Flotation Behavior Of Arsenopyrite And Pyrite

Development Of Processing Alternatives For

Mineralization at the Frankfield project contains arsenopyrite and pyrite as the major sulphide minerals Bulk flotation of all sulphides results in extremely high gold recovery However the gold is almost entirely associated with the arsenopyrite fraction of the ore and is refractory in

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Us5171428a Flotation Separation Of Arsenopyrite From

On addition of a collector the pyrite is rendered floatable enabling froth flotation to achieve a concentrate rich in pyrite and tailings rich in arsenopyrite Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO 3 ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite

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Chemistry Of Pyrite Depression In Flotation

Pyrite depression with dextrin occurs around pH 8 so using dextrin could lower the pH in flotation processes operating at high pH such as the flotation of copper in porphyry ores and flotation of zinc in polymetallic basemetal sulfide ores

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Flotation Separation Arsenopyrite

Selective Flotation of Pyrite from Arsenopyrite by Low In this study the surface modification of arsenopyrite and pyrite with low temperature oxygen plasma was developed as an effective approach to improve the flotation separation efficiency of minerals

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Ep0568672b1 Flotation Separation Of Arsenopyrite From

On addition of a collector the pyrite is rendered floatable enabling froth flotation to achieve a concentrate rich in pyrite and tailings rich in arsenopyrite Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO3 ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite

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Flotation Behavior Of Sulfides On Mechanical Activation

Mechanical activation during grinding affects the flotability of pyrite arsenopyrite and galena It is established that the S Fe and As atoms at the surfaces of the

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Studies On Differential Flotation Characteristics Of

Investigation of the differential flotation characteristics between arsenopyrite and pyrite in a ore concentrate have been carried out on a laboratory Leeds flotation cell Experimental results indicate that some limited separation between arsenopyrite and pyrite is possible by differential flotation under the conditions of high pH and low pulp redox potential

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Pyrite Flotation Froth Flotation Sulphide Oxide

Pyrite Flotation 6 replies 3 The effectiveness of activator eg copper sulphate can be affected by the pulp chemistry such as pH and Eh Therefore it is important to monitor the pulp chemistry when you testing 4 Froth stability could also be important and can be influenced by the collector dosage and also the addition of activator

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Gold Pyrite Pyrrhotite And Arsenopyrite Recovery

Gold Pyrite Pyrrhotite and Arsenopyrite Recovery It is sometimes desired to recover arsenopyrite away from pyrite This is also an active area of flotation research and clearly the regulation of flotation pulp electrochemistry has a major bearing on the efficiency possible with this specific separation

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Leaching Of The Arsenopyritepyrite Flotation

arsenopyritepyrite flotation concentrate using metallic iron in a chloride medium The work focuses on the factors that enhance desulphurization and the recovery of precious metals namely gold and silver from the selected sulphide concentrate The application of iron in the

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Arsenopyrite Enrichment By Column Flotation

Column flotation arsenopyrite amines INTRODUCTION Pyrite concentrates sometimes contain considerable amounts of arsenic Since they are usually used for the production of sulphuric acid this is undesirable However gold is often associated with arsenopyrite

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Flotation Of Gold Associated With Pyrite

The depression of pyrite at high pH values can be overcome by the addition of more collector stronger collector and copper sulfate Pyrrhotite oats best in acid circuits The pH range for otation for gold sulde ores containing pyrite and arsenopyrite is Flotation of gold and goldbearing ores 327 generally between 7 and 9 Get price

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Process Mineralogy Of Roasted Pyrite And Arsenopyrite

Pyrite Hematite Calcium Sulfate Arsenopyrite Calcium Hydroxide These keywords were added by machine and not by the authors This process is experimental and the keywords may be updated as the learning algorithm improves

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Fundamental Studies On Pyrite Pyrrhotite

Pyritepyrrhotite and arsenopyrite are sulphide minerals which bear iron in their structures and are collected in flotation plants by thiocompounds for example xanthates dithiophosphates mercaptans mercaptobenzothiazolea Selective flotation among iron bearing minerals is always difficult to be present flotation stateofart

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The Separation Of Pyrite And Arsenopyrite By Flotation

