Selective Separation Between Pyrite And Arsenopyrite

Selective separation of arsenopyrite from pyrite by ...

2004-8-15 · Separation or selective depression of pyrite from arsenopyrite becomes imperative in order to achieve economical extraction of gold. In addition, selective removal of arsenopyrite from pyrite tailings becomes a necessity prior to its disposal to minimize the emission of arsenic into the environment.

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.

Selective separation of pyrite from chalcopyrite and ...

2005-1-6 · Separation of pyrite from chalcopyrite is conventionally achieved by selective depression of pyrite using depressants like cyanide under alkaline conditions. On the other hand, separation of pyrite from arsenopyrite has been a problem due to their similar flotation behaviour with sulphidic collectors.

The selective flotation of arsenopyrite from pyrite ...

2003-11-1 · Separation of pyrite and arsenopyrite by flotation using xanthates presents difficulties due to the fact that xanthates adsorb onto both these minerals as dixanthogen, which is not cation selective. Therefore, a number of separation techniques have been employed by a number of authors to produce separate arsenopyrite and pyrite streams ( Abeidu ...

Selective separation of pyrite from chalcopyrite and ...

This paper discusses the selective depression of pyrite from chalcopyrite and arsenopyrite by biomodulation using Acidithiobacillus ferrooxidans under natural conditions of pH. The effect of bacteria–mineral interaction on the surface charge of mineral and bacterial cell was studied by microelectrophoresis.

Selective separation of pyrite from chalcopyrite and ...

Selective separation of pyrite from chalcopyrite and arsenopyrite by biomodulation using Acidithiobacillus ferrooxidans January 2005 International Journal of Mineral Processing 75(1-2):113-122

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 ...

The selective flotation of arsenopyrite from pyrite ...

Separation of arsenopyrite from pyrite is usually achieved by selective depression of arsenopyrite using depressants like cyanide or oxidizing agents (e.g., hydrogen peroxide and magnesia-ammonia ...

Selective separation of arsenopyrite from an auriferous ...

2006-1-30 · 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

(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 ...

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.

(PDF) Selective separation of arsenopyrite from an ...

Selective separation of arsenopyrite from an auriferous pyrite concentrate by sulphonate flotation May 1993 International Journal of Mineral Processing 38(1-2):141-151

Selective separation of pyrite from chalcopyrite and ...

Selective separation of pyrite from chalcopyrite and arsenopyrite by biomodulation using Acidithiobacillus ferrooxidans January 2005 International Journal of Mineral Processing 75(1-2):113-122

The selective flotation of arsenopyrite from pyrite ...

Separation of arsenopyrite from pyrite is usually achieved by selective depression of arsenopyrite using depressants like cyanide or oxidizing agents (e.g., hydrogen peroxide and magnesia-ammonia ...

THE SEPARATION OF PYRITE AND ARSENOPYRITE BY

1991-1-1 · 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, based on a different chemistry from conventional xanthates and similar surfactants, has been developed, which might lead to the ...

Selective separation of pyrite and chalcopyrite by ...

2004-9-1 · Selective separation of arsenopyrite from pyrite by biomodulation in the presence of Acidithiobacillus ferrooxidans. Chandraprabha MN, Natarajan KA, Somasundaran P. J Colloid Interface Sci, 276(2):323-332, 01 Aug 2004 Cited by: 1 article | PMID: 15271559

(PDF) Selective Flotation of Pyrite from Arsenopyrite by ...

2018-12-4 · Relationship between of flotation recovery of arsenopyrite (a) and pyrite (b) and separation efficiency ( c ) and pre-treatment time and temperature ( d ) in native pH with 1 × 10 − 4 M SBX as ...

The Selective Flotation of Arsenopyrite from Pyrite

2016-11-28 · The selective flotation of arsenopyrite from pyrite B. Tapley, D. Yan * WA School of Mines, Curtin University, LB 22 Kalgoorlie, WA 6433, Australia Received 8 May 2003; accepted 7 July 2003 Abstract Flotation tests were conducted to compare the arsenopyrite depressing effect of MAA with pH control, potassium permanganate and pre-aeration.

