The surface and solution chemistry of pyrite flotation with xanthate in the presence of iron ions

Jiang, Chengliang; Wang, X.H.; Parekh, B.K.; Leonard, J.W.

doi:10.1016/s0927-7757(97)00250-1

Cited by 54 publications

(22 citation statements)

References 9 publications

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“…Pyrite (FeS 2 ), a common constituent of base metal ore deposits, is widely associated with other base metal sulfide minerals (e.g., chalcopyrite) and precious minerals (e.g., gold) [1][2][3][4][5]. It is usually perceived as a gangue mineral and removed from valuable minerals by flotation which exploits the difference in surface properties [6,7].…”

Section: Introductionmentioning

confidence: 99%

Electrochemistry aspects of pyrite in the presence of potassium amyl xanthate and a lignosulfonate-based biopolymer depressant

Peng

Lauten³

2015

Electrochimica Acta

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Section: Introductionmentioning

confidence: 99%

Electrochemistry aspects of pyrite in the presence of potassium amyl xanthate and a lignosulfonate-based biopolymer depressant

Peng

Lauten³

2015

Electrochimica Acta

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“…These works revealed out that pyrite displays variable behaviour in flotation circuits. This behavior mainly related with origin and mineralogical composition of ore. Liberation size, electrochemical behavior of minerals constituting ore, the trace and minor element content of the mineral, texture, application variables belonging to flotation circuits determine the pyrite recovery in froth [1,4,6,7]. Pyrite is a chemically active mineral and can easily be oxidized.…”

Section: Introductionmentioning

confidence: 99%

“…It reverses the positive surface charge of pyrite in acid pH pulps, and gets it more negative at neutral and alkaline pHs with increasing the xanthate concentration [4,[8][9][10]. There DA VID PUBLISHING D is a general consensus that xanthate makes pyrite hydrophobic adsorbing as dixanthogen and, meanwhile, the loss of positive charge associated with surface ferric hydroxide on the surface resulting in the negative increase in the zeta potential of pyrite.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Pyrite in a Tailings Dam by Flotation

Ceylan¹,

Bulut²,

Göktepe³

2014

JMSE-B

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Abstract:Pyrite is presented as a gangue mineral in most of complex sulphide ores and most of time it is removed as a tailing. However, beneficiation of pyrite from tailings could be important because of its economical value and the environmental concern. This paper presents a research for the enrichment of pyrite from copper plant tailings, Siirt-Madenköy/Turkey, by flotation. Siirt-Madenköy copper mine is operated by Park Electric Production Mining and Industry since 2005. In order to obtain the pyrite from Siirt-Madenköy copper plant tailings, laboratory test work has to be done to determine the type of reagents, the flowsheet and the size of plant. The objective of the company is to develop a pyrite flotation circuit for concentration of pyrite from tailing dam to obtain 750,000 tons/year pyrite concentrate. There are about 4 million tons tailings that containing pyrite in the tailings dam. Experiments were carried out with three different types of tailings from the plant and the pyrite concentrate with 46%Fe and 90% recovery has been obtained. Therefore, this study shows that high grade pyrite with high recovery can be recovered from the tailings.

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“…From the ToF-SIMS graphs, it is clear that there is relatively low collector attachment on the oxidised pyrite concentrate compared to the pristine concentrate attributing to low gold recoveries. This is because iron oxidation products on the oxidised concentrate inhibited xanthate adsorption on pyrite surface (Jiang et al, 1998). However, the reasonably high collector attachment on the oxidised pyrite concentrate compared to the oxidised tail confirms the relatively moderate hydrophobic nature of the oxidised pyrite phase.…”

Section: Collector and Copper Ion Attachment On The Oxidised Pyrite Pmentioning

confidence: 97%

Differential oxidation of iron sulfides to modify the Au:S ratio in the flotation concentrate product at Lihir

John¹

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Sulfide associated refractory gold ores hold a majority of the gold within the pyrite, which has several forms. The high proportion of the gold atomically dispersed in the pyrite has been confirmed by various mineralogy techniques such as laser ablation analysis, optical microscopy, scanning electron microscopy and secondary ion mass spectrometry. Different types of pyrite exist within a refractory ore body and certain types possess a relative abundance of gold compared to other forms.The low gold pyrite influences the rate at which the concentrate can be processed by any particular route. If the different types of pyrite could be separated by flotation, then the gold grade of the final concentrate can be improved and the invisible gold could be recovered by downstream processing. This separation of low gold pyrite from the gold-rich pyrite would increase the gold:sulfur ratio (Au:S ratio) to the autoclave feed, thereby maximising the autoclave throughput and gold production per tonne.Different methods of extraction such as chemical oxidation, thermal oxidation and biological oxidation liberate gold from refractory ores. However, such oxidation methods have not been reported yet to be successful to allow separation of the low gold pyrite from the gold-rich pyrite and modify the Au:S ratio of a pyrite concentrate. This project is an attempt to develop a hydrometallurgical framework to modify the flotation response of gold-rich pyrite and low gold pyrite so that the Au:S ratio of the final flotation concentrate can be upgraded.ii

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The surface and solution chemistry of pyrite flotation with xanthate in the presence of iron ions

Cited by 54 publications

References 9 publications

Electrochemistry aspects of pyrite in the presence of potassium amyl xanthate and a lignosulfonate-based biopolymer depressant

Electrochemistry aspects of pyrite in the presence of potassium amyl xanthate and a lignosulfonate-based biopolymer depressant

Evaluation of Pyrite in a Tailings Dam by Flotation

Differential oxidation of iron sulfides to modify the Au:S ratio in the flotation concentrate product at Lihir

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