pyrite flotation chalcopyrite
Sodium silicate was somewhat effective in causing a differential or selective flotation of copper, as chalcopyrite from pyrite by keeping pyrite from floating. Sodium hydroxide and sodium sulfide gave, in most cases, a distinct separation of sphalerite from chalcopyrite; i.e., a high copper and low zinc by suppressing the flotation of sphalerite.
The flotation of chalcocite, bornite, chalcopyrite, and pyrite has been studied in a microflotation cell in which the potential of a bed of the mineral particles could be controlled electromechanically. The ethylxanthate-induced flotation of each mineral is markedly dependent on electrochemical ...
interactions occurring between pyrite and chalcopyrite surfaces during grinding and conditioning, prior to flotation, lead to chalcopyrite oxidation and copper activation of the former. This also results in the formation of hydrophilic surface coatings of iron hydroxide species that inhibit chalcopyrite flotation.
Metallurgical ContentThe Problem with separating Copper from Zinc by flotationThe Copper Zinc Process FlowsheetCRUSHINGROD MILLING The Problem with separating Copper from Zinc by flotation The treatment of heavy sulphide ores of copper containing zinc and pyrite is often extremely difficult particularly if soluble copper and sulphates are present.
Metallurgical ContentThe Problem with copper-pyrite oresThe copper pyrite separation Process FlowsheetCrushing circuit of a copper pyrite oreCopper pyrite ore Grinding circuit Flotation process of Copper-Pyrite mineralsSampling The Problem with copper-pyrite ores This flowsheet, is designed for the treatment of a copper-iron sulfide ore containing appreciable values in gold.
flotation experiments, zeta potential measurements and infrared spectrum analysis. Flotation test results indicate that DLZ is the selective collector of chalcopyrite. Especially, the recovery of chalcopyrite is higher than 90% in neutral and weak alkaline systems, while the recovery of pyrite …
Apr 17, 2010· The interaction mechanism of collector DLZ in the flotation process of chalcopyrite and pyrite was investigated through flotation experiments, zeta potential measurements and infrared spectrum analysis. Flotation test results indicate that DLZ is the selective collector of chalcopyrite.
Depression of pyrite in porphyry copper flotation ... Limited depression of pyrite with lime Flotation tests on plant rougher con (60% Cp, 18% Py) (Ore 1) Pyrite is Cu and ... Chalcopyrite Recovery [%] Pyrite re-activates if further SIPX is added after Na 2SO 3. Conclusions (Case Study)
Jan 15, 2019· However, the separation of pyrite from chalcopyrite in flotation is difficult due to the galvanic interaction between chalcopyrite and pyrite which facilitates the oxidation and dissolution of chalcopyrite and subsequent copper activation on pyrite surface (Finkelstein, 1997, Peng et al., 2003).
Investigation of Flotation Parameters for Copper Recovery from Enargite and Chalcopyrite Mixed Ore Kazutoshi Haga+, William Tongamp and Atsushi Shibayama Faculty of Engineering and Resource Science, Akita University, Akita 010-8502, Japan
Chemisorption of sulphide ions on pyrite probably occurs similarly to sulphite4 ion on pyrite. Flotation of Chalcopyrite (CuFeS 2) Complete flotation of chalcopyrite is possible from pH 3 to pH 12 with ethyl xanthate. Both electrochemical oxidation of xanthate to dixanthogen as well as chemisorption of
Abstract. This study explores the flotation behavior of chalcopyrite in the presence of different concentrations of sodium sulfide (Na 2 S·9H 2 O) at pH 12 under controlled potential conditions. It was observed that the flotation of chalcopyrite is not depressed completely when the pulp potential is low, even at high concentrations of sodium sulfide, i.e., 10 −1 –10 −2 mol/L.
The effects of regrinding conditions on chalcopyrite flotation and its separation from pyrite were studied. It was found that the stainless steel grinding media, which produced an oxidising environment, was more beneficial for the separation of chalcopyrite from pyrite after regrinding.
