depression in copper flotation

the effect of sulphite on the xanthateinduced flotation of copper

The effect of sulphite ions on the xanthateinduced flotation of copperactivated pyrite has been studied Various techniques have been used to identify the plausible mechanisms of interaction of sulphite with both collector and pyrite surface It was found that sulphite depressed the xanthate induced flotation of…

Modelling of pyrite depression process by lime in copper

imperfection of technological processes of copper or zinc flotation at depression of iron sulphides by lime and secondly as the criteria for functional units of automation systems in optimization of these process Keywords Flotation Depression Thermodynamic models Pyrite Zinc Copper…

Flotation experiment research on a polymetallic sulfide ore of

selectively with depression of zinc and iron followed by reflotation of the copperlead tailing for recovery of zinc 9 The polymetallic separation flowsheet of copper lead bulk flotation–copper lead separation–priority floating zinc and pyrite from the bulk flotation tailings was…

2017Depressing behaviors and mechanism of

2017724 ensp 0183 enspYIN Z Wei S U N HU Y et al Depressing behaviors and mechanism of disodium bis carboxymethyl trithiocarbonate on separation of chalcopyrite and molybdenite J Transactions of Nonferrous Metals Society of China 2017 27 4 883890 …

PDF Diethylenetriamine depression of Cuactivated pyrite

DETA is mostly used in NiACu ore flotation for depressing pyrrhotite from pentlandite DETA has the ability to deactivate pyrrhotite and pyrite of copper ions whether it occurs as hydroxide or…

ROLE OF STARCH AND METABISUPHITE ON PURE PYRITE

Role of starch and metabisulphite on pure pyrite and pyritic copper ore flotation 43 occurred with 1 7 mg dm3 while 21 depression occurred with the same dosages of starch at pH 6 5 where pyrite flotation is expected to be weak at pH 10 …

BULK FLOTATION OF COMPLEX COPPER ORE academia edu

These are 1 sequential copper flotation from pyrite and other sulfides the most common practice in the treatment of sulfides ores and 2 bulk or semibulk flotation followed by copper– pyrite separation after regrinding of the bulk concentrate depression of pyrite may be a 9 problem because the pyrite can be activated by copper ions…

CANATUAN CU ZN FLOTATION METALLURGY

Copper zinc sulphide separation activation depression flowsheet INTRODUCTION TVI Pacific Inc is a publiclytraded resource company focused on the production development exploration and acquisition of resource projects in the Philippines TVI currently produces copper and zinc CANATUAN CU ZN FLOTATION METALLURGY…

Copper Molybdenum Flotation depressant Barium Sulphate

2019926 ensp 0183 enspRecovery of copper is by standard flotation reagents identified in the copper ore flotation description Molybdenum will float naturally with the copper but can be crowded in the froth by the copper mineralization and use of a moly collector such as diesel oil kerosene refined oils pine oil or xanthate ester enhances its floatability …

carbonate depression in flotation gkij

pyrite depression in copper flotation testfoodin carbonate depression in flotation Modelling of pyrite depression of pyrite in the flotation of copper ores pdf Online consultation 1 Froth Flotation Fundamental Principles Froth flotation is a good example of an engineering quotsystem in that the various important Problem A copper ore…

Depression of pyrite in porphyry copper flotation

20141218 ensp 0183 enspDepression of pyrite in porphyry copper flotation Ian Wark Research Institute Australian Research Council Special Research Centre For Particle and Material Interfaces M Zanin and S Farrokhpay Case Study…

Investigation of Flotation Parameters for Copper Recovery from

Feb 22 2012 The copper ore bearing enargite mineral contained 5 87 mass As and 16 50 mass Cu while the chalcopyrite bearing enargite chalcopyrite flotation 97 of enargite was first removed at pH 4 followed by chalcopyrite flotation at pH 8 and over 95 recovery Pyrite is naturally depressed at …

Selective Depression in Complex Sulphide Flotation AusIMM

Widely diverse mechanisms exist for the action of a range of selective sulphide flotation depressants Collector desorp tion leaching competitive adsorption formation of hydrophilic reactionproduct coatings action as reducing agents and action as latticeoxidizing agents are discussed Detailed attention is focused on the latter two mechanisms …

