ofeffect of ph on bornite flotation

ofeffect of ph on bornite flotation

A STUDY OF FLOTATION AND LEACHING BEHAVIOUR

2011-3-17 · iv Statement of Originality I hereby certify that all of the work described within this thesis is the original work of the author. Any published (or unpublished)

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The critical degree of bornite surface oxidation in flotation

2020-8-15 · A high flotation recovery of 94.7% was obtained for the bornite treated at 0 wt% H 2 O 2.The treatment of bornite at 1 wt% H 2 O 2 led to a flotation recovery of 85.8%, which dramatically decreased to 6.15% at which bornite flotation reached a plateau, the recovery by entrainment, upon the treatment at 2 wt% H 2 O 2.A comparison with the chalcopyrite and chalcocite systems from our previous ...

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Effect of pH on pulp potential and sulphide mineral flotation

The pH of flotation has a large influence on xanthate oxidation and its adsorption by the mineral. Control of pH is one of the common methods for depressing pyrite and pyrrhotite in the flotation ...

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Effect of pH on the Recovery and Grade of Base Metal ...

2011-9-10 · PGMs. Flotation depends on a number of factors which include particle size, pulp density, reagent dosage and pH. In practice, selectivity in complex separation is dependent on a balance between reagent dosages and pH [1]. Thus reagents and pH should be delicately balanced to achieve optimum recoveries and grade. Previous studies on the

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pH Ranges for Sequential Cu Pb Zn Flotation | Separation

2015-12-6 · pH 10.5-12 is where Fe is least hydrophobic while Zn (and Cu/Pb) is most hydrophobic. Great pH to Recover Zn. By modifying Flotation pH to create kinetic/speed differences between the metals and achieve sequential flotation and take full advantage of the hydrophobic nature of each mineral, it is best to first lower the pH and see about ...

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Effects of pH and pulp potential on selective separation ...

2021-11-17 · Flotation pulp potential measured with an ORP electrode (Ag/AgCl) in presence of nitrogen gas and air. Air/nitrogen flow rate was adjusted at 2.25 l/min. The pulp potential including pH and oxidized- reduction potential were measured by pH and ORP electrodes (Metrohm 827, Switzerland), respectively. Mo and Cu content of samples were analyzed

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Effect of regrinding and pulp aeration on the flotation of ...

2014-11-1 · Impeller speed and pH during conditioning and flotation in the cell were maintained at 1000 rpm and 10.5, respectively for all experiments. Four flotation concentrates were collected after cumulative times of 1, 3, 6 and 10 min at an air flow rate of 2.5 dm 3 /min. The flotation froth was scraped every 10 s. The dry masses of the four ...

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Effect of pulp potential on the flotation of a sulfide ...

[Show full abstract] sulfide into the oxide cycle of flotation increases pH of the pulp from 7 to 9 in the first case and from 8 to 10 in the second case, which is favorable for an increase in ...

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Study of Flotation Parameters for Copper Recovery from ...

2020-4-1 · A detailed study was conducted to evaluate the effect of particle size, pH, flotation time, collector type and addition on efficiency of tennantite flotation. It was shown that maximum copper recovery of 95,3% was obtained at pH 12.3 by lime.It was suggested to grind up to 65.72% of -0.074 mm to achieve the optimum recovery of copper and high

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Cyanide chemistry and its effect on mineral flotation ...

2014-11-1 · Flotation recovery as a function of potential for chalcocite, chalcopyrite, and pyrite at pH = 9.2; [EX] = 1.44 × 10 −5 M for chalcocite and 2 × 10 −5 M for other sulphides (Ralston, 1991). In the presence of free cyanide, the surface potential of pyrite may be lower than the xanthate/dixanthogen equilibrium potential, thus inhibiting the ...

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effect of ph on bornite flotation

Molecular modelling and synthesis of a new collector O . In the process of mineral flotation, pH will affect the electrical properties of particles surface, 21 the hydrolysis of cations on particles surface, the hydrolysis of collectors, the adsorption of collectors at solid–liquid interface and the flotability of materials. 22 As it is widely known, CaO had a strong inhibition effect .

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The effect of water quality on the collectorless flotation ...

In a salt-water environment at pH 8, the recovery of bornite was reduced so substantially that it was likely taking place by means of entrainment alone, rather than true flotation ...

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Adsorption kinetics and thermodynamics of sodium butyl ...

2020-1-3 · In this paper, the effect of sodium butyl xanthate (NaBX) adsorption on the surface of bornite at different pH on flotation was studied by adsorption kinetic and thermodynamic. The flotation results demonstrated that the recovery was the highest when pH was 9 in NaBX solution (4×10−5 mol/L). The adsorption kinetics showed the reaction of NaBX on the bornite conformed to the second order ...

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Effect of pH on pulp potential and sulphide mineral flotation

The pH of flotation has a large influence on xanthate oxidation and its adsorption by the mineral. Control of pH is one of the common methods for depressing pyrite and pyrrhotite in the flotation ...

Read More
pH Ranges for Sequential Cu Pb Zn Flotation | Separation

2015-12-6 · pH 10.5-12 is where Fe is least hydrophobic while Zn (and Cu/Pb) is most hydrophobic. Great pH to Recover Zn. By modifying Flotation pH to create kinetic/speed differences between the metals and achieve sequential flotation and take full advantage of the hydrophobic nature of each mineral, it is best to first lower the pH and see about ...

Read More
Effect of pH on the Recovery and Grade of Base Metal ...