New complexing agents to select auriferous pyrite and ...

2011-5-22 · The authors propose the process for selective flotation of auriferous pyrite and arsenopyrite, where the combination of xanthate, 2-hydroxylpropyl ester of diethyldithiocarbamate acid (HPEDEDCA) and oak-bark extract (OBE) is used to produce pyrite concentrate recovered into the froth product. The process provides the selective recovery of valuables into heteronymous concentrates, thus reducing ...

A Brief Review of Auriferous Sulphide Flotation ...

2020-8-21 · 3 Separation of Pyrite and Arsenopyrite 3.1 Pulp Chemistry Control Pulp pH is one of the most significant parameters in deciding the flotability and selectivity of sulphides (López Valdivieso et al., 2006). For both pyrite and arsenopyrite, high flotation recoveries are achieved under acidic pH conditions proposed to be as a result

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.

Selective separation of arsenopyrite from pyrite by ...

Selective separation of arsenopyrite from pyrite by biomodulation in the presence of Acidithiobacillus ferrooxidans

Selective separation of pyrite and chalcopyrite by ...

2004-9-1 · Selective separation of arsenopyrite from pyrite by biomodulation in the presence of Acidithiobacillus ferrooxidans. Chandraprabha MN, Natarajan KA, Somasundaran P. J Colloid Interface Sci, 276(2):323-332, 01 Aug 2004 Cited by: 1 article | PMID: 15271559

Separating arsenopyrite from pyrite - Laboratory Testing ...

2021-8-12 · Once the pyrite-arsenopyrite concentrate is obtained by flotation, it is necessary to increase the pH from 10 to 12. Lime can be used to regulate the pH. ... 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 ...

FUNDAMENTAL STUDIES ON PYRITE, PYRRHOTITE AND

2009-9-17 · Selectivity between arsenopyrite and pyrrhotite is difficult, but the possibility of separation between pyrite and the other sulphides deserves further investigation. Ph. D. - Professor and Head Dept of Mining Eng. / UFMG-BRAZIL M.Sc. - Former graduate student / UFMG, presently in PANAMA M.Sc. - Associate Professor Dept. of Mining Eng / UFMG-BRAZIL

The Selective Flotation of Arsenopyrite from Pyrite

2016-11-28 · The selective flotation of arsenopyrite from pyrite B. Tapley, D. Yan * WA School of Mines, Curtin University, LB 22 Kalgoorlie, WA 6433, Australia Received 8 May 2003; accepted 7 July 2003 Abstract Flotation tests were conducted to compare the arsenopyrite depressing effect of MAA with pH control, potassium permanganate and pre-aeration.

British Library EThOS: Separation of pyrite from ...

The effect of collector concentration was monitored and other parameters were adjusted for an optimum separation. Observations showed that a selective flotation of pyrite from arsenopyrite could be possible. Adsorption characteristics of Fl on pyrite and arsenopyrite were studied as a function of collector concentration, pH and time.

Flotation separation of arsenopyrite from pyrite - BEATTIE ...

1991-11-27 · 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. On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings ...

Selective separation of pyrite and chalcopyrite by ...

Selective separation of pyrite from other associated ferrous sulphides at acidic and neutral pH has been a challenging problem. This paper discusses the utility of Acidithiobacillus ferrooxidans for the selective flotation of chalcopyrite from pyrite. Consequent to interaction with bacterial cells, pyrite remained depressed even in the presence of potassium isopropyl xanthate collector while ...

Pyrite−Arsenopyrite Galvanic Interaction and ...

2021-3-12 · Comparative voltammetric studies were performed between high purity pyrite mineral (98.86%) and arsenopyrite mineral (content of 85.96% arsenopyrite, FeAsS; 11.84% pyrite, FeS2; 0.98% galena, PbS; 0.06% chalcopyrite, CuFeS2) in order to analyze the galvanic effect on the electrochemical reactivity of two different mineralogical phases when these are associated in the same mineral, using

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