Results 31 to 40 of about 17,376 (215)

Enhancing magnetism and magnetic separation of ultrafine chalcopyrite from talc through surface oxidation treatment

Journal of Materials Research and Technology
Magnetic separation has been proposed to greenly separate chalcopyrite and talc several decades ago, due to their extremely similar floatability of minerals.
Song Zhang, Luzheng Chen, Yang Hong, Guanyu Liang, Canneng Chen, Yongjun Xian, Shuming Wen   +6 more
doaj   +1 more source

Effect of Aerated Stirring Pretreatment on the Flotation Separation of Chalcopyrite and Pyrrhotite

Kuangchan zonghe liyong, 2022
Aerated stirring pretreatment to achieve effective flotation separation of chalcopyrite and pyrrhotite has been studied in this paper. It is mainly investigated the relationship between the dosing sequence, mixing time and aeration rate and the recovery ...
Fuya Zhang, Jianhui Zhang
doaj   +1 more source

Factors affecting the attachment of Metallosphaera hakonensis during the colonisation of low grade mineral sulphide heaps [PDF]

, 2011
This thesis pertains to the extraction of copper via heap bioleaching, focussing specifically on the bioleaching of the mineral sulphide, chalcopyrite (CuFeS2).
Bromfield, Lucinda
core   +1 more source

Experimental characterization of chalcopyrite ball mill grinding processes in batch and continuous flow processing modes to reduce energy consumption

Journal of Materials Research and Technology, 2021
A mineralogy, rheology, and energy consumption-based experimental characterization of chalcopyrite ball mill grinding processes, in both batch and continuous flow processing modes, is carried out in this work.
Cesar Celis, Antonios Antoniou, Julio Cuisano, Adolfo Pillihuaman, Danmer Maza   +4 more
doaj   +1 more source

A scanning electrochemical microscopy (SECM) study of the interfacial solution chemistry at polarised chalcopyrite (CuFeS2) and chalcocite (Cu2S)

Electrochemistry Communications, 2020
Chalcopyrite (CuFeS2) passivation during hydrometallurgical copper extraction is attributed to multiple competing mechanisms that are still not completely understood.
Rahul Ram, Victoria E. Coyle, Alan M. Bond, Miao Chen, Suresh K. Bhargava, Lathe A. Jones   +5 more
doaj   +1 more source

Flotation of Seafloor Massive Sulfide Ores: Combination of Surface Cleaning and Deactivation of Lead-Activated Sphalerite to Improve the Separation Efficiency of Chalcopyrite and Sphalerite

Metals, 2021
The purpose of this study is to propose the flotation procedure of seafloor massive sulfide (SMS) ores to separate chalcopyrite and galena as froth and sphalerite, pyrite, and other gangue minerals as tailings, which is currently facing difficulties due ...
Kosei Aikawa, Mayumi Ito, Atsuhiro Kusano, Ilhwan Park, Tatsuya Oki, Tatsuru Takahashi, Hisatoshi Furuya, Naoki Hiroyoshi   +7 more
doaj   +1 more source

Rapid Cooling After Device Annealing Suppresses Interface Losses in Cu2ZnSnS4 Solar Cells Enabling High Efficiency and Stability

Advanced Science, EarlyView.
Rapid cooling after device annealing regulates the CdS/CZTS heterojunction and Mo/CZTS back contact, suppressing interfacial recombination and modifying the interfacial MoS2 layer, thereby enabling a 15.9% indoor PCE in pure‐sulfide CZTS solar cells.
Achmad Nasyori, Mati Danilson, Idil Mengü, Maris Pilvet, Jüri Krustok, Reelika Kaupmees, Valdek Mikli, Raavo Josepson, Yuancai Gong, Akhil Alexander, Shreyash S. Hadke, Aurelian Catalin Galca, Paola Vivo, Lydia Helena Wong, Thomas Unold, Maarja Grossberg‐Kuusk, Marit Kauk‐Kuusik   +16 more
wiley   +1 more source

Effect of Galvanic Interactions Between Grinding Media and Sulfide Minerals on Flotation Kinetics of Chalcopyrite [PDF]

Muhandisī-i manābi̒-i ma̒danī
Although the flotation separation of sulfides and their electrochemical interactions have been examined in some investigations, study the direct relationship between the flotation kinetics of sulfides and their galvanic interactions during the process ...
E. Ravanasa, Gh. Karimi, R. Ahmadi
doaj   +1 more source

Boosting Bifacial Output Power of Ag‐CIGS Solar Cells by Optimizing ITO Back‐Contact Thickness for Tandem Applications

Carbon Energy, EarlyView.
Optimized ITO back contact with pre‐Ga supply growth and Ag incorporation suppresses GaOx formation and interface recombination in bifacial CIGS solar cells. The devices achieve 17.25% front and 5.77% rear efficiency, delivering record bifacial power density up to 32.26 mW cm−2 in 4T perovskite/CIGS tandem architectures under enhanced albedo ...
Amanat Ali, Dae‐Ho Son, Wook Hyun Kim, Hyo Jeong Jo, Dong‐Hwan Jeon, Won‐Joon Kim, Van‐Quy Hoang, Jaebaek Lee, Bashiru Kadiri‐English, Jin‐Kyu Kang, Kee‐Jeong Yang, Shi‐Joon Sung, Dae‐Kue Hwang, Dae‐Hwan Kim   +13 more
wiley   +1 more source

The kinetics of the dissolution of chalcopyrite in chloride media [PDF]

, 2009
One of the most important outstanding problems with the hydrometallurgy of copper is the low temperature leaching of chalcopyrite. In this thesis, a fundamental study at low temperature was undertaken in order to establish a mechanism, which is ...
Velásquez Yévenes, Lilian
core