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:: First PGM Project Moves Closer
Platinum Australia is confident it has developed an efficient platinum, palladium and gold recovery process after receiving preliminary results from its calcine-leach-metals recovery pilot plant testwork.
Results from initial 24-day test period showed an overall recovery of platinum (91.4%), palladium (92.4%) and gold (85.1%).
Overall gold recovery is expected to be more than 90% due to the barren solution's recycle from the ion exchange back to the leach-precipitation circuit.
Platinum Australia executive director John Lewins said the results were consistent with results from laboratory scale testwork, confirming its efficiency.
"The combination of the calcineleach process developed by Lonmin in conjunction with PLA has achieved a recovery of over 91% platinum/palladium/gold from a flotation concentrate," Lewins said.
"Based on a flotation recovery of approximately 88%, the overall recovery from plant feed to this product should be over 80%."
"This is comparable with recoveries achieved through the traditional smelting route for many of the South African ores."
Platinum Australia is in the midst of completing a bankable feasibility study on its Panton Project in Western Australia's Kimberley region.
Panton has an identified, resources of 4.5 million ounces, including a high grade resource of 10.1mt at 6.6 grams per tonne platinum group metal (PGM) plus gold containing 2moz.
The project is 100% owned by Platinum Australia and is secured by three granted mining leases.
Since acquiring the project in 2000, Platinum Australia has drilled more than 300 holes. This increased the resource bjr 387,000oz.
Resource estimates for the Panton Top Reef have been updated after results from a recent infill drilling program of six diamond holes were received.
This showed a 6% increase in grade and 5% decrease in tonnage leading to a marginal increase in contained ounces of PGM and gold in the reef.
In addition to the Panton Project, Platinum Australia is also developing the McIntosh, McGowan Bore, Loadstone Hill and the Imagi Well and Byro projects.
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