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Metallurgical test work results

19 Jun 2023 07:00

RNS Number : 0756D
Blencowe Resources PLC
19 June 2023

Date: 19 June 2023 Blencowe Resources


Further metallurgical test work confirms high quality of end products from Orom-Cross



· Blencowe successfully completes critical metallurgical test work on a substantially increased scale of 150kgs by leading Chinese graphite metallurgical test laboratory at Wuhan University.

· Previous metallurgical test work by both SGS in Canada and IMO in Australia based on smaller sample sizes.

· Results continue to highlight a high grade, low impurity concentrate.

· Refinements to the processing methodology delivers;

Increased percentage of higher value large and jumbo flakes within the 97% concentrate (36% increases to 38%).

Increased recoveries (90% increases to 93%).

· Blencowe now has considerably more volume of end product concentrate to send to potential offtake and strategic parties ahead.


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 the leading Chinese graphite technical specialist laboratory, based at Wuhan University. This is recognised as one of the most experienced graphite facilities in the world and has been conducting similar tests to improve graphite processing methodology for over 30 years.

This test work is also 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 commercial scale. It also provides significantly greater quantum of end product for end user testing, which is critical within the Definitive Feasibility Study ("DFS").

Metallurgical Test Work Objectives

Blencowe appointed Wuhan University in partnership with Jilin New Technology 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 achievable on the larger sample size with low impurities (in particular thorium and vanadium) as previously indicated.

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

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

4. Confirm the process flow diagram for the pilot plant design as part of the DFS.

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

Metallurgical Test Work Results

Blencowe is pleased to announce that all 5 objectives have been met or exceeded in this round of test work. Open cycle floatation test produced recoveries between 92-94% (previously 90%) and concentrate grades consistently range between 95-98% for all graphite mesh sizes.

The additional metallurgical test work was commissioned to test the required pilot plant configuration 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.

The proposed flowsheet was employed in a continuous pilot operation to determine the metallurgical response under typical operating conditions. The final concentrate graded 96.0% C(t) at 93.2% 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. 

The pilot plant circuit optimisation undertaken to date has lifted the large flake recovery by 3% and also lifted the fines concentrate grade by some 2% TGC, whilst maintaining the grade in other flake sizes. This is important in terms of further downstream processing these fines to deliver a 99.9% SPG (spheronised, purified graphite) battery-ready product. The resultant test work was focused towards achieving the five key objectives as outlined above, as well as being geared towards optimising the flake size fractions and the finer mesh concentrate grade.

100t Bulk Update

These highly encouraging results will enable the Company to now proceed with further improvements and optimisation to the plant ahead of processing the previously announced 100t bulk sample, which has already been extracted and exported from Uganda to China. Blencowe will continue to refine the commercial plant design throughout the DFS to optimise the pilot process and the end product it will deliver.


Executive Chairman Cameron Pearce commented:

"We are delighted that to see that our graphite product continues to deliver strong metallurgical results which is now endorsed by the leading graphite processing team in China. These results indicate that our concentrate is a highly marketable end product and will translate to more interested strategic and offtake parties being able to buy our product.

We will now progress with the much larger 100t bulk sample for our DFS, which will underpin our project value. I cannot emphasise enough that success within graphite projects is largely based on metallurgy and we are consistently getting results that end users of the product will find highly attractive when it comes to mining Orom-Cross and selling the range of products from that operation."









For further information please contact:


 Blencowe Resources Plc

 Sam Quinn

Tel: +44 (0)1624 681 250


Investor Relations

Sasha Sethi

Tel: +44 (0) 7891 677 441


Tavira Financial

Jonathan Evans

Tel: +44 (0)20 3192 1733


First Equity Limited

Jason Robertson

Tel: +44(0)20 7330 1833







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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Date   Source Headline
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
26th Oct 20227:00 amRNSStrategic Investment
24th Oct 20224:41 pmRNSSecond Price Monitoring Extn
24th Oct 20224:36 pmRNSPrice Monitoring Extension
6th Oct 202212:45 pmRNSWebinar Call
3rd Oct 20229:06 amRNSSecond Price Monitoring Extn

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