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MALI LITHIUM LIMITED - Corporate Spotlight

Mali Lithium Limited is developing the world class Goulamina Lithium Project in Mali,... Mali Lithium Limited is developing the world class Goulamina Lithium Project in Mali, West Africa. Goulamina is fully permitted and is one of the world’s largest uncommitted hard rock Lithium Reserves. The company is currently completing its Definitive Feasibility Study and has released the results of its Pre-Feasibility Study (PFS) on the project to the ASX on 4 July 2018. The Company also has a diversified commodity portfolio containing prospective gold tenements in southern Mali.More

Corporate Spotlight

Mali Lithium Limited is developing the world class Goulamina Lithium Project in Mali, West Africa. Goulamina is fully permitted and is one of the world’s largest uncommitted hard rock Lithium Reserves. The company will complete its final Feasibility Study in early 2020.
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Interview with Chris Evans, MD Mali Lithium

LITHIUM MINE TO MARKET PRESENTATION

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COMMENCES GOLD DRILLING

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Mali Lithium Commences Gold Drilling Program 

ASX Announcement 23 October 2019 


HIGHLIGHTS 

  • Drilling has commenced at MLL’s Koting gold prospect, which is part of the Massigui Project area in Mali 
  • Capital Drilling crew to complete 12 Reverse Circulation (RC) holes over two weeks 
  • Drilling and Exploration teams are staying at the nearby Morila mine 
  • Further drilling is then planned at MLL’s Goulamina Lithium Project


Mali Lithium Limited (ASX: MLL, Mali Lithium, or the Company) is pleased to confirm that the first drilling program at its Koting gold prospect, located within the Massigui Project area in Mali, has commenced.



Mali Lithium will undertake a two-week, 12-hole RC program at Koting, before moving the drill rig to its flagship Goulamina Lithium Project, for further infill and extensional drilling of the existing Mineral Resource. 



Click here to view the full announcement 

EXCELLENT RESULTS

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Excellent Metallurgical testwork results

ASX Announcement 17 September 2019 


Mali Lithium Limited (ASX: MLL, Mali Lithium, or the Company) is pleased to announce excellent progress in the metallurgical testwork currently underway and designed to optimise the results obtained from the Pre-Feasibility Study (PFS) published 4 July 2018. The final results of this program will confirm the process design selected as part of the Definitive Feasibility Study (DFS).


Results have exceeded expectations with 80% overall recovery achieved from a combination of High Pressure Grinding Rolls (HPGR) and flotation. Definitive flotation work and variability testwork is now underway. Actual plant performance is likely to be less than achieved in the lab but this is an excellent indication that the 70% recovery assumed in the PFS will be materially improved.


High Pressure Grinding Rolls (HPGR) 

A representative bulk sample of Goulamina ore at a grade of 1.7% Li2O was reduced to -4mm top size using High Pressure Grinding Rolls (HPGR) at the Nagrom laboratory in Perth, Western Australia. HPGRs are increasingly being used for crushing hard, abrasive rock such as pegmatite ores. HPGR comminution is a proven alternative to conventional crushing equipment, offering superior availability and reduced maintenance.


Liberation of spodumene particles is crucial to achieving high flotation recoveries. The HPGR crushing principle typically enhances liberation, as opposed to conventional cone crushing, by applying force to compress the ore into a small space. This selectively breaks particles at the mineral/reject interface thus allowing improved liberation and recovery. Results of HPGR tests at different pressing forces were better than expected resulting in evenly sized reduction to the required size of 4mm at low grinding pressures.


Flotation 

The HPGR crushed bulk sample at -4mm was then used for flotation testwork at Nagrom Laboratories after being ground to a P80 of 106 microns. The first stage of the program is designed to establish baseline parameters which will be used for optimisation, variability and de-risking further flotation testwork. Four different reagent schemes were tested and were informed by the rapidly evolving practice at Western Australian Spodumene operations. Table 1 below shows the improved results for flotation. Prior to flotation, the samples were treated by magnetic separation, mica removal and de-sliming. 


Table 1. Flotation and overall recoveries from latest testwork 


The flotation test results exceeded expectations, producing concentrate grades exceeding 6% Li₂O at 90% flotation recoveries in the rougher flotation stage, resulting in approximately 80% recovery overall. Overall recovery is calculated by subtracting the lithium lost in the preparation and beneficiation processes (flotation tailings, mica removal, slimes and magnetic separation) from the total lithium in the initial feed. These results allowed Reagent Scheme D to be established as the benchmark for the final stages of test work.


Testwork has proven that flotation efficiency is significantly improved when mica, magnetic material and slimes are removed efficiently prior to the flotation process. This is an improvement from previous testwork.


Final optimisation testwork in coming weeks will focus on further improvements to overall recovery by reducing lithium losses associated with mica removal, magnetic separation and desliming, thus ensuring results are repeatable and can be scaled up to the process plant with confidence. 


This testwork program has delivered a significant improvement on the 70% recovery achieved during the PFS and suggests that ore from the world class Goulamina deposit can be beneficiated to produce a high-grade (6% Li2O) product while achieving best in class recovery of contained lithium. High recoveries, low mica content and low Iron content will further improve the DFS valuation of the project. Thissuggested excellent metallurgical performance will lower the operating costs per tonne of concentrate produced and enhance returns from Goulamina, further setting it apart as a world-leading project.


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GOLD PORTFOLIO

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Mali Lithium to Drill Gold Portfolio Following Review

ASX Announcement 4 September 2019


Mali Lithium Limited (ASX:MLL, Mali Lithium, or the Company) has completed a full review of its African gold assets with a drill program likely to be commenced later in the year.


Mail Lithium has received a total of A$4.46 million in royalty revenues from its gold mining joint venture with Barrick Gold over the last 12 months, with the Company’s gold assets complementing its main focus on the world-class Goulamina Lithium Project. 


Mali Lithium managing director Chris Evans said with work progressing well on the Goulamina project, the Company was taking the opportunity to drive more value from its gold portfolio in parallel with development of its flagship Lithium project.


”The Mali Lithium Board and management team remain focused on completing the Definitive Feasibility Study (DFS) in the first quarter of 2020 for the development of our Goulamina Lithium Project but the current gold price has created an opportunity to consider options to further unlock the potential in our gold portfolio,” Mr Evans said..


“Our joint venture with Barrick Gold Corporation, one of the largest gold miners in the world, has already successfully produced 64,000 ounces of gold from our tenements in the last 12 months, and the A$4.46 million in royalties we have received has been a welcome inflow of revenue. 


“The elevated gold price has resulted in higher than anticipated revenues from the Barrick joint venture.


“Now that we have identified highly prospective drill targets in the review of our gold portfolio, it is an ideal time to capitalise on these high prices.” 


Mali Lithium had already planned to have a drill rig operating in Mali to conduct work at Goulamina later this year and will transport the rig to its gold assets when that work is complete.


“We will have a drill rig in Mali to generate technical information, infill and extend resources and reserves to enhance the Goulamina DFS later this year.


Given that the Company gold tenements are geographically close to Goulamina this is an ideal opportunity to design a program to test high priority drill targets. We look forward to proving drilling details to the market shortly.” Mr Evans said.



“The fact that we have previously mined and produced gold from some of these tenements with Barrick gives us confidence that there is more value to be realised.” 


Mali is the third largest gold producer in Africa and the Company’s gold tenements are in close proximity to a number of world-class gold operations operated by international companies, including Barrick, Resolute Mining and Anglo Gold Ashanti.


Click here to view the full announcement 

VIDEOS

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