Mike Ralston, CEO of Blencowe Resources, explains the significance of the MSP for Orom-Cross. Watch the interview here.

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Mike Ralston, CEO of Blencowe Resources, explains the significance of the MSP for Orom-Cross

Mike Ralston, CEO of Blencowe Resources, explains the significance of the MSP for Orom-Cross

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Metallurgical Test Work Update

6 Dec 2022 07:00

RNS Number : 6770I
Blencowe Resources PLC
06 December 2022
 

Date: 06 December 2022 Blencowe Resources

 

Successful Further Metallurgical Test Work for Orom-Cross Graphite Project Sets-Up Bulk Sample Test Phase

Larger sample confirms same high quality end product as previous metallurgical test work

 

Highlights:

· Blencowe successfully completes critical metallurgical test work on substantially up-scaled quantities of Orom-Cross composite mix, as per what was previously tested by SGS in Canada.

· Results continue to highlight a high grade, low impurity concentrate can be delivered from Orom-Cross.

· Duplication of bench scale testing results now completed through to bulk sample test stage.

· Test work completed by leading Australian metallurgical test firm IMO.

· Blencowe now has considerably more volume of end product to send to interested end users for testing.

 

Blencowe Resources Plc ("Blencowe" or the "Company"), is pleased to announce that additional metallurgical test work on its Orom-Cross graphite project in Northern Uganda has been completed by leading technical specialist firm IMO based in Perth, Australia. This work is critical to understanding the quality of the end-product that Orom-Cross can deliver as a high-grade graphite concentrate, as well as what the process flow will look like to achieve this on a pre-commercial scale. It also provides significantly greater quantum of end product for end user testing which is critical for the Definitive Feasibility Study.

Blencowe appointed IMO to undertake metallurgical test work on material gathered from its drilling campaigns which covered both the Northern Syncline and Camp lode areas within Orom-Cross. The program was designed to deliver the following objectives:

1. Confirm a 95-97% TGC (Total Graphite Content) pure concentrate is possible with low impurities (Thorium and Vanadium).

2. Confirm ~90% recovery is achievable for this concentrate.

3. Confirm the liberation process in order to maintain a high percentage of Jumbo/XL/Large flakes within the concentrate.

4. Confirm the process flow diagram for plant design as part of the Definitive Feasibility Study.

5. Deliver bulk concentrate samples to allow Blencowe to initiate discussions with potential off-take partners.

Blencowe is pleased to announce that all 5 objectives have been met or exceeded in this latest round of test work. Open cycle floatation testing produced recoveries between 90-92% and concentrate grades consistently range between 95-98% which are battery grade.

The additional metallurgical test work was commissioned to test the upgradeability of the bench scale test work completed by SGS in Lakefield. A total of 1,400kg was processed (as compared to 100kg within SGS test work) and all metallurgical test-work undertaken to date shows a robust flowsheet capable of repeatable metallurgy for a wide range of feed samples from Orom-Cross.

A total of eight rougher and cleaner flotation tests were carried out on the Master composite that culminated in the flowsheet that is atypical of similar graphite projects. The flowsheet consists of a flash and rougher flotation stage followed by a primary cleaning circuit with a polishing mill followed by three stages of cleaner flotation. The intermediate concentrate is classified and then further upgraded in secondary cleaning circuits with stirred media mills (SMM) followed by cleaner flotation.

The proposed flowsheet was employed in a continuous pilot operation to determine the metallurgical response under typical operating conditions. The final concentrate graded 96.4% C(t) at 90.6% total carbon recovery which exceeded the company's expectations and places the end product recovered at the higher end of the spectrum in comparison to its peers. 

Test work was focussed on the 5 points above and not geared towards optimising the flake size fractions. As the resultant splits using an unoptimised circuit are within 5% of the fractions as determined by the original SGS bench scale works there may be further incremental value to be added by optimising ahead. The key takeaway from these results is that the scaling factors in the metallurgical testing will likely replicate the original test work and results through to commercial scale production.

At the end of this larger scale metallurgical program, approximately 80kg of concentrate was produced (versus 5-8kgs from SGS in Canada) which will be forwarded to potential end-users and project partners for additional test work on screening splits and grade analysis, as well as suitability for further downstream processing of the concentrate.

The design of the processing plant will be based on both the SGS and IMO test-work and best practice in similar operations. Importantly, the process requires no primary crushing or grinding of the ore, thus preserving the larger flake sizes, which is a material advantage over hard-rock graphite deposits.

 

Executive Chairman Cameron Pearce commented:

"We are delighted with these IMO met test results as they not only continue to underpin Orom-Cross concentrate as high quality in all key areas relevant to end users but the test work has highlighted that we can now deliver these end results on a much greater scale of raw material as processed. This is a key steps towards commercial stage production testing in a pilot plant facility. It also highlights the potential to increase the percentage of the more valuable coarse flake products through further optimisation of the processing circuits and this will be considered in the next round of testing. 

This latest set of results sets us up nicely for the bulk sample trial we will be conducting on 100 tonnes of Orom-Cross composite in 1H 2023 and if these same results are produced from that exercise we will be largely pre-qualified in terms of end products delivered as concentrate."

