Journal
HYDROMETALLURGY
Volume 108, Issue 3-4, Pages 233-236Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.hydromet.2011.04.012
Keywords
Dissolution; Oxidised cobalt-copper ores; Hydrochloric acid
Categories
Ask authors/readers for more resources
An investigation of the dissolution of four oxidised Co-Cu ores, from the Democratic Republic of Congo (DRC, ex-Zaire), in hydrochloric acid and FeCl(2) solution was conducted. Cobalt leaching in the absence of FeCl(2) was < 36% but copper leaching was > 70%. Addition of FeCl(2) resulted in the reduction of Co(3+) to soluble Co(2+). The leaching of cobalt was very rapid with only a slow rate of dissolution evident beyond 30 min. The ratio of ferrous ions to cobalt in the ore was important with a > 2:1 ratio required to achieve > 95% Co dissolution. Copper dissolution was also rapid and was not affected by the presence of ferrous ions. Both metals were present in several different minerals, of which only the most abundant, heterogenite and malachite, were detected by XRD. (C) 2011 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available