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Title: Systems and processes for recovery of high-grade rare earth concentrate from acid mine drainage

Abstract

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.

Inventors:
; ;
Publication Date:
Research Org.:
West Virginia Univ., Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1805653
Patent Number(s):
10,954,582
Application Number:
16/795,471
Assignee:
West Virginia University (Morgantown, WV)
DOE Contract Number:  
FE0031524
Resource Type:
Patent
Resource Relation:
Patent File Date: 02/19/2020
Country of Publication:
United States
Language:
English

Citation Formats

Ziemkiewicz, Peter F., Noble, Aaron, and Vass, Chris. Systems and processes for recovery of high-grade rare earth concentrate from acid mine drainage. United States: N. p., 2021. Web.
Ziemkiewicz, Peter F., Noble, Aaron, & Vass, Chris. Systems and processes for recovery of high-grade rare earth concentrate from acid mine drainage. United States.
Ziemkiewicz, Peter F., Noble, Aaron, and Vass, Chris. Tue . "Systems and processes for recovery of high-grade rare earth concentrate from acid mine drainage". United States. https://www.osti.gov/servlets/purl/1805653.
@article{osti_1805653,
title = {Systems and processes for recovery of high-grade rare earth concentrate from acid mine drainage},
author = {Ziemkiewicz, Peter F. and Noble, Aaron and Vass, Chris},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/1805653}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2021},
month = {3}
}

Patent:

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