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#SVML Sovereign Metals LTD – Outstanding Battery Anode Material Produced
4th September 2024 / Leave a comment
Kasiya graphite concentrate confirmed to be an excellent feedstock for natural graphite anode materials suitable for battery production
· Kasiya natural graphite presents a unique, low-cost opportunity to develop lithium-ion battery supply chains outside of China
· Very high quality Coated Spherical Purified Graphite (CSPG) anode material produced from Kasiya graphite concentrate has performance characteristics comparable to the highest quality natural graphite battery material produced by dominant Chinese anode manufacturers
o Electrochemical testing achieved very high first cycle efficiencies of 94.2% to 95.8% supporting long battery life
o Excellent initial discharge capacities greater than 360mAh/g as required for highest quality natural graphite anode materials.
o Very low specific surface areas (known as BET) of ≤2.0m2/g minimising the loss of lithium in the first battery charging cycle
o Excellent tap densities of 1.11 to 1.18g/cm3 meaning higher electrical storage
· Outstanding anode material results are attributed to the unique geological setting of the highly weathered Kasiya orebody compared to fresh rock hosted graphite deposits, including:
o high purity of the natural flake,
o near perfect crystallinity, and
o very low levels of sulphur and other impurities.
· Further optimisation testwork to commence using additional concentrate being generated at pilot-scale facility in South Africa
· Results will form the basis for ongoing and future discussions with potential offtakers
Managing Director Frank Eagar commented: “These results confirm that Kasiya graphite concentrate will be an excellent anode material feedstock to the battery industry. Not only is the weathered, saprolite-hosted graphite easy to purify to very high-grades, the anode material produced meets the highest industry specifications. Along with the very low BET specific surface area and high tap densities (both resulting in excellent first cycle efficiencies and initial battery discharge capacities), Kasiya has the potential to become a dominant source of graphite supply ex-China. Combining these excellent results with one of the largest graphite resources globally, industry low operating costs and lowest global warming potential, Kasiya is presenting significant advantages over its graphite peers. We look forward to further testwork and market updates as we continue to develop Kasiya as a supplier of premium quality, cost competitive natural graphite concentrate.”
Classification 2.2: This announcement includes Inside Information
ENQUIRIES
Frank Eagar (South Africa/Malawi) +61(8) 9322 6322 |
Sam Cordin (Perth) |
Sapan Ghai (London)
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Nominated Adviser on AIM and Joint Broker |
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SP Angel Corporate Finance LLP |
+44 20 3470 0470 |
Ewan Leggat Charlie Bouverat |
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Joint Brokers |
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Stifel |
+44 20 7710 7600 |
Varun Talwar |
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Ashton Clanfield |
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Berenberg |
+44 20 3207 7800 |
Matthew Armitt |
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Jennifer Lee |
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Buchanan |
+ 44 20 7466 5000 |
Sovereign Metals Limited (ASX:SVM; AIM:SVML; OTCQX: SVMLF) (the Company or Sovereign) is very pleased to announce an update on the downstream testwork conducted at leading independent consultancy ProGraphite GmbH (ProGraphite) in Germany.
The test work program demonstrated that CSPG produced from Kasiya natural flake graphite has performance characteristics comparable to the leading Chinese natural graphite anode materials manufacturers such as BTR New Material Group (BTR).
Electrochemical testing of the CSPG samples at a leading German institute achieved first cycle efficiencies (FCE) of 94.2% to 95.8%, with results above 95% a key specification for highest quality natural graphite anode materials under the Chinese standard.
Following spheronisation and purification testwork1 which produced spherical graphite with very high purities of 99.99%, the purified spherical graphite (PSG) samples were pitch coated and carbonised to produce CSPG.
The coating process produced CSPG with very low BET specific surface area of 2.0m2/g and lower and high tap densities of 1.11-1.18g/cm3 (Table 1).
A low specific surface area is required for anode materials to minimise the loss of lithium in forming a secondary protective coating on the anode material known as the Solid Electrolyte Interphase (SEI). The pitch coating process also assists in increasing the density of the anode material as measured by the tap density – a higher density assists in storing more electrical energy in the lithium-ion battery.
Table 1: CSPG Results |
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CSPG Sample |
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Sample |
Units |
1 |
2 |
3 |
D10 |
[µm] |
11.05 |
11.08 |
14.86 |
D50 |
[µm] |
17.46 |
17.27 |
23.71 |
D90 |
[µm] |
26.75 |
27.5 |
36.72 |
Tap Density |
[g/cm3] |
1.11 |
1.12 |
1.18 |
BET |
[m2/g] |
1.6 |
2.0 |
1.4 |
Electrochemical testing of the CSPG samples at a leading German institute achieved FCE of 94.2% to 95.8%, with results above 95% a key specification for highest quality natural graphite anode materials under the Chinese standard. A very high FCE minimises lithium losses in the initial formation cycles of a lithium-ion battery, supporting battery life. Kasiya CSPG also met the criteria for an initial discharge capacity of more than 360mAh/g (ampere-hours per gram) for highest quality anode materials, with initial capacities of 362-366mAh/g. These results will be used to fast-track discussions with potential offtakers.
Table 2: Electrochemical Results – China CSPG Standard |
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CSPG Sample |
China Standard GB/T-24533-2019
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1 |
2 |
3 |
Grade I |
Grade II |
Grade III |
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First Cycle Efficiency |
[%] |
95.8 |
94.2 |
95.8 |
≥95 |
≥93 |
≥91 |
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Initial Capacity |
[mAh/g] |
362 |
364 |
366 |
≥360 |
≥360 |
≥345 |
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Furthermore, the testwork demonstrated that CSPG produced from Kasiya natural flake graphite has initial performance characteristics comparable to the leading Chinese natural graphite anode materials manufacturers such as BTR. BTR has a 20-year track record in the production of lithium-ion battery anode materials, is a dominant player in the market and has recently concluded anode material offtake agreements with global automotive companies including Ford. BTR’s highest specification CSPG materials, that have low swelling, long cycle life, good processability and outstanding electrochemical performance include their GSN17 and LSG17 products (with D50 of 17.0+/- 1.5μm).
