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usa flotation separation of arsenopyrite from

US5171428A Flotation separation of arsenopyrite

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...

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Flotation separation of arsenopyrite from pyrite

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 of at least about 30° C. and aqueous pulp containing particles of said arsenopyrite and pyrite minerals, said conditioning being conducted with a sulfitic depressing agent providing HSO 3 ions added to said pulp in a quantity sufficient to impart a selective depression property to said arsenopyrite

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EP0568672B1 Flotation separation of arsenopyrite

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...

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WO1993010904A1 Flotation separation of

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...

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Flotation separation of pyrite from arsenopyrite using

2020-6-20  Using copper sulfate is required in achieving flotation separation under weak alkaline. HA alone could depress the arsenopyrite flotation and show good selectivity towards pyrite. Interestingly, compared to the single depressant of sodium humate, higher pyrite and lower arsenopyrite recoveries were obtained when using the combination.

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The flotation separation of pyrite from arsenopyrite

2000-12-1  The flotation separation of arsenopyrite from pyrite was evaluated by two techniques, i.e. the Hallimond tube and bench flotation tests. The selective flotation of pyrite using the Hallimond tube was tested under a basic set of conditions.

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Selective separation of arsenopyrite from pyrite by

Effective methods for selective separation using flotation or flocculation of arsenopyrite from pyrite by biomodulation using Acidithiobacillus ferrooxidans are presented here.

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Selective separation of arsenopyrite from an

1993-5-1  In the present work, an auriferous bulk pyrite/arsenopyrite flotation concentrate from a commer- cial flotation plant was processed and arsenopyrite, in the presence of per- manganate (a strong oxidizing agent), was separated from pyrite.

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Remove Arsenopyrite from Galena

2016-3-27  The separation is particularly clean-cut and no middling is produced from the operation. Technique: To achieve the combined effects of skin flotation and rafting agglomerates it is necessary to have the right conditions. The requirements for successful table flotation

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Removal of arsenopyrite from complex sulfide

2016-4-1  In the ZnS flotation, the maximum separation achievable for ZnS using froth flotation has been shown to be a grade of 72.57% and a recovery of 95.43%. At this time, FeAsS removal of 87.8% (0.16% As) could be successfully accomplished under pH 11, and 800g/t Zn activator (CuSO4), 75g/t frother (AF65), 60g/t collector (AP211) and 600g/t As

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(PDF) Selective separation of arsenopyrite from an

V,A m s t e r d a m Selective separation of arsenopyrite from an auriferous pyrite concentrate by sulphonate flotation K.A. Kydros, K.A. Matis, I.N. Papadoyannis and P. Mavros Department of Chemtstry (Box 114), Artstotle Umverstty, GR-540 06, Thessalomkt, Greece (Received 7 Apnl 1992; accepted after revision 9 December 1992) ABSTRACT

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Separating arsenopyrite from pyrite Laboratory

2021-6-25  The slurry is heated at around 65 oC, one more time, it is important to perform tests (e.g. 40 to 70oC) to evaluate the effect of the temperature on the flotation selectivity between pyrite and arsenopyrite. The separation process could need the addition of a strong xanthate (e.g. PAX, 10 to 20 g/t) and a surface modifier to reactive the

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SEPARATION OF PYRITE FROM ARSENOPYRITE BY

2016-7-22  Figure 5.3. Flotation recovery of arsenopyrite with 8.4*10"'^ mol/1 S7 and 2 mg/1 F2B 100 Figure 5.4. Flotation of arsenopyrite using 1.01*10-5 mol/1 F1 101 Figure 5.5. The effect of preconditioning and using Ca(0H)2 as pH regulator on the recovery of arsenopyrite around pH 10 101 Figure 5.6. Time dependency of F1 adsorption onto arsenopyrite at pH

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flotation separation arsenopyrite Hitlers Hollywood

2021-7-6  Separation of pyrite from arsenopyrite by flotation CORE. A successful separation was seen to be possibleud employing Fl and by floating pyrite This was proven by using a mixture ofud equal amounts of pyrite and arsenopyrite and selectively floating pyriteud Bench and column flotation tests were carried out in order to. More Detail.

