Production of Electrolytic Zinc Powder from Zinc Dross Generated by Galvanizing Plant

Prasad, Sanjay (2009) Production of Electrolytic Zinc Powder from Zinc Dross Generated by Galvanizing Plant. In: National Seminar on Zinc Coated Steel Sheets - Technology & Markets, Dec. 21 & 22, 2009, New Delhi.

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Process based on direct electro winning of zinc dross, used as anodic feed material in a porous metallic conta-iner may be considered an attractive route to produce zinc powder. This investigation deals with the production of electrolytic zinc powder from zinc dross in an alkaline medium by using zinc dross as anodic feed material. The zinc dross obtained from galvanizing plant contains mostly zinc in metallic state with some amount of zinciron lock-ing. In electrolytic cell zinc dross was taken in a porous metallic container and used as anode. During experiments various parameters such as current density, current effic-iency, voltage and concentration of electrolyte etc. have been studied It was found that at 5 amp/dm- current dens-ity the formation of zinc powder is possible with 1.23 kWh per kg of energy consumption. The impressed voltage was found 1.2 V with a current efficiency of 90%. The zinc powder obtained fulfills the characteristics of end use.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:
Uncontrolled Keywords:Electrolytic Zinc; galvanizining plant; zinc dross; zinc powder
Divisions:Metal Extraction and Forming
ID Code:5704
Deposited By:Sahu A K
Deposited On:04 Jul 2012 16:46
Last Modified:30 Jan 2017 16:44
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