Results 71 to 80 of about 2,968 (186)

Evolution of Solid Products Formed During the Cathodic Decomposition of Chalcopyrite at Different Energetic Conditions in Acetic Acid

Metals
This paper presents a systematic analysis of the solid products formed during the cathodic decomposition of chalcopyrite using the acetic acid system. The reduction of chalcopyrite was assessed using different electrochemical and surface characterization
Laura Denisse Jasso-Recio, Juan Carlos Fuentes-Aceituno, Roberto Pérez-Garibay, Aldo Valentín Enríquez-Farías, Alfredo Flores-Valdés, Jesús Torres-Torres   +5 more
doaj   +1 more source

Novel pathway of chalcopyrite formation at low temperature in microenvironments of acidic, metal-rich sediments

Communications Earth & Environment
Chalcopyrite (CuFeS2) is the main source of copper worldwide and is usually formed at high temperature. Its occurrence at low temperature is poorly documented, and the mechanisms controlling its formation remain uncertain.
Andrey M. Ilin, Iñaki Yusta, Maxim Ilyn, Ana Martinez-Amesti, Charlotte van der Graaf, Irene Sánchez-Andrea, Andreas Scheinost, Damien Prieur, Andrea Sorrentino, Robert Oliete, Zhiquan Li, Weiduo Hao, Yuhao Li, Daniel Alessi, Kurt O. Konhauser, Javier Sánchez-España   +15 more
doaj   +1 more source

Effect of Mechanical Activation on Electrochemical Properties of Chalcopyrite in Iron-Containing Sulfuric Acid Solutions

Metals
Mechanical activation significantly enhances the leaching of chalcopyrite, a process that is fundamentally electrochemical in nature. Thus, a comprehensive understanding of its impact on the electrochemical behavior of chalcopyrite in leaching systems is
Yuxin Li, Zuyuan Tian, Xu Wang, Congren Yang   +3 more
doaj   +1 more source

On the Chalcopyrite inclusions in Sphalerite

Boletim da Faculdade de Filosofia, Ciências e Letras da Universidade de São Paulo. Mineralogia, 1952
Uma das finalidades do presente trabalho foi medir as porcentagens de inclusões de calcopirita em cristais de esfalerita, que formam concrescimento de ocorrência relativamente frequente nas jazidas hidrotermais. Parece existir uma relação entre porcentagens de inclusões e intensidade hidrotermal dos depósitos, como também entre porcentagens de ...
openaire   +2 more sources

Effect and Mechanism of New Chalcopyrite Depressant GX3 on Flotation Separation of Copper and Molybdenum

Kuangchan zonghe liyong
In view of the problems of environmental pollution and large consumption of reagents in traditional chalcopyrite depressant, it is of great significance to develop new depressant to achieve effective separation of copper and molybdenum.
Wentao XU, Yuemeng LIN, Baisui HAN, Haoyu XIE   +3 more
doaj   +1 more source

Electrolysis of chalcopyrite

, 2018
Copper is one of the most important metals globally, due to its wide application range and excellent chemical properties. Today it is commonly produced from chalcopyrite concentrates by the pyrometallurgical route with high emissions of greenhouse gasses.
openaire   +1 more source

Chalcopyrite dissolution rate law from pH 1 to 3

Geologica Acta, 2009
Chalcopyrite dissolution kinetics in the pH range of 1 to 3 were studied by means of long-term flow-through experiments to obtain a dissolution rate law which can be coupled with reactive transport models to forecast Acid Rock Drainage.
P. ACERO, J. CAMA, C. AYORA, M.P. ASTA
doaj  

Phages released from Acidithiobacillus ferrooxidans enhance chalcopyrite bioleaching by alleviating passivation and promoting sulfur turnover. [PDF]

Adv Biotechnol (Singap)
Yang Z, Liu Z, Meng D, Yang Z, Hu K, Yin Z, Xia L, Ibrahim IA, Xiao X, Liu X, Yin H.   +10 more
europepmc   +1 more source

Petrographic data from a stratigraphic interval containing a gamma-ray anomaly near the Theresa-Keeseville formational boundary in eastern Ontario, Canada. [PDF]

Data Brief
Al-Mufti ON, Crow HL, Knight RD, Russell HAJ.   +3 more
europepmc   +1 more source

Pyrite-assisted mechanochemical leaching of chalcopyrite concentrate in sulfuric acid under non-oxidative conditions. [PDF]

Sci Rep
Tahami M, Shojaei V, Schaffie M, Ranjbar M.   +3 more
europepmc   +1 more source