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Highlights:

• An preliminary quantity of 88m³ of concentrated eluate, which is the lithium carbonate equal (LCE) of approx. one tonne, has been produced from the Firm´s DLE pilot plant in Copiapó, Chile over an working interval of 384 hours with 14 cycles accomplished

• This completes the primary stage of manufacturing from the DLE pilot plant

• Outcomes present the DLE adsorbent achieved a lithium restoration price of roughly 95% from the brine, with complete restoration (adsorption plus desorption) attaining roughly 88%

• Impurity rejection charges have been very excessive producing a low impurity eluate conducive to the downstream conversion course of.

• The concentrated eluate is being shipped in 4 batches to the amenities of Conductive Vitality in Chicago, USA, for conversion into battery grade lithium carbonate

Desk 1: Standing of concentrated eluate from pilot plant first stage manufacturing

• Conductive Vitality accomplished test-work on a 200L pattern of concentrated eluate shipped in Might 2024 to optimise the downstream course of earlier than receiving the bigger quantity shipments

• The conversion test-work produced a number of samples of lithium carbonate with 99.75% lithium carbonate purity demonstrating that the method achieves targets and is repeatable

• The result’s a primary affirmation {that a} course of has been developed that can effectively produce battery-grade lithium for the Laguna Verde challenge from pilot scale DLE eluate

• CleanTech Lithium continues to be a pacesetter in exploration and growth of DLE based mostly initiatives in Chile and this pilot scale manufacturing will present giant check samples of lithium carbonate to potential offtake companions looking for product qualification.

• Topic to the completion of the re-injection properly in September, the reserve report for Laguna Verde is scheduled to be accomplished by Montgomery and Associates in October 2024.

Steve Kesler, Govt Chairman and Interim CEO, of CleanTech Lithium PLC, mentioned:

“We’re very happy by these outcomes because it exhibits we are able to produce battery-grade lithium with low impurities from our Laguna Verde brine challenge. Working with our companions on the downstream course of, Ahead Water and Conductive Vitality, we are able to now exhibit the whole DLE course of from brine to closing lithium product.

“The optimised downstream course of will now be utilized to the preliminary quantity of 88m³ of concentrated eluate, or roughly 1 tonne of LCE, produced from the primary stage of manufacturing from our DLE pilot plant. This may produce vital check pattern volumes of battery-grade lithium carbonate for graduation of testing with potential strategic companions. That is vital while the Chilean authorities is reviewing the feasibility of lithium initiatives to determine essentially the most superior firms in Chile and if they’re to succeed in their goal of getting three to 4 new lithium initiatives in growth by 2026.”

Additional Data

Pilot Plant in Copiapó First Stage Manufacturing Accomplished

The Firm´s DLE pilot plant is in Copiapó, Chile, roughly 275km from Laguna Verde. The plant completed commissioning in late March 2024 and up till mid-June a complete quantity of 1196m³ of brine from the Laguna Verde challenge was processed within the plant with a complete of 14 cycles accomplished. Every cycle represents a quantity of brine being fed first by way of filtration to take away suspended solids, then into DLE columns that are stuffed with adsorbent designed to be selective for lithium molecules. Lithium, as lithium chloride, is adsorbed from the brine, earlier than desorption with water to create a purified lithium chloride eluate. A reverse osmosis (RO) unit on the DLE pilot plant then concentrates the eluate by extracting roughly 75% of the water to type a concentrated eluate.

Averaged throughout the 14 cycles, the restoration price achieved by adsorption of lithium by the adsorbent was 95% and the restoration price of desorption from the adsorbent was 93%. The entire restoration price averaged 88% and was extremely constant as proven in Determine 1. The temperature of the brine and desorption water, utilizing the common ambient temperature in Copiapó in the course of the March to June interval of operation, was within the vary of 20^oC to 25^oC, which didn’t considerably have an effect on the restoration achieved.

Determine 1: Pilot Plant Whole Restoration Fee

The eluate manufacturing price was comparatively secure after the preliminary ramp up interval attaining a mean of two.8 kg LCE per hour. The design of the plant is 1 tonne monthly of LCE based mostly on designed month-to-month working schedule of 360 hours. On account of funds and quantity issues, the plant was run for 384 hours for the primary stage of deliberate operation producing a complete of 1.085 tonnes of LCE as eluate. Based mostly on the hourly manufacturing price this met and exceeded the design capability of the plant.

