Toronto, Ontario--(Newsfile Corp. - November 16, 2017) - Avalon
Advanced Materials Inc. (TSX: AVL) (OTCQX: AVLNF) ("Avalon" or the "Company") is pleased to report that it is
proceeding with three key metallurgical testwork programs designed to optimize its lithium process flowsheets and prepare for final
design and engineering of its Phase 1 demonstration scale production facility at Separation Rapids near Kenora, ON. These programs
will target improved recoveries, increased concentrate grades, lower operating costs, reduced reagent consumption and a further
reduction in waste materials requiring disposal.
Lepidolite Recovery and Flotation Testwork
Further to the Company's news releases dated October 26, 2017 (http://avalonadvancedmaterials.com/news_media/display/index.php?id=29974),
Avalon is proceeding with further testwork to optimize the flowsheet designed for recovery of a concentrate of lepidolite.
Lepidolite is a second lithium ore mineral (in addition to petalite) estimated to constitute approximately 20% of the known lithium
resource at Separation Rapids. Previous testwork has already demonstrated that a lepidolite flotation concentrate assaying 4.5%
lithium oxide (Li2O) can be readily recovered from Separation Rapids ore. The current lepidolite testwork is designed to
confirm or improve upon the 90% recovery previously achieved, as well as to increase the Li2O content of the
concentrate.
The Company continues to receive expressions of interest from international lithium processors interested in securing lepidolite
concentrates. Improvements in lepidolite concentrate grade will make Avalon's product more attractive and reduce unit
transportation costs per tonne of Li2O delivered.
The flotation testwork will also include additional work on the petalite concentrate flowsheet through further locked-cycle
tests that will generate additional petalite concentrate for product marketing purposes and hydrometallurgical process
optimization.
Finally, the current flotation flowsheets for both petalite and lepidolite include an initial magnetic separation stage to
remove iron-bearing minerals from these concentrates. Since the main iron-bearing minerals in the ore are micas that also contain
significant lithium, the magnetic separate is effectively another lithium concentrate. Additional testwork is planned to upgrade
this concentrate and create another potential economic feed for the production of lithium battery materials from the Separation
Rapids resource.
High-grade Petalite Concentrate Production
In a separate flotation test program, Avalon is designing a process to produce a high grade petalite concentrate (4.5%
Li2O) with greatly reduced levels of sodium and potassium to meet a potential customer's requirements for a specialized,
high purity product. Initial results have already achieved acceptable levels of 0.11% sodium oxide (Na2O) and 0.29%
potassium oxide (K2O) with the expectation that additional testwork will further reduce these levels. This high purity
petalite concentrate will be a premium quality material for certain specialty glass applications.
New Membrane Technology Testwork
The introduction of specially tailored membranes into the petalite hydrometallurgical flowsheet has the potential to
significantly reduce plant operating and capital costs, as well as greatly lowering energy requirements and the overall
environmental footprint of the operation.
In a new testwork program, Avalon has engaged the services of an international specialist consultant in the field of membrane
technology to conduct a series of trials in their laboratory utilizing potential membrane alternatives. The work will focus
initially on simplifying the current three-stage impurity removal processes, as well as generating a more concentrated intermediate
lithium sulphate stream ahead of conversion to lithium hydroxide.
Patent Application
Avalon recently filed an International Patent Application for its new hydrometallurgical process flowsheet the Company created
for producing lithium hydroxide from petalite. Earlier in 2017, the National Research Council successfully synthesized a lithium
and nickel-manganese-cobalt (NMC) cathode material using the very high purity lithium hydroxide produced by Avalon using this
process. (See Avalon's news release dated July
6, 2017 (http://avalonadvancedmaterials.com/news_media/display/index.php?id=27824)).
For questions and feedback, please e-mail the Company at ir@AvalonAM.com, or phone Don
Bubar, President & CEO at 416-364-4938.
The technical information contained in this news release has been reviewed and approved by Dave Marsh, FAusIMM (CP), Senior
Vice President, Metallurgy and Technology Development: a qualified person for the purposes of National Instrument 43-101.
About Avalon Advanced Materials Inc.
Avalon Advanced Materials Inc. is a Canadian mineral development company focused on technology metals and minerals. The Company
has three advanced stage projects, all 100%-owned, providing investors with exposure to lithium, tin and indium, as well as rare
earth elements, tantalum, niobium, and zirconium. Avalon is currently focusing on its Separation Rapids Lithium Project, Kenora, ON
and its East Kemptville Tin-Indium Project, Yarmouth, NS. Social responsibility and environmental stewardship are corporate
cornerstones.
This news release contains "forward-looking statements" within the meaning of the United States Private Securities Litigation
Reform Act of 1995 and applicable Canadian securities legislation. Forward-looking statements include, but are not limited to,
statements that it is proceeding with three key metallurgical testwork programs, and that these programs will target improved
recoveries, increased concentrate grades, lower operating costs, reduced reagent consumption and a further reduction in waste
materials requiring disposal, that improvements in lepidolite concentrate grade will make Avalon's product more attractive and
reduce unit transportation costs per tonne of Li2O delivered, that the flotation testwork will also include a component
of additional work on the petalite concentrate flowsheet through further locked-cycle tests that will generate additional petalite
concentrate for product marketing purposes and hydrometallurgical process optimization, that additional testwork is planned to
upgrade this concentrate and create another potential economic feed for lithium battery materials production from the Separation
Rapids resource, that a high purity petalite concentrate will be a premium quality material for certain specialty glass
applications and the introduction of specially tailored membranes into the petalite hydrometallurgical flowsheet has the potential
to significantly reduce plant operating and capital costs, as well as greatly lowering energy requirements and the overall
environmental footprint of the operation. Generally, these forward-looking statements can be identified by the use of
forward-looking terminology such as "potential", "scheduled", "anticipates", "continues", "expects" or "does not expect", "is
expected", "scheduled", "targeted", "planned", or "believes", or variations of such words and phrases or state that certain
actions, events or results "may", "could", "would", "might" or "will be" or "will not be" taken, reached or result, "will occur" or
"be achieved". Forward-looking statements are subject to known and unknown risks, uncertainties and other factors that may cause
the actual results, level of activity, performance or achievements of Avalon to be materially different from those expressed or
implied by such forward-looking statements. Forward-looking statements are based on assumptions management believes to be
reasonable at the time such statements are made. Although Avalon has attempted to identify important factors that could cause
actual results to differ materially from those contained in forward-looking statements, there may be other factors that cause
results not to be as anticipated, estimated or intended. Factors that may cause actual results to differ materially from expected
results described in forward-looking statements include, but are not limited to market conditions, and the possibility of cost
overruns or unanticipated costs and expenses as well as those risk factors set out in the Company's current Annual Information
Form, Management's Discussion and Analysis and other disclosure documents available under the Company's profile at www.SEDAR.com. There can be no assurance that such statements will prove to be accurate, as actual
results and future events could differ materially from those anticipated in such statements. Such forward-looking statements have
been provided for the purpose of assisting investors in understanding the Company's plans and objectives and may not be appropriate
for other purposes. Accordingly, readers should not place undue reliance on forward-looking statements. Avalon does not undertake
to update any forward-looking statements that are contained herein, except in accordance with applicable securities
law
