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Lithium Ark Process
from Lithium Chloride

The lithium Ark process is able to produce lithium hydroxide directly from lithium chloride with significantly less energy than the lithium chloride electrolysis, a process that is already 40 years under investigation without achieving industrial application.

The process avoids the use of lime and soda ash.


The lithium chloride is produced from brines from

  • salts flats (Salars) by solar evaporation or Direct Lithium Extraction (DLE) and

  • geothermal and smackover brines by DLE.

In the block diagrams below Lithium Ark process is compared with:

  • conventional liming process that uses soda ash and lime

  • lithium chloride electrolysis, a process patented 40 years ago, without any breakthrough due to chemistry limitations

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