SRG Graphite Reports on Latest Metallurgical and Expandable Graphite Test Results
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SRG Graphite Inc.
1320 Graham, Suite 132
Ville Mont-Royal, Québec
H3P 3C8
PRESS RELEASE FOR IMMEDIATE RELEASE
SRG Graphite Reports on Latest Metallurgical
and Expandable Graphite Test Results
Montreal, Quebec, March 1 4th, 2018 – SRG Graphite Inc. (TSXV: SRG) (“SRG” or the
“Company”) today is pleased to announce progress in the development of its mineral processing
flowsheet designed in conjunction with DRA Americas and SGS Canada. Additionally, the
Company has received positive test work results o n the expandable properties of its graphite
flakes from the Lola deposit.
The key result highlights are as follows:
Preliminary testwork suggests wet scrubbing as an alternative to traditional grinding is
possible, which would reduce capital and operating costs while promoting flake size
preservation.
Ongoing test work suggests the developed flowsheet would allow for 95% -98% Cg
concentrate to be produced over all size fractions.
Performed expandability test work on +50mesh and +80mesh graphite concentrate
obtained 350ml/g and 300ml/g, respectively, well over industry requirements.
Scrubbing Testwork
A first round of testwork is ongoing at SGS Canada Lakefield, with focus on the grinding
method, flotation and flowsheet development. SGS Canada conducted positive preliminary
testwork, using rotary scrubbing for mineral size reduction and graphite liberation. These results
support the hypothesis that, for SRG Graphite’s weathered mineralized material, wet scrubbing
alone, instead of the conventional primary grinding, is sufficient to produce the particle size
required and ensure graphite liberation for flo tation. The wet scrubbing method promotes
graphite flake size preservation during mineral size reduction.
“The Installation of rotary scrubbing circuit presents a great opportunity for the reduction in
capital and operating cost, as rotary scrubbing equipm ent is typically less expensive and
consumes less electric power compared to conventional (SAG, rod or ball mill) grinding circuit
employed for the same feed rate and processing duty” said Volodymyr Liskovych, P.Eng. Senior
Process Engineer, DRA.
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Flowsheet Refinement
In addition to the ongoing test work for the Company’s preliminary economic assessment, SGS
processed a 120kg bulk sample of material from the Lola deposit using its latest flowsheet. The
resulting grade concentrate is between 94.8% Cg and 97.9% Cg depending on the size fraction.
Purity of 96.6% Cg was obtained for the -100mesh concentrate, and 97.9% Cg was obtained for
the +50mesh. Jumbo flakes alone (+50mesh) accounted for 39% of the total concentrate
produced.
“The ongoing test work continues to demonstrate a simple flotation flowsheet applied to SRG
Graphite’s ore produces high purity graphite concentrate with a sig nificant amount of large and
jumbo flake fractions” says Russell McCarley, Senior Metallurgist at SGS Canada.
Graphite Expandability Testing
In addition to flowsheet development, the Company has tested its graphite flakes with
specialized German graphite laboratory, ProGraphite, for expandability properties. ProGraphite
performed expandability testwork on +50mesh and +80mesh graphite concentrate and obtained
350ml/g and 300ml/g respectively using an industry standard method for expandability .
Sulphuric acid (H2SO4) acted as acid and donor of the intercalation molecules, while potassium
permanganate (KMnO4) acted as oxidizing media to start the intercalation.
“To our knowledge, graphite flakes treated with this method typically require ratios higher than
250ml/g and 200ml/g for the +50mesh and +80mesh respectively, to be suitable for expandable
graphite markets. The coarse nature of SRG Graphite’s flakes along with the results obtained
during testing, makes this market particularly interesting for the Compan y.” Christoph Frey,
Managing Director at ProGraphite GmbH said.
The technical information in this release has been reviewed and approved by Raphael
Beaudoin, P.Eng, Director of Operations, SRG and a 'qualified person' as defined by National
Instrument 43-101, Standards of Disclosure for Mineral Projects.
ABOUT SRG
SRG is a Canadian-based company focused on developing the Lola graphite deposit located in
the Republic of Guinea, West Africa. SRG is committed to operating in a socially,
environmentally and ethically responsible manner.
For additional information, please visit SRG’s website at www.srggraphite.com.
For more information contact:
Ugo Landry-Tolszczuk
Tel: +1 (514) 679-4196
Email: [email protected]
Benoit La Salle, FCPA FCA
Tel: +1 (514) 951-4411
Email:
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Neither the TSXV nor its Regulation Services Provider (as that term is defined in the policies of
the TSXV) accepts responsibility for the adequacy or accuracy of this release.
Forward-Looking Statements
This press release contains "forward -looking information" within the meaning of Canadian
securities legislation. All information contained herein that is not clearly historical in nature may
constitute forward -looking information. Generally, such forward -looking information can be
identified by the use of forward -looking terminology such as “reduce”, “suggest”, “opportunity”,
“demonstrate”, or variations of such words and phrases or state that certain actions, events or
results "may", "could", "would" or "might". Forward -looking information is subject to known and
unknown risks, uncertainties and other factor s that may cause the actual results, level of
activity, performance or achievements of the Company to be materially different from those
expressed or implied by such forward-looking information, including but not limited to: (i) volatile
stock price; (ii) the general global markets and economic conditions; (iii) the possibility of write -
downs and impairments; (iv) the risk associated with exploration, development and operations
of mineral deposits; (v) the risk associated with establishing title to mineral properties and
assets; (vi) fluctuations in commodity prices and other risks and factors described or referred to
in the section entitled "Risk Factors" in the MD&A of the Company and which is available at
www.sedar.com, all of which should be reviewed in conjunction with the information found in
this news release
Forward-looking information is based on assumptions management believes to be reasonable
at the time such statements are made, including but not limited to, continued exploration
activities and no material adverse change in mineral prices. Although the Company has
attempted to identify important factors that could cause actual results to differ materially from
those contained in the forward-looking information, there may be other factors that cause results
not to be as anticipated, estimated or intended. There can be no assurance that such forward -
looking information will prove to be accurate, as actual results and future events could differ
materially from those anticipated in such forward -looking information. Such forward -looking
information has been provided for the purpose of assisting investors in understanding the
Company's business, operations and exploration plans and may not be appropriate for other
purposes. Accordingly, readers should not place undue reliance on forward-looking information.
Forward-looking information is given as of the date of this press release, and the Company does
not undertake to update such forward -looking information except in accordance with applicable
securities laws.