effect of ph on bornite flotation

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Decoupling the Effects of Pulp Potential and pH on the

22 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 64 8 92 and 11 Conditioning of the pulp was carried out at the set pH...

PDF A Review of the Flotation of Copper Minerals

Another important parameter whic h has a remarkable effect on the flotation of sulphide minerals is pH It is It is established that xanthates decompose in acidic environment and hence resulting...

NICKEL AND COBALT ORES FLOTATION

Figure 1 Effect of pH on collectorless flotation recoveries on Enonkoski noritic ore after grinding in steel mill Reprinted from Heiskanen et al 1991 with permission from Elsevier Science Figure 2 Effect of pH on collectorless flotation recoveries on Enonkoski noritic ore after grinding in ceramic mill Reprinted...

The effect of using pure thiol collectors on the froth

was poured into the flotation cell flotation was carried out at 30 solids by mass The impeller of the flotation cell was turned on and maintained at 850 rpm 3 Calcium hydroxide was added to raise pH to 10 and the slurry was aerated for five minute before further conditioning After which 20 ml of feed sample was drawn using micro syringe 4...

froth flotation batch test

Kinetics tests should be performed to evaluate the effect of the collector on the copper recovery and zInc displacement - The pH in the rougher flotation circuit should be evaluated For example 80 85 90 95 and 100 - Results from kinetics tests should give you the optimum conditions for the copper rougher flotation...

CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

sulphide minerals Bornite Cu 5 FeS 4 and covellite CuS and energite Cu 3 AsS 4 are normally present in lesser quantiti The complete flotation of chalcocite is achieved between ph = 1 to ph = 10 with ethyl xanthate The resulting hydrophobic species is CuX 1 Hydroxyl as depressant OH-...

Chelating Agents for Selective Flotation of

The flotation behaviour of chrysocolla for several structurally-related hydroxyoximes were studied as a ftmctioo of pH and oxime coocentration and the role of structural features examined The structural changes studied included substitutioos in chelating and non-chelating parts of the molecule...

PDF BULK FLOTATION OF COMPLEX COPPER ORE Khmer Lee

Floatability of bornite is also pH related where at a pH gt 10 its floatability improves greatly Flotation studies on arsenic removal Trace elements such as Arsenic bismuth cadmium lead and etc may also be present in varying amounts...

Water Quality in PGM Ore Flotation The effect of Ionic

This study investigates the interactive effect of plant water ionic strength and pH in the flotation of a sulphidic PGM bearing ore Results suggest that water quality variations may have effects at both the air-water interface as well as the mineral air interface Key words Froth stability Ionic strength pH Water quality Water recovery...

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 or...

How Does Pulp Concentration And pH Affect Froth Flotation

Sep 20 2019 0183 32 2 pH value of the pulp The pH value of the pulp has a great influence on the flotation index Minerals can only be fully froth flotation or inhibited under the appropriate pH value Adjusting agents such as lime sodium sulfate and sulfuric acid are needed to control the pH value There are two general methods of pH control...

Mining Industry Copper Sulfide Ore and Flotation Process

Jul 09 2019 0183 32 1 Types of copper sulfide ore 1 Single copper mineral Its ore characteristic is relatively simple and the only useful component that can be recycled is copper The gangue minerals are mainly quartz carbonate and silicate 2 Copper-sulfur ore Called copper-bearing pyrite In addition to copper minerals iron sulfide can be recovered and the main mineral of sulfur is pyrite...

The Importance of pH in Flotation

Aug 10 2015 0183 32 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...

Minerals Engineering Conferences

Effects of froth properties on dewatering of flotation products Na Zhang Xumeng Chen and Yongjun Peng The University of Queensland Australia The critical degree of bornite surface oxidation in flotation T Moimane Y Huai and Y Peng The University of Queensland Australia...

Effect of O

Feb 15 2020 0183 32 When the pH of the flotation system was 10 the recovery of Cu in the concentrate was the largest 9335 indicating that IBET has the best flotation effect on Cu at pH = 10 As IBET dosage increases Cu recovery in the concentrate also increases The recovery tended to be flat when the dosage exceeded 17 g/t...

Effect of pH on the flotation performance of incinerator

Oct 29 2018 0183 32 2019 Effect of pH on the flotation performance of incinerator fly ash Separation Science and Technology Vol 54 No 11 pp 1829-1841...

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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...

Oxidation Reduction Effects in Depression of Sulfide Minerals

Aug 20 2018 0183 32 The effect of oxidation/reduction potentials on the flotation separation of a massive copper-nickel chalcopyrite-pentlandite sulfide deposit has also been investigated through measurement of Eh in the conditioning stage The Eh of the pulp was increased by increasing the aeration rate potentials up to 01 V were obtained in this way...

Recovery of copper and cobalt in the comparative flotation

flotation of cobalt oxides from already is best at the pH of about 75 4 The flotation 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...

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 31 Effects of solid percent and pH at low level of Na 2 S...

The effect of pH solid content water chemistry and ore

Nov 19 2013 0183 32 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...

Centenary of Flotation Symposium

THE INFLUENCE OF pH AND OLEATE CONCENTRATION ON CHROMITE FLOTATION after Palmer MCFuerstenau and Aplan 1975 This chromite FeOCr 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...

Chalcopyrite Cu Sphalerite Zn Separation by Flotation

Apr 14 2016 0183 32 CONDITIONING AND BULK FLOTATION The classifier overflow at 90 minus 200 mesh and approximately 20 solids with a pH of about 10 is conditioned with Dow Reagent Z-200 This reagent has both promoting and frothing characteristics favorable to flotation of the copper and zinc with a minimum of pyrite...

