Valorization of copper from low-grade ore by leaching: influence of sulphuric acid concentration
Bogdanović, Grozdanka
Trumić, Maja
Stevanović, Zoran
ABSTRACT: This paper presents an investigation of low-grade copper ore leaching using sulphuric acid where dissolved oxygen and iron(III) ions play a role of oxidant. The influence of initial acid concentration on copper and iron extraction was examined. The copper concentration in the leach solution ranged from 0.78 to 1.25 g/dm3, whereas the iron concentration ranged from 1.89 -2.32 g/dm3. It was found that the metal extraction increases with increasing acid concentration. The total copper extraction of 38% was attained with 0.5 M H2SO4 after 180 min of reaction.
engleski
2021
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Keywords: Acid Leaching, Copper, Low-Grade Ores.