6533b824fe1ef96bd12801e8
RESEARCH PRODUCT
Recovery of Lithium Carbonate from Dilute Li-Rich Brine via Homogenous and Heterogeneous Precipitation
Giuseppe BattagliaLeon BerkemeyerAndrea CipollinaJosé Luis CortinaMarc Fernandez De LabastidaJulio Lopez RodriguezDaniel Wintersubject
AnionsIonsSettore ING-IND/26 - Teoria Dello Sviluppo Dei Processi Chimici:Enginyeria química [Àrees temàtiques de la UPC]General Chemical EngineeringMetal recovery Lithium recovery Crystallization Water resourcesSaltsGeneral ChemistryPrecipitationLithiumLitiIndustrial and Manufacturing Engineeringdescription
An extensive experimental campaign on Li recovery from relatively dilute LiCl solutions (i.e., Li+ similar to 4000 ppm) is presented to identify the best operating conditions for a Li2CO3 crystallization unit. Lithium is currently mainly produced via solar evaporation, purification, and precipitation from highly concentrated Li brines located in a few world areas. The process requires large surfaces and long times (18-24 months) to concentrate Li` up to 20,000 ppm. The present work investigates two separation routes to extract Li+ from synthetic solutions, mimicking those obtained from low-content Li+ sources through selective Li+ separation and further concentration steps: (i) addition of Na2CO3 solution and (ii) addition of NaOH solution + CO2 insufflation. A Li recovery up to 80% and purities up to 99% at 80 degrees C and with high-ionic strength solutions was achieved employing NaOH solution + CO2 insufflation and an ethanol washing step.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-08-30 |