Determine 2: Pilot Plant Manufacturing Fee (Kg LCE/hr in Eluate)

Selectivity of the adsorbent is one other key efficiency parameter for a DLE operation. DLE primarily acts as a purification stage, recovering lithium chloride from the brine while rejecting different impurities. For all the main ions within the brine, other than boron, the rejection price was very excessive as proven in Fig. 3 under. Extra cycles will additional validate this efficiency. The standard of the eluate was constant over the primary stage of manufacturing with the low stage of impurities facilitating downstream conversion.

Determine 3: DLE Efficiency – Rejection of Main Impurities

After completion of the DLE stage, the eluate is concentrated utilizing a reverse osmosis (RO) unit on the pilot plant. On completion of each levels the lithium grade within the purified lithium chloride eluate is over ten occasions increased than the feed brine. The concentrated eluate was then loaded right into a flexitank in a regular delivery container and transported to the port of Caldera for cargo to North America.

Downstream Processing into Battery Grade Lithium Carbonate: Take a look at-work Accomplished

For the conversion of the concentrated lithium chloride eluate into battery grade lithium carbonate, CleanTech Lithium has engaged a number one lithium processing firm, Conductive Vitality, based mostly in Alberta, Canada, which has amenities in Chicago, USA, with key downstream processing items proven in Determine 4 under. The standing of the concentrated eluate cargo is proven in Desk 1 with processing to begin in August 2024.

Determine 4: Conductive Vitality Carbonation Reactor Tank and Gear for Washing, Filtering & Drying

In Might 2024 CTL air-freighted a 200L pattern of concentrated eluate from the pilot plant to Conductive Vitality to undertake test-work to optimise the conversion course of. The method steps are proven in Determine 5, involving an additional stage of RO, earlier than utilizing Ahead Osmosis (FO) to realize a really excessive stage of focus. Ion alternate (IX) is used to take away calcium, magnesium, and boron. The ultimate steps are carbonation after which washing, filtration and drying to supply a battery grade product. Conductive Vitality´s method is to simplify the method that achieves most yield by minimizing course of steps and, the place losses happen, produce fluids which are simply recycled to additional maximize yield.

Determine 5: Conductive Vitality Conversion Course of

Reverse Osmosis and Ahead Osmosis

The rise in eluate and lithium focus within the R/O and F/O levels are proven in Desk 2 under. R/O is efficient for focus till Whole Dissolved Solids (TDS) attain the extent of roughly 60,000 – 70,000 TDS, after which it’s more and more power intensive and dear. F/O is very efficient in additional focus to the required lithium grade for carbonation, on this case 18,000mg Li/L (or 1.8% Lithium). The F/O unit is supplied by Ahead Water Know-how, one other Canadian firm based mostly in Ontario. F/O achieves a excessive focus issue with a lot decrease power use than the choice of utilizing a mechanical evaporator, whereas being extremely appropriate for utilising photo voltaic thermal because the power supply to energy the F/O course of.

Desk 2: Outcomes from focus of Laguna Verde eluate by way of R/O adopted by F/O

Ion Trade to Take away Impurities

Ion alternate (IX) was used for removing of calcium and magnesium, which achieved 85% and 87% reductions respectively. Whereas feed concentrations have been low, 100% of barium and manganese have been additionally eliminated in the identical course of. Further optimization is feasible with potential for additional calcium removing. Lithium loss was low at 3%.

Conductive then utilized its optimised IX for removing of boron. This was extremely efficient attaining >99.5% removing of boron. Nonetheless, there was a 22% lack of lithium to the regeneration fluid. This might be recaptured by recycling the regeneration fluid to the F/O feed which was not carried out for this small-scale test-work. The lithium loss from the boron IX is predicted to be decreased (recovered) to a gradual state loss price of about 3%.

Carbonation and Battery Grade Lithium Pattern

The carbonation test-work achieved an distinctive yield of 96% of the theoretical most. The ultimate product, after the wash process, was 99.75% lithium carbonate purity as proven in Desk 3. Additional optimisation of the washing stage is deliberate in an effort to cut back impurities to the best extent attainable and due to this fact maximise the worth of the battery grade product.

