Mechanochemical extraction of lithium at low temperature (MELLT) from α-spodumenes

Flow diagram showing the industry standard processes and the MELLT approach for Li-extraction from α-spodumene
Flow diagram showing the industry standard processes and the MELLT approach for Li-extraction from α-spodumene

CMI researchers from Ames National Laboratory conducted the activity for this highlight

Innovation 
Mechanochemical process to extract 85%+ of Lithium available in domestic hard-rock ore diversifying lithium supplies.

Achievement
Developed MELLT process that demonstrates a Lithium extraction yield of up to 94% from chemical-grade domestic α-spodumene, and submitted IPDR for patent application (ISURF #05593, AL809).

Significance and Impact

  • Elimination of the high-temperature thermal-decrepitation step
  • Replaces harsh acid/alkaline solutions with mild alternatives
  • MELLT offers a viable alternative to traditional energy- and waste-intensive methods, greatly reducing energy costs

Hub Target Addressed 
Recovery and conversion of critical minerals into high-value end products; industry adoption of technology for the source-diversification of Lithium enhancing energy security.