Abstract
Developing new, efficient methods for samarium and cobalt recovery from scraps/rejects and swarf at Sm-Co magnet manufacturing sites during shaping and finishing is an important task in terms of meeting their growing demand. In this work, the reaction of oxygen with a solution of samarium and cobalt chlorides in a LiCl-KCl eutectic melt was studied at 400-600 °C to explore possible methods for the separation and recovery of samarium and cobalt from these waste products. The pyrochemical reaction resulted in the formation and precipitation of samarium oxychloride, while the cobalt remained in the melt in a soluble chloride form. The effect of temperature and the amount of oxygen passed through the melt (oxygen-to-samarium molar ratio) on the course of the reaction were studied. Kinetic parameters of the oxygen with samarium chloride reaction were determined.
| Original language | English |
|---|---|
| Pages (from-to) | 16577-16583 |
| Number of pages | 7 |
| Journal | Industrial and Engineering Chemistry Research |
| Volume | 61 |
| Issue number | 44 |
| DOIs | |
| State | Published - Nov 9 2022 |
Funding
The work was supported by the U.S. Department of Energy, Office of Nuclear Energy. This manuscript has been authored by UT-Battelle, LLC, under Contract no. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).
| Funders | Funder number |
|---|---|
| U.S. Department of Energy | |
| Office of Nuclear Energy | DE-AC05-00OR22725 |
| Office of Nuclear Energy |