Table 3: Electrochemical Results – BTR CSPG products |
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CSPG Sample |
BTR3
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1 |
2 |
GSN 17 |
LSG 17 |
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First Cycle Efficiency |
[%] |
95.8 |
94.2 |
≥95 |
≥94 |
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Initial Capacity |
[mAh/g] |
362 |
364 |
≥360 |
≥355 |
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D50 |
[μm] |
17.5 |
17.3 |
17.0+/- 1.5 |
17.0+/- 1.5 |
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In December 2023, China imposed trade restrictions on graphite that required producers to apply to the government for permits to export high-grade graphite materials and related products. Given China’s dominance of natural graphite and graphite derived products such as CSPG, global EV production and Net Zero ambitions could be negatively impacted given the lack of anode industry development ex-China. In May 2024, the US government imposed a new 25% tariff on natural graphite from China, as part of a broader initiative that included an increase of tariffs on EVs and lithium-ion batteries.
High performance CSPG materials manufactured from Kasiya natural graphite present an opportunity for development of ex-China supply chains for battery anode materials. Sovereign believes that the outstanding electrochemical results for Kasiya CSPG are as a result of the unique geological setting of the Kasiya orebody. The near perfect crystallinity i.e. fully ordered graphite resulting from the very high metamorphic grade of the underlying host rock (paragneiss metamorphosed to granulite facies) and the high purity of the natural flake being assisted by the highly weathered nature of the ore.2 This is as opposed to fresh rock hosted graphite deposits which generally have much higher impurity levels including sulphur, which negatively impacts electrochemical performance. The very low sulphur profile of Kasiya graphite is due to the fact that the primary sulphide minerals have been altered to sulphates by the intense weathering. The sulphates are water soluble and are leached from the ore during weathering.
Further optimisation testwork for anode materials is planned, using additional graphite concentrate currently being generated at pilot-scale in South Africa. This material will also be used to provide offtaker evaluation samples.
A program for assessing Kasiya concentrate for traditional refractories and foundry applications has also been developed. The coarse component of the pilot plant concentrate will be used for this testwork program.
1 Refer to ASX Announcement “Downstream Testwork Demonstrates High Quality Graphite” dated 15 May 2024
2 Refer to ASX Announcement “Kasiya Graphite Shows Excellent Suitability For Use In Lithium Ion Batteries” dated 8 June 2023
3 BTR anode material specs taken from this webpage: https://www.btrchina.com/en/NegativeProducts/info.aspx?itemid=1069
Competent Person Statement
The information in this report that relates to Lithium-Ion Battery Testwork is based on information compiled by Dr Surinder Ghag, PhD., B. Eng, MBA, M.Sc., who is a Member of the Australasian Institute of Mining and Metallurgy (MAusIMM). Dr Ghag is engaged as a consultant by Sovereign Metals Limited. Dr Ghag has sufficient experience, which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking, to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Dr Ghag consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
The information in this report that relates to Exploration Results (table 1) is based on information compiled by Mr Samuel Moyle, a Competent Person who is a member of The Australasian Institute of Mining and Metallurgy (AusIMM). Mr Moyle is the Exploration Manager of Sovereign Metals Limited and a holder of ordinary shares and unlisted performance rights in Sovereign Metals Limited. Mr Moyle has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity being undertaken, to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Mr Moyle consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
Forward Looking Statement
This release may include forward-looking statements, which may be identified by words such as “expects”, “anticipates”, “believes”, “projects”, “plans”, and similar expressions. These forward-looking statements are based on Sovereign’s expectations and beliefs concerning future events. Forward looking statements are necessarily subject to risks, uncertainties and other factors, many of which are outside the control of Sovereign, which could cause actual results to differ materially from such statements. There can be no assurance that forward-looking statements will prove to be correct. Sovereign makes no undertaking to subsequently update or revise the forward-looking statements made in this release, to reflect the circumstances or events after the date of that release.
The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the Market Abuse Regulations (EU) No. 596/2014 as it forms part of UK domestic law by virtue of the European Union (Withdrawal) Act 2018 (‘MAR’). Upon the publication of this announcement via Regulatory Information Service (‘RIS’), this inside information is now considered to be in the public domain.
Appendix 1: JORC Code, 2012 Edition – Table 1
SECTION 1 – SAMPLING TECHNIQUES AND DATA
Criteria |
JORC Code explanation |
Commentary |
Sampling Techniques |
Nature and quality of sampling (e.g. cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling.
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Metallurgical Composite Sample: The sample was a composite of 24 Hand Auger (HA) and Push Tube (PT) holes drilled in 2022 in the Kingfisher pit. All drilling samples within the pit shell were added to the composite resulting in a sample of 2,498kg. Specifically, the composite sample consisted of selected rutile mineralised zones from holes, NSHA0009, 0010, 0056, 0060, 0061, 0074, 0119, 0311, 0343, 0344, 0345, 0350 and NSPT 0011, 0013, 0014, 0015, 0017, 0020, 0021, 0023, 0024, 0025, 0026, 0027. The following workflow was used to generate a pre-concentrate graphite feed at AML: · Wet screen at 2mm to remove oversize · Two stage cyclone separation at a cut size of 45µm to remove -45µm material · Pass +45µm -2mm (sand) fraction through Up Current Classifier (UCC) · Pass UCC O/F through cyclone at cut point of 45µm · Pass UCC O/F cyclone U/F (fine) over MG12 Mineral Technologies Spiral · Pass UCC U/F (coarse) over MG12 Mineral Technologies Spiral · Spiral cons are combined for further processing. Fine and coarse gravity tailing samples contain approximately 75%-80% of the graphite present in the feed sample. The majority of the graphite lost is contained in the -45µm fines. |
Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used.
