nickel flotation selectivity

[PDF] NICKEL AND COBALT ORES : FLOTATION | Semantic Scholar

Most of the world's nickel is extracted from the mineral pentlandite, (Ni, Fe)9S8, which frequently occurs in ores containing predominantly pyrrhotite and various non-sulRdes, some of which contain magnesium (Table 1). The nickel content in such sulRde ores is generally low (0.2}3%) and varies from place to place in the same deposit. The low nickel content of the present-day nickel sulRde ...


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selective flotation of the bulk sulfide concentrate. The total copper and nickel recoveries in the rougher and scavenger stages as a function of grind time are shown in Figure 1, which indicates an improvement in recovery with increased grinding time. The rather large scatter in nickel recovery is due in part to analytical accuracy.


A Comparative Study of Kinetics of Flotation of a Copper ...

beneficiation of nickel ores. Flotation of a Canadian nickel ore by N-hydrocinnamoyl-N-phenyl hydroxylamine (HCNPHA), also called N-phenyl hydrochuiamohydroxamic acid (see Figure 1 for structure) and the comparison of performance of the synthetic collector with that of potassium amyl xanthate (PAX) are reported here.


A New Process for Cobalt Nickel Separation

nickel in liquor, but currently the favoured process is the selective solvent extraction of cobalt away from nickel, using phosphinic acid derivatives, e.g. Cyanex 272. Although this extractant works well in pure solutions, unfortunately it also extracts many other metals commonly found


Influence of sulfur-containing ions on selective flotation ...

1. During the reorganization of a beneficiation plant with water recycling, a close correlation between the selectivity of flotation of complex copper-nickel sulfide ores and the sulfoxide ion concentration in the recycled water and pulp was found. This necessitated the control of the ionic composition of the pulp. 2. Correction of the ionic composition of the pulp should be achieved by adding ...


The selective flotation of pentlandite from a nickel ore ...

Jun 01, 1995· ELSEVIER Int. J. Miner. Process. 43 (1995) 209-234 HITERnlITIOIliBaL JOURML OF mlnERgt PRO(ESSln6 The selective flotation of pentlandite from a nickel ore G.D. Senior, W.J. Trahar, P.J. Guy CSIRO Division of Mineral and Process Engineering, Box 312 Rosebank MDC, Clayton, Vic. 3168, Australia Received 14 June 1994; accepted after revision 15 December 1994 Abstract Nicke,1 …


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Nickel Catalysts (fixed bed, powders and droplets) Alumina Catalysts (extrudates and tables, including ... flotation personal care paints food food chemical food ore flotation intermediate ore deicing flotation personal care surfactants Detergents ... your selectivity to …


A selective flotation-spectrophotometric method for the ...

ARTICLE . A selective flotation-spectrophotometric method for the determination of nickel using dimethylglyoxime . Hamid Hashemi-Moghaddam *. Department of Chemistry, Islamic Azad University Damghan Branch, PO Box 36716-39998, …


Flotation Guidebook

The weakest and most selective dithiophosphate. It is good for copper, zinc, silver and nickel flotation, especially where activated minerals are present and selectivity is an issue. DSP 011 A selective collector, suited for recovery of copper, gold, silver and zinc sulphides. Used where greater recovery is needed that that obtained with DSP 012.


Development of a selective and sensitive flotation method ...

A simple, selective and rapid flotation method for the separation-preconcentration of trace amounts of cobalt, nickel, iron and copper ions using phenyl 2-pyridyl ketone oxime (PPKO) has been developed prior to their flame atomic absorption spectrometric determinations. The influence of pH, amount o …


THE SELECTIVE SULPHIDATION AND PHYSICAL UPGRADING …

iii with maximum grades of up to 6-7 wt% nickel being achieved and average grades of between 4-5 wt% nickel. Recoveries were approximately 50% on a sulphide basis


polymetallic ores Use of organic depressors for

Nickel flotation with pyrrhotite depression Pyrrhotite flotation with pyrrhotite depression V Low-nickel product (to storage) Fig. I : Basic flow-sheet for copper-niciri ore processing proved the selectivity of the flotation process. The grade of nickel concentrate increased up to 14.8% as compared with 13.4% with K-I without the use of


Effect of calcium and thiosulfate ions on flotation ...

Request PDF | Effect of calcium and thiosulfate ions on flotation selectivity of nickel–copper ores | Effect of calcium and thiosulfate ions on flotation of a Ni–Cu ore was investigated. The ...


Selective sulphidation and flotation of nickel from a ...

Dec 01, 2013· Highlights High temperature experiments demonstrated that selective sulphidation is feasible. Sulphides were submicron in size but could be physically upgraded. Nickel sulphides responded to flotation and grades of 6–8% were achieved. Low nickel grade was due to fine particle entrainment. Low nickel recovery was due to issues with fine particle grinding and flotation.


1 Froth Flotation – Fundamental Principles

1 Froth Flotation – Fundamental Principles Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a mineral/water slurry. The particles with attached air …


SciELO - Brasil - A selective flotation-spectrophotometric ...

A selective flotation-spectrophotometric method for the determination of nickel using dimethylglyoxime . Hamid Hashemi-Moghaddam * * e-mail: [email protected] Department of Chemistry, Islamic Azad University Damghan Branch, PO Box 36716-39998, Damghan, Iran. ABSTRACT


NICKEL | Metallurgists Perth | Perth | Strategic Metallurgy

Flowsheet development – Selective flotation. Testwork management. Definitive feasibility. 14.2mt @ 2.0% Nickel, 0.8% Copper and 0.07% Cobalt. 285,000t Nickel, 118,000t Copper and 10,000t Cobalt. Copper concentrate – 95% recovery to a 29% copper concentrate with silver. Nickel concentrate – 89% recovery to a 13.5% nickel concentrate with ...


