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- Title
溶剂萃取法从低品位高黏土浸出液中提取锂的研究.
- Authors
李慧芳; 王 晓; 白有鹏; 张世翔
- Abstract
Tributyl phosphate (TBP) was acted as extractant, Methyl isobutyl ketone (MIBK) was used as diluent, FeCl3 played as co-extraction agent, and solvent extraction method was used to separate and extract lithium from high clay leaching solution. The effects of aqueous phase composition, the kinds of metal ion in loaded organic phase, AlCl3 concentration in loaded organic phase, TBP concentration in organic phase, Fe/Li mass ratio, phase ratio and other factors on extraction performance were investigated. The experimental results showed that when the aqueous phase composition was determined as 0.028 8 mol/L LiCl+0.036 5 mol/L FeCl3+2 mol/L AlCl3, the metal ion in loaded organic phase was Al3+, the concentration of AlCl3 in the loaded organic phase was 2 mol/L, the concentration of TBP was 50%, the molar ratio of Fe/Li was 1.7 and the phase ratio of (Volume ratio of organic phase to aqueous phase) 2∶1 the extraction effect was optimal. In order to realize the recycling of the loaded organic phase, 3 mol/L HCl and 1 mol/L Na2CO3 were identified as the stripping and regeneration solution, respectively. In addition, in order to realize the efficient extraction of lithium resources, the three stage counter-current cascade experiment was used to carry out the lithium cascade extraction experiment. After the cascade experiment, the extraction rate of lithium reached 99.72%.The experimental results indicated that TBP-MIBK-FeCl3 extraction system could effectively separate and extract lithium from low grade and high clay leaching solution.
- Subjects
HEXONE; LITHIUM; TRIBUTYL phosphate; SOLVENT extraction; METAL ions; LEACHING
- Publication
Inorganic Chemicals Industry, 2023, Vol 55, Issue 10, p63
- ISSN
1006-4990
- Publication type
Article
- DOI
10.19964/j.issn.1006-4990.2022-0713