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Placer Consulting (Placer) Resource Geologists have reviewed Standard Operating Procedures (SOPs) for the collection of HA and PT drill samples and found them to be fit for purpose. Drilling and sampling activities are supervised by a suitably qualified Company geologist who is present at all times. All bulk 1-metre drill samples are geologically logged by the geologist at the drill site. The primary metallurgical composite sample is considered representative for this style of mineralisation. |
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Aspects of the determination of mineralisation that are Material to the Public Report. In cases where ‘industry standard’ work has been done this would be relatively simple (e.g. ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (e.g. submarine nodules) may warrant disclosure of detailed information.
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HA drilling was used to obtain 1-metre samples. The bulk metallurgical sample was a composite of selected samples from routine resource drilling. Existing rutile and graphite exploration results were used to determine the 1-metre intervals suitable to contribute to the two bulk sample composites. |
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Drilling Techniques |
Drill type (e.g. core, reverse circulation, open‐hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (e.g. core diameter, triple or standard tube, depth of diamond tails, face‐sampling bit or other type, whether core is oriented and if so, by what method, etc).
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Hand-auger drilling is completed with 75mm diameter enclosed spiral bits with 1-metrelong steel rods. Each 1m of drill sample is collected into separate sample bags and set aside. The auger bits and flights are cleaned between each metre of sampling to avoid contamination. Placer has reviewed SOPs for hand-auger drilling and found them to be fit for purpose and support the resource classifications as applied to the MRE. |
Drill Sample Recovery |
Method of recording and assessing core and chip sample recoveries and results assessed.
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The configuration of drilling and nature of materials encountered results in negligible sample loss or contamination. Samples are assessed visually for recoveries. Overall, recovery is good. Drilling is ceased when recoveries become poor generally once the water table has been encountered. Auger drilling samples are actively assessed by the geologist onsite for recoveries and contamination. |
Measures taken to maximise sample recovery and ensure representative nature of the samples.
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The Company’s trained geologists supervise auger drilling on a 1 team 1 geologist basis and are responsible for monitoring all aspects of the drilling and sampling process.
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Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material.
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No bias related to preferential loss or gain of different materials has occurred. |
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Logging |
Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation mining studies and metallurgical studies.
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All individual 1-metre auger intervals are geologically logged, recording relevant data to a set template using company codes.
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Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc.) photography.
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All logging includes lithological features and estimates of basic mineralogy. Logging is generally qualitative. |
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The total length and percentage of the relevant intersection logged
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100% of samples are geologically logged. |
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Sub-sampling techniques and sample preparation |
If core, whether cut or sawn and whether quarter, half or all core taken.
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Not applicable – no core drilling conducted.
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If non-core, whether riffled, tube sampled, rotary split, etc. and whether sampled wet or dry. |
Primary individual 1-metre samples from all HA and PT holes drilled are sun dried, homogenised and riffle split.
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For all sample types, the nature, quality and appropriateness of the sample preparation technique.
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Metallurgical Composite Sample: 1-metre intervals selected for the 2,498kg metallurgical sample were divided into weathering units. MOTT and PSAP material were combined and homogenised in preparation for dispatch to Australian laboratory Intertek for TGC assay. Per Australian import quarantine requirements the contributing SOIL/FERP material from within 2m of surface was kept separate to undergo quarantine heat treatment at Intertek Laboratory on arrival into Australia. The two sub samples (SOIL/FERP and MOTT/PSAP) were then dispatched from Intertek to AML Laboratory (AML). AML sub-sampled and assayed the individual lithologies prior to combining and homogenising the sample in preparation for test-work. |
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Quality control procedures adopted for all sub-sampling stages to maximise representivity of samples.
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The sample preparation techniques and QA/QC protocols are considered appropriate for the nature of this test-work.
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Measures taken to ensure that the sampling is representative of the in situ material collected, including for instance results for field duplicate/second-half sampling.
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The sampling best represents the material in situ. |
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Whether sample sizes are appropriate to the grain size of the material being sampled.
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The sample size is considered appropriate for the nature of the test-work. |
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Quality of assay data and laboratory tests |
The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total. |
Metallurgical Composite Sample: The following workflow was used to generate a graphite product; o Coarse and fine rougher graphite flotation o Polishing grind of coarse and fine rougher graphite concentrate o Cleaner flotation of coarse and fine graphite o Cleaner concentrate sizing at 180µm o Regrind of separate +180µm/-180µm fractions o Three stage recleaner flotation of +180µm/-180µm fractions
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For geophysical tools, spectrometers, handheld XRF instruments, etc., the parameters used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc.
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Acceptable levels of accuracy and precision have been established. No handheld methods are used for quantitative determination.
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Nature of quality control procedures adopted (e.g. standards, blanks, duplicate, external laboratory checks) and whether acceptable levels of accuracy (i.e. lack of bias) and precision have been established.
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Acceptable levels of accuracy and precision have been established in the preparation of the bulk sample composites. |
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Verification of sampling & assaying |
The verification of significant intersections by either independent or alternative company personnel.
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No drilling intersections are being reported. |
The use of twinned holes.
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No twin holes completed in this program.
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Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols. |
All data was collected initially on paper logging sheets and codified to the Company’s templates. This data was hand entered to spreadsheets and validated by Company geologists.
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Discuss any adjustment to assay data.
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No adjustment to assay data has been made.
