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CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

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 quantities. 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-

Flotation SGS

Flotation Sgs

Flotation is an incredibly robust and versatile process that works equally well on mixed sulphide, oxide, silicate ... bornite chalcopyrite covellite enargite galena molybdenite marmatite ... pulp density and pH monitoring and control through a DCS system COMPREHENSIVE

Effects of pH and pulp potential on selective separation

Effects Of Ph And Pulp Potential On Selective Separation

Flotation pulp potential measured with an ORP electrode AgAgCl in presence of nitrogen gas and air. Airnitrogen flow rate was adjusted at 2.25 lmin. 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

Effect of pH on the Recovery and Grade of Base Metal

Effect Of Ph On The Recovery And Grade Of Base Metal

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

CURRICULUM VITAE Jerome P Downey PhD PE

Curriculum Vitae Jerome P Downey Phd Pe

Optimization for Silver-Containing Bornite Flotation Concentrate Investigation of Methods to Enhance Copper, Silver, and Lead Extraction from Troy Mine, Ltd. Flotation Concentrate, 2014. Ashley Carter, M.S. in Metallurgical and Mineral Processing Engineering, hlorination and Vapor Phase

Flotation of a copper sulphide ore from Okiep using

Flotation Of A Copper Sulphide Ore From Okiep Using

froth flotation performance obtained with a bornite-rich copper sulphide ore from Okiep Copper Mine with a feed grade of 1.8 copper. Batch flotation tests were used to assess the performance in terms of mass-water recovery, sulphur grade-recovery and copper grade-recovery relationships and the Klimpel rate constant for copper recovery.

Influence of Pulp pH on Flotation of Fluorite and Calcite

Influence Of Pulp Ph On Flotation Of Fluorite And Calcite

Pulp pH value plays a significant role in the froth flotation. Especially in the flotation of fluorite, the performance of flotation will be affected greatly by pulp pH. MO, a new kind of modified fatty acid was used as collector, and H2SO4 and Na2CO3 were used to regulate pulp pH in the experiment. The mechanism of influence of pulp pH on flotation of fluorite and calcite was investigated by ...

Centenary of Flotation Symposium

Centenary Of Flotation Symposium

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 CrIII, 8 Al 2O 3, 4 FeIII, 7 Fe II, and 8 MgII, with a PZC at about pH 7. Flotation response at high pH match the hydrolysis peaks of FeOH and MgOH, respectively.

CANATUAN CUZN FLOTATION METALLURGY

Canatuan Cuzn Flotation Metallurgy

CANATUAN CUZN FLOTATION METALLURGY - DEALING WITH ZINC PRE-ACTIVATION C.V. Umipig1, E.E. Israel1, G.G. Hutalle1 and S.R. Williams2 1TVI Resource Development Phils Tabayo, Siocon Zamboanga del Norte, Philippines Corresponding author constante.umipigtvipacific.com.ph

Electrical separation CONCENTRATION OF MINERALS

Electrical Separation Concentration Of Minerals

Ph.D. Igor Bobin, Ph.D. Natalia Petrovskaya. MINING SERVICES. Concentration of minerals, mineral separation, enrichment of minerals, flotation, magnetic separation ...

PDF BULK FLOTATION OF COMPLEX COPPER ORE

Pdf Bulk Flotation Of Complex Copper Ore

Floatability of bornite is also pH related, where at a pH 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.

Analysis of the flotation behavior of complex copper ore

Analysis Of The Flotation Behavior Of Complex Copper Ore

Flotation tests were conducted on a Chilean copper ore containing chalcocite, bornite, and chalcopyrite using a Denver-type flotation cell at 0, 50, 100 gt NaHS and pH 8, 9, 10. At several points in the flotation tests, solutions were sampled for analysis of S ion in the solutions.

Solution Chemistry Study of Salttype Mineral Flotation

Solution Chemistry Study Of Salttype Mineral Flotation

Interactions of salt-type minerals with common inorganic flotation depressants were investigated through solution chemistry calculations. From the constructed conditional solubility product limits and the actual solubility product lines of calcium silicate and phosphate in fluorite, calcite, and apatite single-mineral systems, the critical precipitation pH or concentration of silicate and ...

The effect of pH solid content water chemistry and ore

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 ...

New Source of Unavoidable Ions in Bornite Flotation

New Source Of Unavoidable Ions In Bornite Flotation

Mar 08, 2013 This study aims to determine the presence and release of fluid inclusions in natural pure bornite while investigating the types, structures, and compositions of such inclusions. This work also measures the total concentrations of Cu CCuT, Fe CFeT, and Cl, SO42, which are released to the bornite aqueous solution from fluid inclusions. The results indicate that numerous fluid ...

Electrochemical flotation of sulfides the bornite

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 ...

Surface properties of coppersulfide minerals with sodium

Surface Properties Of Coppersulfide Minerals With Sodium

The bornite and chalcopyrite results indicated that Fe 2 O 3 was produced on bornite surfaces with an increase in pH, whereas the chalcopyrite surfaces were covered as the pH decreased. A flotation test was conducted using a Chilean copper ore that contained chalcocite, bornite, and chalcopyrite, and the flotation recovery of each mineral was ...

Study of the Surface Interaction between Copper Sulfide

Study Of The Surface Interaction Between Copper Sulfide

Jan 01, 2019 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 gt and three pH values 8, 9, 10.

The effect of water quality on the collectorless flotation

The Effect Of Water Quality On The Collectorless Flotation

Jun 06, 2012 A further series of flotation tests has been undertaken on chalcopyritequartz and bornitequartz mixtures to investigate the effect of increasing salinity by comparing the flotability in distilled water, brackish water, sea water and hypersaline water.

