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pyrite flotation arsenopyrite

Gold Pyrite, Pyrrhotite and Arsenopyrite Recovery

In this author’s experience, arsenopyrite/pyrite systems have a tendency to be unique to a given ore body so that what works with one ore does not always work well with other ores. Copper sulfate is often used as an activator in the flotation of gold associated with iron sulfides.
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Flotation separation of pyrite from arsenopyrite in the

Four oxidants, NaClO, KMnO 4, K 2 Cr 2 O 7, and H 2 O 2, were used to promote the flotation separation of pyrite (FeS 2) from arsenopyrite (FeAsS).Ore flotation results indicate that H 2 O 2 has the best selectivity for the As-S separation. When H 2 O 2 is used, the As content in pyrite concentrate decreases from 2.27% without addition of H 2 O 2 to 1.11% with H 2 O 2 dosage of 900 g/t, and
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US5171428A Flotation separation of arsenopyrite from

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
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WO1993010904A1 Flotation separation of arsenopyrite from

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. On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings
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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. The micro-flotation experiments results indicated that plasma pre-treatment can achieve selective flotation of arsenopyrite from pyrite. The XPS analysis results indicated that the oxidation
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THE SEPARATION OF PYRITE AND ARSENOPYRITE BY

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
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Arsenopyrite an overview ScienceDirect Topics

Differential flotation of the iron sulfides (Poling and Beattie, 1984) pyrite, pyrrhotite, and arsenopyrite is a unique process in the gold industry. There is scope on some gold mines for differential flotation of pyrite from arsenopyrite, or vice versa (Draskic et al., 1984; Beattie et al., 1992; Kogan et al., 1986). This is due to the fact
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Flotation and depression control of arsenopyrite through

Oct 01, 2006· The flotation of arsenopyrite (FeAsS) is of particular interest. A high floatability is desirable for arsenopyrite that is auriferous so as to increase the recovery of gold. When the ore contains gold-poor pyrite and arsenopyrite, a pyrite–arsenopyrite bulk concentrate is recovered first.
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Leaching of the arsenopyrite/pyrite flotation concentrates

The arsenopyrite/pyrite flotation concentrate, mainly studied in the hydrochloric acid medium, decomposed through the non–oxidative stone dissolution reaction and the reductive decomposition reaction for the arsenopyrite and pyrite components, respectively. Desulphurization levels below 65% were achieved at pH
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ARSENOPYRITE ENRICHMENT BY COLUMN FLOTATION

ARSENOPYRITE ENRICHMENT BY COLUMN FLOTATION P. MAVROS, K.A. KYDROS and K.A. MATIS Department of Chemistry, Aristotle University, GR-540 06 Thessaloniki, Greece (Received 4 February 1993; accepted 2 July 1993) ABSTRACT Arsenic-rich, gold-bearing pyrite concentrates may be further enriched in arsenic W assist
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EP0568672B1 Flotation separation of arsenopyrite from

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. On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings
Details
Flotation separation of pyrite from arsenopyrite in the

Four oxidants, NaClO, KMnO 4, K 2 Cr 2 O 7, and H 2 O 2, were used to promote the flotation separation of pyrite (FeS 2) from arsenopyrite (FeAsS).Ore flotation results indicate that H 2 O 2 has the best selectivity for the As-S separation. When H 2 O 2 is used, the As content in pyrite concentrate decreases from 2.27% without addition of H 2 O 2 to 1.11% with H 2 O 2 dosage of 900 g/t, and
Details
Flotation separation of pyrite from arsenopyrite using

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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Technical Note The selective ﬂotation of arsenopyrite from

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.
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flotation separation arsenopyrite Hitlers Hollywood

MORE DETAILS: 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
Details
Leaching of the arsenopyrite/pyrite flotation concentrates

