Effect of Chloride and Ferrous Ions on Improving Copper Leaching from Black Copper Ores
Rossana Sepúlveda,
Melissa Martínez,
Pía Hernández
et al.
Abstract:Although the importance of black copper ores is well established, many topics remain to be studied. This manuscript describes the efforts to improve copper recovery from refractory ores on a pilot scale. Preliminary tests provided the water dose to form a stable and compact agglomerate of 89 L per ton of ore and an acid dosage of 40 kg per ton of ore. The column leaching method resulted in an effluent with 1.63 g/L Cu, a pH of 1.04, and a redox potential of 675 mV (average). Despite the similarities observed i… Show more
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