Purification of industrial grade lithium chloride for the recovery of high purity battery grade lithium carbonate
Abstract
Due to lithium’s high energy along with other exceptional characteristics, lithium demand across many industries is rising, specifically for Li-batteries. Thus, a sufficient supply of high purity lithium is vital in order for these significant technologies to develop. In the current work, industrial grade lithium chloride has been successfully treated with four simple precipitation steps to obtain a high purity battery grade lithium carbonate of >99.95%. The LiCl starting solutions contained K, Na, Mg, Ca, Cu, Ni, and Fe chloride contaminants and solutions of 2.5 to 10 M were simulated. The heavier metals and the majority of Mg were removed in a single step with an increase in pH. The removal of Ca and remaining Mg was executed by sodium oxalate addition where the calcium levels of the 10 M were able to be reduced to 5–6 ppm in solution. It appeared that the higher molarity and ionic strength of the LiCl solution aided in obtained higher degrees of impurity removal. Lastly, high purity Li2CO3 was obtained by first precipitating from brine solution, followed by a second purification step with pressurized CO2. The second step allowed for the removal of entrapped Na and K after the first precipitation, resulting inmore »
- Authors:
-
[1];
[1];
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Y-12 National Security Complex, Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1503997
- Alternate Identifier(s):
- OSTI ID: 1702198
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Separation and Purification Technology
- Additional Journal Information:
- Journal Volume: 214; Journal Issue: C; Journal ID: ISSN 1383-5866
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Lithium carbonate; Selective precipitation; Hydrometallurgy; Lithium recovery
Citation Formats
Linneen, Nicholas, Bhave, Ramesh, and Woerner, Douglas. Purification of industrial grade lithium chloride for the recovery of high purity battery grade lithium carbonate. United States: N. p., 2018.
Web. doi:10.1016/j.seppur.2018.05.020.
Linneen, Nicholas, Bhave, Ramesh, & Woerner, Douglas. Purification of industrial grade lithium chloride for the recovery of high purity battery grade lithium carbonate. United States. https://doi.org/10.1016/j.seppur.2018.05.020
Linneen, Nicholas, Bhave, Ramesh, and Woerner, Douglas. Wed .
"Purification of industrial grade lithium chloride for the recovery of high purity battery grade lithium carbonate". United States. https://doi.org/10.1016/j.seppur.2018.05.020. https://www.osti.gov/servlets/purl/1503997.
@article{osti_1503997,
title = {Purification of industrial grade lithium chloride for the recovery of high purity battery grade lithium carbonate},
author = {Linneen, Nicholas and Bhave, Ramesh and Woerner, Douglas},
abstractNote = {Due to lithium’s high energy along with other exceptional characteristics, lithium demand across many industries is rising, specifically for Li-batteries. Thus, a sufficient supply of high purity lithium is vital in order for these significant technologies to develop. In the current work, industrial grade lithium chloride has been successfully treated with four simple precipitation steps to obtain a high purity battery grade lithium carbonate of >99.95%. The LiCl starting solutions contained K, Na, Mg, Ca, Cu, Ni, and Fe chloride contaminants and solutions of 2.5 to 10 M were simulated. The heavier metals and the majority of Mg were removed in a single step with an increase in pH. The removal of Ca and remaining Mg was executed by sodium oxalate addition where the calcium levels of the 10 M were able to be reduced to 5–6 ppm in solution. It appeared that the higher molarity and ionic strength of the LiCl solution aided in obtained higher degrees of impurity removal. Lastly, high purity Li2CO3 was obtained by first precipitating from brine solution, followed by a second purification step with pressurized CO2. The second step allowed for the removal of entrapped Na and K after the first precipitation, resulting in >99.95 wt% purity Li2CO3.},
doi = {10.1016/j.seppur.2018.05.020},
journal = {Separation and Purification Technology},
number = C,
volume = 214,
place = {United States},
year = {Wed May 09 00:00:00 EDT 2018},
month = {Wed May 09 00:00:00 EDT 2018}
}
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Cited by: 29 works
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Figures / Tables:
Fig. 1: Process flow block diagram of high purity battery grade Li2CO3 from industrial grade LiCl.
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The Effect of Boron Forms on the Crystallization Process of Lithium Carbonate
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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.