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Speewah PFS on track for King River

ASX-listed multi-commodity explorer, King River Resources, has provided a comprehensive update for its ongoing PFS studies at the Speewah specialty metals project in the Kimberley region of WA, saying that technical, marketing and permitting studies were progressing well.

Only last month, the company flagged the potential to further reduce the estimated capital cost of the giant Speewah project by USD$152m to USD$524m.

The biggest drivers of this notable cost reduction will be achieved by reducing the mining rates to correspond and align with the throughput capability of a more standard-sized, acid leaching plant circuit installation that is now envisaged for the project.

Metallurgical test work studies are continuing and are focussed on developing the simplest, highest recovery and most economical methods for generating the valuable vanadium pentoxide, titanium dioxide, iron oxide and high purity alumina products, management said.

King River also plans to reduce sulphuric acid consumption by optimising the beneficiation processes to liberate the magnetite ores that host the mineralisation from the waste rock materials.

Additionally, a new two-stage acid leaching process is also being contemplated by the company, that may further reduce future acid consumption volumes.

Ongoing met test work has also concentrated on chemical extraction techniques that aim to create high-purity products at the best recoveries and lowest base costs.

Management said that most components at the proposed Speewah project would have a modular construction, giving future flexibility to expand the tonnages mined and metals recovered once key infrastructure has been installed.

Fremantle-based Como Engineers have been appointed to complete the processing plant design and costings for the PFS report with this work well underway for completion towards the end of this year, King River said.

CSA Global has also come on board to complete the geological and mining studies for the Speewah project PFS.

In addition, complementary geotechnical, marketing, hydrological, environmental and Aboriginal heritage studies are continuing and will underpin those aspects of the comprehensive PFS document.

The company also recently completed some additional RC drilling over the Junction prospect at Speewah, where it was successful in defining extensions to identified mineralisation on its granted mining lease.

The expansions to the defined mineralisation will help expedite future development of the project, by building a greater critical mass of mineral resources at project start-up.    

Speewah currently holds a massive global resource of 4.7 billion tonnes grading 0.3% vanadium pentoxide, 3.3% titanium dioxide and 14.7% iron.

King River management said: “Ongoing technical studies and refinements to process routes continue to optimise metal recoveries and are pointing towards further potential reductions in operating and capital costs.”

“Recent success with close-spaced drilling on a section of our granted mining leases will also be most beneficial in the start-up phase of future operations.”

 

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