Minerals Free Full-Text Selective Flotation of Pyrite

Pyrite (FeS 2) is the main gangue associated with valuable sulfide ores, such as galena, chalcopyrite, sphalerite, and others [ 1, 2, 3, 4, 5 ]. Pyrite is usually depressed during

Pyrite flotation from gold leach residues ScienceDirect

Pyrite flotation from gold leach residues. Author links open overlay panel G. Hodgkinson § R.F. Sandenberght † C.J. Hunter § J.R. De Wet †

The Flotation of Pyrite using Xanthate Collectors

2020-12-8  The flotation properties of pyrite were found to be significantly influenced by va~iations in the pH. In acidic solutions the pyrite floatability is very high, and recoveries of 95% could be achieved using only a frother. A sharp decrease in floatability was observed in alkaline

The depression of pyrite in selective flotation by

Pyrite is a gangue mineral widely associated with valuable minerals. It is problematic to deal with in differential flotation because it easily reports to flotation concentrates. Pyrite may float due to natural or self-induced hydrophobicity or collector-induced hydrophobicity. Its flotation can also be enhanced by the activation of copper or lead

Studies on the selective flotation of pyrite from fine

2021-5-1  As seen in Fig. 10 (a) and (b), at pH 9 where sulfide flotation normally performed, the positively charged serpentine can form slimes coating on pyrite surface due to the electrostatic attraction, which caused the deterioration of pyrite flotation. However, when CA was added, CA chemically adsorbed on serpentine and accelerated the dissolution of the magnesium cations on serpentine surface, which converted serpentine

Pyrite recovery mechanisms in coal flotation

In most operating coal-cleaning plants, a significant amount of pyrite is recovered in the froth during flotation of high-sulfur coal. This pyrite rec

Hydrophobic Agglomeration of Fine Pyrite Particles

Flotation is the primary technology for selective separation of fine pyrite. The flotation efficiency is related to particle size, and the flotation response of pyrite falls substantially when the particles are present in a fine size range . This is due to the flotation of fine particles that can cause problems like high reagent consumption, lower collision and adhesion probability between particles and air bubbles, non-selective

Evaluation of flotation for purification of pyrite for use

Both the HF-leached and the flotation-treated pyrite were leached with HCI (1:1 v/v) to remove acid-soluble impurities. The flotation-purified pyrite concentrates were formulated into catholytes; their electrochemical performance was evaluated in both single cells and 5-cell batteries for comparison to data generated under the same discharge conditions for catholytes formulated with HF/HCI purified pyrite.

Flotation Behavior of Arsenopyrite and Pyrite, and

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

Leaching of the arsenopyrite/pyrite flotation concentrates

2009-10-15  2009-10-15  residues. The arsenopyrite/pyrite flotation concentrate, mainly studied in the hydrochloric acid medium, decomposed through the non–oxidative chemical dissolution reaction and the reductive decomposition reaction for the arsenopyrite and pyrite components, respectively. Desulphurization levels below 65% were achieved at pH

The Flotation of Pyrite using Xanthate Collectors

2020-12-8  The flotation properties of pyrite were found to be significantly influenced by va~iations in the pH. In acidic solutions the pyrite floatability is very high, and recoveries of 95% could be achieved using only a frother. A sharp decrease in floatability was observed in alkaline

Quantum-mechanics of pyrite flotation, Journal of

2014-3-1  Quantum-mechanics of pyrite flotation Quantum-mechanics of pyrite flotation Solozhenkin, P.; Kondrat’ev, S.; Angelova, E. 2014-03-01 00:00:00 The authors have carried out molecular modeling of clusters of simple structure and ring structure pyrite. It is suggested to analyze bonding of a collecting agent and cluster atoms using the collector capacity forecasting index.

Coal-pyrite flotation : a modified technique using

Coal-pyrite flotation : a modified technique using concentrated second-stage pulp / by Kenneth J. Miller.

Pyrite Flotation Tailings Scientific.Net

Journal of Biomimetics, Biomaterials and Biomedical Engineering Materials Science. Defect and Diffusion Forum

Interfacial Electrochemistry of Pyrite Oxidation and

Now on home page. ads; Enable full ADS view . Abstract Citations (4) References Export Citation NASA/ADS. Interfacial Electrochemistry of Pyrite Oxidation and Flotation Wang, Xiang-Huai; Abstract. Publication: Journal of Colloid and Interface Science. Pub Date: May 1995 DOI: 10.1006/jcis.1995.1198

Flotation Archives — Page 2 of 35 911 Metallurgist

2021-6-18  How to Separate Pyrite from Coal by Flotation In its effort to find ways of reducing the pyritic sulfur content of fine-size coals, the U.S. Bureau of Mines funded by the Environmental Protection Agency has been conducting research aimed at improving or modifying the froth flotation process so that better pyrite rejection is possible.