The Pyrite Depression in a Copper Only Flotation circuit is simple enough. If your froth flotation system only tries to recover chalcopyrite-copper, you need to bring the plant's pH up to the other side (right side) of the PYRITE curve. The more flotation collector you have on, the higher you will need to increase that pH for effective pyrite depression.
In this respect, roles of different flotation agents, pH and electrochemical conditions on the hydrophobicity and floatability of pyrite were discussed. Discover the world's research 15+ million ...
ii Abstract This study was carried out to investigate the flotation and leaching behaviour of bornite and chalcopyrite when they are together as principal sulphide minerals.
Download Citation on ResearchGate | Flotation of chalcopyrite and pyrite in sea water | Water is a necessary process medium in mineral processing. For the operations where fresh water is not ...
In this study, the differences between the separation of chalcopyrite and chalcocite from pyrite in cleaner flotation after regrinding were investigated. In the rougher flotation prior to regrinding, high chalcopyrite and chalcocite recovery were obtained in conjunction with high pyrite flotation recovery due to the activation of pyrite by ...
Key words which were used in the broadly defined search were the following: flotation, ore treatment, chalcocite, chalcopyrite, sphalerite, galena, pyrite, and depress. A total of 38 articles relevant to the topic of pyrite depression were identified in the computer search.
maximum pyrite (1), Pyrrhotite (2) and chalcopyrite (3) flotation. Floatability of copper and iron sulphides in the absence of lime can be explained by taking into account the composition of natural sulphides oxidation products (Abramov 1978). Early, it has been found that for iron
Sep 21, 2019· Separating chalcopyrite, an important copper-containing ore, from pyrite is an important mineral-processing objective. Herein, we report the synthesis of S-hydroxyethyl-O-isobutyl xanthate (HEIBX), a novel surfactant bearing both hydroxyl and thione groups, through the attachment of a hydroxyethyl group to sodium isobutyl xanthate (SIBX), and its first application as a flotation collector …
Prabhakar, S. and Khangaonkar, P.R., 1982.Flotation and adsorption studies of chalco-pyrite with cupferron. Int. J. Miner. Process., 9: 87-95. Flotation tests were conducted in a Hallimond tube on chalcopyrite, with a collector system of cupferron and fuel oil. The reagent concentration, pH and conditioning time were studied as variables.
Separation Turn: chalcopyrite first, pyrite second. 1.2 Bulk Flotation: This method is suitable for the combination of chalcopyrite and pyrite in the ore. The size of the coalition of chalcopyrite and pyrite is some coarse. While the particle size of the monomer is fine, the qualified tailing is separated by bulk flotation, then the mixed ...
Request PDF on ResearchGate | Heterocoagulation of chalcopyrite and pyrite minerals in flotation separation | Heterocoagulation between various fine mineral particles contained within a mineral ...
Therefore, the separation of chalcopyrite from pyrite has always been a challenge in mineral processing field. The screen or design of more selective depressants and collectors is the key to efficient separation. Pyrite flotation depressants can be divided into inorganic and organic ones.
The flotation tests of single mineral show that LSC can depress the flotation of pyrite in a certain pH range, but it has little effect on chalcopyrite flotation.
of a gold-containing pyrite concentrate). The copper concentrate grades achieved from the flotation circuit at Telfer have typically fallen well short of the theoretical achievable grades despite the majority of copper being hosted in high copper bearing minerals: chalcopyrite, chalcocite, bornite and others.
Developing a Bulk Circuit Suitable for Chalcopyrite-Pyrite Ores with Elevated Pyrite Content in Copper-Gold Ore Treatment Chris Akop B.Eng (Mineral Processing) A thesis submitted for the degree of Master of Philosophy at ... CHAPTER 5 - BULK ROUGHING FLOTATION OF CHALCOPYRITE-PYRITE …
Jan 01, 2014· Read "The influence of pyrite content on the flotation of chalcopyrite/pyrite mixtures, Minerals Engineering" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
High flotation recoveries of both pyrite and chalcopyrite were achieved at an SBX concentration of 10 mg/L, and increasing the collector concentration increased the difficulty of flotation separation of pyrite from chalcopyrite. It is therefore necessary to add a selective depressant to the flotation pulp to separate the pyrite from chalcopyrite.
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