Pyrite Depression Study

In a preliminary laboratory study, we tested Pionera F-255 in a chalcopyrite cleaner flotation with high pyrite (>20%) containing ore. The feed for the laboratory flotation cell came directly from the cleaner feed tank in the plant.

The cleaner feed had an iron content of about 20%, most of it as pyrite. The standard reagent suite was applied and conditioned, and flotation lasted 8 min.

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Key takeaways:

  • Pionera F-255 improves the copper grade/recovery relationship in the concentrate.
  • Promising path to plant optimisation and increased copper production.
  • Further tests required to optimise application point and dosage.

Lab flotation data of copper grade with Pionera F-255 depressant.

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