Ni and Ni-Cu sulphide ores. Nickel-copper sulphide ores can differ significantly in the mineralogy of both the sulphide and the gangue minerals. Pentlandite is the major source of nickel, and often carries with it cobalt or precious group elements in economic concentration. Vast pentlandite deposits are processed in Canada, Australia, …
This paper reports on the development of a flotation and stirred-tank bioleaching process for recovering nickel, cobalt, and copper from pyrrhotite -rich tailings. Results of a high-level Techno-Economic Analysis (TEA) study of the proposed flowsheet are used to guide future R&D efforts. ... 82% Co, and 95% S Sulphide in 69% …
After the flotation process, nickel and cobalt are separated from copper. Through smelting, concentrated Ni–Co–S matt is obtained, separating from iron slag. ...
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 ...
The flotation characteristics of a nickel sulphide transition ore are investigated by laboratory tests with regard to two aspects, the recovery of magnesia bearing gangue, and the depression of ...
The extraction of nickel (Ni) from sulfide resources commences with flotation to produce a concentrate which is then smelted to produce a nickel-enriched …
This paper presents both the fundamentals of sulphide mineral flotation and the practical aspects of sulphide ore flotation. The fundamental aspects of the flotation of sulphide …
Low-grade ores, like nickel sulfide, are abundant on Earth. Nickel sulfide deposits contain high levels of magnesium silicate gangue minerals (MgO) and can be difficult to process with conventional flotation and smelting technologies. MgO is hydrophilic, which interferes with the flotation of sulfide minerals and reduces flotation …
Nickel; cobalt; pentlandite; nickel sulfides; hydrometallurgy 1. Introduction Nickel (Ni) is an essential metal for society with stainless steels being its major end use, though high purity nickel sulfate, a key raw material for production of …
The Bureau of Mines investigated the flotation responses of two copper nickel ore samples from the Duluth Complex with the objective of recovering bulk sulfide concentrates. One of the ores studied was taken from a test pit; the other was taken from a test shaft. The samples were quite similar except that the pit sample analyzed 0.35 pct …
The nickel extraction process is dictated by the mineralogical assemblage of the sulphide and oxide nickel ores from which it occurs. The rejection of pyrrhotite, which occurs commonly with ...
The extraction of nickel from sulfidic resources was described in Part I where it was shown that direct hydrometallurgical processing of nickel sulfide flotation …
Based on the data listed in Table 3, it was calculated that the percent copper extraction by XD 5640 reached 99.9%, and its percent stripping recovery reached 95.5%.The total recovery of copper in the process reaches 95% or more. It is also indicated that the co-extraction rate of nickel and cobalt was near to 0%, with no loses in the …
The effect of crystallochemical peculiarities of nickel sulphide minerals on flotation of copper–nickel ore. Author links open overlay panel ... So, the process of violaritization of the surface of pentlandite grains, which may occur during the flotation, will negatively affect its characteristics. ... between the nickel, cobalt and iron ...
intermediate nickel and cobalt products. The leaching process results in an aqueous nickel and/or cobalt sulfate solution. This solution is further treated through iron, manganese, and other impurity-removal and solvent-extraction stages. The solid residue from the leaching is a cake containing potentially precious metals, which can be
The aim was to identify the effect of surface interactions on the flotation of the nickel sulphide mineral, pentlandite, with magnesium-silicate bearing minerals …
Nickel and cobalt are among the strategic metals contributing to sustainability. ... when inefficiently depressed in the flotation process, report to the nickel concentrates causing dilution and finding their ways to smelter furnaces and build up at the bottom. ... The role of carboxy methyl cellulose in the flotation of a nickel sulphide ...
Economic Ni resources are usually found in either sulfide or laterite-type ores. Although about 60 % of world land-based Ni is associated with laterites, it remains dominantly produced from sulphide (∼60 %) resources (Meshram et al., 2019).Ni in sulfide ores is usually presented as pentlandite ((Ni, Fe) 9 S 8) and, sometimes, as …
In anticipation of future demands, a comprehensive understanding of the chemical and mineralogical characteristics of nickel-bearing minerals is a prerequisite to devising effective nickel beneficiation methods. Of particular importance are markers in the mineralogy of the flotation concentrate that inform beneficiation strategies to improve …
After the flotation process, nickel and cobalt are separated from copper. Through smelting, concentrated Ni–Co–S matt is obtained, separating from iron slag. ... The Direct Leaching of Nickel Sulfide Flotation Concentrates—A Historic and State-of-the-Art Review Part I: Piloted Processes and Commercial Operations. Miner. Process. Extr ...
From sulfide ores. Sulfide ores are crushed and ground in order to liberate nickel minerals from the waste materials by selective flotation. In this process, the ore is mixed with special reagents and agitated by mechanical and pneumatic devices that produce air bubbles. As these rise through the mixture, the sulfide particles adhere to their ...