The arsenopyrite/pyrite flotation concentrate, mainly studied in the hydrochloric acid medium, decomposed through the non–oxidative stone dissolution reaction and the reductive decomposition reaction for the arsenopyrite and pyrite components, respectively. Desulphurization levels below 65% were achieved at pH
Details
Depression of Arsenopyrite Flotation and its Separation

Description. In this stone it is recommended that pyrite is to be separated as froth from arsenopyrite by selective depression of arsenopyrite in strong alkaline medium (1), by oxidation with chlorinated lime (II), by co-use of chlorinated lime with sodium carbonate (III), and by modification with `L’ reagent (know-how) without filtering to get rid of residual copper ions after Cu activation
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Flotation Behavior of Arsenopyrite and Pyrite, and Their

Such a different trend in flotation behavior of the mixed sample from the flotation behavior of the single minerals was because the surface oxidation reaction of arsenopyrite, which was more affected by E H among the mixed arsenopyrite and pyrite, generated ferric arsenate, a hydrophilic compound, on the surface of arsenopyrite, resulting in
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pyrite flotation cell hondenindemeent

US5171428A Flotation separation of arsenopyrite from 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.
Details
gold extraction from arsenopyrite」

Gold bearing pyrite and arsenopyrite close symbiosis is the common characteristic of this kind of ore, is part of the box is a fine stone disseminated state and arsenopyrite symbiosis. If done on this type of ore cyanide treatment, will consume more cyanide, recovery rate is low.
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Gold-Pyrite ores Danafloat

Where the gold is intimately associated with various sulphide minerals, especially iron sulphides which include pyrite, arsenopyrite and pyrrhotite, flotation recovery of the gold is dependent on recovery of the associated minerals. In this case gold follows the associated sulphide mineral recovery.
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Interaction of copper(II) ions with pyrite and its

X‐ray photoelectron spectroscopy (XPS) has been used to investigate the interaction of copper(II)‐containing aerated aqueous solution (pH 4–10) with pyrite (FeS 2) surfaces and its influence on subsequent ethyl xanthate adsorption from solution.Evidence is provided that Cu(II) ions can be adsorbed independent of pH, changing their oxidation state to Cu(I).
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New complexing agents to select auriferous pyrite and

Abstract. 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.
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Electronic and stone structures of pyrite and arsenopyrite

Chen, Jian-hua Liu, Jiong and Li, Yu-qiong 2018. Flotation separation of pyrite from arsenopyrite in the presence of oxidants.Separation Science and Technology, p.
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Crawler type Mobile Crushing Plant

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pyrite flotation arsenopyrite

Gold Pyrite, Pyrrhotite and Arsenopyrite Recovery

Flotation separation of pyrite from arsenopyrite in the

US5171428A Flotation separation of arsenopyrite from

WO1993010904A1 Flotation separation of arsenopyrite from

Selective Flotation of Pyrite from Arsenopyrite by Low

THE SEPARATION OF PYRITE AND ARSENOPYRITE BY

Arsenopyrite an overview ScienceDirect Topics

Flotation and depression control of arsenopyrite through

Leaching of the arsenopyrite/pyrite flotation concentrates

ARSENOPYRITE ENRICHMENT BY COLUMN FLOTATION

EP0568672B1 Flotation separation of arsenopyrite from

Flotation separation of pyrite from arsenopyrite in the

Flotation separation of pyrite from arsenopyrite using

Technical Note The selective ﬂotation of arsenopyrite from

flotation separation arsenopyrite Hitlers Hollywood

Leaching of the arsenopyrite/pyrite flotation concentrates

Depression of Arsenopyrite Flotation and its Separation

Flotation Behavior of Arsenopyrite and Pyrite, and Their

pyrite flotation cell hondenindemeent

gold extraction from arsenopyrite」

Gold-Pyrite ores Danafloat

Interaction of copper(II) ions with pyrite and its

New complexing agents to select auriferous pyrite and

Electronic and stone structures of pyrite and arsenopyrite

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