磷酸三丁酯从盐湖卤水中萃取锂的机理研究

Abstract

Abstract: Lithium was extracted from salt lake brine with tributylphoshate（TBP） as extraction reagent，sulfonated kerosene as diluent，and FeCl3·6H2O as co-extraction reagent.Effect of TBP concentration on extraction rate was investigated，and experimental results showed that the optimum concentrations of TBP and sulfonated kerosene were 80% and 20% respectively.Slope method，chemical analysis，UV and IR spectra confirmed that the lithium-ion（Li+） in solution reacted with FeCl4- to form LiFeCl4，and LiFeCl4 coordinated with P O bonds of TBＰ to form LiFeCl4·2TBP，so as to achieve the separation of lithium with other components.Extraction process was overviewed by cavity theory.

Key words: tributhlphoshate, extraction, lithium

CLC Number:

TQ131.11

ZHANG Yan-Hui, LI Li-Juan, LI Jin-Feng, JI Lian-Min, XU Qing-Ren, CHEN Guang-Hua. Study on mechanism of extraction of lithium from salt lake brine by tributylphosphate[J]. INORGANICCHEMICALSINDUSTRY, 2012, 44(3): 12-.

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Inorganic Acid-Base-Salt Committee of CIESC

Study on mechanism of extraction of lithium from salt lake brine by tributylphosphate

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