2011-9-10 · PGMs. Flotation depends on a number of factors which include particle size, pulp density, reagent dosage and pH. In practice, selectivity in complex separation is dependent on a balance between reagent dosages and pH [1]. Thus reagents and pH should be delicately balanced to achieve optimum recoveries and grade. Previous studies on the

Read More
Effects of pH and pulp potential on selective separation ...

2021-11-17 · Flotation pulp potential measured with an ORP electrode (Ag/AgCl) in presence of nitrogen gas and air. Air/nitrogen flow rate was adjusted at 2.25 l/min. The pulp potential including pH and oxidized- reduction potential were measured by pH and ORP electrodes (Metrohm 827, Switzerland), respectively. Mo and Cu content of samples were analyzed

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(PDF) Effect of H2O2 and potassium amyl xanthate on ...

Fe2p spectra of (A) chalcopyrite and (B) bornite for untreated and treated with oxidation treatment using 1 mM H 2 O 2 aqueous solution in the absence and presence of 0.1 mM PAX at pH 9.

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Study of Flotation Parameters for Copper Recovery from ...

2020-4-1 · A detailed study was conducted to evaluate the effect of particle size, pH, flotation time, collector type and addition on efficiency of tennantite flotation. It was shown that maximum copper recovery of 95,3% was obtained at pH 12.3 by lime.It was suggested to grind up to 65.72% of -0.074 mm to achieve the optimum recovery of copper and high

Read More
Process mineralogy as a key factor affecting the flotation ...

2019-4-12 · Fig. 1. Sieve analysis results of the flotation feed sample in the Sungun copper processing plant. 2.3. Flotation tests Two flotation tests were conducted using the same flotation machine (Denver D12) with a 4.5-L cell and an agitation speed of 1200 r/min. In both replicates, the sample mass was 1175 g and the pH was adjusted to 10.5. In each

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effect of ph on bornite flotation

Molecular modelling and synthesis of a new collector O . In the process of mineral flotation, pH will affect the electrical properties of particles surface, 21 the hydrolysis of cations on particles surface, the hydrolysis of collectors, the adsorption of collectors at solid–liquid interface and the flotability of materials. 22 As it is widely known, CaO had a strong inhibition effect .

Read More
Effects of pH and pulp potential on selective separation ...

2021-11-17 · Flotation pulp potential measured with an ORP electrode (Ag/AgCl) in presence of nitrogen gas and air. Air/nitrogen flow rate was adjusted at 2.25 l/min. The pulp potential including pH and oxidized- reduction potential were measured by pH and ORP electrodes (Metrohm 827, Switzerland), respectively. Mo and Cu content of samples were analyzed

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Centenary of Flotation Symposium - nanoparticles.org

2006-9-13 · THE INFLUENCE OF pH AND OLEATE CONCENTRATION ON CHROMITE FLOTATION (after Palmer, M.C.Fuerstenau and Aplan, 1975) This chromite, FeO.Cr 2O 3, assayed 42% Cr(III), 8% Al 2O 3, 4% Fe(III), 7% Fe (II), and 8% Mg(II), with a PZC at about pH 7. Flotation response at high pH match the hydrolysis peaks of FeOH and MgOH, respectively.

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Study of Flotation Parameters for Copper Recovery from ...

2020-4-1 · A detailed study was conducted to evaluate the effect of particle size, pH, flotation time, collector type and addition on efficiency of tennantite flotation. It was shown that maximum copper recovery of 95,3% was obtained at pH 12.3 by lime.It was suggested to grind up to 65.72% of -0.074 mm to achieve the optimum recovery of copper and high

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A study on the effect of active pyrite on flotation of ...

2018-6-27 · conditions of pulp such as the pH, type and concentration of reagents (collectors, depressants and frothers) also are the effective factors on the process efficiency. Hassanzadeh and Hasanzadeh (2016) evaluated the effect of three chemical reagent configuration on selective flotation in low and high pyritic copper sulphide ores.

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Process mineralogy as a key factor affecting the flotation ...

2019-4-12 · Fig. 1. Sieve analysis results of the flotation feed sample in the Sungun copper processing plant. 2.3. Flotation tests Two flotation tests were conducted using the same flotation machine (Denver D12) with a 4.5-L cell and an agitation speed of 1200 r/min. In both replicates, the sample mass was 1175 g and the pH was adjusted to 10.5. In each

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Evaluating the sulphidisation and flotation of oxidised ...

2021-11-12 · At pH 7.0, pyrite flotation was mainly controlled by xanthate concentration. At a low xanthate concentration, pyrite oxidation was the predominant anodic reaction and

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An Investigation of the Adsorption of Xanthate on Bornite ...

2021-8-21 · An atomic force microscope (AFM) was applied to study of the adsorption of xanthate on bornite surfaces in situ in aqueous solutions. AFM images showed that xanthate, i.e., potassium ethyl xanthate (KEX) and potassium amyl xanthate (PAX),

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Use of chelating agents as collectors in the flotation of ...

1999-2-1 · Fourteen reagents that are potentially capable of chelating with a metal ion on the surface of the major copper sulfide minerals and pyrite were evaluated for their effectiveness in floating these sulfides. The reagents studied fall into the classes of mercaptobenzole mutations, thiouronium, thionocarbamates, thiourea, imidazole mutations, oximes, hydroxyquinoline and xanthogen

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Combined Effect of Operating Parameters on Separation ...

2018-9-24 · This study aims to investigate the effects of operational variables on concentrate grade, recovery, separation efficiency, and kinetic parameters of the copper flotation process. For this purpose, the effects of the pulp solids content, collector and frother dosage, and preparation and concentrate collection time were studied using a Taguchi experimental design. The results of statistical ...

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