The mineral composition of copper–cobalt ores is more complex than that of copper sulfides, and it is also difficult to discard tailing efficiently in primary flotation for the fine-grained disseminated of ore. In this work, a mineral liberation analyzer (MLA) was employed to study the characteristics of minerals. As a significant mineralogical …
The Direct Leaching of Nickel Sulfide Flotation Concentrates - A Historic and State-of-the-Art Review Part II: Laboratory Investigations into Pressure Leaching ... CESL process for nickel/cobalt/copper sulphides, testing in an integrated pilot plant, ALTA 1998 Nickel/Cobalt Pressure Leaching and Hydrometallurgy Forum, p. 12. Melbourne ...
optimum conditions for the flotation of nickel, copper and cobalt from a nickel-copper sulphide ore. The parameters investigated include collector dosage, percentage solids, …
The valuable minerals in copper and nickel sulphide minerals can be easily oxidized and lead to the reduction of flotation recovery. To solve the problem, the reaction mechanism of the hydroximic ...
The flotation treatment of nickel–copper sulphide ore at the Western China nickel mine has historically been difficult due to the presence of large amounts of serpentine minerals.[1] ... Investigation of the flotation performance of nickel sulphide by high intensity agitation pretreatment ... State Key Laboratory of Nickel and …
4 CESL Nickel Process The CESL Nickel Process offers a method of unlocking the nickel from disseminated nickel sulphide ore bodies. It is capable of treating lower grade nickel concentrates and those with a high content of magnesia. The process can also treat bulk nickel-copper-cobalt concentrates with no need for metal
In recent years, nickel cobalt sulfides (NCSs) have received much attention as promising functional materials in various application fields, mainly due to their much lower price, abundant raw materials and considerable reactive activity with relatively higher electrical conductivity, weaker metal–sulfur bond Celebrating International Women's …
1. Introduction. Nickel and cobalt are essential strategic metals that are widely employed in alloy materials, battery materials, and other industries because of their beneficial properties [1], [2].Nickel resources are broadly classified as nickel sulfide ore and laterite ore, with nickel sulfide ore accounting for only about 30% of total nickel …
For selective electrowinning of nickel and cobalt from liquid sulfides, the electrolyte consisted of nickel sulfide (Ni 3 S 2, 99.7% metals basis purity, Sigma Aldrich) cobalt sulfide (CoS, 99.5% metals basis purity, Fisher Scientific), barium sulfide (BaS, 99.7% metals basis purity, Alfa Aesar), and lanthanum sulfide (La 2 S 3, 99.5% metals ...
A thermodynamic analysis of the selective sulphidation process ( Harris, 2011) reveals that there is an operating window, where a nickel sulphide phase can be …
This therefore calls for a continual characterisation and optimisation of flotation parameters such that concentrator performance as a whole is always maintained. In this study, the robust Taguchi experimental design method was used to determine the optimum conditions for the flotation of nickel, copper and cobalt from a nickel-copper sulphide ore.
Nickel; cobalt; pentlandite; nickel sulfides; hydrometallurgy 1. Introduction The extraction of nickel from sulfidic resources was described in Part I where it was shown that direct hydrometallurgical processing of nickel sulfide flotation concentrates has several distinct advantages over pyro-metallurgy.
For sulphide ores, there is another alternative; if the ore can be concentrated by flotation, matte smelting is used instead of leaching. This combination of flotation and smelting effectively ... almost all nickel sulphide ores have been treated in this way; however, not all sulphide ores ... 3.1 Basic Process for Cobalt Separation from Nickel
DOI: 10.1016/J.MINENG.2007.01.011 Corpus ID: 98573418; Recovery of copper, nickel and cobalt from acidic pressure leaching solutions of low-grade sulfide flotation concentrates
Two conceptual block diagram flowsheets were proposed for Ni and Co extraction from the float tailings using an alkaline glycine-based leaching process, …
Recovery of copper, nickel and cobalt from the acidic pressure leaching solutions of Jinbaoshan (YN Province, PRC) low-grade sulfide flotation concentrates was investigated. The proposed technique includes four major steps: (1) the acidity adjustment of the acidic pressure leaching solutions; (2) solvent extraction (SX) …
AL process generally uses nickel sulfide concentrate as raw material, the main phases of which are nickel subsulfide, cuprous sulfide, and nickel–cobalt alloy [40, 41]. In the presence of sulfuric acid and oxygen, the solubility of metallic nickel, nickel subsulfide, and cuprous sulfide is different, as completely dissolved, partially ...
Proceedings of the International Conference on Mining, Material and Metallurgical Engineering Prague, Czech Republic, August 11-12, 2014 Paper No. 113 Flotation of Nickel-Copper Sulphide Ore: Optimisation of Process Parameters Using Taguchi Method Trust T. Masiya University of Zimbabwe, Institute of Mining Research P.O. Box MP167, …