Global Lithium Hit 75% Lithium Recovery for Manna

7 March 2024 14:21

Global Lithium Resources (ASX: GL1) has achieved remarkable lithium recoveries, reaching up to 75% Li2O, in ongoing optimisation test work at the Manna Lithium Project in Western Australia.

Going with the Lithium Flow

Ongoing test work aimed at optimising the Project’s Whole-of-Ore (WOO) flotation flowsheet has successfully increased recoveries from 70 per cent to 75 per cent by focusing magnetic separation and mica pre-flotation.

Latest results come from the testing of three composite ore samples, one high-grade, one low-grade and the third from a second ore type, with test work culminating in Li2O recoveries of 77 per cent for the first sample, 74 per cent for the second and 64 per cent for the third.

To date, a total of 66 flotation tests have been completed at the Project and are consistently able to produce spodumene concentrate with over 5.5 per cent Li2O, with a peak grade of 6.5 per cent Li 2O while keeping iron impurities between 0.4 – 0.8 per cent.

Room to Grow

Test work is currently ongoing, and the company believes that recoveries can be enhanced through reduced slimes losses, reprocessing of magnetic separation tails, and collaboration with reagent suppliers to optimise spodumene flotation circuit operating conditions.

Additionally, ongoing ore sorting trials indicate the potential to lower iron impurities, with recent results showing a 90% rejection rate while maintaining a 92% Li2O recovery rate, and the company plans to commence additional ore sorting trials shortly.

Looking Ahead

Global Lithium said that this increase in lithia recovery will have a positive impact on project economics at Manna.

“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,” Project Director Dr Tony Chamberlain said.

“Global Lithium will continue to progress the DFS and examine opportunities to further enhance the project economics through higher process recoveries and optimisation of the flowsheet to reduce overall capital and operating cost.”

GL1’s Australian Securities Exchange-listed share price is currently trading at $0.58 (2:10 pm UTC+ 8 hours).

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