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This interpretation has several implications for the mode of emplacement of sulfides, their degree of equilibration with the host komatiite, and the compositions of sulfide ores: (1) the solubility of sulfur in komatiite is relatively low, so most of the sulfide in eroded sediments will be melted and remain as a dense layer at the base of the ...
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Abstract The oxidation-induced alteration of properties of sulfide minerals is analyzed. The air-and-gas content and thermodynamic parameters of mine air are experimentally investigated as a case-study of blind roadways in sulfide deposits at a depth of 300–1500 m. The microclimate conditions of sulfide ore oxidation are determined and …
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However, with the diminution of high-grade nickel sulfide ores, recovering nickel from laterite nickel ore as an alternative of nickel sulfide ores is drawing increasing attention since laterite nickel ore constitutes 72.2% of the world's land-based nickel reserves [6,7,8]. Therefore, an economical method is urgently needed for recovering ...
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Table 1 Percentage nickel in nickel sulfide ores . Full size table. Table 2 Table for nickel laterite ore mineral types . Full size table. 2.1.1 Global distribution of Nickel Ore. Nickel laterites are found in Indonesia, Philippines, New Caledonia, and Murrin Murrin in Western Australia. Nickel is mined in more than 25 nations throughout the world.
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number of processes have been developed to leach sulphide ores and concentrates and the conditions are well established. However, there is a renewed interest in hydrometallurgical processes for copper production due to environmental issues and the increasing need to exploit mixed and low grade ores and re latively small isolated deposits.
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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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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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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 ...
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Nickel sulfide ores can be classified in terms of the rock types with which they are associated and the tectonic setting into which these rocks were emplaced. Certain combinations of rock type and tectonic setting have proved to be particularly productive. These are (1) noritic rocks intruding an astrobleme (Sudbury); (2) intrusions feeding ...
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In this work, a two-stage sulphuric acid roasting and water leaching system was chosen to extract valuable metals from Chinese low-grade nickel sulphide ore. By optimizing the two-stage roasting process, first roasting temperature at 295°C with particle size of 80–91 μm with an acid-ore ratio of 1.1:1 for 2 h, and second roasting temperature …
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The main assumption underpinning the predictive calculations is phase and chemical equilibria could be calculated reliably from critically assessed ... Nickel-bearing sulfide ores are primarily treated by pyrometallurgy process at present (Wang and Gao, 2010; Liu and Xu, 2011; Thyse et al., 2011; Thyse et al., 2013). High grade nickel matte …
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Cobalt, as a key element of LiNixCoyMnzO2 cathode materials, is becoming progressively crucial. The cobalt-rich copper sulfide ores in Africa are one of the most important cobalt resources in the world. However, few literatures aimed at cobalt-rich copper sulfide ores were reported. In this study, the process of activation roasting …
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Nickel sulfide and nickel oxide ores are the two primary resources for nickel production . Nickel sulfide ores are mainly distributed in the high latitudes of the Northern Hemisphere, such as Canada, Russia, and northern China. ... The valorization analysis is displayed in Table 10 and the value recovery rate is 78.81% by calculations. …
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The raw material base of the nickel industry includes two types of ores: copper-nickel sulfide ores and oxidized nickel ores (ONO) [].Copper-nickel sulfide ores account for 30% of the global nickel reserves and about 65% of the global nickel production [1,2,3,4].In recent decades, an increase in nickel consumption and …
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Nickel slags can be produced through ferronickel preparation by the pyrometallurgical processing of laterite nickel ores; however, such techniques are underutilized at present, and serious environmental problems arise from the stockpiling of such nickel ores. In this study, a modification to the process of ferronickel preparation by …
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The work is devoted to the viscosity determination of molten slags from the joint smelting of oxidized nickel and sulfide copper ores. The model slags were synthesized close in composition and structure to real samples, and limiting the investigated composition range (wt.%): iron-containing slag (8.9 CaO, 11.8 MgO, 12.5 Al 2 O 3, 47.4 …
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1. INTRODUCTION TO NICKEL SULPHIDE EXPLORATION. Jon Hronsky Western Mining Services (Australia) June 2007. 2. INTRODUCTION. •This presentation provides a succinct introduction to nickel sulphide geology -- a complex field with many uncertainties that remain to be resolved. •Our intent is to communicate the KEY IDEAS that form the basic ...
