Method for preparation of battery grade lithium chloride from spodumene leachate
The invention discloses a method for preparation of battery grade lithium chloride from spodumene leachate. The method includes the steps of: A, adding a sodium hydroxide solution into a lithium sulfate spodumene leachate solution to adjust the PH to 10-13, adding sodium carbonate for reaction, and...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a method for preparation of battery grade lithium chloride from spodumene leachate. The method includes the steps of: A, adding a sodium hydroxide solution into a lithium sulfate spodumene leachate solution to adjust the PH to 10-13, adding sodium carbonate for reaction, and performing press filtration to obtain a primary lithium sulfate refined solution; B, subjecting theprimary lithium sulfate refined solution to calcium removal by chelate resin to obtain a secondary lithium sulfate refined solution; C, adding barium chloride dehydrate into the secondary lithium sulfate refined solution to obtain a primary lithium chloride solution; D, adding sodium carbonate into the primary lithium chloride solution, and conducting press filtration separation to obtain a secondary lithium chloride solution, and performing acidification and steam stripping to obtain a lithium chloride refined solution; E, conducting triple-effect evaporation on the lithium chloride refined solution to obtain a lithi |
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