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SELECTIVE FLOTATION OF ULTRAFINE NICKEL …
The flotation of nickel sulphides is usually difficult due to low surface hydrophobicity compared to other sulphide ... about 0.6% Ni grade was in the feed (Peng and Seaman, 2011). After grinding ...
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Critical importance of pH and collector type on the flotation of
Collector type and pulp pH play an important role in the lead–zinc ore flotation process. In the current study, the effect of pulp pH and the collector type parameters on the galena and ...
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Some factors that affect beneficiation of sulphide nickel–copper ores
At Norilsk copper sulphides have been floated after depressing iron and nickel sulphides using steaming (Perepechin et al., 1975). As is known, the floatability of sulphides is stronger at slightly acid pH. ... The results confirm that the flotation results depend essentially on the grinding method in the flotation of Ni–Cu ores.3. Conclusions
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Redox potential control during flotation of a sulphide mineral ore
Section snippets Reagents. 0.1 M sodium hydroxide (NaOH) solution was used to adjust the pH in the flotation cell. 1% solution of Sodium Ethyl Xanthate (), supplied by Senmin, was used as collector at a dosage of 100 g/t.This is equivalent to an addition of 0.0007 mol of .Collector was prepared fresh each day. DOW 200, …
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NICKEL AND COBALT ORES: FLOTATION
Mackinawite (Fe,Ni)9S8 Up to 9 Arsenopyrite FeAsS Up to 0.5 Secondary Pyrite FeS2 Up to 12 Marcasite FeS2 Up to 6 Smythite Fe3.25S4 Up to 5 Tochilinite …
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Full article: The Direct Leaching of Nickel Sulfide …
The extraction of nickel from sulfide ores typically commences with comminution and flotation to produce a sulfide concentrate, which is subsequently …
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Selective depression of millerite (β-NiS) by polysaccharides in
Micro-flotation tests showed that dextrin can depress xanthate-treated millerite without deteriorating chalcopyrite (CuFeS 2) recovery when using potassium ethyl xanthate (KEX) as a collector, resulting in efficient Cu/Ni separation at both pH 9 and pH 12. X-ray photoelectron spectroscopy (XPS) analysis revealed that dextrin adsorption on ...
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(PDF) Developments in Flotation Technology
Abstract and Figures. Flotation which has significant usage area in mineral processing is starting to gain a new role in a wide range of studies with technological improvements. Different ...
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Sulphide Flotation
Sulfide ore flotation is a complex electrochemical system. Electron transfer not only occurs between the sulfide minerals and flotation reagent molecules, but it also happens …
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Principles and practice of sulphide mineral flotation
Mechanisms of the action of various flotation reagents, including collectors, activators and depressants, commonly used in sulphide mineral flotation are discussed in terms of the chemical and electrochemical principles …
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Geochemistry and genesis of magmatic Ni-Cu-(PGE) and PGE-(Cu)-(Ni
Magmatic sulfide deposits can be subdivided into 1) Ni-Cu-PGE deposits, which have relatively smooth mantle-normalized metal patterns, 2) Ni-Cu-(PGE) deposits, which are depleted in PGE relative to Ni-Cu-Co, and 3) PGE-(Cu)-(Ni) deposits, which are enriched in PGE relative to Ni-Cu-Co. China contains almost exclusively deposits in the …
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Feasibility Study of Differential Flotation of Cu–Pb–Zn Minerals …
In this research, flotation of copper, lead and zinc minerals from a copper oxide–sulfide ore was studied. The identification tests showed that the sample is a mixture of quartz, chalcopyrite ...
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Extraction of Platinum Group Metals | IntechOpen
A typical PGM content in the flotation concentrate is in Table 4 . The UG2 concentrate has higher chrome content when compared to the Merensky as seen in Tables 3 and 4. UG2 also has higher PGM content than the Merensky concentrate. The concentrate from the flotation cells is dried and smelted to separate the sulphides from the silicates .
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Differential Flotation of Chalcopyrite, Pentlandite and Pyrrhotite in
Abstract. A new method for the treatment of Ni–Cu sulphides ores from the Sudbury region by differential flotation is presented. The method exploits the ease of chalcopyrite floatability in complete or virtual absence of collector, but in the presence of sulphur dioxide, an effectivecomplexing agent such as diethylenetriamine (DETA) and a …
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A Review of the Flotation of Copper Minerals
The recovery of these copper minerals by flotation or hydrometallurgy from ores, typically containing 0.5%TCu (open pit mines) and 1-2%TCu (underground mines) is of great commercial importance ...
