Academic Journal
LITHIUM SLAG LEACH SOLUTION REFINING BY HYDROXIDE PRECIPITATION.
| Title: | LITHIUM SLAG LEACH SOLUTION REFINING BY HYDROXIDE PRECIPITATION. |
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| Authors: | Klimko, J., Takacova, Z., Marcinov, V., Piroskova, J., Vindt, T., Liptai, P., Orac, D. |
| Source: | Journal of Mining & Metallurgy. Section B: Metallurgy; 2023, Vol. 59 Issue 3, p489-496, 8p |
| Subject Terms: | SLAG, COPPER, METAL recycling, HYDROXIDES, LEACHING, ALUMINUM-lithium alloys |
| Alternate Title: | RAFINISANJE LITIJUMSKE ŠLJAKE U RASTVORU ZA LUŽENJE POSTUPKOM TALOŽENJA HIDROKSIDA. (Bosnian) |
| Abstract (English): | Lithium-ion batteries contain many of critically important metals and their effective recycling is key to the EU's sustainable development. In the past, only metals such as Co, Ni, and Cu were recycled by pyrometallurgy, while Li and Al were concentrated in the slags and not further processed. The novel approach of pyrometallurgical treatment of the black mass offers the possibility of further hydrometallurgical utilization of the slags. This paper examines the refining of the solution obtained by leaching the slag in sulfuric acid. The most valuable element in the leach solution is Li, but it also contains Al, Si, Co, Mn, Ni and Cu, which must be removed before high-purity Li recovery is possible. Purification is achieved by adjusting the pH by adding NaOH. The results confirm that Al and Mn can be removed by 100%, Si by 93.56%, Cu by 86.36% and Cu by 61.75%. The results also confirmed that solution refining by the adding NaOH causes lithium losses ranging from 10% at pH 7 to 28% at pH 12. Therefore, it is suggested that further solution refining methods should be combined before precipitating pure Li |
| Abstract (Bosnian): | Litijum-jonske baterije sadrže mnogo važnih metala, a njihovo efikasno recikliranje ključno je za održivi razvoj EU. U prošlosti su se metali poput Co, Ni i Cu reciklirali pirometalurškim postupcima, dok su Li i Al ostajali koncentrisani u šljaci i nisu dalje obrađivani. Novi pristup pirometalurškom tretmanu crne mase pruža mogućnost dalje hidrometalurške upotrebe šljake. Ovaj rad ispituje prečišćavanje rastvora dobijenog luženjem šljake sumpornom kiselinom. Najvredniji element u rastvoru za luženje je Li, ali on sadrži i Al, Si, Co, Mn, Ni i Cu, koji moraju biti uklonjeni pre mogućeg izdvajanja Li visoke čistoće. Pročišćavanje se postiže podešavanjem pH vrednosti dodavanjem NaOH. Rezultati potvrđuju da se Al i Mn mogu ukloniti 100%, Si 93.56%, Cu 86.36% i Cu 61.75%. Rezultati takođe potvrđuju da prečišćavanje rastvora dodavanjem NaOH uzrokuje gubitke litijuma od 10% pri pH vrednosti 7 do 28% pri pH vrednosti 12. Stoga se predlaže da se dalji metodi prečišćavanja rastvora kombinuju pre taloženja čistog Li |
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| ISSN: | 14505339 |
| DOI: | 10.2298/JMMB231020042K |
| Database: | Complementary Index |
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