Nouveau Monde Reveals Its Graphite Expansion Results of 342 ML/G. Symbol: NOU (TSX Venture), OTCQX: Nmgrf, Frankfurt: NM9
NOUVEAU MONDE REVEALS ITS GRAPHITE EXPANSION RESULTS OF 342 ML/G.
SYMBOL: NOU (TSX VENTURE), OTCQX: NMGRF, FRANKFURT: NM9
February 21th, 2018 FOR IMMEDIATE RELEASE
SAINT-MICHEL-DES-SAINTS, QUEBEC –Nouveau Monde Graphite Inc. (TSX-V: NOU) (“Nouveau
Monde”) is proud to announce the results of its research projec t aiming to develop a new
expandable graphite production process. The 6 -month research project was conducted in
partnership with the Natural Sciences and Engineering Research Council of Canada (NSERC) as
well as a Quebec research center. The results obtained are most convincing, foretelling
expansions of some 342 mL/g. The graphite used to conduct this research was exclusively sourced
from the West Zone of the Tony claim block of Nouveau Monde’s Matawinie graphite property.
Methodology
The major goal of this first phase of the expandable graphite research program was to prove the
process’ feasibility in laboratory mode and test out the expansion properties of the Matawinie
property graphite concentrate. Influence levels of other factors, such as graphite flake size,
treatment time and heating temperature, on the process’ successful outcome and expansion
levels obtained, were also assessed.
Graphite flakes were initially subjected to the reaction mixture for a predetermined time. Three
different treatment times were tested (t, t+1 h, t+2 h). Flakes were then recovered by filtration,
washed and dried. To create expansion, they were then rapidly oven -heated at three varying
temperatures (T °C, T+100 °C, T+200 °C), at three varying heating times (15, 30 and 60 seconds).
After being submitted to such treatment, the graphite was transferred into a graduated tube in
order to measure its volume and mass and help determine the process’s expansion factor in mL/g.
These controlled conditions were tested on two different types of flake samples; a mix of “large”
and “medium” flakes (60–120 mesh) and a “medium” and “fine” flakes mix (120–200 mesh).
Main results
This preliminary research draws the conclusion that, in the implemented process, chemical
treatment time, expansion temperature and flake size are all important factors that impact
substantially the expansion levels of graphite concentrate.
As a matter of fact, the expansion factor obtained varies between 125 and 342 mL/g for flakes of
60–120 mesh, depending on the chemical treatment and heating conditions the mineral was
subjected to. The optimal result of 342 mL/g was obtained through a chemical treatment time of
t+1 h and a thermal treatment time of 15 seconds at heating temperatures of T+200°C.
Influential Factors
Increasing the chemical treatment time has proven to have nuanced effects. Graphite expansion
increased when treatment time was set at t+1 h and decreased at a treatment time of t + 2h . As
per the effect of temperature, an increase in heat generally resulted in increased expansion levels.
Exposure time at high temperature has proven to have a negative impact in some cases, while its
effect appears to be neutral under other heating conditions.
A Graphite Deposit of Appropriate Attributes
Large (-48 + 80 mesh) and jumbo (+ 48 mesh) graphite flakes were proven to best respond to the
expansion process. Thicker flakes are also required to obtain large expansion ratios. The graphite
flakes of Nouveau Monde’s Matawinie project have these two attributes and are found in
distribution ratios of 32% for large flakes and 16% for jumbo ones (see April 11 th, 2017 press
release).
“We take much pride and motivation in the promising results of our research. Our graphite
concentrate has proven to be of high quality and we have successfully tested out the conditions of
our process. These are encouraging outcome considering expandable graphite, like spheronised
graphite, is a value -added product of great commercialization potential” , explains Éric
Desaulniers, President and CEO of Nouveau Monde.
“According to our knowledge, this process has never been successfully achieved in Quebec, wi th
graphite coming form this same region. In addition, t he quality of the expandable graphite
produced through these lab tests compares to the best expandable graphite created elsewhere,”
adds Andrew Tan, Technical Director at Nouveau Monde and previously Director of an expandable
graphite plant in China for SGL Carbon.
Next steps
The process development’s next steps will be to identify critical parameters for optimal process
conditions and to study the feasibility of recycling reagents for sustainable development objective
needs. Further laboratory testing will be funded through applied research and development
grants. Work will continue with our current partners. For reasons of competitiveness, Nouveau
Monde chooses to maintain the anonymity of its str ategic partner. An engineering firm
specializing in scaling up the chemical process has also been approached to partake in the
development and implementation of the demonstration project. The projected goal is to have a
demonstration process in operation by the end of 2019’s first six months.
The research project aiming at developing an optimized expanded graphite production process
was conducted using graphite concentrate extracted from the Matawinie property. The Nouveau
Monde’s Matawinie project was the subject of a 43–101 pre-feasibility study in October 2017 (see
October 25 th 2017 press release). This new research regarding expandable graphite is in direct
continuation of the Nouveau Monde’s commitment to sustainable development. The expandable
graphite process studied and tested is part of Nouveau Monde’s desire to use innovative
processes that comply with principles of sustainable development as a driving force for the
development of value-added graphite products.
About Expandable Graphite
The demand for expandable graphite has been steadily increasing in recent years. Its use in flame-
retardant materials is preferred to brominated materials deemed harmful for the environment.
Expandable graphite is normally formed by treating graphite flakes in a solution of sulfuric acid in
the presence of oxidizing agents. Acidic molecules are inserted in flakes by a process called
intercalation. When graphite is heated, encapsulated molecules decompose to form gas bubbles
that burst the structure to form expanded graphite. The latter can be pressed to form sheets for
use in small electronics. Its chemical and thermal stability makes it a material of choice in fuel cells
and a high-quality sealant in the automotive industry.
About Nouveau Monde Graphite
In 2015, Nouveau Monde discovered a graphite deposit on its Tony claims block, part of its fully
owned Matawanie graphite property. This discovery recently gave rise to the publication of
results from a Prefeasibility Study (PFS), released on October 25, 2017, by Nouveau Monde. This
PFS demonstrated strong economy with a planned production of 52,000 tpy of high purity flake
graphite concentrate, and a mine life of 27 years. The Probable Mineral Reserves identified over
the West Zone of the Tony Block totals 33.0 Mt grading 4.39 % Cg. These Reserves are prepared
in accordance with the Canadian Institute o f Mining, Metallurgy and Petroleum Definitions
Standards for mineral resources in concordance with National Instrument 43-101 – Standards of
Disclosure for Mineral Projects (« 43 -101 »). The Matawinie graphite project is located in the
municipality of Saint-Michel-des-Saints, approximately 150 km north of Montreal. It benefits from
direct access to a workforce and the appropriate infrastructure to operate, including abundant
and renewable hydroelectric resources. Nouveau Monde’s team members are developing this
project with the outmost respect for the neighboring communities, while targeting a low
environmental impact footprint.
The technical information in this news release was prepared by Martin Brassard PhD, Director
Research and development at Nouveau Monde Graphite and reviewed by Eric Desaulniers, M.Sc.,
P.Geo, President & CEO of Nouveau Monde Graphite. Mr Desaulniers is a Qualified Person as
define by NI 43-101.
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