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Effect of Mechanical Activation on the Kinetics of Copper Leaching from Copper Sulfide (CuS)

Jaeryeong Lee, Suyun Kim

2018enmechanical activationleachingcopper sulfideshrinking-core modelapparent activation energy

Abstract

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The effect of mechanical activation on the copper leaching of copper sulfide, CuS, in 1 M HNO3 (slurry density: 10 g/L) was investigated by analysis of the leachability and the apparent activation energy. Mechanical activation produced an increase in the leachability and a decrease of the activation energy in this leaching reaction. The leachability increased proportionally to the degree of mechanical activation, reaching 96.6% leaching within 60 min at 80 ◦C from CuS ground at 700 rpm for 15 min. This leaching process was controlled by surface chemical reaction following the shrinking-core model. The apparent activation energy of leaching for CuS (71.5 kJ/mol) in the range of 50 to 80 ◦C decreased with an increase of the degree of mechanical activation, reaching 44.3 kJ/mol for Cu leaching from CuS ground at 700 rpm for 15 min.

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Cite This Work

@article{32f17867-74fe-4b70-8729-cb09ecaf203c,
  title={Effect of Mechanical Activation on the Kinetics of Copper Leaching from Copper Sulfide (CuS)},
  author={Jaeryeong Lee and Suyun Kim},
  year={2018},
  language={en}
}
TY  - JOUR
TI  - Effect of Mechanical Activation on the Kinetics of Copper Leaching from Copper Sulfide (CuS)
AU  - Jaeryeong Lee
AU  - Suyun Kim
PY  - 2018
LA  - en
ER  -

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