Results 61 to 70 of about 2,824 (186)

Effect of Ultrasonic Pre-Treatment and Aeration on Flotation Separation of Chalcopyrite from Pyrite [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2018
In this paper, the effect of ultrasonic pre-treatment and aeration on the flotation separation of chalcopyrite from pyrite was investigated at different amounts of potassium ethyl xanthate (KEX), as a collector, and pH values.
Bijan Taheri, Majid Lotfalian
doaj  

Basic Notions and Innovations in Electrochemical Advanced Oxidation Processes for Water Treatment

Small Science, Volume 6, Issue 7, July 2026.
Electrochemical advanced oxidation processes effectively degrade persistent organic pollutants, turning polluted water into a clean resource. Through the use of reactive species, hybrid systems, and computational modeling these approaches optimize treatment and open the door to innovative, sustainable next‐generation water purification technologies ...
Fida Tanos, Chaimaa Gomri, Clément Trellu, Mehmet A. Oturan, Shuaishuai Li, Minghua Zhou, Kehinde D. Jayeola, Omotayo A. Arotiba, Elisama Vieira dos Santos, Carlos A. Martínez‐Huitle, Mikhael Bechelany, Marc Cretin   +11 more
wiley   +1 more source

A novel molybdenite depressant for efficient selective flotation separation of chalcopyrite and molybdenite

International Journal of Mining Science and Technology
A novel small molecule depressant (M-DEP) was used to separate chalcopyrite and molybdenite via flotation. The results showed that M-DEP had an excellent selective depression on molybdenite, while had little effect on the flotation of chalcopyrite.
Mengyao Qi, Weijun Peng, Wei Wang, Yijun Cao, Longyu Zhang, Yukun Huang   +5 more
doaj   +1 more source

Surface‐Ligand‐Dependent Excited‐State Dynamics in Aqueous CuInSe2/ZnS Quantum Dot–Chlorophyll Assemblies

Advanced Materials Interfaces, Volume 13, Issue 12, 23 June 2026.
CuInSe2/ZnS quantum dots are synthesized in water and coupled with chlorophyll to probe ligand‐controlled excited‐state interactions. Broad visible–NIR emission and high PLQY are observed. Time‐resolved measurements reveal shortened chlorophyll lifetimes, indicating dynamic quenching via Förster energy and/or charge transfer, highlighting surface ...
Özge İbiş, Hadi Jahangiri, Elif Çeltek, Caner Ünlü   +3 more
wiley   +1 more source

Wurtzite‐Chalcopyrite Crystal Polymorphism in CuGaS2 Nanoparticles Dictates the Localized Surface Plasmon Resonance

Chemistry – A European Journal, Volume 32, Issue 21, 1 June 2026.
Crystal phase‐ and size‐selective synthesis of chalcopyrite and wurtzite‐type CuGaS2 NPs was successfully achieved. They exhibited clear LSPR in the NIR region. The extinction coefficient of chalcopyrite was three times higher than that of wurtzite due to its greater symmetry and dipole moment. These results will enable precise control of the plasmonic
Keito Sano, Daniel M. Packwood, Masanori Sakamoto   +2 more
wiley   +1 more source

Effect of redox potential on chalcopyrite dissolution imposed by addition of ferrous ions

Eclética Química, 2018
Copper is a metal with a great economic interest and about 70% is found in nature in chalcopyrite form (CuFeS2). However the chalcopyrite dissolution is a challenge for industries as well as researchers because of its slow dissolution kinetics.
Ana Laura Araújo Santos, Fabiana Antonia Arena, Assis Vicente Benedetti, Denise Bevilaqua   +3 more
doaj   +1 more source

Efficient and Green Flotation Separation of Molybdenite from Chalcopyrite Using 1-Thioglycerol as Depressant

Metals
The effective and environmental separation of chalcopyrite and molybdenite has long presented a challenge in mineral processing due to their similar floatability and close association at room temperature. This study explores the non-toxic 1-thioglycerol (
Feng Jiang, Shuai He, Wei Sun, Yuanjia Luo, Honghu Tang   +4 more
doaj   +1 more source

Leaching of a Mongolian chalcopyrite concentrate

Mongolian Journal of Chemistry, 2018
A Mongolian chalcopyrite flotation concentrate was leached using sodium hypochlorite adjusted to different pH using hydrochloric acid. It was found that using a starting pH of below 5.0 resulted in more efficient leaching.
Nicholas J Welham, Jadambaa Temuujin, Nader Setoudeh   +2 more
doaj   +1 more source

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

Study on the Depression Performance and Mechanism of the Novel Chalcopyrite Depressant 2-Mercapto-5-benzimidazole Sulfonate Dihydrate in the Flotation Separation of Cu-Mo Bulk Concentrate

Molecules
Chalcopyrite and molybdenite exhibit similar surface wettability and high floatability, which has long hindered their efficient and selective separation in mineral processing.
Jianhua Chen, Xufu Zhang, Lujing Liang, Anruo Luo   +3 more
doaj   +1 more source