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A review of the effects of the grinding environment on the flotation …
1. Introduction. Wet milling in ball mills followed by flotation is the general practice employed in the beneficiation of copper sulphide ores in which the major minerals of commercial significance typically are chalcopyrite (CuFeS 2), bornite (Cu 5 FeS 4), covellite (CuS) and chalcocite (Cu 2 S). The flotation response of ground minerals can be …
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Oxidation on the Flotation Behaviour
Pn (-36per cent Ni), chalcopyrite, Cp (-34.5per cent Cu) and nickeliferous pyrrhotite, Po (0.3-1.2 per cent Ni in a solid solution form) as the principal sulphides along with pyrite and other sulphides in relatively small and variable amounts. Non-sulphide gangue minerals consist of mainly quartz and
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Flotation of a complex sulphide ore I.
mlEnnanoMt lounnnt of MIRRpl _ PROIEsSInG ELSEVIER Int. J. Miner. Process. 46 (1996) 155-179 Flotation of a complex sulphide ore I. (-a/Zn selectivity control by adjusting pulp potential with different gases X.-M. Yuan, B.I. Psson, K.S.E. Forssberg Department of Chemical and Metallurgical Engineering, LuleUnicersih, of Technology, S …
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Full article: The Direct Leaching of Nickel Sulfide …
The extraction of nickel (Ni) from sulfide resources commences with flotation to produce a concentrate which is then smelted to produce a nickel-enriched phase called matte, and further refined to produce pure Ni products as well as by-products, …
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Full article: The Direct Leaching of Nickel Sulfide …
Both Dyson and Scott (Citation 1976) and Filmer and Balestra (Citation 1981) showed that very little Ni dissolution from nickel sulfide flotation concentrates takes …
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Selective depression of millerite (β-NiS) by polysaccharides in
In addition to the depression of Ni recovery, Ni grade in the Cu concentrate also reduced at both pH 9 and pH 12. Therefore, dextrin was a suitable depressant for millerite in Cu-Ni flotation, the selectivity between millerite and chalcopyrite was greatly dependent on the pulp pH and dextrin's dosages. Download : Download high-res image …
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CHAPTER 7 FLOTATION OF SULPHIDE MINERALS
Of all the sulphides listed, galena exhibits the greatest sensitivity to sulphide iron; it is an effective depressant for galena. Lecture 5 Flotation 4 3. Chromate as depressant (CrO ... For new smelting practices, eg ISF furnace, and for precious metal recovery in sulphides, it is –– Flotation: ...
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Full article: The Direct Leaching of Nickel Sulfide Flotation
The CESL process has been tested on a range of nickel concentrates ranging in Ni grade from 2.1 to 20.4 wt% at bench and pilot plant scale, including concentrates high in MgO arising from the flotation of disseminated Ni sulfide ores which are not suitable for smelting (Jones et al. Citation 2010; Jones, Hestrin, and Moore …
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1 Froth Flotation – Fundamental Principles
no flotation can occur. Contact between particles and bubbles can be accomplished in a flotation cell such as the one shown schematically in Figure 5. Figure 5: Simplified schematic of a conventional flotation cell. The rotor draws slurry through the stator and expels it to the sides, creating a suction that draws air down the shaft of the stator.
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Flotation Reagents
Flotation Reagents. mixtures of chemicals, commonly known as reagents, is presented for the purpose of acquainting those interested in froth flotation with some of the more common reagents and their various uses. Flotation as a concentration process has been extensively used for a number of years. However, little is known of it as an exact ...
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A conceptual flowsheet of the Voisey Bay Process for Ni/Co/Cu sulphides
Hot filter cake (HFC) which is the zinc plant cobalt purification residue contains 22.83% zinc, 0.65% cobalt, 5.97% manganese and some trace elements such as iron, copper, nickel and lead.
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Pyrrhotite
Collectorless flotation studies on three lean nickel sulfide ores, from Outokumpu Finnmines Oy (Enonkoski (0.31% Ni and 0.14% Cu), Vammala (0.9% Ni and 0.45% Cu) and Hitura (0.32% Ni and 0.11% Cu)), ground in steel and ceramic mills at a pH range of 3–12 using polypropylene ether as frother revealed interesting details.
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MgO Depression in Ci-Ni Flotation
To participate in the 911Metallurgist Forums, be sure to JOIN & LOGIN; Use Add New Topic to ask a New Question/Discussion about Flotation.; OR Select a Topic that Interests you.; Use Add Reply = to Reply/Participate in a Topic/Discussion (most frequent). Using Add Reply allows you to Attach Images or PDF files and provide a more complete input.; Use …
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Selective depression of millerite (β-NiS) by …
In this study, the feasibility of using corn dextrin as a representative of polysaccharides to depress millerite (β-NiS) in the differential Cu-Ni sulphides flotation …
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Selective depression of millerite (β-NiS) by polysaccharides in
DOI: 10.1016/J.MINENG.2021.107139 Corpus ID: 238685155; Selective depression of millerite (β-NiS) by polysaccharides in alkaline solutions in Cu-Ni sulphides flotation separation
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