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Location of data points |
Accuracy and quality of surveys used to locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation.
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A Trimble R2 Differential GPS is used to pick up the collars. Daily capture at a registered reference marker ensures equipment remains in calibration. No downhole surveying is completed. Given the vertical nature and shallow depths of the holes, drill hole deviation is not considered to significantly affect the downhole location of samples. |
Specification of the grid system used. |
WGS84 UTM Zone 36 South. |
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Quality and adequacy of topographic control. |
DGPS pickups are considered to be high quality topographic control measures. |
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Data spacing & distribution |
Data spacing for reporting of Exploration Results. |
Metallurgical Composite Sample: The hand-auger holes contributing to this metallurgical were selected from pit area Kingfisher and broadly represent early years of mining as contemplated in the PFS (Approximately the first three years).
It is deemed that these holes should be broadly representative of the mineralisation style in the general area.
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Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied. |
Not applicable, no Mineral Resource or Ore Reserve estimations are covered by new data in this report. |
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Whether sample compositing has been applied. |
Metallurgical Composite Sample: The sample was composited as described under Sampling Techniques in this Table.
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Orientation of data in relation to geological structure |
Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known considering the deposit type
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No bias attributable to orientation of sampling has been identified. |
If the relationship between the drilling orientation and the orientation of key mineralised structures is considered to have introduced a sampling bias, this should be assessed and reported if material.
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All holes were drilled vertically as the nature of the mineralisation is horizontal. No bias attributable to orientation of drilling has been identified. |
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Sample security |
The measures taken to ensure sample security |
Samples are stored in secure storage from the time of drilling, through gathering, compositing and analysis. The samples are sealed as soon as site preparation is complete.
A reputable international transport company with shipment tracking enables a chain of custody to be maintained while the samples move from Malawi to Australia or Malawi to Johannesburg. Samples are again securely stored once they arrive and are processed at Australian laboratories. A reputable domestic courier company manages the movement of samples within Perth, Australia.
At each point of the sample workflow the samples are inspected by a company representative to monitor sample condition. Each laboratory confirms the integrity of the samples upon receipt. |
Audits or reviews |
The results of any audits or reviews of sampling techniques and data
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It is considered by the Company that industry best practice methods have been employed at all stages of the exploration.
Malawi Field and Laboratory visits have been completed by Richard Stockwell in May 2022. A high standard of operation, procedure and personnel was observed and reported.
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SECTION 2 – REPORTING OF EXPLORATION RESULTS
Criteria |
Explanation |
Commentary |
Mineral tenement & land tenure status |
Type, reference name/number, location and ownership including agreements or material issues with third parties such as joint ventures, partnerships, overriding royalties, native title interests, historical sites, wilderness or national park and environment settings. |
The Company owns 100% of the following Exploration Licences (ELs) under the Mines and Minerals Act 2019 (Malawi), held in the Company’s wholly-owned, Malawi-registered subsidiaries: EL0609, EL0582, EL0492, EL0528, EL0545, EL0561, EL0657 and EL0710. A 5% royalty is payable to the government upon mining and a 2% of net profit royalty is payable to the original project vendor. No significant native vegetation or reserves exist in the area. The region is intensively cultivated for agricultural crops. |
The security of the tenure held at the time of reporting along with any known impediments to obtaining a licence to operate in the area. |
The tenements are in good standing and no known impediments to exploration or mining exist. |
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Exploration done by other parties
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Acknowledgement and appraisal of exploration by other parties. |
Sovereign Metals Ltd is a first-mover in the discovery and definition of residual rutile and graphite deposits in Malawi. |
Geology |
Deposit type, geological setting and style of mineralisation |
The rutile deposit type is considered a residual placer formed by the intense weathering of rutile-rich basement paragneisses and variable enrichment by eluvial processes. Rutile occurs in a mostly topographically flat area west of Malawi’s capital, known as the Lilongwe Plain, where a deep tropical weathering profile is preserved. A typical profile from top to base is generally soil (“SOIL” 0-1m) ferruginous pedolith (“FERP”, 1-4m), mottled zone (“MOTT”, 4-7m), pallid saprolite (“PSAP”, 7-9m), saprolite (“SAPL”, 9-25m), saprock (“SAPR”, 25-35m) and fresh rock (“FRESH” >35m). The low-grade graphite mineralisation occurs as multiple bands of graphite gneisses, hosted within a broader Proterozoic paragneiss package. In the Kasiya areas specifically, the preserved weathering profile hosts significant vertical thicknesses from near surface of graphite mineralisation. |
Drill hole information |
A summary of all information material to the understanding of the exploration results including a tabulation of the following information for all Material drill holes: easting and northings of the drill hole collar; elevation or RL (Reduced Level-elevation above sea level in metres of the drill hole collar); dip and azimuth of the hole; down hole length and interception depth; and hole length |
All intercepts relating to the Kasiya Deposit have been included in public releases during each phase of exploration and in this report. Releases included all collar and composite data and these can be viewed on the Company website. There are no further drill hole results that are considered material to the understanding of the exploration results. Identification of the broad zone of mineralisation is made via multiple intersections of drill holes and to list them all would not give the reader any further clarification of the distribution of mineralisation throughout the deposit.
