ELECTROWINNING OF COPPER FROM CHLORIDE SOLUTIONS IN PRESENCE OF GAS SPARGING

Authors
TAILOKA F FRAY DJ
Citation
F. Tailoka et Dj. Fray, ELECTROWINNING OF COPPER FROM CHLORIDE SOLUTIONS IN PRESENCE OF GAS SPARGING, Transactions - Institution of Mining and Metallurgy. Section C. Mineral processing & extractive metallurgy, 102, 1993, pp. 7-11
Citations number
32
Categorie Soggetti
Metallurgy & Mining",Mineralogy
Journal title
Transactions - Institution of Mining and Metallurgy. Section C. Mineral processing & extractive metallurgy → ACNP
ISSN journal
03719553
Volume
102
Year of publication
1993
Pages
7 - 11
Database
ISI
SICI code
0371-9553(1993)102:<7:EOCFCS>2.0.ZU;2-Q
Abstract
Microporous ceramic tubes (15-mum pore diameter) and PVC membranes (10 -mum pore diameter) have been applied as spargers in the electrowinnin g of copper from concentrated and dilute chloride electrolytes. At a c urrent density of 600 A m-2 and a nitrogen gas sparging flow rate (at NPT) of 1.53 cm3 s-1 per unit (cm) electrode length it was possible to electrowin planar rather than powdery deposits with copper concentrat ions as low as 0.157 M. To obtain a planar deposit at higher concentra tions of cupric chloride the most realistic optimum current density ap pears to lie between 1000 and 1500 A m-2.