A method for extracting lithium from high aluminum lithium ratio chloride leach solution
A leachate and chloride technology, applied in the chemical industry, can solve problems such as unfavorable industrialization implementation and long-term stable production, and achieve the effects of reducing extraction process costs, low equipment requirements, and reducing corrosion
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Embodiment 1
[0047] 1) Add the above-mentioned high-aluminum-lithium-ratio chloride leachate and sodium aluminate into the reaction kettle to stir and react. The reaction liquid-solid ratio is 60:1, the reaction temperature is 50°C, the reaction time is 1 hour, and the alkalization degree is controlled at 15 %, the aluminum chloride filtrate was obtained by filtering after the reaction was finished, and was used as the clear solution of the extraction stock solution;
[0048] 2) Use tributyl phosphate as the extractant and 200# kerosene as the diluent, mix tributyl phosphate TBP and 200# kerosene at a volume ratio of 7:3 to obtain a blank organic phase; take one part of the blank organic phase and one part A solution containing 0.1-1mol / L ferric chloride and 0.1-8mol / L hydrochloric acid is mixed, shaken for 10 minutes and then left to separate phases to obtain the extracted organic phase;
[0049] 3) Fully mix 2 parts of the extracted organic phase and 1 part of the extracted raw liquid, a...
Embodiment 2
[0054] 1) Add the above-mentioned high-aluminum-lithium-ratio chloride leaching solution and calcium aluminate into the reaction kettle and stir for reaction. The reaction liquid-solid ratio is 30:1, the reaction temperature is 70°C, the reaction time is 45 minutes, and the alkalization degree is controlled at 8 %, the aluminum chloride filtrate was obtained by filtering after the reaction was finished, and was used as the clear solution of the extraction stock solution;
[0055] 2) Use trioctyl phosphate as the extractant and 200# kerosene as the diluent, mix trioctyl phosphate and 200# kerosene at a volume ratio of 7:3 to obtain a blank organic phase; take one part of the blank organic phase and one part containing Mix a solution of 0.1-1mol / L ferric chloride and 0.1-8mol / L hydrochloric acid, shake for 10 minutes and then stand still for phase separation to obtain the extracted organic phase;
[0056] 3) Fully mix 7 parts of the extracted organic phase and 1 part of the extr...
Embodiment 3
[0060] 1) Add the above-mentioned high-aluminum-lithium-ratio chloride leachate and sodium aluminate into the reaction kettle to stir and react, the reaction liquid-solid ratio is 45:1, the reaction temperature is 45°C, the reaction time is 30 minutes, and the alkalization degree is controlled at 20 %, the aluminum chloride filtrate was obtained by filtering after the reaction was finished, and was used as the clear solution of the extraction stock solution;
[0061] 2) Use tributyl phosphate TBP as the extractant and sulfonated kerosene as the diluent, mix tributyl phosphate TBP and sulfonated kerosene at a volume ratio of 7:3 to obtain a blank organic phase; take a portion of the blank organic phase and a Mix a solution containing 0.1 to 1 mol / L ferric chloride and 0.1 to 8 mol / L hydrochloric acid, shake for 10 minutes and then stand still to separate the phases to obtain the extracted organic phase;
[0062] 3) Fully mix 5 parts of the extracted organic phase and 1 part of ...
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