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Treatment of laterite ores of nickel to produce ferronickel, matte or precipitated sulphide. January 1987. In book: Extractive Metallurgy of Nickel (Crit. Rep. Appl. Chem. 17) (pp.51 - 75) Chapter ...
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The violarite content in ores of the Kola peninsula is approximately 5% of the nickel minerals sum, but at different deposits the violarite to pentlandite ratios vary considerably. In particular, in samples of rich sulphide ore of the Allarechensk deposit stored in tailings for several years violarite prevailed over pentlandite.
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In comparison, komatiites typically have <60 ppm of both Zn and Cu, whereas contact sulphide ores have Zn values <100 ppm and Cu values >400 ppm. Thus the Cu : Zn ratio can aid in discriminating between ore and non-ore sulphides, even in the presence of moderately elevated Ni values (i.e. 0.4 wt% Ni) in the sedimentary horizons.
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Abstract. Sulphide Ni–Cu deposits occur typically in mafic and ultramafic igneous rocks and intrusions. The occurrence of minerals affects the separation efficiency of the sulphides. Coarse grained ores are often relatively easy to process, but some ores have altered in metamorphosis. Disseminated secondary minerals often require fine ...
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This experiment suggests that the unusual chromite (low in Mg and Al) which is associated with the sulphide phase in Western Australian nickel ores may have formed in a similar way. View Show …
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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 …
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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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At the same time, hydrometallurgical techniques are often considered as alternative approach for treatment of low-grade sulfide ores and substandard concentrates containing copper, nickel, and PGM ...
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Nickel Sulfide Ores and Impact Melts: Origin of the Sudbury Igneous Complex presents a current state of understanding on the geology and ore deposits of the Sudbury Igneous Complex in Ontario, Canada. As the first complete reference on the subject, this book explores the linkage between the processes of meteorite impact, melt sheet formation, …
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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 nickel and even other similar metals. The main metallurgical methods include pyrometallurgical and hydrometallurgy, containing smelting, leaching, and ...
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Metal ores are generally oxides, sulfides, silicates (Table 12.3.1 12.3. 1) or "native" metals (such as native copper) that are not commonly concentrated in the Earth's crust, or "noble" metals (not usually forming compounds) such as gold (Figure 12.3.1 12.3. 1 ). The ores must be processed to extract the metals of interest from the waste rock ...
DetailsCut-off grade sulfide ores from both abandoned and currently developed deposits, overburden rock while being a major source of non-ferrous metals, pose a serious environmental hazard if unprocessed.
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Nickel* CATHERINE KLEIN, MAX COSTA, in Handbook on the Toxicology of Metals (Third Edition), 2007. 3.1 Production. Nickel exists as a natural earth element, primarily in sulfide or oxide ores that are mined underground or in open pits. It is the 24th most abundant element on earth, with the greatest deposits of nickel ores in Canada, Siberia, and New …
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Nickel (Ni) and Cobalt (Co) deposits are important mineral resources, and China is the largest consumer of these resources. Magmatic, hydrothermal, sedimentary, and meta-sedimentary ore …
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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 of tenor multiplied by the proportion of sulfides in the rock, a property which is easily estimated from basic core …
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Battery manufacturing together with the demand for stainless steel is the biggest driver for the global nickel mining industry. About 60% to 70% of the current worldwide nickel resources are derived from laterites whereas the rest is extracted from nickel sulfide ores [1,2].However, nickel laterites account currently only for about 40% …
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