In 2021, Hudbay identified the opportunity to reprocess
COB Technology
COB has been developing minerals processing technology for extraction and recovery of cobalt and elemental sulphur from cobalt-pyrite feedstocks. The minerals processing technology is focussed on the treatment of pyrite, to recover payable metals, elemental sulphur, and generate environmentally stable iron oxide leach residues. The process specifically avoids the simultaneous production of sulphuric acid, which normally occurs when roasting pyrite, or leaching pyrite via pressure oxidation.
The technology has progressed to a Demonstration Plant scale in Broken Hill. During the execution of feasibility studies supporting the
Previously, COB had successfully evaluated the application of the technology to cobalt-pyrite feedstocks from other locations within
Testwork Results
A 50 kg sample of tailings from
- Approximately 0.8% Zn, 0.1% Pb, 0.2% Cu, 200 ppm Cobalt
- Approximately 40% pyrite.
Laboratory scale 'proof-of-concept' testwork was completed including flotation, thermal decomposition of pyrite, and leaching of kiln calcine. The overall results successfully achieved >90% conversion of the pyrite into pyrrhotite and elemental sulphur.
These results will be used to design an overall flowsheet for the treatment of the tailings as part of the final test work.
Next Steps
If the final test work results meet expectations, then further discussions concerning the next stages of technical cooperation will be held. Future collaboration may include larger-scale test work in parallel with potential commercial negotiations.
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About
Contact:
Chief Executive Officer
info@cobaltblueholdings.com
P: (02) 8287 0660
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