Sulfation Roasting of a Bornite Flotation Concentrate to

Sulfation Roasting Of A Bornite Flotation Concentrate To

Research was performed to evaluate copper and silver extraction from samples of bornite flotation concentrate. Sulfation roasting experiments were performed in a rotary tube furnace, a fluidized bed reactor, and a static bed muffle furnace. Roasting was plagued with rapid, low-temperature calcine sintering, apparently related to the presence of ...

The effect of underground mine water on performance

The Effect Of Underground Mine Water On Performance

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 ratiosthese

NIOSHTIC2 Publications Search 10004717 The Flotation

Nioshtic2 Publications Search 10004717 The Flotation

The flotation of chalcocite, bornite, chalcopyrite, and pyrite has been studied in a microflotation cell in which the potential of a bed of the mineral particles could be controlled electromechanically. The ethylxanthate-induced flotation of each mineral is markedly dependent on electrochemical potential, with the recovery changing from 0 to 100 pct in potential intervals of - 0.2 V.

PDF CH 2 Free Download PDF

Pdf Ch 2 Free Download Pdf

May 10, 2018 pH EhpH diagram for galena ethyl xanthate. Total amount of xanthate species was 104 M. Formation of S is assumed after Woods, 1988 100 -4 2x10 M KEtX flo tatio n r eco ver y, 80 60 -5 10 M KEtX 40 20 pyrite 0 0 2 4 6 8 pH xanthate flotation of pyrite 10 12 r ecover y dur ing fir st minut of flotation, 100 a 80 60 40 b 20 0 -0.5 ...

Surface properties of coppersulfide minerals with sodium

Surface Properties Of Coppersulfide Minerals With Sodium

The bornite and chalcopyrite results indicated that Fe2O3 was produced on bornite surfaces with an increase in pH, whereas the chalcopyrite surfaces were covered as the pH decreased. A flotation test was conducted using a Chilean copper ore that contained chalcocite, bornite, and chalcopyrite, and the flotation recovery of each mineral was ...

Danafloat

Danafloat

Even when neutral pH is used in roughing, the cleaner flotation stages are generally conducted at higher pH to ensure iron sulphide depression. When gold is present and of significant value, unfortunately lime can also reduce gold recoveries particularly if free or are associated with iron sulphide minerals.

Chelating Agents for Selective Flotation of Columbia

Chelating Agents For Selective Flotation Of Columbia

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 ... recommended the use of DMG for the flotation of chalcopyrite. bornite, malachite. pyrite and electrolytic copper and nickel. ...

THE EFFECTS OF AIRTOPULP RATIO AND BIAS FACTOR

The Effects Of Airtopulp Ratio And Bias Factor

flotation in the Jameson cell is shorter than in the conventional flotation devices and ... along with small quantities of bornite and tetrahedrite. The main gangue minerals are barite, quartz, cerussite and clay. The microscopically determined liberation size of chalcopyrite and sphalerite minerals ... and CaO was used as a pH regulator. The ...

A study on the effect of active pyrite on flotation of

A Study On The Effect Of Active Pyrite On Flotation Of

Merck was used for adjusting the pH of the pulp. A Denver-type laboratory flotation cell with a constant capacity of 2.5 dm3 and impeller speed at 1500 rpm was used. In each flotation experiment, 550 g of the sample was used. Before performing flotation

NEWCRESTS INDUSTRY FIRST APPLICATION Eriez

Newcrests Industry First Application Eriez

mineralogy is dominantly chalcopyrite and bornite with strong non-sulphide gangue mineral association. ... Lime for pH control to target pH 9 in the Roughers and pH 10 in the Cleaners ... Since flotation is a surface-controlled process, sulphide mineral exposures of these composite ...

Coupling mineralogy with physicochemical parameters in

Coupling Mineralogy With Physicochemical Parameters In

The Chelopech flotation circuit entails several stages, the first one is a bulk sulphide stage realised in four 100 m3 Outokumpu tank cells. pH is kept around 8.5, and a bulk sulphide concentrate containing all copper bearing minerals and majority of pyrite is collected and forwarded to a cleaner circuit.

THE USE OF PULP POTENTIAL CONTROL TO SEPARATE

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.

Effect of OisobutylNethyl thionocarbamates on flotation

Effect Of Oisobutylnethyl Thionocarbamates On Flotation

IBET has the best flotation at pH 10 and a dosage of 34 gt. SEMEDXS analysis revealed that the main copper-bearing minerals obtained after IBET application were chalcocite 10.845, chalcopyrite 8.1095, bornite 4.3199, covellite 1.0067, and tetrahedrite 0.0802.

Research of Laws PyriteBearing Slag Flotation of

Research Of Laws Pyritebearing Slag Flotation Of

slightly acidic and neutral pH range of the environment is disclosed. The influence of the method of water conditioning and of the concentration of metal ions in the prepared water on the performance of flotation is found. Keywords copper smelting slag, flotation, conditioning-tion, copper recovery 1. Introduction

Flotation Reagents Types and Working Principles CNFREE

Flotation Reagents Types And Working Principles Cnfree

Mar 15, 2019 Flotation reagents refer to the agent that used in mineral flotation process, which can adjust the flotation behavior of minerals thus achieving a good effect of mineral separation.Currently using flotation reagents is the most flexible, effective, and convenient method of controlling flotation process.The commonly used flotation reagents can be mainly divided into three types according to ...

Experimental study of the formation of chalcopyrite and

Experimental Study Of The Formation Of Chalcopyrite And

Feb 01, 2014 We report the hydrothermal synthesis of both chalcopyrite and bornite at 200300 C under hydrothermal conditions. Both minerals formed via the sulfidation of hematite in solutions containing CuI as a chloride complex and hydrosulfide, at pH near the pK a of H 2 Saq over the whole temperature range.