effect of ph on bornite flotation

A STUDY OF FLOTATION AND LEACHING BEHAVIOUR OF

Mar 17, 2011 · Figure 14: Collectorless flotation of pyrite in the presence of Cu2+ ions (pH 9.2, flotation time - 5 min). [15]. ..... 28 Figure 15: Effect of atmosphere (grinding, flotation

The Importance of pH in Flotation

Aug 10, 2015 · The Importance of pH in Flotation. In flotation, pH control is a vital method to control selective mineral separation. A standard depressant that is used is an Alkali. An Alkali is any substance that when mixed with Acid will neutralize each other and form a new chemical substance called a BASE. This is very important.

Adsorption kinetics and thermodynamics of sodium butyl ...

Jan 03, 2020 · 高达10%返现 · 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

AN INVESTIGATION OF COPPER RECOVERY FROM A

Fundamental adsorption, micro-flotation and Eh-pH tests were conducted on pure ... Figure 2.8- pH effect on the activation of chrysocolla and subsequent recovery with sodium ... Comparison between collectorless bornite flotation and flotation with PAX,

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

flotation experiments, including the addition in the flotation conditioning stage and 4 minutes lasting frothing. Fig. 3: The variation of the pulp potential as a function of time after addition of 16kg/t Na 2 S and aeriation. 3.1. Effects of solid percent and pH at low level of Na 2 S

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. ...

The Importance of pH in Flotation

Aug 10, 2015 · The Importance of pH in Flotation. In flotation, pH control is a vital method to control selective mineral separation. A standard depressant that is used is an Alkali. An Alkali is any substance that when mixed with Acid will neutralize each other and form a new chemical substance called a BASE. This is very important.

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

flotation experiments, including the addition in the flotation conditioning stage and 4 minutes lasting frothing. Fig. 3: The variation of the pulp potential as a function of time after addition of 16kg/t Na 2 S and aeriation. 3.1. Effects of solid percent and pH at low level of Na 2 S

Effect of pH on pulp potential and sulphide mineral flotation

Abstract. Control of pH is one of the most widely applied methods for the modulation of mineral flotation. In this study the effect of pH on potential in solution and sulphur minerals flotation is ...

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

Abstract—This study investigated the effect of pH on the recovery and grade of the Platinum Group Metals (PGMs) and base metal sulphides from the UG2 ore of the bushveld complex. This was achieved through running a series of test work in a Denver flotation cell at varying pH 6-11 at constant reagent dosage. The UG-2 reef is characterized by two

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

Jun 06, 2012 · Water quality had no effect on the collectorless flotation of chalcopyrite which was very strong, in excess of 96% copper recovery, but all three lower quality waters had a detrimental effect on the recovery of bornite compared to that obtained in distilled water. The depressant effect was so strong that the little recovery achieved in these ...

The critical degree of bornite surface oxidation in flotation

The degree of bornite surface oxidation was quantified as the ratio of hydrophilic to hydrophobic products. Bornite is more sensitive to surface oxidation by hydrogen peroxide than chalcopyrite and chalcocite. The critical degree of bornite surface oxidation, beyond which bornite flotation is impossible, is 5.66.

Critical importance of pH and collector type on the ...

Feb 04, 2021 · Changes in pH do not have a considerable effect on the average flotation rate constant of lead, but, the ultimate recovery is 5% higher at pH 6.

AN INVESTIGATION OF COPPER RECOVERY FROM A

Fundamental adsorption, micro-flotation and Eh-pH tests were conducted on pure ... Figure 2.8- pH effect on the activation of chrysocolla and subsequent recovery with sodium ... Comparison between collectorless bornite flotation and flotation with PAX,

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

Chalcopyrite, CuFeS2, is an important source of copper and is recovered from ore by the flotation process. Chalcopyrite is commonly associated with other metal sulfides, e.g. bornite, Cu5FeS4.

THE EFFECTS OF AIR-TO-PULP RATIO AND BIAS FACTOR ON ...

The effects of air-to-pulp ratio and bias factor on flotation of complex Cu-Zn sulphide ore 513 Experimental The ore was obtained from Cayeli Region of Turkey. Mineralogically, the ore consists of chalcopyrite, sphalerite, and pyrite, along with small quantities of bornite and tetrahedrite.

Selective flotation of enargite and chalcopyrite | Request PDF

Effect of H2O2 and potassium amyl xanthate on separation of enargite and tennantite from chalcopyrite and bornite using flotation. Article. Full-text available. ... The effects of pH ...

Minerals | Free Full-Text | Derivation of Flotation ...

