Refinement work on a sub-sample delivered a vanadium pentoxide (V2O5) product with a purity in excess of 99.7%.
The V2O5 product came from an ammonium metavanadate precipitate that recovered over 98% of vanadium from a leach solution.
This high purity further confirms the suitability of Gabanintha vanadium product for the speciality chemical, battery and aeronautical industries.
Preliminary base metal recovery test work delivered highly encouraging flotation concentrates with a combined base metal content of 10% to 15%, containing up to 2.31% cobalt, 4.47% nickel and 9.50% copper.
This test work focused on the non-magnetic (tailings) fraction from the magnetic separation process.
Notably, significant scope exists to optimise the base metal recovery into a concentrate product.
TMT’s managing director Ian Prentice said: “Improvement on the already high purity V2O5 product following a simple refinement step underscores the very high quality of the World class Gabanintha deposit; whilst the ability to produce a high grade base metal concentrate from a the non-magnetic tailings stream has potential to be a significant bonus for the project.”
Work at the project continues
The company noted that the definitive feasibility study (DFS) is progressing well and remains on track for delivery in the June quarter of 2019.
Ongoing activities in support of the DFS include:
• Updating the global Mineral Resource, including the Indicated portion of the Resource;
• Revising the PFS open pit mine designs incorporating updated geotechnical data;
• Updating mine scheduling based on detailed geometallurgical data;
• Provide an updated ore reserve estimate within the expanded global Mineral Resource, and
• Provide revised capital and operating cost estimates to a DFS level of accuracy and an updated Project financial model.