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If the exclusion of this information is justified on the basis that the information is not Material and this exclusion does not detract from the understanding of the report, the Competent Person should clearly explain why this is the case |
No information has been excluded. |
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Data aggregation methods |
In reporting Exploration Results, weighting averaging techniques, maximum and/or minimum grade truncations (e.g. cutting of high-grades) and cut-off grades are usually Material and should be stated. |
No data aggregation was required. |
Where aggregate intercepts incorporate short lengths of high-grade results and longer lengths of low grade results, the procedure used for such aggregation should be stated and some typical examples of such aggregations should be shown in detail. |
No data aggregation was required. |
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The assumptions used for any reporting of metal equivalent values should be clearly stated. |
Not applicable |
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Relationship between mineralisation widths & intercept lengths |
These relationships are particularly important in the reporting of Exploration Results. |
The mineralisation has been released by weathering of the underlying, layered gneissic bedrock that broadly trends NE-SW at Kasiya North and N-S at Kasiya South. It lies in a laterally extensive superficial blanket with high-grade zones reflecting the broad bedrock strike orientation of ~045° in the North of Kasiya and 360° in the South of Kasiya. No drilling intercepts are being reported. |
If the geometry of the mineralisation with respect to the drill hole angle is known, its nature should be reported. |
The mineralisation is laterally extensive where the entire weathering profile is preserved and not significantly eroded. Minor removal of the mineralised profile has occurred where alluvial channels cut the surface of the deposit. These areas are adequately defined by the drilling pattern and topographical control for the resource estimate. |
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If it is not known and only the down hole lengths are reported, there should be a clear statement to this effect (e.g. ‘down hole length, true width not known’. |
No drilling intercepts are being reported. |
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Diagrams |
Appropriate maps and sections (with scales) and tabulations of intercepts should be included for any significant discovery being reported. These should include, but not be limited to a plan view of the drill collar locations and appropriate sectional views. |
Refer to figures in previous releases. These are accessible on the Company’s webpage. |
Balanced reporting |
Where comprehensive reporting of all Exploration Results is not practicable, representative reporting of both low and high-grades and/or widths should be practiced to avoid misleading reporting of exploration results. |
All results are included in this report and in previous releases. These are accessible on the Company’s webpage. |
Other substantive exploration data |
Other exploration data, if meaningful and material, should be reported including (but not limited to: geological observations; geophysical survey results; geochemical survey results; bulk samples – size and method of treatment; metallurgical test results; bulk density, groundwater, geotechnical and rock characteristics; potential deleterious or contaminating substances. |
Limited lateritic duricrust has been variably developed at Kasiya, as is customary in tropical highland areas subjected to seasonal wet/dry cycles. Lithological logs record drilling refusal in just under 2% of the HA/PT drill database. No drilling refusal was recorded above the saprock interface by AC drilling. Sample quality (representivity) is established by geostatistical analysis of comparable sample intervals.
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Further work |
The nature and scale of planned further work (e.g. test for lateral extensions or depth extensions or large-scale step-out drilling). |
The Company is currently in a project optimisation phase with various work programs underway. |
Diagrams clearly highlighting the areas of possible extensions, including the main geological interpretations and future drilling areas, provided this information is not commercially sensitive. |
Refer to diagrams in previous releases. These are accessible on the Company’s webpage. |
#SVML Sovereign Metals LTD – Dry Mining Trial Successfully Completed
25th July 2024 / Leave a comment
DRY MINING TRIAL SUCCESSFULLY COMPLETED AT PILOT PHASE TEST PIT
· Pilot Phase dry mining trial confirms Kasiya can be efficiently mined using standard mobile excavators and trucks, demonstrating operational alternatives as part of ongoing PFS Optimisation Study
· Test pit mined as planned and on schedule to a depth of 20 metres, excavating approximately 170,000 bench cubic metres
· Simple and efficient dry mining undertaken with free-dig and soft, friable nature of the Kasiya orebody confirming no drilling or blasting required for excavation
· Ore extracted with zero strip ratio successfully stockpiled with no requirement to crush or grind prior to use as processing plant feed
· Hydraulic mining trials to begin in coming weeks with six million litre water storage pond currently filled to 80% capacity
· Pilot Phase continues to progress as part of ongoing PFS Optimisation Study with oversight from Sovereign-Rio Tinto Technical Committee·
Classification 2.2: This announcement includes Inside Information
Figure 1: Kasiya Pilot Phase Test Pit mined to 20 metres depth
Sovereign Metals Limited (ASX: SVM; AIM: SVML; OTCQX: SVMLF) (Sovereign or the Company) is pleased to announce that the dry mining trial is now complete with a test pit successfully excavated as part of the ongoing Pilot Mining and Land Rehabilitation Program (Pilot Phase) at the Company’s Kasiya Rutile-Graphite Project (Kasiya) in Malawi.
The test pit covers the planned area of 120 metres by 110 metres and has been excavated to a depth of 20 metres through the weathered ore at Kasiya. This confirms Kasiya ore can be efficiently mined using conventional dry-mining techniques and a simple mobile excavator fleet. The pit is accessible through a 10-metre-wide ramp constructed at appropriate geotechnical angles.
Managing Director, Frank Eagar commented: “Completion of the test pit at this scale marks a significant achievement. The mining, hydrology and geotechnical data collected throughout is invaluable in our understanding of the orebody and the simplicity of a potential dry-mining operation at Kasiya. We now look forward to the next steps of the pilot phase including the hydraulic mining trial, cyclone separation of ore, backfilling of test pits and soil rehabilitation.”
For the test pit, the dry mining fleet consisted of four excavators, 20 trucks and a support fleet including two bulldozers and a motor grader. The saprolite-hosted mineralisation at Kasiya is largely homogenous and has relatively consistent physical properties throughout the 1.8 billion tonnes Mineral Resource Estimate. Data collected from the pilot phase confirmed that no drilling, blasting, crushing, grinding or milling will be required prior to stockpiling material for processing into rutile and graphite products; an indication of potentially lower mining costs and a lower carbon footprint comparable to hard rock deposits.
Figure 2: Kasiya mining and front-end processing vs. hard rock peers
Figures 3 & 4: Simple excavator fleet mining the test pit
Approximately 170,000 bench cubic metres of material has been mined as part of the test-pit program. Steady-state operations envisage 24 million tonnes of material being mined annually. The test pit material will be processed through cyclones on-site for deposition testwork.
