Seaweed glue as a novel polymer depressant for the selective separation of chalcopyrite and galena
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Minerals, Metallurgy and Materials"
DOI: 10.1007/s12613-019-1848-z
Abstract: The use of seaweed glue (SEG) as a novel polymer depressant for the separation of chalcopyrite from galena with butyl xanthate (BX) as a collector was studied through microflotation experiments. Contact angle, adsorption, dynamic potential,… read more here.
Keywords: chalcopyrite; novel polymer; seaweed glue; separation chalcopyrite ... See more keywords
The interaction of Ag+ with synthetic chalcopyrite in the presence of Fe3+ and Cu2+ in sulfuric acid solutions
Sign Up to like & getrecommendations! Published in 2020 at "Electrochimica Acta"
DOI: 10.1016/j.electacta.2020.135875
Abstract: Abstract Silver (Ag+) and cupric (Cu2+) ions are known to be catalysts for oxidation of chalcopyrite (CuFeS2) in acid solutions. The present study investigates the interaction between Ag+ and Cu2+ with synthetic chalcopyrite under oxidative… read more here.
Keywords: chalcopyrite; acid solutions; fe3 cu2; cu2 ... See more keywords
Fe Isotope Fractionation between Chalcopyrite and Dissolved Fe during Hydrothermal Recrystallization: An Experimental Study at 350 °C and 500 Bars
Sign Up to like & getrecommendations! Published in 2017 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2016.12.002
Abstract: Abstract Equilibrium Fe isotope fractionation between chalcopyrite and dissolved Fe was determined in acidic chloride-bearing fluid at 350 °C and 500 bars. The study utilized deformable gold-cell technology, which allowed time-series sampling of solution during chalcopyrite recrystallization… read more here.
Keywords: chalcopyrite; fractionation; equilibrium; exchange ... See more keywords
The anodic behaviour of covellite in chloride solutions
Sign Up to like & getrecommendations! Published in 2017 at "Hydrometallurgy"
DOI: 10.1016/j.hydromet.2017.06.018
Abstract: A detailed study of the anodic behaviour of synthetic covellite in acidic chloride solutions has been conducted as part of an overall program on the fundamental aspects of the heap leaching of copper sulfide minerals.… read more here.
Keywords: chalcopyrite; anodic behaviour; chloride solutions; copper ... See more keywords
The acidic ferric sulfate leaching of primary copper sulfides under recycle solution conditions observed in heap leaching. Part 1. Effect of standard conditions
Sign Up to like & getrecommendations! Published in 2018 at "Hydrometallurgy"
DOI: 10.1016/j.hydromet.2018.05.006
Abstract: Abstract Understanding the dissolution of copper from chalcopyrite is important as chalcopyrite is the most abundant copper mineral in the earth's crust. The main method for extraction of copper from chalcopyrite is by flotation concentration… read more here.
Keywords: chalcopyrite; extraction; copper; effect ... See more keywords
Electrochemical dissolution of chalcopyrite in the presence of thiourea and formamidine disulfide
Sign Up to like & getrecommendations! Published in 2018 at "Hydrometallurgy"
DOI: 10.1016/j.hydromet.2018.05.023
Abstract: Abstract The effects of thiourea (TU) and formamidine disulfide (FDS) on the electrochemical dissolution of chalcopyrite in sulfuric acid solution and at ambient temperature were assessed. The corrosion current densities of a CuFeS2 electrode were… read more here.
Keywords: chalcopyrite; formamidine disulfide; electrochemical dissolution; thiourea formamidine ... See more keywords
A study of the electro-assisted reductive leaching of a chalcopyrite concentrate in HCl solutions. Part I: Kinetic behavior and nature of the chalcopyrite reduction
Sign Up to like & getrecommendations! Published in 2018 at "Hydrometallurgy"
DOI: 10.1016/j.hydromet.2018.09.012
Abstract: Abstract This first part of research presents an analysis of the electro-assisted reductive leaching (ERL) of refractory chalcopyrite (CuFeS2) performed in HCl media using an electrolytic cell operated at room temperature and pressure. This is… read more here.
Keywords: chalcopyrite; reduction; chalcopyrite reduction; assisted reductive ... See more keywords
An XAS study of silver species evolution in silver-catalysed chalcopyrite bioleaching
Sign Up to like & getrecommendations! Published in 2019 at "Hydrometallurgy"
DOI: 10.1016/j.hydromet.2019.04.023
Abstract: Abstract The catalysing effect of Ag+ or Ag nanoparticle (AgNp) on chalcopyrite (bio)leaching at 30 °C was studied in this paper, and the change of Ag speciation was investigated by Ag K-edge X-ray Absorption Near-edge Spectroscopy… read more here.
Keywords: chalcopyrite bioleaching; silver; chemical leaching; changed ag2s ... See more keywords
Microwave improving copper extraction from chalcopyrite through modifying the surface structure
Sign Up to like & getrecommendations! Published in 2020 at "Journal of materials research and technology"
DOI: 10.1016/j.jmrt.2019.10.054
Abstract: Abstract Microwave-assisted leaching as a green and efficient method for leaching chalcopyrite has attracted increasing attention. Researchers have actively explored the reasons why microwaves have a positive impact on copper extraction. In this work, X-ray… read more here.
Keywords: chalcopyrite; surface; copper extraction; surface structure ... See more keywords
An investigation into the selective separation and adsorption mechanism of a macromolecular depressant in the galena-chalcopyrite system
Sign Up to like & getrecommendations! Published in 2019 at "Minerals Engineering"
DOI: 10.1016/j.mineng.2019.02.004
Abstract: Abstract In the present article, a macromolecular polymer poly(acrylamide-allylthiourea) (PAM-ATU) was synthesized by solvent method with an average molecular weight of 1.66 × 104 g/mol measured by GPC. Its structure was characterized by FT-IR, 1H NMR and 13C… read more here.
Keywords: pam atu; separation; adsorption; chalcopyrite ... See more keywords
Selective flotation of chalcopyrite from pyrite using diphosphonic acid as collector
Sign Up to like & getrecommendations! Published in 2019 at "Minerals Engineering"
DOI: 10.1016/j.mineng.2019.105890
Abstract: Abstract Ethyl xanthate (EX) is a widely used collector in the flotation of sulfide minerals. However, it also has the disadvantages of low selectivity and harm to human health. Screening and/or designing more selective and… read more here.
Keywords: diphosphonic acid; flotation; chalcopyrite pyrite; collector ... See more keywords