Mineral samples used in lithium-ion batteries
ion batteries
Source: Adobe Stock
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Lincoln Minerals Ltd (ASX:LML) has continued to prove the viability and strength of its Kookaburra Graphite Project in South Australia, with purification test work showing material from the project can reach the 99.95% TGC (total graphitic carbon) level required to make it battery-grade.

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The result was yielded from multiple tests undertaken at two independent laboratories in Australia, and without the use of hydrofluoric acid during the process.

The latter is expected to simplify the project’s development path and provide significant safety and environmental benefits.

Crucially, the purity levels reached in the testing indicate that graphite from Kookaburra will be suitable for lithium-ion battery anode applications.

Graphite concentrate samples grading 94.2% TGC on average were sent to Classifier Milling Systems in Canada for micronising and classification, with composite samples with a d80 of 35 microns were then prepared and distributed to the independent laboratories for advanced analysis.

Lincoln Minerals CEO Jonathon Trewartha said testing had underscored the value of Kookaburra, which is on South Australia’s Eyre Peninsula. “We are extremely pleased with these outstanding initial results, particularly the achievement of battery grade purity levels without the use of hydrofluoric acid,” he said.

“This not only reduces the cost and complexity typically associated with anode material production but also increases major safety and environmental benefits.”

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He continued: “These findings represent a major step forward in our Battery Anode Material Scoping Study and provide a strong technical foundation for the next phase of optimisation and product qualification.”

LML has been trading at 0.5 cents early in Thursday trade.

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