Figure 5: Dry mining plant feed stockpiled without any crushing or grinding
Figure 6: Pilot Phase Water Storage Pond almost at capacity with rehabilitation demonstration pits in background
The main pit will be backfilled with dry material, while material from hydraulic mining will be used to fill rehabilitation pits as part of the rehabilitation phase.
A temporary water storage pond has been constructed and sealed using natural clay from excavated material, minimising the use of conventional plastic lining. The pond is being filled via eight boreholes delivering water to site and is nearing its capacity of six million litres. Water from the storage pond will initially be used for the hydraulic mining stage.
Figure 7: Pilot Phase Site end of July 2024
Background to the Pilot Phase
The Pilot Phase is a critical part of Kasiya’s optimisation study; empirical data generated from the Pilot Phase will determine optimal project excavation, material handling, processing, backfilling and rehabilitation approaches. The Pilot Phase is being undertaken on a 9.9-hectare site and includes the following activities:
1. Test Pit: A test pit of 120m by 110m excavated to a depth of 20m, allowing optimisation of hydraulic and dry mining excavation methods.
2. Stockpiles: The excavated material will be temporarily stored in 4 stockpiles, namely all dry mining material, wet slimes (in a pond) and two sizes of sand fractions from the hydraulic mining.
3. Backfilling and Grading: The material will be placed back into the pit, and all areas will be graded.
4. Rehabilitation Demonstration: Sovereign will construct eight small rehabilitation demonstration pits covering a combined area of 100m by 130m. These will be used for water storage, excavated material storage, and demonstration of multiple rehabilitation approaches.
5. Temporary Laydown Areas: Four areas will be used as temporary laydown areas, offices, and associated infrastructure.
6. Communication: The Pilot Phase will be an educational opportunity for Project stakeholders. Sovereign will undertake a series of stakeholder visits and consultations for this purpose.
Sovereign’s objective is to restore land after mining to conditions that achieve the same or better agricultural yields than existing land uses and crop yields. The Pilot Phase will demonstrate to local communities the successful rehabilitation of land for agricultural use post-mining; land rehabilitation will form an integral component of the ongoing optimisation study. Results will also allow Sovereign to determine optimal excavation and backfill approaches, providing critical information for the upcoming Definitive Feasibility Study.
ENQUIRIES
Frank Eagar (South Africa/Malawi) +27 21 065 1890 |
Sam Cordin (Perth) +61(8) 9322 6322 |
Sapan Ghai (London) +44 207 478 3900
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Nominated Adviser on AIM and Joint Broker |
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SP Angel Corporate Finance LLP |
+44 20 3470 0470 |
Ewan Leggat Charlie Bouverat |
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Joint Brokers |
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Stifel |
+44 20 7710 7600 |
Varun Talwar |
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Ashton Clanfield |
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Berenberg |
+44 20 3207 7800 |
Matthew Armitt |
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Jennifer Lee |
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Buchanan |
+ 44 20 7466 5000 |
Competent Person Statement
The information in this announcement that relates to the Mineral Resource Estimate is extracted from an announcement dated 5 April 2023 entitled ‘Kasiya Indicated Resource Increased by over 80%’ which is available to view at www.sovereignmetals.com.au and is based on, and fairly represents information compiled by Mr Richard Stockwell, a Competent Person, who is a fellow of the Australian Institute of Geoscientists (AIG). Mr Stockwell is a principal of Placer Consulting Pty Ltd, an independent consulting company. Sovereign confirms that a) it is not aware of any new information or data that materially affects the information included in the original announcement; b) all material assumptions included in the original announcement continue to apply and have not materially changed; and c) the form and context in which the relevant Competent Persons’ findings are presented in this announcement have not been materially changed from the original announcement.
Kasiya Total Indicated + Inferred Mineral Resource Estimate at 0.7% rutile cut-off grade |
|||||
Classification |
Resource |
Rutile Grade |
Contained Rutile |
Graphite Grade (TGC) (%) |
Contained Graphite |
Indicated |
1,200 |
1.0% |
12.2 |
1.5% |
18.0 |
Inferred |
609 |
0.9% |
5.7 |
1.1% |
6.5 |
Total |
1,809 |
1.0% |
17.9 |
1.4% |
24.4 |
Forward Looking Statement
This release may include forward-looking statements, which may be identified by words such as “expects”, “anticipates”, “believes”, “projects”, “plans”, and similar expressions. These forward-looking statements are based on Sovereign’s expectations and beliefs concerning future events. Forward looking statements are necessarily subject to risks, uncertainties and other factors, many of which are outside the control of Sovereign, which could cause actual results to differ materially from such statements. There can be no assurance that forward-looking statements will prove to be correct. Sovereign makes no undertaking to subsequently update or revise the forward-looking statements made in this release, to reflect the circumstances or events after the date of that release.
The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the Market Abuse Regulations (EU) No. 596/2014 as it forms part of UK domestic law by virtue of the European Union (Withdrawal) Act 2018 (‘MAR’). Upon the publication of this announcement via Regulatory Information Service (‘RIS’), this inside information is now considered to be in the public domain.
