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 lithium chloride concentrated solution; F, subjecting the lithium chloride concentrated solution to freezing cooling to precipitate sodium and
potassium, thus obtaining a final lithium chloride solution with
low sodium and
potassium; and G, carrying out concentration and separation on the final lithium chloride solution, and subjecting the obtained
solid to
drying so as to obtain a battery grade lithium chloride product. The method for preparation of battery grade lithium chloride from
spodumene leachate provided by the invention has the characteristics of simple process, high purity of finished product, stable product quality, low cost and high yield.