Systems and processes for recovery of high-grade rare earth concentrate from acid mine drainage
In one aspect, the disclosure relates to a continuous process for treating acid mine drainage while simultaneously recovering a high-grade rare earth preconcentrate suitable for extraction of commercially valuable rare earth oxides. In a further aspect, the preconcentrate is from about 0.1% to 5% rare earth elements on a dry weight basis. In another aspect, the disclosure relates to a method for processing the preconcentrate to generate a pregnant leach solution that does not form gels or emulsions and is suitable for processing via solvent extraction. In another aspect, the disclosure relates to a system and plant for carrying out the disclosed process. In still another aspect, the disclosure relates to a composition containing rare earth elements produced by the process disclosed herein. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.
- Research Organization:
- West Virginia Univ., Morgantown, WV (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FE0031524
- Assignee:
- West Virginia University (Morgantown, WV)
- Patent Number(s):
- 10,954,582
- Application Number:
- 16/795,471
- OSTI ID:
- 1805653
- Resource Relation:
- Patent File Date: 02/19/2020
- Country of Publication:
- United States
- Language:
- English
Continuous Solvent Extraction Process for Generation of High Grade Rare Earth Oxides from Leachates Generated from Coal Sources
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patent-application | February 2020 |
Low-Cost Selective Precipitation Circuit for Recovery of Rare Earth Elements from Acid Leachate of Coal Waste
|
patent-application | May 2019 |
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