Improving Current Efficiency Through Optimizing Electrolyte Flow in Zinc Electrowinning Cell

2016 ◽  
pp. 239-245 ◽  
Author(s):  
Hongdan Wang ◽  
Wentang Xia ◽  
Wenqiang Yang ◽  
Bingzhi Ren
Keyword(s):  
Current Efficiency ◽  
Zinc Electrowinning ◽  
Electrolyte Flow ◽  
Electrowinning Cell

Flow field characterization in the vicinity of vertical plane electrodes in a bench-scale zinc electrowinning cell

2018 ◽  
Vol 181 ◽  
pp. 103-112 ◽  
Author(s):  
Jin Luo ◽  
PengPeng Jiao ◽  
Ning Duan ◽  
Fuyuan Xu ◽  
Linhua Jiang
Keyword(s):  
Flow Field ◽  
Vertical Plane ◽  
Zinc Electrowinning ◽  
Bench Scale ◽  
Electrowinning Cell

EFFECT OF IRON ON ENERGY CONSUMPTION AND CURRENT EFFICIENCY OF ZINC ELECTROWINNING FROM SULFATE SOLUTIONS

2010 ◽  
Vol 7 (1-2) ◽  
pp. 61-66 ◽  
Author(s):  
Vanessa de Freitas Cunha Lins ◽  
Renata Abelha ◽  
Maria das Mercês Reis de Castro ◽  
Marina Maciel Dias de Souza ◽  
Leticia Lanza de Moraes ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Current Efficiency ◽  
Zinc Electrowinning ◽  
Sulfate Solutions

Influence of Electrolyte Hydrodynamics on Current Yield in Ferrate(VI) Production by Anodic Iron Dissolution

2000 ◽  
Vol 65 (1) ◽  
pp. 133-140 ◽  
Author(s):  
Karel Bouzek ◽  
Martin J. Schmidt ◽  
Anthony A. Wragg
Keyword(s):  
Current Efficiency ◽  
White Cast Iron ◽  
Iron Electrode ◽  
Anode Surface ◽  
Current Yield ◽  
Electrolyte Flow ◽  
Mean Velocity ◽  
Iron Dissolution ◽  
Naoh Solution ◽  
Current Densities

The dependence of current efficiency for ferrate(VI) synthesis on the superimposed electrolyte flow rate was determined using 14 M NaOH solution and a white cast iron electrode. The electrolyte mean velocity in the cell ranged from 0.4 to 2.9 cm s-1 and current density from 1.4 to 35.3 mA cm-2. It was found that current efficiency was influenced by electrolyte velocity only at current densities lower than 7 mA cm-2. This is explained in terms of the removal of intermediate products from the anode surface by the electrolyte convection. This factor becomes negligible at higher current densities in comparison to mass transfer induced by oxygen evolution on the anode surface.

Reduction of oxygen to peroxide in a trickle electrode

1989 ◽  
Vol 54 (6) ◽  
pp. 1564-1574 ◽  
Author(s):  
Otomar Špalek ◽  
Karel Balogh
Keyword(s):  
Particle Size ◽  
Current Efficiency ◽  
Electrode Material ◽  
Pressure Loss ◽  
Peroxide Formation ◽  
Liquid Holdup ◽  
Electrolyte Flow ◽  
Electrode Thickness ◽  
Material Particle ◽  
Flow Rates

The effects of the electrode material particle size, electrode thickness, diaphragm properties and gas and electrolyte flow rates on the pressure loss and liquid holdup in the electrode and on the current efficiency of peroxide formation by oxygen reduction were studied in a trickle electrode. The results are discussed using trickle-bed electrode calculations.

The Influence of Anode Composition on Energy Consumption and Current Efficiency in Zinc Electrowinning

2017 ◽  
Vol 164 (7) ◽  
pp. E166-E172 ◽  
Author(s):  
Somayeh Dashti ◽  
Fereshteh Rashchi ◽  
Massoud Emamy ◽  
Ehsan Vahidi
Keyword(s):  
Energy Consumption ◽  
Current Efficiency ◽  
Zinc Electrowinning
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