidly since the 1940s (Fig. 1) (Mackey, 2011).Nickel is sourced from two different types of ores, sulphide and laterite.
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Fire Assay is the most common technique for analyzing precious metals was developed and refined almost to perfection before the 15th century (5). Government, mining and smelting companies, private analytical laboratories, universities, and geochemical exploration companies depend on fire assay techniques to produce accurate results.
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Sulfide ores. Sulfide ores can be at (or near) the surface or deep underground, and often have additional value streams beyond cobalt such as copper, platinum, and palladium. Together, these can be worth more than the …
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carbothermic reduction, as in the case of zinc and lead sulfide ores. However, if a However, if a partial roasting process is emp loyed the desirable metallic mineral will still be in the
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Low‒nickel matte as the main intermediate product of nickel sulfide ore in traditional pyrometallurgical smelting, during this process, the valuable metals Ni, Cu, and Co have been enriched 6,7 ...
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Fire assaying is an age-old technique which uses intense heat and dry reagents called fluxes to extract precious metals for its ores. Nowadays, lead fire assay and nickel sulfide fire assay are widely applied as separation and pre-concentration procedures for gold and the platinum-group elements before instrumental determination.
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Pyrometallurgy of Copper-Nickel-Iron Sulphide Ores: The Calculation of Distribution of Components between Matte, Slag, Alloy and Gas Phases By Tom I. Barry, Alan T. Dinsdale, …
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Chemistry, Theory and Practice: Flotation of Sulfide Ores by Srdjan M. Bulatovic
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Both pyrometallurgical and hydrometallurgical methods have been adopted for production of nickel from sulfide/oxide ores. A flow sheet based on pyrometallurgical route practiced by the International Nickel Company of Canada for treatment of pentlandite is presented in Appendix: A.3a.
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Corrections can readily be performed by simple mass-balance calculations, using concentration data from unmineralized host rocks. Significant uncertainties are introduced by analytical errors for sulphur and metals, which are commonly measured from separate sample aliquots.
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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 ...
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Nickel occurs within both laterite and sulphide ores and it is also associated with deep-sea nodules. Nickel has several metallurgical benefits such as its high melting point of 1453 °C, ferromagnetic properties, catalytic behaviour and ease of electroplating, Anderson (1996). Principal industries consuming nickel are the chemical, petroleum ...
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According to data from 2000 (Reck et al., 2008), the nickel recovery rate in the nickel production stage was 82%, the end-of-life recycling rate was 57%, and the increase in the nickel in-use stock was about 59% of the annual nickel consumption.There is relatively little dissipation of nickel to the environment through usage, due to the non-dissipative use of nickel in steel, alloys, and ...
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In the nickel sulfide ores the predominant nickel-containing mineral is pyrrhotite (Fe,Ni) 9 S 8. This mineral is amenable to concentration through physical beneficiation methods such as flotation. The ability to concentrate the sulfide ores via standard procedures results in not only a premium nickel concentrate that is marketable but also one ...
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Nickel sulphide ores are found at Sudbury, Ontario and Manitoba. British Columbia is also a promising nickel-rich province with some exploration projects underway. The United States reported a reserve of 340 thousand tonnes in 2022 for three projects, and there are additional three domestic projects which have defined resources but have not yet ...
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Magmatic Nickel Sulphide Deposits. ... ores which are the most common ore type in most high-grade nickel deposits. Here sulphides range from 5 to as much as 50+% of the rock, forming a matrix between silicate minerals. ... There are several assumptions built into these types of calculations which mean they are far from perfect comparisons and ...
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Tenor (AKA sulphide metal content) is defined as the concentration of a metal, usually Ni, contained in sulfides. This is the nickel that can actually be extracted from the ore. Grade can be calculated from the product …
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KEY IDEA: Most nickel sulphide deposits have been overprinted by significant post-ore deformation and alteration which can be very significant economically. Deformation can …
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Hodgson and Agar (1989) reported that adsorption of calcium ions and sulfoxy species in process water contribute to hydrophilicity of pentlandite and pyrrhotite. The studies on a Finnish nickel–copper sulfide sample by Kirjavainen et al. (2002) showed that the presence of calcium and thiosulfate ions improved flotation of nickel and copper sulfides following grinding …
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