 

 

 

 

 

 

 

For further information please contact:

 

 Blencowe Resources Plc

 Sam Quinn

 

www.blencoweresourcesplc.com

Tel: +44 (0)1624 681 250

info@blencoweresourcesplc.com

 

Investor Relations

Sasha Sethi

Tel: +44 (0) 7891 677 441

sasha@flowcomms.com

 

Tavira Financial

Jonathan Evans

Tel: +44 (0)20 3192 1733

jonathan.evans@tavira.group

 

First Equity Limited

Jason Robertson

Tel: +44(0)20 7330 1833

jasonrobertson@firstequitylimited.com

 

Twitter https://twitter.com/BlencoweRes

LinkedIn https://www.linkedin.com/company/72382491/admin/

 

Background

Orom-Cross Graphite Project

Orom-Cross is a potential world class graphite project both by size and end-product quality, with a high component of more valuable larger flakes within the deposit.

A 21-year Mining Licence for the project was issued by the Ugandan Government in 2019 following extensive historical work on the deposit and Blencowe is moving into the Definitive Feasibility Study phase shortly as it drives towards first production.

Orom-Cross presents as a large, shallow open-pitable deposit, with a maiden JORC Indicated & Inferred Mineral Resource deposit of 24.5Mt @ 6.0% Total Graphite Content. Development of the resource is expected to benefit from a low strip ratio and free dig operations, thereby ensuring lower operating and capital costs.

 

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UPDTABTTMTJMTTT
Date   Source Headline
8th Oct 20247:00 amRNSGlobal MSP Accreditation
5th Sep 20247:00 amRNSMoU signed for Graphite Beneficiation in Uganda
2nd Sep 20247:00 amRNS600 tonne Processing Graphite to Battery Ready SPG
22nd Jul 20247:00 amRNSIssue of Equity
15th Jul 20247:00 amRNSDFC Grant Fourth Tranche
5th Jul 20247:00 amRNSConversion of 600t bulk sample to concentrate
25th Jun 20247:17 amRNS600t Bulk Sample Nearing Completion
14th Jun 20247:00 amRNSHalf-year Report
10th Jun 20247:00 amRNSFirst offtake for 15,000 tonnes
3rd Jun 20247:00 amRNSCorporate Presentation Updated
28th May 20249:00 amRNSCEO Video Interview
15th Apr 20247:00 amRNSBulk Sample Update
10th Apr 20247:00 amRNSReceipt of Third Tranche from DFC
26th Feb 20248:52 amRNSResult of AGM
9th Feb 20247:00 amRNSSubscription & Conditional Subscription - Replace
6th Feb 20247:00 amRNSSubscription & Conditional Subscription
31st Jan 20247:00 amRNSAnnual Financial Report
29th Jan 20247:00 amRNSDFC LOI Regarding Project Financing
25th Jan 20247:00 amRNSReceipt of further $1m Tranche from the DFC
2nd Jan 20247:00 amRNSProject Update
11th Dec 20237:00 amRNSDFS Update
30th Oct 20237:00 amRNSSPG Test Work Completed
10th Oct 202312:16 pmRNSReceipt of $1m Grant First Tranche from DFC
22nd Sep 20237:05 amRNSCorporate Presentation
22nd Sep 20237:00 amRNSDFC Grant Completed
4th Sep 20237:00 amRNSBulk Sampling Completed
23rd Aug 20237:16 amRNSHolding(s) in Company
14th Aug 20237:57 amRNSBulk Sampling Update & China Visit
18th Jul 20237:00 amRNSWarrants Update
22nd Jun 20231:49 pmRNSCEO Interview
19th Jun 20237:00 amRNSMetallurgical test work results
2nd Jun 20237:00 amRNSHalf-year Report
24th May 20238:59 amRNSHolding(s) in Company
18th May 20237:46 amRNSPlacing to Raise £635,000
9th May 20237:00 amRNSWebinar Today
2nd May 20237:11 amRNSInvestor Webinar & Updated Presentation
27th Apr 20233:22 pmRNSStrategic Funding Partner for Orom-Cross
18th Apr 20237:00 amRNSWarrant Expiry Extension
2nd Mar 20237:49 amRNSResearch Note
27th Feb 20237:00 amRNSBulk Sampling Complete
15th Feb 202310:17 amRNSResult of AGM
23rd Jan 20237:00 amRNSAppointment of Leading Engineering Firm to DFS
16th Jan 20237:00 amRNSFinal Metallurgical Testing Programs
13th Jan 20237:00 amRNSAnnual Results 30 September 2022 & Notice of AGM
11th Jan 20234:40 pmRNSSecond Price Monitoring Extn
11th Jan 20234:35 pmRNSPrice Monitoring Extension
11th Jan 20237:00 amRNSExport Approval for Bulk Samples
6th Dec 20227:00 amRNSMetallurgical Test Work Update
17th Nov 20229:00 amRNSPrice Monitoring Extension
27th Oct 202211:10 amRNSIssue of Options

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