The aim of the research programme is to investigate the potential of flotation for the separation of arsenopyrite and pyrite minerals The efficient separation of pyrite and arsenopyrite by a cheap process such as flotation has long been recognized as a desirable technological goal for

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Gold Pyrite Flotation

Flotation Separation of Arsenopyrite from Pyrite This invention relates to beneficiation of ores and more particularly to a process that preferentially renders arsenopyrite FeAsS unfloatable while leaving pyrite FeS 2 floatable

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Flotation Separation Of Arsenopyrite From Pyrite

Jul 26 1995 A froth flotation process for effecting separation of arsenopyrite mineral from pyrite mineral comprising conditioning at pH less than 8 and at a temperature of at least 30C an aqueous pulp containing particles of said arsenopyrite and pyrite minerals the conditioning being conducted with a sulfitic depressing agent providing HSO 3 ions added to said pulp in a quantity sufficient to impart a

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Pyrite Flotation Using

electrochemical behaviors of pyrite flotation using lime and sodium hydroxide NaOH as depressants and pointed out that the paraffin reaction resistance of pyrite surface decreases with increasing pH value which enhances the electron transport on pyrite surface and makes the surface easier to oxidize

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Flotation Separation Of Pyrite From Arsenopyrite In The

ABSTRACTFour oxidants NaClO KMnO4 K2Cr2O7 and H2O2 were used to promote the flotation separation of pyrite FeS2 from arsenopyrite FeAsS Ore flotation results indicate that H2O2 has

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Gowest Gold Ltd Selective Arsenopyritepyrite Flotation

Selective ArsenopyritePyrite Flotation Objectives Gold is almost entirely associated with the arsenopyrite therefore wanted to determine if arsenopyritepyrite are separable Reduce the tonnes of concentrate material to be processed or shipped Achieve

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Chemistry Of Pyrite Depression In Flotation

pyrite flotation a review The depression of pyrite flotation by cyanide may result from one or more of the following mechanisms 1 Cyanide may depress pyrite flotation by replacing xanthate ions on pyrite surface similar to hydroxyl ions Wark and Cox 1934 Prestidge et al 1993 Get price

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Pyrite Flotation Froth Flotation Sulphide Oxide

From my understanding you would like to get a high pyrite flotation recovery because the gold is locked in the pyrite And you are trying to analysing the effect of various factors on pyrite flotation I would suggest will be good to find out the optimum particle size firstly You mentioned 70um and 150 um

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Enhance Flotation Separation Of Arsenopyrite And Pyrite By

The flotation separation efficiency of pyrite and arsenopyrite can be enhanced by lowtemperature oxygen plasma pretreatment In this study the plasma modification mechanism on arsenopyrite and pyrite and the effect on the flotation performance of pyrite and arsenopyrite were investigated

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Technical Note The Selective Otation Of Arsenopyrite

xanthate and 250 mgl of MAA depressant These conditions resulted in an overall arsenopyrite recovery of 255 and a pyrite recovery of 621 a decrease in recovery of 630 and 75 respectively 2003 Published by Elsevier Ltd Keywords Flotation depressants Flotation reagents 1 Introduction Separation of pyrite and arsenopyrite by

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Arsenopyrite Pyrite Selective

A froth flotation process for effecting separation of arsenopyrite mineral from pyrite mineral comprising conditioning at pH less than about 8 and at a temperature Get Price Selective separation of arsenopyrite from an auriferous

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Flotation Using Pyrite

flotation copperlead separation priority flotation zinc and pyrite from the bulk flotation tailings was used The concentrate indexes of the grade of copper lead and zinc were 2087 4991 and 6010 respectively and the recoveries were 7559 9162 and 7407

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Selective Flotation Of Pyrite From Arsenopyrite By Low

The microflotation experiments results indicated that plasma pretreatment can achieve selective flotation of arsenopyrite from pyrite The XPS analysis results indicated that the oxidation degree of plasmamodification arsenopyrite surface is much higher than that of pyrite

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The Selective Flotation Of Arsenopyrite From Pyrite

The selective flotation of arsenopyrite from pyrite In mining environments sulfate and iron are two of the most common compounds and their presence can be beneficial for nitrification of Ascontaminated waters Galvanic interaction between grinding media and arsenopyrite and its effect on flotation

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