Commodities, Exploration/Development, Lithium, News

Global Lithium eyes higher Manna production

Global Lithium Manna

Global Lithium Resources believes recent metallurgical testwork has the potential to boost spodumene concentrate production at its Manna lithium project in WA.

Testwork focussing on magnetic separation and mica pre-flotation stages has increased lithium oxide (Li2O) recoveries from 70 per cent to 75 per cent for spodumene composite ore samples.

A total of 66 flotation tests have been completed producing a spodumene product grading at 5.6–6.5 per cent Li2O.

Global Lithium is exploring additional testwork to unlock further recovery improvements via reduced slimes losses, reprocessing of magnetic separation tails, and engaging with reagent suppliers to optimise spodumene flotation circuit operating conditions.

By increasing Li2O recoveries, Global Lithium has the potential to boost Manna’s project economics.

“The metallurgical flowsheet for Manna is now well defined and the process team has been strongly focused on maximising lithia recovery,” Global Lithium project director Tony Chamberlain said.

“The additional five per cent spodumene recovery will significantly improve the overall project economics of the Manna project through extra spodumene concentrate production and additional revenue generated for the same plant throughput.

“The team believes there is further opportunity to increase lithia recovery through reducing slimes losses within the milling circuit. This will be examined over the coming months along with additional ore sorting trials.”

The effort to improve recoveries comes as Global Lithium aims to optimise Manna’s processing flowsheet and reduce the project’s overall capital and operating costs.

In a recent investor call, Global Lithium managing director Ron Mitchell explained how the company was in a strong position to weather the lithium winter, having already committed “most of the heavy spending” towards several important workstreams.

Mitchell said Global Lithium is an extended reporting season during the first half of 2024, with metallurgical testwork findings to soon be accompanied by more results from a recent 60,000m Manna drilling program.

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