Journal
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
Volume 19, Issue 9, Pages 782-786Publisher
SPRINGER
DOI: 10.1007/s12613-012-0628-9
Keywords
malachite; copper ore treatment; leaching; organic acids; citric acid
Ask authors/readers for more resources
Leaching of an oxidized copper ore containing malachite, as a new approach, was investigated by an organic reagent, citric acid. Sulfuric acid is the most common reagent in the leaching of oxide copper ores, but it has several side effects such as severe adverse impact on the environment. In this investigation, the effects of particle size, acid concentration, leaching time, solid/liquid ratio, temperature, and stirring speed were optimized. According to the experimental results, malachite leaching by citric acid was technically feasible. Optimum leaching conditions were found as follows: the range of particle size, 105-150 mu m; acid concentration, 0.2 M; leaching time, 30 min; solid/liquid ratio, 1:20 g/mL; temperature, 40 degrees C; and stirring speed, 200 r/min. Under the optimum conditions, 91.61% of copper was extracted.
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