Investor Presentaiton
SIMPLIFIED METSO OUTOTEC PROCESS(1)
Spodumene Na2CO3
Leach liquid recycling
Pressure
Leaching
Ca(OH)2
Condensates and process solutions
Conversion
Leaching
Mineral Residue, CaCO3
Lithium Hydroxide, LiOH
Crystallization
Lithium Hydroxide
Monohydrate, LiOH.H₂O
Critical Elements
Lithium Corporation
The Metso Outotec alkaline leach process (1)
benefits from:
■ Acid and sulphate-free process
■ Inert and neutral mineral residue
Produces battery-grade lithium hydroxide
monohydrate
Simple process with fast throughput
Several comparable projects have recently
announced plans to incorporate the Metso
Outotec process, including:
■ "Metso Outotec and Halmek Lithium to construct the
battery-grade lithium hydroxide process using soda
leaching", www.mining.com, 30 June 2021
"Kokkola lithium hydroxide plant
hydrometallurgical process with Metso Outotec
proceeds", Keliber Oy Progress Report Q1 2021
■ "Metso Outotec alkaline pressure leach replaces
acid roasting lithium conversion process", Piedmont
Lithium Scoping Update news release, 9 June 2021
Source: Metso Outotec
(1) On August 11th, 2022, the Corporation announced that it had complete an engineering study for a chemical plant to produce high quality lithium hydroxide monohydrate for the electric vehicle and energy
storage system battery industries. The study was prepared by Metso Outotec and WSP in Canada (WSP). The Company is not in a position to confirm as of the date hereof if the hydroxide chemical plant will
ever be implemented or that it will form part of the Rose Lithium-Tantalum project
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