#SVML Sovereign Metals Ltd – Kasiya Optimisation Advances to Pilot Phase
22nd May 2024 / Leave a comment
Sovereign Metals #SVML – KASIYA OPTIMISATION ADVANCES TO PILOT PHASE
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Sovereign to immediately commence a pilot mining and land rehabilitation program (“Pilot Phase”) at Kasiya as part of the ongoing Optimisation Study |
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Empirical data generated from the Pilot Phase will assist towards determining optimal excavation, material handling, processing, backfilling and rehabilitation approaches |
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Sovereign will excavate approximately 150,000 bench cubic metres of ore from a test pit over a three-month period using a combination of dry and hydraulic mining techniques |
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Excavated material will be processed on-site and at Sovereign’s laboratory in Malawi and will also provide additional bulk samples for graphite product qualification |
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The test pit will be backfilled, and multiple rehabilitation strategies will be implemented to demonstrate successful restoration of agricultural land |
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Demonstrates strong support for mining projects in Malawi with all required approvals and community permissions for the Pilot Phase obtained within three months |
Figure 1: Natural concentration of heavy minerals at surface at Kasiya (Source: C12 Consultants)
Managing Director Frank Eagar commented: “Advancing to a Pilot Phase is an important milestone for Kasiya. This covers the full spectrum of engineering and design, logistics, materials handling, water and environmental approvals, stakeholder engagement, livelihood restoration, tailings management and land rehabilitation. The successful permitting is a testament to the strong owner’s team we have assembled. We are progressing Kasiya into a totally new phase of development. The scale and results from this phase will significantly enhance our knowledge base from the previous laboratory-based studies. I want to thank the Malawi Government for an efficient approvals process, demonstrating just how important Kasiya is to all stakeholders.”
Classification 2.2: This announcement includes Inside Information
Sovereign Metals Limited (ASX:SVM; AIM:SVML) (the Company or Sovereign) is pleased to announce that the Company has initiated a Pilot Mining and Land Rehabilitation Program at its Kasiya Rutile-Graphite Project (Kasiya or Project) in Malawi.
The results will allow Sovereign to determine optimal excavation, backfill and land rehabilitation approaches. The Pilot Phase will be a demonstration to local communities of the successful rehabilitation of land for agricultural use post-mining. Results will also provide critical information for the upcoming Definitive Feasibility Study (DFS) and once commenced, it will shorten the time to its completion.
The objectives of the Pilot Phase include:
· Optimisation of mining methods by construction of a pilot-scale open pit close to the maximum depth of the current reserves at 20m;
· Scale-up of existing in-country processing capability by installation of commercial scale spirals to produce additional bulk samples for graphite product qualification;
· Optimising the tailings management and storage designs; and
· Optimising land rehabilitation, soil restoration and selection of revegetation species.
The commencement of the Pilot Phase follows the receipt within three months of all relevant approvals and permissions from the Malawi Environment Protection Authority (MEPA), National Water Resources Authority (NWRA), the Ministry of Mines, and the local community.
The Pilot Phase will be undertaken on a 9.9-hectare site and will include the following activities:
1. Test Pit: A test pit of 120m by 110m will be excavated to a depth of 20m, allowing optimisation of hydraulic and dry mining excavation methods.
2. Stockpiles: The excavated material will be temporarily stored in 4 stockpiles, namely all dry mining material, wet slimes (in a pond) and two sizes of sand fractions from the hydraulic mining.
3. Backfilling and Grading: The material will be placed back into the pit, and all areas will be graded.
4. Rehabilitation Demonstration: Sovereign will construct eight small rehabilitation demonstration pits covering a combined area of 100m by 130m. These will be used for water storage, excavated material storage, and demonstration of multiple rehabilitation approaches.
5. Temporary Laydown Areas: Four areas will be used as temporary laydown areas, offices, and associated infrastructure.
6. Communication: The Pilot Phase will be an educational opportunity for Project stakeholders. Sovereign will undertake a series of stakeholder visits and consultations for this purpose.
Kasiya is the world’s largest natural rutile deposit and the second-largest flake graphite deposit. Sovereign aims to develop a low-CO2 and sustainable operation to supply highly sought-after natural rutile and graphite to global markets.
Results of the PFS, released in late 2023, demonstrated Kasiya’s potential to become the world’s largest rutile producer at 222kt per annum and one of the world’s largest natural graphite producers (ex-China) at 244kt per annum.
The PFS delivered compelling economics with a post-tax NPV8 of US$1.6 Billion and a post-tax IRR of 28%. This long-life, multi-generational operation generates over US$16 Billion of revenue based on an initial 25-year life-of-mine and delivers an average annual EBITDA of US$415 Million per annum.
Pilot Phase Program Design
Activities have been designed to establish a 9.9-hectare site over the current Ore Reserve defined in the Kasiya PFS, covering a mineralised zone with soil conditions deemed representative of the overall Mineral Resource Estimate (MRE). Over approximately three months, Sovereign will excavate several test pits and collect geological and geotechnical samples. The main pit will be backfilled with dry material, while material from hydraulic mining will be used to fill the remaining pits as part of the rehabilitation phase.
Land rehabilitation will form an integral component of the DFS. Sovereign’s objective is to restore land after mining to conditions that achieve the same or better agricultural yields than existing land uses and crop yields. For this reason, the Company will undertake field-based demonstrations of rehabilitation showcasing drying times, soil recoveries, soil nutrients, growth variants, and including different soil inputs and revegetation methods.
Site Construction
Prior to the establishment of site infrastructure, eight boreholes have been permitted and drilled using a locally appointed drilling contractor. These boreholes will supply water to the site, which will be stored in a temporary water storage pond.
A perimeter fence will be erected around the site to maintain the necessary health and safety standards. Existing roads will be used for access to the site and, if required, improved through grading.
Temporary buildings such as offices and stores will be brought to the site on flatbed lorries and erected. To support pilot mining, two 1MW mobile diesel-powered electricity generators will be installed to provide the electricity required for high-pressure water monitors.
Pilot Mining
The main pit will be excavated using conventional load and haul to 20m depth to develop a sump to test hydraulic mining to the full depth of the current Ore Reserves. The excavated material will be temporarily stored in stockpiles.
