Results 201 to 210 of about 540,025 (266)
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Current Distribution at the Electrodes in Zinc Electrowinning Cells
Journal of The Electrochemical Society, 1995The current distribution in zinc electrowinning cells was determined experimentally by weighing the deposited zinc and it was calculated using a mathematical model. The Laplace equation was solved for a two‐dimensional cross section of the interelectrode space with boundary conditions corresponding to secondary current distribution.
K. Bouzek +5 more
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Influence of nickel on cathode process of zinc electrowinning
Hydrometallurgy, 2012Abstract The influence of Ni 2 + on the cathode polarization process and the kinetics equation and its parameters in zinc electrowinning has been investigated in this paper. When [Ni 2 + ] − 1 , the limiting current density increases with increasing Ni 2 + concentration up to a maximum where [Ni 2 + ] = 4 mg L − 1 .
Zhidong Liu +5 more
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Study on Behavior of Impurity Antimony in Zinc Electrowinning
Advanced Materials Research, 2011By means of an electrochemical study, the influence of Sb3+ on cathode polarization process in zinc electrowinning and its kinetics equation and parameters have been studied. The results show that antimony has a depolarization function in the presence of [Sb3+] ≥0.5 mg·L–1 in zinc electrowinning, and Sb3+ has a polarization function in zinc ...
Xiao Hua Yu +5 more
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Electrochemical study of Pb anodes for zinc electrowinning industry
Surface Engineering, 2014The corrosion resistance and electrochemical behaviour of recovery (recovery anodes are made of remelted alloys) Pb, Pb–0·4Ag (wt-%) and Pb–0·1Ag–0·07Ca (wt-%), anode alloys in acidic zinc sulphate electrolyte were investigated. Their electrocatalytic activity towards oxygen evolution reaction (OER) and corrosion resistance were evaluated using ...
Sh. Nakisa +2 more
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The electrowinning of cadmium in the presence of zinc
Hydrometallurgy, 2010Abstract The electrowinning of cadmium in the presence of zinc has been investigated. As such, the effects of initial cadmium concentration (40–160 g/L), current density (50–150 A/m2), free acid concentration (0–196 g/L), initial zinc concentration (20–120 g/L), and temperature (25–70 °C) on current efficiency (CE) and specific power consumption (SPC)
Mohammad Sadegh Safarzadeh +1 more
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Identifying research opportunities in zinc electrowinning
JOM, 1997J. A. González-Domínguez +1 more
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Effect of impurity presence in zinc chloride electrowinning
2003Zinc chloride electrowinning presents difficulties in obtaining smooth, compact and dendrite free deposits with a high current efficiency due to the presence of undesirable metal ions. However, it is hard to define a level of impurities tolerable in zinc deposition, and despite a lot of research in this field, the reaction mechanisms of the undesired ...
LUPI, Carla +2 more
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Zinc and Lead Solvent Extraction and Electrowinning
2023Shokrullah Hussaini, Angela Manka Tita
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Effect of germanium on zinc electrowinning sulfate solutions
2014The basic method for the electrolyte zinc production is an electrowinning process based on sulfate solutions. The presence of the impurities in the electrolyte is a major problem for the zinc electrowinning industry. They decrease the current efficiency, increase the energy consumption and deteriorate the quality of cathode deposited zinc. In this work
Mehmed E., Stefanova V., Lucheva B.
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Development of a microporous titanium based PbO2–MnO2 anodes in zinc electrowinning process
Journal of Applied ElectrochemistryK. Jafarzadeh +3 more
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