Bornite recoveries also increased at any pH condition by a small dosage of NaHS. Moreover, the effect of pH was confirmed, and it was found that the floatability at low pH (pH 8) was higher than the high pH condition. This can be because of complex ion, Fe(HS) 2 0 .

Combined Effect of Operating Parameters on Separation ...

Sep 24, 2018 · 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 ...

Decoupling the Effects of Pulp Potential and pH on the ...

2.2 Effect of pH and Collector Concentration on Flotation To determine the effects of pulp pH on the flotation recovery of the pyrite mineral, representative subsamples were conditioned and floated at pH 4, 6.4, 8, 9.2 and 11. Conditioning of the pulp was carried out at the set pH

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

flotation experiments, including the addition in the flotation conditioning stage and 4 minutes lasting frothing. Fig. 3: The variation of the pulp potential as a function of time after addition of 16kg/t Na 2 S and aeriation. 3.1. Effects of solid percent and pH at low level of Na 2 S

Improving Flotation of Sphalerite - Effect of pH and ...

The pH was monitored as the flotation pH. 3. The water-mineral mixture was then transferred into the microflotation cell, and floated with N 2 at an average flow rate of 25 cm 3 for 20 seconds. The final pH was measured to ensure that no appreciable change had occurred during flotation. 6.4. Results and Discussion 6.4.a. Effect of pH on the ...

Minerals | Free Full-Text | Derivation of Flotation ...

Bornite recoveries also increased at any pH condition by a small dosage of NaHS. Moreover, the effect of pH was confirmed, and it was found that the floatability at low pH (pH 8) was higher than the high pH condition. This can be because of complex ion, Fe(HS) 2 0 .

Adsorption kinetics and thermodynamics of sodium butyl ...

Abstract: 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 ...

The effect of underground mine water on performance of the ...

The flotation pH is, however, slightly different. East ore responds better at a higher pH of 10.5 while the west ore is best floated at a pH of 9.5 (Table I). The reason for this difference is not precisely known but this is likely attributable to the slight mineralogical variation in the host rock and the bornite to chalcopyrite ratios—these

CHAPTER 7 EFFECT OF CONDITIONING pH ON SULPHUR,

CHAPTER 7 EFFECT OF CONDITIONING PH ON FLOTATION 96 flotation pH of 7.2. At this point, the pulp potential was 0.3V. Flotation was then carried out using the reagent suite of the standard. 7.2 Results and Discussion 7.2.1 Sulphur Table 7.1 shows sulphur flotation initial rates and corresponding final recoveries for the two conditioning pHs.

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

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.

Considering the effect ofm pulp Chemistry during flotation ...

and batch flotation tests were used to obtain the total water and solids recovered, the grades and recoveries of the valuable minerals as well as to determine entrainment. Further tests were performed to investigate the effect of changing the pH on the Eh in a 3-phase system in which all the other pulp factors were kept constant.

Mineralogical Prediction on the Flotation Behavior of ...

The copper ore in Chilean copper porphyry deposits is often associated with molybdenum minerals. This copper–molybdenum (Cu–Mo) sulfide ore is generally mined from various locations in the mining site; thus, the mineral composition, oxidation degree, mineral particle size, and grade vary. Therefore, in the mining operation, it is common to blend the ores mined from various spots and then ...

Combined Effect of Operating Parameters on Separation ...

Sep 24, 2018 · 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 ...

The effect of pH, solid content, water chemistry and ore ...

Nov 19, 2013 · The role of pH, solid content, water chemistry and ore mineralogy on the galvanic interactions between chalcopyrite and pyrite and low alloy steel balls were investigated in the grinding of Sarcheshmeh porphyry copper sulfide ore. All these factors strongly affect the galvanic current between the minerals and the steel during the grinding process. The galvanic current density decreased as the ...

Recovery of copper and cobalt in the comparative flotation ...

flotation of cobalt oxides from already is best at the pH of about 7.5 [4]. The flotation foam of a mineral sulphide Cu-Co produce a Cu-Co bulk concentrate. During the flotation, Cu-Co float at natural pH or pH 11 using xanthate or dithiophosphate. This occurs when the copper mineralization as chalcocite.

Electrochemical flotation of sulfides: the bornite ...

The electrochemical nature of mineral-collector interactions and their relationship to flotation have been investigated to develop a better understanding of the factors controlling sulfide mineral beneficiation. Spectrophotometric and electrochemical techniques have been used to examine the reactions occurring on electrodes composed of a bed of bornite particles in the presence and absence of ...