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Zinc and Lead Leaching from Sphalerite-Galena Concentrate Using Deep Eutectic Solvents Based on Choline Chloride: Effect of Roasting and Iodine as Oxidizing Agent. [PDF]

Molecules
Moreno K, Díaz X, Endara D, Sánchez F, Aragón-Tobar CF.   +4 more
europepmc   +1 more source

Improving process granularity of life cycle inventories for battery grade nickel. [PDF]

Npj Mater Sustain
Roy S, Moustafa H, Vaidya K, Harvey JP, Fradette L.   +4 more
europepmc   +1 more source

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A laboratory-scale investigation of alkaline zinc electrowinning

Minerals Engineering, 2003
Abstract The possibility of utilizing alkaline electrolysis technique in zinc electrowinning has been investigated. Effects of electrolysis conditions on the morphology of deposited zinc were also studied. The composition of the electrolyte was selected to be in accordance with the industrial practice, 25 g/l Zn 2+ and 240 g/l NaOH. The investigated
S. Gürmen, M. Emre
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Continuous electrowinning of zinc

Hydrometallurgy, 2000
Abstract Synthetic and pure zinc solution produced from laboratory leached oxidised zinc ores, under controlled temperature and pH were subjected to continuous elctrowinning operations until the least possible zinc concentration was reached. Conventional DC electrolysis technique, PC and PCR procedures were examined.
A.E Saba, A.E Elsherief
openaire   +1 more source

Spouted bed electrowinning of zinc: Part I. Laboratory-scale electrowinning experiments

Metallurgical and Materials Transactions B, 1997
Two types of laboratory cells have been constructed to electrowin zinc from sulfate electrolytes: one cell was cylindrical while the other had a rectangular (flat) geometry. Cells were operated on industrial or synthetic electrolytes to electrodeposit zinc onto a spouted bed of zinc particles in the range of 0.75 to 1.45 mm.
Juan Carlos Salas-Morales, J. W. Evans, O. M. G. Newman, P. A. Adcock   +3 more
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Electrowinning of zinc from alkaline solutions

Journal of Applied Electrochemistry, 1986
The objective of this work was to determine the best conditions for minimizing energy consumption in zinc electrowinning from alkaline solutions. The effects of several variables, i.e. hydroxide concentration (300–500 gl−1), current density (50–1000 A m−2), temperature (24–74°C), cathode material (magnesium, nickel, lead, stainless steels 304 and 316 ...
Jean St-Pierre, Dominique L. Piron
openaire   +1 more source

Zinc electrowinning from aqueous chloride electrolytes

Journal of Applied Electrochemistry, 1983
Smooth, compact, dendrite-free zinc deposits can be electrowon from acid zinc chloride electrolyte using a diaphragm cell featuring catholyte agitation by air sparging. A correlation exists between the degree of zinc deposition polarization and the zinc deposit structure and orientation that can be used to evaluate the effectiveness of addition agents ...
D. J. Mackinnon, J. M. Brannen, R. M. Morrison   +2 more
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Reducing power consumption in zinc electrowinning

JOM, 2009
Approximately 7 million tons per annum of zinc are produced globally by traditional electrowinning which is a power intensive process. Power consumption is directly proportional to cell voltage which is thermodynamically limited to the potential difference between the oxygen evolution and zinc reduction reactions.
F. Parada T, E. Asselin
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Evaluating additives and impurities in zinc electrowinning

JOM, 1995
The zinc electrowinning (EW) process is very sensitive to the presence of impurities. There is only one EW plant in the world that we know of that operates at moderate current efficiency and deposition times without using any additives. All the others must use them continuously.
J. A. Gonzalez-Dominguez, R. W. Lew
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Preparation of Zinc Powders by Acid Electrowinning

Russian Journal of Non-Ferrous Metals, 2019
During the electrowinning of zinc in a mixture electrolyte of zinc sulfate and ammonium sulfate, the effects of current density, Zn2+ mass concentration and electrolytic additives on the morphology and current efficiency of Zn powders were evaluated. Finer Zn powders were obtained at high current density and low Zn2+ mass concentration.
null Rong Liang Zhang, Ai Dong Huang, Hao Guo, Qin Yao Lu, Dian Chun Ju, Zhi Bin Yang   +5 more
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