A review of the fundamental studies of the copper activation NCBI

Sep 9 2008 A review of the fundamental studies of the copper activation mechanisms for selective flotation of the sulfide minerals sphalerite and pyrite Chandra AP 1 Gerson AR Author information 1 Applied Centre for Structural and Synchrotron Studies University of South Australia Adelaide South Australia 5095…

Chapter 7 Depression of sphalerite with cyanide and zinc

20141210 ensp 0183 enspChapter 7 Depression of sphalerite with cyanide and zinc sulphate 105 Flotation pH at Rosh Pinah Therefore the presence of hydrophilic zinc hydroxide at the surface of sphalerite will prevent the interaction between the leadactivated sphalerite and xanthate and subsequently decrease its floatability in the lead flotation circuit Figure 7 1 …

The depression of copperactivated pyrite in flotation by

The depression of pyrite flotation is normally difficult especially when pyrite is activated by copper ions In this study different biopolymers modified from lignosulfonate were examined to depress the flotation of copperactivated pyrite …

redox conditions in the selective flotation of enargite

REDOX CONDITIONS IN THE SELECTIVE FLOTATION OF ENARGITE S H Castro and L Baltierra Department of Metallurgical Engineering Universidad de ConcepciónChile ABSTRACT Enargite Cu3AsS4 is a CuAs mineralogical species which occcurs in some Chilean porphyric copper ores deposits This mineral…

Role of starch and metabisulphite on pure pyrite and pyritic copper

Abstract Depression of pyrite is very important in sulphide ore flotation This paper investigates the role of nontoxic depressants on the flotation of pyrite Starch and meta bisulphite were used as a depressant for pure pyrite sample and a pyritic copper ore at two different pHs values pH was 6 5 and 10 in pure pyrite study…

depression of pyrite in the flotation of copper ores Research

thioglycolic acid behaviour in the separation of chalcopyrite from pyrite Proceedings of the 2nd JKMRC International Student Conference 2006 Hawkins R Goeldner D and Hill L Eds Julius Kruttschnitt Mineral Research Centre The University of Queensland pp 4555 Depression of Pyrite in the Flotation of Copper…

Pyrite Flotation Depression iopfoundation

pyrite depression in copper flotation – Grinding Mill China The Gulin product line consisting of more than 30 machines sets the standard for our industry …

The Effect of Sodium Silie as pH Modifier and

in the Froth Flotation of Molybdenite Ores ChulHyun Park and HoSeok Jeon Korea Institute of Geoscience and Mineral Resources Daejeon 305350 Korea In flotation of porphyry molybdenite ores or coppermolybdenite ores using oil collector a molybdenite MoS 2 concentrate has mainly been separated by combination of sodium silie Na 2SiO…

Froth flotation Wikipedia

Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic This is used in mineral processing paper recycling and wastewater treatment industries Historically this was first used in the mining industry where it was one of the great enabling technologies of the 20th century …

USE OF NONTOXIC DEPRESSANTS IN THE SELECTIVE

ground to below 200 181m and then collective and selective sulphide flotation tests were performed In flotation tests depression was achieved using nontoxic reagents and consequently individual copper lead and zinc concentrates assaying 31 68 Cu 67 69 Pb 49 79 Zn were obtained with 72 80 and 57 metal recoveries respectively …

Flotation Minerals Engineering International

The depression of pyrite in selective flotation by different reagent systems 12 20 Flotation of the major copper sulphide minerals – an electrochemical viewpoint 14 40 Oxidative weathering of a copper sulphide ore and its influence on pulp chemistry and flotation S Jacques Magotteaux Andino SA Chile C J Greet…

Pyrite Depression in Copper Flotation 911 Metallurgist

Mar 17 2017 The Pyrite Depression in a Copper Only Flotation circuit is simple enough If your froth flotation system only tries to recover chalcopyritecopper you need to bring the plant 39s pH up to the other side right side of the PYRITE curve The more flotation collector you have on the higher you will need to increase…

selective flotation of galena and sphalerite at rosh pinah mine

mechanisms of depression would be the complexation of surface copper with free cyanide and the precipitation of hydrophilic zinc hydroxide on the surface of sphalerite The experimentally determined effects of sodium cyanide and zinc sulphate dosages on the flotation of sphalerite from the Rosh Pinah composite ore are…