Flotation Archives — Page 9 of 35 911 Metallurgist

2021-6-18  The Effect of Sodium Silicate in Nonmetallic Flotation Systems. The zero-points-of-charge of apatite, calcite, and fluorite are pH 6.4, 10.8, and 10.0, respectively. Scheelite is negatively charged above at least pH 3. Flotation responses of these minerals in the presence of potassium oleate and sodium silicate are presented and compared with

黄根-副教授-中国矿业大学(北京)化学与环境工程学院

2019-11-11  ( 4 ) Gen Huang*, Yi-jun Cao, Zhong-cai Gao, Pyrite Flotation by Using Cyclone Static Micro-bubble Flotation Column, XXVI International Mineral Processing Congress, Page 2141-2146, New Delhi, 2012.09.23-28. ( 5 )黄根 *, 徐宏祥, 章述广. 浮选机-浮选柱,

Synergistic effects between Thiol collectors used in the

2020-12-8  The flotation of pyrite using mixtures of dithiocarbamates and other thiol collectors. Miner. Engng., vol. 7, nos 5-6, pp 681-690. Bradshaw, D.J., Cruywagen, J.J. and 0' Connor, C.T., 1995. Measurement of the heat of adsorption and surface reactions of cyclohexyl dithiocarbamate, potassium n-butyl xanthate and a thiol

The depression of quartz in sulphide flotation

2020-10-13  1. --INTRODUCTION. -The flotation of sulphide minerals from siliceous and calcareous gangue ainerals always g1Yes a concentr.ate that is eontaminated to a greater or

Quantum-mechanics of pyrite flotation, Journal of

2014-3-1  Quantum-mechanics of pyrite flotation Quantum-mechanics of pyrite flotation Solozhenkin, P.; Kondrat’ev, S.; Angelova, E. 2014-03-01 00:00:00 The authors have carried out molecular modeling of clusters of simple structure and ring structure pyrite. It is suggested to analyze bonding of a collecting agent and cluster atoms using the collector capacity forecasting index.

Coal-pyrite flotation : a modified technique using

Coal-pyrite flotation : a modified technique using concentrated second-stage pulp / by Kenneth J. Miller.

Modification of Pyrite and Sphalerite Flotation by

2006-8-15  (1994). Modification of Pyrite and Sphalerite Flotation by Dextrin. Separation Science and Technology: Vol. 29, No. 17, pp. 2263-2275.

Coal-pyrite flotation in concentrated pulp (1977

Coal-pyrite flotation in concentrated pulp by Kenneth J. Miller, 1977, Dept. of the Interior, Bureau of Mines edition, in English

PYRITE ROASTING, AN ALTERNATIVE TO SULPHUR

2009-10-15  Page 101 PYRITE ROASTING, AN ALTERNATIVE TO SULPHUR BURNING M Runkel and P Sturm Outotec GmbH, Oberursel GERMANY The technology for the roasting of fine flotation pyrite concentrates is a stationary fluid bed for small throughputs or a circulating fluid bed for high throuphputs up to approx.

Flotation Behavior of Arsenopyrite and Pyrite, and

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

"Depression of Pyrite in Polymetallic Sulfide Flotation

2020-1-1  Chitosan-grafted-polyacrylamide (Chi-g-PAM) was tested as a potential depressant of pyrite in the bulk flotation of galena from a complex sulfide ore containing galena, chalcopyrite, sphalerite, and pyrite. Laboratory scale froth flotation tests were carried out in the presence/absence of Chi-g-PAM, sodium cyanide (industrially used pyrite depressant), chitosan, and polyacrylamide (PAM) at 50

Solution Chemistry of Sodium Silicate and

2012-9-6  The solution chemistry of sodium silicate and implications for pyrite flotation have been studied. In addition to flotation and sedimentation tests, electrophoresis, inductively coupled plasma (ICP) tests, and X-ray photoelectron spectroscopy (XPS) have been used. The flotation and sedimentation results show that lizardite causes problems in the flotation of pyrite by adhering to the pyrite

The depression of quartz in sulphide flotation

2020-10-13  1. --INTRODUCTION. -The flotation of sulphide minerals from siliceous and calcareous gangue ainerals always g1Yes a concentr.ate that is eontaminated to a greater or

Dextrin as a Regulator for the Selective Flotation of

2013-7-18  Results are presented on the flotation of chalcopyrite from a chalcopyrite-galena bulk concentrate high in pyrite using dextrin as a depressant for galena and pyrite at pH 8. On a étudié l'adsorption des ions tant de dextrine que de xanthate aux interfaces pyrite/solution aqueuse et galène/solution aqueuse par des essais d'adsorption en lot.