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PRESSURE LEACHING OF ENARGITE-PYRITE CONCENTRATES

María Cristina Ruiz, María Victoria Vera

2023espressure leachingenargitepyrite

Abstract

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Enargite rich copper concentrates can not be treated by conventional smelting/converting technology and thus nonconventional methods such as leaching must be used. Since enargite (Cu3AsS4) is a hard to dissolve mineral in acidic solutions, pyrite, a common impurity in copper concentrates, could be used to increase the enargite dissolution rate. On this matter, we present in this work experimental data on the pressure leaching of a mixed enargite-pyrite concentrate in H2SO4-O2. The results show that the dissolution of enargite from the mixed concentrate is considerably faster than the dissolution of pure enargite mineral. The leaching rate increases significantly with temperature. Over 98% of enargite was dissolved in leaching 64 micron size particles at 200 ºC and 100 psi of partial pressure of oxygen in just 30 minutes. A change in the partial pressure of oxygen from 50 to 150 psi showed also a large influence in the leaching rate.

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Cite This Work

@article{689c14ce-4995-4807-9a7c-5442c92b9c2e,
  title={PRESSURE LEACHING OF ENARGITE-PYRITE CONCENTRATES},
  author={María Cristina Ruiz and María Victoria Vera},
  year={2023},
  language={es}
}
TY  - JOUR
TI  - PRESSURE LEACHING OF ENARGITE-PYRITE CONCENTRATES
AU  - María Cristina Ruiz
AU  - María Victoria Vera
PY  - 2023
LA  - es
ER  -

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