The Adsorption of Cu Species onto Pyrite Surface and Its Effect on

Dec 10 2015 The results indied that the flotation of pyrite appears to be activated with CuSO4 only at alkaline pH while being depressed at acidic and neutral pH The adsorption of copper ions on pyrite surface was pHdependent and the adsorption magnitude of copper ions at alkaline pH is higher than that at acidic…

MECHANISM OF SPHALERITE DEPRESSION IN AN OPEN

MECHANISM OF SPHALERITE DEPRESSION IN AN OPEN CU ZN FLOTATION SEPARATION CIRCUIT L Xia1 B Hart1 M Furlotte2 G Gingras2 C Olsen3 1Surface Science Western University of Western Ontario 999 Collip Circle LL31 London Ontario Canada N6G 0J3…

An improved flotation test method and pyrite depression by an

Flotation of coppermolybdenum sulphide ores in seawater entails critical challenges such as selective recovery of molybdenite effective pyrite depression and reducing the lime addition required to reach highly alkaline conditions It is essential that laboratory flotation tests aimed at solving these problems give reliable …

Alternatives For Sodium Cyanide For Flotation Control

Key words which were used in the broadly defined search were the following flotation ore treatment chalcocite chalcopyrite sphalerite galena pyrite and depress A total of 38 articles relevant to the topic of pyrite depression were identified in the computer search …

Roles of Depressants in Flotation of Sulphide Minerals

Thereafter the depression by cyanide and hydrogen peroxide is narrated respectively which are that for cyanide the formation of metal cyanide complex results in depression of minerals while for hydrogen peroxide the decomposition of xanthate salts gives rise to the inhibitation of flotation Lastly the depression by the thioorganic such as…

Dispersion effect on a lead–zinc sulphide ore flotation CiteSeerX

Jan 31 2009 in the flotation process preventing uncontrolled activation or depression effects Pereira and Peres 1988 investigated the flotation selectivity of a sulphide copper ore The concentrate chalcopyrite and bornite was contaminated by magnesium present in hypersthene an iron and magnesium silie …

CA2945354A1 Depression of copper and iron sulfides in

DEPRESSION OF COPPER AND IRON SULFIDES IN MOLYBDENITE FLOTATION CIRCUITS 0001 CrossReference to Related Appliions 168 This appliion claims priority to U S Provisional appliion No 61978720 filed on April 11 2014 titled DEPRESSION OF COPPER AND IRON SULFIDES IN MOLYBDENITE FLOTATION CIRCUITS the entire contents of which are incorporated herein for all…

Postregrind selective depression of pyrite in pyritic copper–gold

Mar 1 2015 The present study investigates the effect of aeration and diethylenetriamine DETA on the selective depression of pyrite in a porphyry copper–gold ore after regrinding at grind sizes d80 38 and 8 μm with respect to Au recovery and grade using oxygen demand tests flotation QEMSCAN Xray…

Flotation of mixed copper oxide and sulphide minerals with

Flotation of mixed copper oxide and sulphide minerals with xanthate and hydroxamate collectors K Leea D Archibaldb J McLeanc cause poor recoveries and an excess will cause the depression of oxide copper minerals Lee et al 1998 For mixed oxide and sul…

DEPRESSION OF COPPER AND IRON SULFIDES IN MOLYBDENITE

Feb 02 2017 nbsp 0183 32CROSSREFERENCE TO RELATED APPLICATIONS This appliion claims priority to U S Provisional appliion No 61 978 720 filed on Apr 11 2014 titled DEPRESSION OF COPPER AND IRON SULFIDES IN MOLYBDENITE FLOTATION CIRCUITS the entire contents of which are incorporated herein for all legal purposes …

Pyrite Depression in Copper Flotation

20191118 ensp 0183 enspThe Pyrite Depression in a Copper Only Flotation circuit is simple enough If your froth flotation system only tries to recover chalcopyritecopper you need to bring the plant s pH up to the other side right side of the PYRITE curve The more flotation collector you have on the higher you will need to increase that pH for effective pyrite depression …

PyriteGold Recovery in Copper Rougher Flotation Tailings

depression strategies e g aeration sulphite cyanide addition etc have been used over the years to minimise pyrite recovery In our previous study 7 the influence of Au mineralogy on its flotation was studied in a typical copper ore A twostage Cu and pyrite rougher flotation indied that maximum Au…

 

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