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Study on optimization of synergistic lithium extraction process of tributyl phosphate-ethyl butyrate system by response surface method
Received date: 2022-01-19
Online published: 2022-11-03
The process of synergistic extraction of lithium from salt lake brine by tributyl phosphate-ethyl butyrate system was studied by response surface method with volume concentration of TBP,molar ratio of iron-lithium and phase ratio as independent variables and lithium extraction efficiency as response index.The optimal process conditions of the system obtained by response surface method were as follows:the volume concentration of TBP was 43%,the molar ratio of iron to lithium was 1.9 and phase ratio was 2.4.Under these conditions,the predicted value of lithium extraction efficiency was 92.39%,the actual measured valuewas 91.42%,and the relative error between predicted value and measured value was 1.05%.This study could provide a reference for the separation and extraction of lithium from salt lake brine.
Key words： response surface method; extraction; brine; lithium
Chenglong SHI , Shuqing MA , Yaru QIN , Bing LIU , Haichao LI . Study on optimization of synergistic lithium extraction process of tributyl phosphate-ethyl butyrate system by response surface method[J]. Inorganic Chemicals Industry, 2022 , 54(10) : 37 -41 . DOI: 10.19964/j.issn.1006-4990.2022-0034
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