· The average pyrite content in the concentrate increased from 6% to 14% with an increasing size fraction. The sample comprised 30% pentlandite in the −300 +150 µm, 30% in the −150 + 75 µm, 31% in −75 + 38 µm, and 28% in the −38 + 20 µm blocks, with a minor amount of violarite (less than 2%).
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ELSEVIERInt.J.Miner.Process.43199509-34HITERnlITIOIliBaLJOURMLOFmlnERgtPROESSln6TheselectiveflotationofpentlanditefromanickeloreG.D.SeniorW.J.TraharP.J
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· However, since the production from Nickel Rim South Mine was brought online, Glencore’s flotation plant Strathcona started processing a higher grade ore with 1.57% Ni and 2.85% Cu ([]). 2.2 Challenges in Processing of Nickel-Copper Sulphide Ores
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· It has been found that High Intensity Conditioning (HIC) significantly increases the flotation rate of pentlandite from a nickel ore. A systematic investigation of slime surface coatings and the effect of HIC on surface cleaning of the nickel ore was carried out using Scanning Electron Microscopy (SEM), Image Analysis, X-ray Diffraction
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Pyrrhotite is known to Soat poorly in alkaline media; therefore the general practice is to selectively Soat pentlandite from pyrrhotite, by maintaining a highly alkaline pH with
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· Pentlandite is very important to the mining industry since it is the main source of metallic nickel. However, its separation from hexagonal pyrrhotite by froth flotation is challenging due to their similar floatabilities, and inefficiencies in this process generate environmental issues caused by emissions of sulfur oxide gases during the
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: G.D. Senior, W.J. Trahar, P.J. Guy · The procedure exploits the particle size dependence of pentlandite and pyrrhotite flotation, the different ways that pH change and each of the reagents copper
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· Flotation kinetics of pentlandite and violarite contained in copper–nickel ores and the effect of crystallochemical peculiarities of the minerals on their flotation features are studied.
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Semantic Scholar extracted view of "Selective flotation of fine-grained pentlandite from low grade polymetallic ore" by H. Kumar et al. DOI: 10.1016/J.MINENG.2018.10.001 Corpus ID: 104660207 Selective flotation of fine-grained pentlandite from low grade
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· Semantic Scholar extracted view of "Influence of mineralogy and ore texture on pentlandite flotation at the Nkomati nickel mine, South Africa" by G. Mishra et al. DOI: 10.1016/J.MINENG.2013.04.009 Corpus ID:
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· High Intensity Conditioning improved pentlandite flotation from a nickel ore. Specifically, High Intensity Conditioning increased the flotation rate of pentlandite contained in the 8 to 75 μm particle size range. There was
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· In this work, selective flotation of copper-nickel sulfide ore was achieved by using a selective depressant of sodium phytate. Microscale flotation results show that sodium phytate can selectively and effectively depress talc flotation, but has a minor effect on the floatability of chalcopyrite and pentlandite.
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· It is well known that in the flotation of copper-nickel sulfide ore, pentlandite and serpentine are easy to form hetero-aggregation, which makes it difficult to separate them. Therefore
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Oxidation Behavior and Mechanism of Pentlandite at 973 K (700 °C) in Air. Huihui Zhu Jun Chen J. Deng R. Yu X. Xing. Materials Science. Metallurgical and Materials Transactions B. 2012. The oxidation behavior of synthetic pentlandite at 973 K (700 °C) under isothermal conditions was investigated. The pentlandite sample (Ni,Fe)9S8 was
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· Request PDF | The effect of using sodium di-methyl-dithiocarbamate as a co-collector with xanthates in the froth flotation of pentlandite containing ore from Nkomati mine in South
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· Flotation of a low grade pentlandite ore containing large amounts of serpentine minerals from Western Australia was conducted with process water having high ionic strength. Nickel recovery was low
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· The sulphidation of a nickeliferous lateritic ore was studied at temperatures between 450 and 1100 °C and for sulphur additions of 25–1000 kg of sulphur per tonne of ore. The experiments demonstrated that the nickel could be selectively sulphidized to form a nickel–iron sulphide. It was found that both the grade and the
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· This chapter explains the process of nickel concentration from ground sulfide ore, the starting material. This is necessary because mined nickel sulfide ores contain between 1% and 3% Ni only and
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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. The parameters investigated include collector dosage, percentage solids, depressant dosage and pH. The effects of these parameters at three different levels
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· A process for beneficiating a nickel sulfide ore in a selective manner comprising wet grinding the ore to liberation of minerals in the presence of sodium carbonate, treating the ground pulp at a pH of about 10 with sodium cyanide to depress the mineral content
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Selective bioleaching of a pentlandite–chalcopyrite concentrate in the presence of A. ferrooxidans in a bioreactor yielded preferential nickel extraction (55%). In the presence of unadapted and adapted strains of A. ferrooxidans , about 87% and 91% nickel recovery could be obtained from nickel-rich pyrrhotite concentrates.
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： High Intensity Conditioning improved pentlandite flotation from a nickel ore. Specifically, High Intensity Conditioning increased the flotation rate of pentlandite contained in the 8 to 75 μm particle size range. There was
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· Selective rejection of talc in the third flotation stage is achieved by the addition of sufficient guar gum to depress talc and of sufficient copper sulphate to activate pentlandite i.e., by minimising the rate of talc flotation and maximising the rate of
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: G.D. Senior, W.J. Trahar, P.J. Guy · The effect of using pure thiol collectors on the froth flotation of pentlandite containing ore. Sodium ethyl and potassium amyl xanthates are commonly used in bulk
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· Pyrrhotite (Po) is one of the most abundant sulfide minerals in processing industry and must be rejected in most cases. Particularly, Po rejection and its selectivity against pentlandite (Pn) have long been a challenge due to similarities in the mineral composition of the two minerals and the collectorless flotation characteristics of Po.
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· Furthermore, nickel sulphide ore reserves are declining and the available ores are mostly of low nickel content. Sodium ethyl xanthate (SEX) and potassium amyl xanthate (PAX) are respectively used in bulk and selective froth
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· Nickel sulfide minerals are a primary nickel source for industrial beneficiation, in which froth flotation is the main method employed (Liu et al., 2018a; Yu et al., 2019; Peng et al., 2020). The rapid depletion of high-grade ores has created a critical demand for processing low-grade nickel sulfide ores containing high quantities of
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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
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Semantic Scholar extracted view of "Flotation of chalcopyrite, pentlandite, pyrrhotite ores" by G. E. Agar DOI: 10.1016/0301-7516(91)90039-L Corpus ID: 98592112 Flotation of chalcopyrite, pentlandite, pyrrhotite ores @article{Agar1991FlotationOC, title={Flotation
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· Low grade sulfide ores are difficult to process due to their composite mineralogy and their fine grained dissemination with gangue minerals. Therefore, fine grinding of such ores becomes essential to liberate valuable minerals. In this research, selective flotation was carried out using two pitched blade turbine impellers with
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Trituradora de piedra vendida por proveedores certificados, como trituradoras de mandíbula/cono/impacto/móvil, etc.
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