Desk 3: Course of test-work lithium carbonate pattern purity Fig. 6: Take a look at-work pattern

Further Operations

Laguna Verde Reserve Report Replace

The following stage of useful resource analysis on the Laguna Verde challenge is to supply an up to date JORC compliant useful resource and a reserve report based mostly on changing a portion of sources into reserves. The administration of the useful resource analysis programme and reserve report is led by Montgomery and Associates, a number one hydrogeology advisor with intensive expertise in useful resource analysis of lithium brine initiatives in Chile and Argentina. Reserve estimation will feed immediately into the Pre-Feasibility Examine which is focused for later this 12 months.

The reserve calculation requires the completion of pumping exams and a re-injection properly on the challenge which is scheduled for September 2024, when drilling tools may be re-mobilised after the present winter break in operations. Topic to the completion of the re-injection properly in September, the reserve report is scheduled to be accomplished by Montgomery and Associates in October 2024.

Competent Individuals

The next skilled acts as certified particular person, as outlined within the AIM Notice for Mining, Oil and Fuel Corporations (June 2009) and JORC Code (2012):

Marcelo Bravo: Chemical Engineer (Universidad Católica del Norte), has a Grasp’s Diploma in Engineering Sciences main in Mineral Processing, Universidad de Antofagasta. He at the moment works as a Senior Course of Consulting Engineer on the Advert-Infinitum firm. Mr Bravo has related expertise in researching and creating potassium, lithium carbonate, and photo voltaic evapo-concentration design processes in Chile, Argentina, and Bolivia. Mr Bravo, who has reviewed and accepted the knowledge contained within the chapters related to his experience contained on this announcement, is registered with No. 412 within the public registry of Competent Individuals in Mining Sources and Reserves per the Regulation of Individuals Competent and its Laws in drive in Chile. Mr Bravo has enough expertise related to the metallurgical exams and the kind of subsequent processing of the extracted brines into account and to the exercise being carried out to qualify as a reliable particular person, as outlined within the JORC Code. Mr Bravo consents to the inclusion within the press launch of the issues based mostly on his info within the type and context through which it seems.

The data communicated inside this announcement is deemed to represent inside info as stipulated below the Market Abuse Laws (EU) No 596/2014 which is a part of UK regulation by advantage of the European Union (Withdrawal) Act 2018. Upon publication of this announcement, this inside info is now thought of to be within the public area. The one that organized for the discharge of this announcement on behalf of the Firm was Gordon Stein, Director and CFO.

Beaumont Cornish Restricted (“Beaumont Cornish”) is the Firm’s Nominated Adviser and is authorised and controlled by the FCA. Beaumont Cornish’s tasks because the Firm’s Nominated Adviser, together with a duty to advise and information the Firm on its tasks below the AIM Guidelines for Corporations and AIM Guidelines for Nominated Advisers, are owed solely to the London Inventory Trade. Beaumont Cornish shouldn’t be performing for and won’t be accountable to every other individuals for offering protections afforded to prospects of Beaumont Cornish nor for advising them in relation to the proposed preparations described on this announcement or any matter referred to in it.

Notes

CleanTech Lithium (AIM:CTL, Frankfurt:T2N, OTCQX:CTLHF) is an exploration and growth firm advancing sustainable lithium initiatives in Chile for the clear power transition. Dedicated to net-zero, CleanTech Lithium‘s mission is to supply materials portions of sustainable battery grade lithium merchandise utilizing Direct Lithium Extraction expertise powered by renewable power. The Firm plans to be a number one provider of ‘inexperienced’ lithium to the EV and battery manufacturing market.

CleanTech Lithium has two key lithium initiatives in Chile, Laguna Verde and Viento Andino, and maintain licences in Llamara and Salar de Atacama, situated within the lithium triangle, a number one centre for battery grade lithium manufacturing. The 2 main initiatives: Laguna Verde and Viento Andino are located inside basins managed by the Firm, which affords vital potential growth and operational benefits. All 4 initiatives have direct entry to current infrastructure and renewable energy.

CleanTech Lithium is dedicated to utilizing renewable energy for processing and decreasing the environmental affect of its lithium manufacturing by utilising Direct Lithium Extraction with reinjection of spent brine. Direct Lithium Extraction is a transformative expertise which removes lithium from brine, with increased recoveries than typical extraction processes. The strategy presents brief growth lead occasions with no intensive website building or evaporation pond growth so there’s minimal water depletion from the aquifer. www.ctlithium.com

**ENDS**

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SOURCE: CleanTech Lithium plc

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