Abstract
Nemaska Lithium has developed an electrochemical process to produce high purity lithium hydroxide directly using a green and low cost hydroelectric power as the main resource. This electrochemical process converts directly the lithium sulfate extracted from spodumene concentrate into lithium hydroxide and sulfuric acid of high purity. In comparison with the conventional chemical process who produce technical grade lithium carbonate and sodium sulfate by-product using soda ash, the Nemaska electrochemical process has significant advantages. The quality of the product is higher, the operational cost is lower and the benefits for the environment are huge. The advantages of the Nemaska process will be discussed in detail. The growing demand for high-purity batteries grade lithium hydroxide monohydrate for the synthesis of cathode materials for rechargeable lithium batteries will also be discussed.
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