Results 21 to 30 of about 250 (133)

Effect of fluoride complexation by aluminium ions on the corrosion behaviour of aluminium cathodes used in zinc electrowinning

Journal of Materials Research and Technology, 2023
Fluoride (F−) impurity at 20 mg L−1 in the zinc sulphate electrolyte increased by 73% and 98% the corrosion rate of Al-1050 and Al-1070 alloys, respectively, which are used as cathode in zinc electrowinning process.
J.A. Paula, D. Majuste, N.H.J. Freire, E.M. Mazzer, V.F.C. Lins, V.S.T. Ciminelli   +5 more
doaj   +1 more source

Preparation and properties of Al-rod-Pb-0.2%Ag composite anode by surface ceramization

工程科学学报, 2019
To obtain a low-cost anode with low oxygen evolution potential and high catalytic activity for zinc electrowinning, Pb-0.2%Ag alloy was coated on an aluminum matrix surface by extrusion cladding technology, and a film layer with high catalytic ...
YAN Wen-kai, CHEN Bu-ming, LENG He, HUANG Hui, GUO Zhong-cheng, XU Rui-dong   +5 more
doaj   +1 more source

Towards Using MMO Anodes in Zinc Electrorefining: Mn Removal by Simulated Plant Off-Gas

Metals, 2023
Implementing mixed metal oxide (MMO) anodes in zinc electrowinning is highly desired due to the considerable reduction in electrical energy consumption. However, the presence of manganese in the electrolyte is a major obstacle for implementing MMO anodes
Masoomeh Askarian, Fariba Mousavi, Roozbeh Mollaabbasi, Elyse Benguerel, Carl Brown, Georges Houlachi, Houshang Alamdari   +6 more
doaj   +1 more source

Electrochemical Performance of Hybrid Cationic Aqueous-Based Rechargeable Battery with Different Current Collectors and Electrolytes

International Journal of Photoenergy, 2019
Different zinc foils as anode current collectors by electrowinning in various electrolytes with additives were prepared, which were evaluated through X-ray diffraction (XRD), scanning electron microscopy (SEM), float charge, and Tafel curve tests.
Shang Chen, Fang Tang, Ting He, Huanhuan Zhang, Shanshan Deng, Yukang Li, Xianwen Wu, Qiaobao Zhang, Yanhong Xiang, Wenbin Yan   +9 more
doaj   +1 more source

Optimal Control for Zinc Electrowinning Process With Current Switching

IEEE Access, 2017
This paper is concerned with the optimal control problem for the zinc electrowinning (EW) process during the current switching period. A mathematical model is developed to reveal the dynamic characteristics of the whole plant of the zinc EW process and ...
Chunhua Yang, Shijun Deng, Yonggang Li, Hongqiu Zhu, Fanbiao Li   +4 more
doaj   +1 more source

Effect of Thallium (I) Ions on the Zinc Electrowinning Process

Studia Universitatis Babes-Bolyai Chemia
The effects of thallium(Ⅰ) ions on the surface morphology, cathode current efficiency, cathode potential, polarization behavior, and electrochemical impedance spectroscopy of zinc electrowinning were studied by scanning electron microscopy and ...
Ning YUAN, Xi CHEN, Xing LIU, Lin FU, Yan CUI, Shihong HUANG, Wenjia ZHAO   +6 more
doaj   +1 more source

Germanium recovery from zinc calcines using a hydrometallurgical procedure

Revista de Metalurgia
In the final stage of zinc calcines processing, zinc is recovered by zinc electrowinning. However, the presence of germanium in the electrolyte seriously affects the current density in the electrowinning step. Since germanium is a critical and strategic
Francisco José Alguacil , Manuel Alonso, Luis J. Lozano-Blanco, José Ignacio Robla   +3 more
doaj   +1 more source

Hydrometallurgical Process for Zinc Recovery from C.Z.O. Generated by the Steelmaking Industry with Ammonia–Ammonium Chloride Solution

Metals, 2019
In this research, some experimental steps were investigated to recover zinc contained in crude zinc oxide (C.Z.O.). In the first stage, the C.Z.O. was treated in NH3–NH4Cl–H2O solution to dissolve the metals.
Shenghai Yang, Duoqiang Zhao, Yafei Jie, Chaobo Tang, Jing He, Yongming Chen   +5 more
doaj   +1 more source

Experimental Study on the Dissolution Behavior of Calcium Fluoride

Metals, 2020
The presence of halogens has an adverse effect on the zinc extraction process through electrowinning, the last phase of the RLE (Roasting, Leaching and Electrowinning) zinc extraction route.
Suchandra Sar, Caisa Samuelsson, Fredrik Engström, Lena Sundqvist Ökvist   +3 more
doaj   +1 more source

Tellurium Electrochemistry: From Mechanistic Analysis in Diverse Electrolytic Media to Advanced Energy Storage Applications

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
As a metalloid with broad prospects in advanced applications, Te has not been fully clarified in terms of its intricate electrochemical behaviors across varied systems. This review systematically integrates fundamental electrochemical mechanisms, reaction kinetics identifications, and device application insights, establishing a comprehensive framework ...
Meng Zhang, Jiguo Tu, R. Vasant Kumar, Libo Chen, Tangkai Wu, Lili Jiang, Shuqiang Jiao   +6 more
wiley   +1 more source