Research & Development
To compete with spodumene, production of lithium from micas requires an unique and efficient physical beneficiation process to produce a concentrate with high recovery followed by environmentally friendly alkaline leach and purification. There are currently no refiners globally who can process Zinnwaldite concentrate, and so a complete plant from mine, to beneficiation, to refining will be needed in Cornwall.
British Lithium’s engineers have successfully beneficiated Cornish micas using our unique process to produce a +4% Li Lithium concentrate with recovery over 90%. Note that the grade achieved was higher than the theoretical maximum possible. We have also conducted numerous roast trials producing near battery grade lithium carbonate. Successful metallurgical research and process development is critical to demonstrating the potential for economic recovery of Lithium in Cornwall and much remains to be done.