Title:
METHODS AND COMPOSITIONS TO RECOVER RARE EARTH ELEMENTS FROM ORGANIC SOLUTIONS
Document Type and Number:
WIPO Patent Application WO/2023/244839
Kind Code:
A3
Abstract:
In one aspect, the disclosure relates to oxalic acid-based extraction methods for the preparation of a pregnant leach solution obtained from a loaded organic phase obtained from a solvent extraction system, i.e., a LOPSES, wherein the loaded organic phase comprises an organic solvent and at least one REE and/or CM, as well as pregnant leach solution products or compositions obtained by the disclosed methods. The disclosure further relates to methods for preparing a loaded organic phase using a solvent extraction system. 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.
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Inventors:
FINKLEA HARRY (US)
LAROCHELLE TOMMEE (US)
CONSTANT JAMES (US)
HOFFMAN DAVID (US)
LAROCHELLE TOMMEE (US)
CONSTANT JAMES (US)
HOFFMAN DAVID (US)
Application Number:
PCT/US2023/025623
Publication Date:
February 29, 2024
Filing Date:
June 16, 2023
Export Citation:
Assignee:
WEST VIRGINIA UNIV BOARD OF GOVERNORS ON BEHALF OF WEST VIRGINIA UNIV (US)
International Classes:
C22B3/20; B01D11/02; C22B3/32; C22B3/38; C22B3/42; C22B59/00; C22B3/06; C22B7/00
Domestic Patent References:
| WO2014167534A1 | 2014-10-16 |
Foreign References:
| US20170260606A1 | 2017-09-14 | |||
| CN100584970C | 2010-01-27 | |||
| US20210207241A1 | 2021-07-08 |
Other References:
WANG YAN, ZIEMKIEWICZ PAUL, NOBLE AARON: "A Hybrid Experimental and Theoretical Approach to Optimize Recovery of Rare Earth Elements from Acid Mine Drainage Precipitates by Oxalic Acid Precipitation", MINERALS, vol. 12, no. 2, 12 February 2022 (2022-02-12), pages 1 - 15, XP093145323, ISSN: 2075-163X, DOI: 10.3390/min12020236
Attorney, Agent or Firm:
TIMMER, Richard, T. (US)
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