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Critical Minerals Sustainability


Program Goals

  • Validate the technical and economic feasibility of domestic small pilot-scale facilities to produce high purity mixed rare earth oxides and critical materials from coal and coal-based resources

  • Produce 1-3 tonnes/day of high purity mixed rare earth oxides/salts in domestic engineering prototype facilities using coal-based and alternate resources as feedstock materials

 


Prospecting

Prospecting

The Program portfolio consists of a diverse set of domestic feedstock materials that include coal, coal refuse, clay/shale over/under-burden, aqueous effluents as acid mine drainage (AMD), associated solids and precipitates resulting from AMD treatment, and power generation ash. Chemical analyses of these materials are publicly accessible in NETL’s REE-CM EDX database.

Processing

Processing

Conventional and advanced extraction, separation, recovery and purification process RD&D development is the underlying basis of NETL’s Program.

Production

Production

Achievements to date have resulted in the design, construction and operation of three first-of-a-kind, small pilot-scale facilities producing small quantities (e.g., ~100 gm/day) of >90% (>900,000 ppm) high purity mixed rare earth oxides/salts from coal-based resources using conventional physical beneficiation and hydrometallurgical (chemical separation) processes.

 


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NETL implements this effort as part of DOE’s Clean Coal and Carbon Management Program.
Technology area contact:

Mary Anne Alvin