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- Castile Resources (CST) achieves ‘extremely high’ individual metal recovery rates from downstream processing of the bulk flotation concentrate at the Rover 1 project in NT
- Recovery rates from the bulk concentrate include 98 per cent gold, 99.4 per cent copper, and 99.1 per cent cobalt
- Bismuth recoveries were low, resulting in the metal no longer being pursued in the flowsheet as a by-product
- Work has commenced for the design and costing of a processing plant to support mining studies
- Shares are trading 2.86 per cent higher today at 18 cents each
Castile Resources (CST) has achieved ‘extremely high’ gold, copper and cobalt individual metal recovery rates from downstream processing of the bulk flotation concentrate.
The recoveries come from the Rover 1 project in the Northern Territory where Castile previously reported recovery rates of all the metals reporting to a single bulk concentrate.
The downstream processing method reportedly enables the production of direct metal onsite. Castile said this form of recovery reduces the environmental impact from subsequent transport and provides key products for future use in Australia.
Recovery rates from the bulk concentrate include 98 per cent gold, 99.4 per cent copper, and 99.1 per cent cobalt.
An estimated 21.4 per cent of the gold reports to simple gravity recovery while 72.4 per cent reports to the bulk concentrate.
Recovery of gold from the bulk concentrate is 98 per cent, resulting in an overall total gold recovery of 92.8 per cent.
With copper, 97.8 per cent reports to the bulk flotation concentrate.
Solution recovery recovered 98 per cent of copper, resulting in an overall copper recovery of 95.3 per cent.
Total cobalt discovery came in at 83 per cent while total magnetite was recovered at 68 per cent.
Work has commenced for the design and costing of a processing plant to support mining studies.
Recoveries of bismuth were low, resulting in the metal no longer being pursued in the flowsheet as a by-product.
Managing Director Mark Hepburn said the company has developed the best method for extraction.
“Our goal of finding the best method of extracting maximum value from each tonne that we mine has been achieved,” he said.
“As opposed to the traditional route of concentrate sales to overseas markets, the boutique scale of the project enables the application of site-based downstream processing to produce primary metals.
“This results in the maximisation of recovery of key metals and fast turnaround times in cashflows for the financial modelling in the pre-feasibility study.”
Shares were trading 2.86 per cent higher today at 18 cents each at 2:30 pm AEDT.