Effect of O

IBET has the best flotation at pH = 10 and a dosage of 34 g/t SEM/EDXS analysis revealed that the main copper-bearing minerals obtained after IBET application were chalcocite 10845 chalcopyrite 81095 bornite 43199 covellite 10067 and tetrahedrite 00802...

A STUDY OF FLOTATION AND LEACHING BEHAVIOUR OF

Mar 17 2011 0183 32 Figure 14 Collectorless flotation of pyrite in the presence of Cu2 ions pH 92 flotation time - 5 min 15 28 Figure 15 Effect of atmosphere grinding flotation...

PDF The interactive effects of the sulphite ion pH

SYNOPSIS These effects were investigated in batch flotation studies and by the measurement of rest and pulp potentials At Iow additions of sulphurous acid as the pH regulator flotation rate increased with increasing concentrations of dissolved oxygen The recovery of chalcopyrite dropped significantly below a pH value of about 6 5 at 25 ppm of dissolved oxygen and below a pH value of...

US7007805B2

The invention relates to a hydroxamate composition for collection of minerals by froth flotation the composition including an aqueous mixture of hydroxamate wherein the pH of the composition is at least 11 and a method of collecting mineral values from an aqueous ore slurry by froth flotation...

Effect of pH on Pulp Potential and Sulphide Mineral Flotation

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 discussed with various electrod The electrodes were platinum gold chalcopyrite pyrite and galena In solution potentials were linearly dependent on pH with a different slope for each electrode...

The effect of water quality on the collectorless flotation

Jun 06 2012 0183 32 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...

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The Importance of pH in Flotation...

METHOD FOR IMPROVING SELECTIVITY AND RECOVERY IN THE

FIGS 9A and 9B illustrate the effect of using the new depressant mixture identified in Examples 5 and 6 on the quality of the concentrate and tailings waters respectively Two rougher-cleaner flotation tests were carried out using the procedure described in Example 3...

THE USE OF PULP POTENTIAL CONTROL TO SEPARATE

When the flotation response of enargite at pH 11 is compared with the flotation response of chalcocite at the same pH refer Figure 1 two possible windows wherein separation of chalcocite and enargite should be possible are obvious The first is a relatively narrow window between -150 mV and -25 mV SHE in which chalcocite floats ahead of enargite...

THE EFFECTS OF AIR

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...

Effect Of Ph On Bornite Flotation

Floatability of bornite is also pH related bornite g/t NASCOL 4461 Copper Flotation 0 1 2 Dosage 3 4 NASCOL 446 Figure 412 Effect of collector The effect of pH solid content water chemistry...

Effect of pH on pulping and flotation of mixed office

The Effect of pH on Pulping and Flotation of Mixed Office Wastepaper MA_D AZEVEDO J DRELICH and JD MILLER The effect of pulping reagents on the deinkingflotation of laser-printed wastepaper was investigated with regard to the removal efficiency of toner and mineral filler particles at different pH...

Correlation between copper

Correlation between copper-activated pyrite flotation and surface species Effect of pulp oxidation potential Daniel Fornasiero William Skinner Shuhua He Daniel Fornasiero William Skinner Shuhua He Related Papers Control of grinding conditions in the flotation...

Effect of P80 Grind Size on Flotation Collector

Oct 02 2017 0183 32 The pH of the flotation was held constant at 95 using lime Time cuts of concentrate were taken using a batch Wemco flotation cell with an automated paddle removal device at 30 seconds 1 2 4 8 and 16 minut Table 3 lists the overall R and K values measured for the total flotation feed run under each condition...

Critical importance of pH and collector type on the

Feb 04 2021 0183 32 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...

The impact of water quality on flotation performance

The impact of water quality on flotation performance pH Eh DO and dissolved species in recycle water streams eg thickener overflow decant tailings dam return contributing to a circuit water are also shown in Table I TDS and TOC levels may also be raised by reagent addition for pH control eg lime and recycled organics eg...

Study of Flotation Parameters for Copper Recovery from

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 123 by limeIt was suggested to grind up to 6572 of -0074 mm to achieve the optimum recovery of copper and high...

Effect of air velocity pH and frother concentration on

In this work the effect of pH air velocity Jg and frother concentration FC on the vitrinite separation of two coal samples from Colombia Cerrejón and Jagua was studied The experimental runs were carried out by flotation column at pH ranging from 4 to 10 FC from 2 to 6 ml of frother/kg of coal and Jg from 07 to 21 cm/s Jg Results...

AN INVESTIGATION OF COPPER RECOVERY FROM A

Fundamental adsorption micro-flotation and Eh-pH tests were conducted on pure Figure 28- pH effect on the activation of chrysocolla and subsequent recovery with sodium Comparison between collectorless bornite flotation and flotation with PAX...

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...

Flotation of a copper sulphide ore from Okiep using thiol

This paper investigates the effects of thiol collectors xanthates dithiophosphates dithiocarbamates and mixtures of these on the froth flotation performance obtained with a bornite-rich copper sulphide ore from Okiep Copper Mine with a feed grade of 18 copper Batch flotation tests were used to...

Study of the Surface Interaction between Copper Sulfide

Jan 01 2019 0183 32 This work addresses the study of the effect of pH and NaHS dosage on the flotation of a complex Chilean copper ore containing chalcocite bornite and chalcopyrite Flotation experiments were conducted using a Denver-type flotation cell and by investigating the effect of two NaHS dosages 50 100 g/t and three pH values 8 9 10...