Results 121 to 130 of about 548 (179)
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Continuous electrowinning of zinc
Hydrometallurgy, 2000Abstract 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
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Anode effects in electrowinning
Minerals Engineering, 1999Abstract In traditional electrowinning operations, metal particles from commercial insoluble anodes flake off the immersed surfaces under high current densities and thus become occluded on the adjacent cathode surface thereby impairing the cathode product quality and market grade. This results in an undersirable physical appearance of the cathode due
R.R. Moskalyk +3 more
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Intercell busbar design for copper electrowining
2015 IEEE Industry Applications Society Annual Meeting, 2015The design of intercell bars is of primary relevance to control electrowining costs. Two intercell technologies for designing these busbars are currently available: current source or voltage source. In this research current source is selected based on tankhouse operational data that consistently show better performance than its counterpart.
Eduardo P. Wiechmann +5 more
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Spouted bed electrowinning of zinc: Part I. Laboratory-scale electrowinning experiments
Metallurgical and Materials Transactions B, 1997Two 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 +3 more
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Organochlorine formation in magnesium electrowinning cells
Chemosphere, 2001The formation of organochlorines during the electrolytic production of magnesium was investigated using a laboratory-scale electrolytic cell having a graphite anode, a liquid aluminium alloy cathode, and a molten chloride electrolyte. The cell was operated at current densities ranging from 3000 to 10,000 A m(-2) and at temperatures ranging from 660 ...
R L, Deutscher, K J, Cathro
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An oxygen pumping anode for electrowinning aluminium
Physical Chemistry Chemical Physics, 2013The chemical potential of oxygen ions at the novel oxygen pumping anode for electrowinning aluminum was manipulated by the electromotive forces to create thermodynamic stability. It is our anticipation that this newly designed anode can be applied to electrochemical metallurgy of other metals, such as the direct electrochemical reduction of TiO2 in the
Changqing, Liu +4 more
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Electrowinning molybdenum and tungsten
JOM, 1964Projected long-range requirements for molybdenum and tungsten indicate that a new reduction technique is needed, and this article discusses research on one such method.
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Energy Efficiency of Electrowinning
2017The winning of high purity metal from aqueous solutions through electrodeposition is the final processing recovery step for many nonferrous metals. Direct electrical current/voltage provides the necessary driving force to promote the necessary reactions at an industrially relevant rate.
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