Preparation of zinc powder from zinc dross

Prasad, Sanjay and Maity, S K and Kumari, Aarti and Randhawa, N S and Shekher, M C (2019) Preparation of zinc powder from zinc dross. Journal of Metallurgy and Materials Science, 61(3) . pp. 119-123.

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Abstract

Residue (zinc dross) generated during galvanization of steel contains about >80 wt% zinc metal. In present paper, zinc powder is produced from zinc dross in an alkaline medium by electrolysis using zinc dross as a consumable anode. In an electrolytic cell various parameters such as current density, current efficiency, voltage and concentration of electrolyte etc. have been optimized. The electrolytic cell was operated at room temperature using 16 g/L Zn, 200 g/L NaOH at current density of 5 A/dm2. The current efficiency was found to be 90% and the purity of zinc powder is 99.5%. This process offers single step recovery of zinc in the form of powder from galvanizing waste.

Item Type:Article
Official URL/DOI:https://doi.org/http://www.indianjournals.com/ijor...
Uncontrolled Keywords:Electrochemistry;Galvanizing waste;RecyclingZinc dross;Zinc powder
Divisions:Material Science and Technology
ID Code:8054
Deposited By:Sahu A K
Deposited On:14 Oct 2019 17:53
Last Modified:14 Oct 2019 17:53
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