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THE SEPARATION OF PYRITE AND ARSENOPYRITE BY

1991-1-1  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 ores containing both minerals. A series of novel collectors

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Remove Arsenopyrite from Galena

2016-3-27  The separation is particularly clean-cut and no middling is produced from the operation. Technique: To achieve the combined effects of skin flotation and rafting agglomerates it is necessary to have the right conditions. The requirements for successful table flotation

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Effect of dextrin on flotation separation and surface

2020-11-27  At present, the most commonly used technology to separate copper-bearing ore from other ores is froth flotation (Liu et al. 2017), and separation of different ores is a common problem in flotation process.However, in the flotation separation of chalcopyrite and arsenopyrite, it is difficult to separate chalcopyrite and arsenopyrite because of the similar floatability of chalcopyrite and

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Enhance flotation separation of arsenopyrite and pyrite by

2019-6-1  Abstract The flotation separation efficiency of pyrite and arsenopyrite can be enhanced by low-temperature oxygen plasma pretreatment. In this study, the plasma modification mechanism on arsenopyrite and pyrite and the effect on the flotation

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Removal of arsenopyrite from complex sulfide

In the ZnS flotation, the maximum separation achievable for ZnS using froth flotation has been shown to be a grade of 72.57% and a recovery of 95.43%. At this time, FeAsS removal of 87.8% (0.16% As) could be successfully accomplished under pH 11, and 800g/t Zn activator (CuSO4), 75g/t frother (AF65), 60g/t collector (AP211) and 600g/t As

get price

A Brief Review of Auriferous Sulphide Flotation

2020-8-21  flotation response. Separation of gold predominated arsenopyrite minerals from less economical pyrite phase maximises downstream unit feed and improves financial performance of the operation. This paper briefly reviews attempts made thus far in exploiting subtle differences between pyrite and arsenopyrite for separation.

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The Selective Flotation of Arsenopyrite from Pyrite

2016-11-28  Keywords: Flotation depressants; Flotation reagents 1. Introduction Separation of pyrite and arsenopyrite by flotation using xanthates presents difficulties due to the fact that xanthates adsorb onto both these minerals as dixanth-ogen, which is not cation selective. Therefore, a num-ber of separation techniques have been employed by a

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THE SEPARATION OF PYRITE AND ARSENOPYRITE BY

1991-1-1  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 ores containing both minerals. A series of novel collectors

get price

Enhance flotation separation of arsenopyrite and

The flotation separation efficiency of pyrite and arsenopyrite can be enhanced by low-temperature 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. The results showed that plasma modification preferentially starts at the edges and rough areas of the

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Selective separation of arsenopyrite from pyrite by

Effective methods for selective separation using flotation or flocculation of arsenopyrite from pyrite by biomodulation using Acidithiobacillus ferrooxidans are presented here. Adhesion of the bacterium to the surface of arsenopyrite was very slow compared to that to pyrite, resulting in a difference in surface modification of the minerals subsequent to interaction with cells.

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Separating arsenopyrite from pyrite Laboratory

2021-6-25  The slurry is heated at around 65 oC, one more time, it is important to perform tests (e.g. 40 to 70oC) to evaluate the effect of the temperature on the flotation selectivity between pyrite and arsenopyrite. The separation process could need the addition of a strong xanthate (e.g. PAX, 10 to 20 g/t) and a surface modifier to reactive the

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Separation of pyrite-arsenopyrite products by

Separation of pyrite-arsenopyrite products by flotation using low-molecular-weight organic reagents. V. A. Chanturiya, T. V. Nedosekina & A. A. Fedorov Journal of Mining Science volume 34, pages 453–458 (1998)Cite this article

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Selective separation of arsenopyrite from pyrite by

2004-8-1  Effective methods for selective separation using flotation or flocculation of arsenopyrite from pyrite by biomodulation using Acidithiobacillus ferrooxidans are presented here. Adhesion of the bacterium to the surface of arsenopyrite was very slow compared to that to pyrite, resulting in a difference in surface modification of the minerals

get price

A Brief Review of Auriferous Sulphide Flotation

2020-8-21  flotation response. Separation of gold predominated arsenopyrite minerals from less economical pyrite phase maximises downstream unit feed and improves financial performance of the operation. This paper briefly reviews attempts made thus far in exploiting subtle differences between pyrite and arsenopyrite for separation.

get price

Flotation Behavior of Arsenopyrite and Pyrite, and

To examine the flotation behavior of each mineral by pH change, flotation was carried out at pH 4 and pH 10. The test results showed arsenopyrite had higher floatability at pH 4, regardless of the potassium ethyl xanthate (PEX) concentration. This is because xanthate ion was oxidized to be stable dixanthogen, which was well adsorbed onto

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李广明(暨南大学深圳旅游学院执行院长)_百度百科

2006-7-30  24. Li Guangming, Depression of arsenopyrite flotation and its separation from pyrite. Industrie Mines ET Carrieres, 1994, France. 李广明 专著 编辑 语音 1、李广明著,区域产业生态网络的经济研究,23万字,广州:暨南大学出版社,2013-6

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