On-Site Processing Facility
Material mined from the test pit will be processed on-site and at the Company’s laboratory facility in Lilongwe. As previously announced (Please refer to announcement dated 1 May 2024 entitled “Sovereign to Increase Bulk Sample Preparation Capacity”), as part of the Pilot Phase, a commercial-scale spiral plant will be installed at site in Malawi.
Rutile and graphite concentrate samples generated from the Pilot Phase will be shared with potential off-takers and end-users, and used for further testwork as part of the Company’s graphite commercialisation strategy.
Rehabilitation Phase
This phase will consist of establishing a strong soils baseline, backfilling of the test pit with different soil compositions, rehabilitation tests, revegetation with plants, and the improvement of soil conditions post-mining.
Regular monitoring and evaluation of the rehabilitation activities will be undertaken to assess the progress of vegetation growth and soil stabilisation. Following the conclusion of the rehabilitation, the proposed project site will be returned to farmland.
Figure 2: Site layout
Permitting
Permissions for the Pilot Phase were received following the successful submission of an Environmental and Social Management Plan to MEPA. Sovereign is committed to the responsible development of Kasiya. The Pilot Phase will be undertaken in accordance with Malawian Law and IFC Performance Standards, which will include protecting local communities and the natural environment.
ENQUIRIES
Frank Eagar (South Africa/Malawi) +61(8) 9322 6322 |
Sam Cordin (Perth) |
Sapan Ghai (London)
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Nominated Adviser on AIM and Joint Broker |
|
SP Angel Corporate Finance LLP |
+44 20 3470 0470 |
Ewan Leggat Charlie Bouverat |
|
|
|
Joint Brokers |
|
Stifel |
+44 20 7710 7600 |
Varun Talwar |
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Ashton Clanfield |
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Berenberg |
+44 20 3207 7800 |
Matthew Armitt |
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Jennifer Lee |
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Buchanan |
+ 44 20 7466 5000 |
#BRES Blencowe Resources PLC – Bulk Sampling Complete
27th February 2023 / Leave a comment
· 100 tonne bulk sample mining completed.
· Transport underway to Chinese graphite processing specialist Jilin Huiyang New Material Technology Company Ltd (“Jilin”) for final metallurgical testing in its existing facilities.
· Additional 150kgs sample already sent to Jilin for initial off-site testing.
· Ugandan Government had approved landmark one-off permit for Blencowe to export bulk sample graphite from Orom-Cross earlier in Q1 2023.
Blencowe Resources Plc (“Blencowe Resources” or the “Company”) (LSE: BRES) is pleased to announce it has completed the mining and packaging of both the 100t bulk sample and 150kg of sample from its flagship Orom-Cross Graphite Project. In January 2023 the Company received an approval from the Ugandan Ministry of Energy and Mineral Development to export materials from its Orom-Cross Graphite Project to Chinese testing facilities to enable final bulk metallurgical test work to be undertaken. Blencowe has mandated industry specialist Jilin to complete this test work in their existing plant facility, negating the requirement for the Company to build its own bulk testing facility on-site in the near term, saving both considerable time and cost.
This final stage of metallurgical test work is a key component of the ongoing Definitive Feasibility Study. Blencowe has already proven twice (in Canada/SGS and Australia/IMO) that it can achieve a high grade, low impurity 97% LOI concentrate from a composite mix of its two deposits at Orom-Cross. The Company expects to achieve the same results with this significantly larger sample size, thereby enabling the pre-qualification of end products and subsequent entry into binding offtake contracts.
Works to excavate and transport the bulk samples were undertaken under supervision of the Company’s geologists and the Ugandan Department of Geology, Survey and Mines (DGSM). Works were carried out by local Uganda firm ADT/LogVoy. The 100t bulk sample and the 400litres of groundwater are being sea-freighted from the Port of Mombasa, and the 150kgs of same samples are being fast-track air-freighted to same Jilin facility, to undergo metallurgical testing as a precursor to build knowledge before the larger samples arrive.
Once this bulk sample test is completed over the next few months Blencowe will utilise these same facilities to lift the 97% concentrate to a 99.95% SPG-ready product, which can then be tested by OEMs to ensure it meets their requirements. When this OEM testing is successfully completed binding offtake contracts may then be secured. In parallel Blencowe will also be doing same 99.95% SPG-ready testing in USA to obtain a separate qualification with another technical industry expert, thereby ensuring the widest range of offtake partners are available to the Company.
Cameron Pearce, Executive Chairman commented;
“Our process to secure end-product qualification, which then opens the door to binding offtake contracts, is underway. This is a methodical process designed to deliver an end-product that meets the most stringent battery grade testing by the OEMs. We are very confident in the product to be produced from Orom-Cross, especially given the lack of impurities within the concentrate in all testing thus far. If we can continue to demonstrate this quality in the months ahead we will be in excellent shape to complete this pre-qualification process.”
He added “The pre-qualification process remains a barrier to entry for many would-be graphite producers, as achieving the battery level quality the OEMs require is challenging. However, based on historical test results we are confident we will achieve this and, in doing so, place Orom-Cross as one of the highest quality graphite projects worldwide.“
For further information please contact:
Blencowe Resources Plc Sam Quinn |
www.blencoweresourcesplc.com Tel: +44 (0)1624 681 250
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Investor Relations Sasha Sethi |
Tel: +44 (0) 7891 677 441
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Tavira Financial Jonathan Evans |
Tel: +44 (0)20 3192 1733 jonathan.evans@tavirasecurities.com
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First Equity Limited Jason Robertson |
Tel: +44(0)20 7330 1833 jasonrobertson@firstequitylimited.com
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Twitter https://twitter.com/BlencoweRes
LinkedIn https://www.linkedin.com/company/72382491/admin/
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