Method of flotation of pentlandite from pyrrohotine ...

Selective Nickel concentrate is directed to pyrometallurgically redistribution, pyrrhotite - processed by autoclave hydrometallurgical technology. Depending on the features of flotation feed reagents may be concentrated or fractional. The products of flotation are volume …


Selective Flotation - Mineral Processing & Metallurgy

Sep 17, 2015· On the below Chart, selective flotation (separation) is obtained from the green line (1% mass) to the red line (4.5% mass). After >4.5% mass, you get mass pull, just mass. No selectivity, no concentration. You could float all day and yes get more mass. You could float off the whole tailings if you have enough time.


NANOPARTICLE FLOTATION COLLECTORS

developed to selectively deposit onto nickel mineral (pentlandite) in the presence of Mg/Si slime. Flotation tests of ultramafic nickel ores with these nanoparticle collectors have shown improvements in both pentlandite recovery and selectivity. However, cost-effective applications of nanoparticle flotation collectors have yet to be identified.


The Effects of Water Recycling on Flotation at a North ...

The selectivity between pentlandite and pyrrhotite minerals decreased for thickener overflow only, which explains the lower nickel + copper grade versus nickel recovery for the tests conducted with the thickener overflow. The selectivity between gangue and …


EFFECT OF PULP RHEOLOGY ON FLOTATION: THE NICKEL …

solids content in the flotation was 10 % by weight, the conditioning was carried out either at 10 or at 30% solids. .....44 Figure 4. 3 Effect of oil addition on selectivity of the flotation of the tested nickel …


Development of a Combined Flotation and High Pressure ...

The present study focused on the re-processing of copper and nickel from mine tailings. In this work, recovery of copper and nickel from mine tailing by combined process of flotation and high pressure oxidative leaching were considered. In the first stage, effects of flotation parameters including collector type, collector dosage, and pH and pulp density were examined.


Handbook of Flotation Reagents - MESA

Handbook of Flotation Reagents Chemistry, Theory and Practice: Flotation of Sulfide Ores by Srdjan M. Bulatovic • ISBN: 0444530290 • Publisher: Elsevier Science & Technology Books • Pub. Date: April 2007


CHAPTER 3 COMPARISON OF DIFFERENT PYRRHOTITE …

pyrrhotite collectorless flotation, it is difficult to achieve a clean separation between pentlandite and pyrrhotite. Pyrrhotite rejections has been a long-standing problem in the nickel industry. Nickel producers have been using a number of different strategies, sometimes in combination, to …


The Application of High Intensity Flotation Technology at ...

Conventional flotation technology has historically failed to achieve high recoveries when treating <15 μm particles (Lynch et al, 1981). The new StackCell™ flotation technology was developed to specifically target this particle size range, and was tested at pilot plant scale at Mt Keith Nickel Concentrator.


Chemistry and Applications of Chelating Agents in Flotation

Chemistry and applications of chelating agents in flotation and flocculation ... can function as good flotaids and selective flocculants. In addition to the metal selectivity, chelating ... nickel, tbiooxalate ion is Believed to form a more stable nickel chelate thlll the oxalate ion. For zinc, stability constlllts of the 0-


Flotation of Fully Liberated Low Grade Copper-Nickel Ore

Mar 21, 2021· minerals Article The Effect of Hydrodynamic Conditions on the Selective Flotation of Fully Liberated Low Grade Copper-Nickel Ore Haresh Kumar 1,*, Kirsi Luolavirta 1, Saad Ullah Akram 2, Hassan Mehmood 3 and Saija Luukkanen 1 Citation: Kumar, …


US4283017A - Selective flotation of cubanite and ...

A process for beneficiating a finely ground ore containing sulfide minerals of copper and nickel by selective flotation to produce a copper concentrate and a copper-nickel concentrate comprises pulping the ore with water to form a slurry, conditioning the slurry with an aqueous solution of SO 2 (H 2 SO 3 ) equivalent to from about 2 to about 4.5 pounds of SO 2 per ton of dry ore for a time ...


Flotation Solutions - Maximizing Mineral Recovery | Ecolab

Our range of flotation solutions include frother and collector programs for coal, copper, molybdenum, phosphate, potash, and more. All of our solutions address your process holistically, helping you optimize your flotation circuit to achieve greater selectivity, recovery, grade, and ultimately, cost performance.


v115n12a13 The effect of sodium carbonate on the ...

change the pH, but can also increase nickel flotation selectivity over MgO minerals (Pietrobon et al., 1997). Sodium carbonate may have an influence on both the mineral surfaces and solution chemical species. The mechanism by which sodium carbonate improves nickel flotation recovery has not been elucidated to date. In this study, the


Sequential Selective Flotation Process Flowsheet

Mar 08, 2016· A selective or sequential flotation flowsheet of two or more products. By utilizing selective flotation, two or more minerals in an ore are separated into individual high grade products. ORE TREATED: The most common of ores treated in this manner are lead zinc, copper-zinc-iron, copper-nickel, but application may be made to other two or three ...


Flotation of Nickel-Copper Sulphide Ore: Optimisation of ...

2. 2. Flotation Procedure All the flotation test-work was done using the Denver laboratory machine with a 1.5l stainless steel flotation cell. The required mass of nickel-copper sulphide ore material ground to 70% passing 75 µm was weighed and placed in the flotation cell. This was followed by the addition of distilled water to about


US5411148A - Selective flotation process for separation of ...

This invention provides a process for improved separation of mono/multi-metallic sulphide minerals from significant amounts of iron sulphides, mainly pyrrhotite and/or their finely divided process middlings. The process comprises subjecting such material to a conditioning stage with at least one water-soluble sulphur-containing inorganic compound as a prerequisite step for further conditioning ...