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Recovery of lithium from the effluent obtained in the process of spent lithium-ion batteries recycling
A novel process of lithium recovery as lithium ion sieve from the effluent obtained in the process of spent lithium-ion batteries recycling is developed. Through a two-stage precipitation process using Na.sub.2CO.sub.3 and Na.sub.3PO.sub.4 as precipitants, lithium is recovered as raw Li.sub.2CO.sub.3 and pure Li.sub.3PO.sub.4, respectively. Under the best reaction condition (both the amounts of Na.sub.2CO.sub.3 and Li.sub.3PO.sub.4 vs. the theoretical ones are about 1.1), the corresponding recovery rates of lithium (calculated based on the concentration of the previous stage) are 74.72% and 92.21%, respectively. The raw Li.sub.2CO.sub.3 containing the impurity of Na.sub.2CO.sub.3 is used to prepare LiMn.sub.2O.sub.4 as lithium ion sieve, and the tolerant level of sodium on its property is studied through batch tests of adsorption capacity and corrosion resistance. When the weight percentage of Na.sub.2CO.sub.3 in raw Li.sub.2CO.sub.3 is controlled less than 10%, the Mn corrosion percentage of LiMn.sub.2O.sub.4 decreases to 21.07%, and the adsorption capacity can still keep at 40.08 mg g.sup.-1. The results reveal that the conventional separation sodium from lithium may be avoided through the application of the raw Li.sub.2CO.sub.3 in the field of lithium ion sieve.
Recovery of lithium from the effluent obtained in the process of spent lithium-ion batteries recycling
A novel process of lithium recovery as lithium ion sieve from the effluent obtained in the process of spent lithium-ion batteries recycling is developed. Through a two-stage precipitation process using Na.sub.2CO.sub.3 and Na.sub.3PO.sub.4 as precipitants, lithium is recovered as raw Li.sub.2CO.sub.3 and pure Li.sub.3PO.sub.4, respectively. Under the best reaction condition (both the amounts of Na.sub.2CO.sub.3 and Li.sub.3PO.sub.4 vs. the theoretical ones are about 1.1), the corresponding recovery rates of lithium (calculated based on the concentration of the previous stage) are 74.72% and 92.21%, respectively. The raw Li.sub.2CO.sub.3 containing the impurity of Na.sub.2CO.sub.3 is used to prepare LiMn.sub.2O.sub.4 as lithium ion sieve, and the tolerant level of sodium on its property is studied through batch tests of adsorption capacity and corrosion resistance. When the weight percentage of Na.sub.2CO.sub.3 in raw Li.sub.2CO.sub.3 is controlled less than 10%, the Mn corrosion percentage of LiMn.sub.2O.sub.4 decreases to 21.07%, and the adsorption capacity can still keep at 40.08 mg g.sup.-1. The results reveal that the conventional separation sodium from lithium may be avoided through the application of the raw Li.sub.2CO.sub.3 in the field of lithium ion sieve.
Recovery of lithium from the effluent obtained in the process of spent lithium-ion batteries recycling
Guo, Xueyi (author) / Cao, Xiao / Huang, Guoyong / Tian, Qinghua / Sun, Hongyu
2017
Article (Journal)
English
BKL:
43.00
Study of Physical Treatment of Spent Military Use Lithium Primary Batteries for Recycling
| Taylor & Francis Verlag | 2007
| American Chemical Society | 2024