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Abstract

A preparation method for a functional material for extracting lithium from an aluminum salt includes the following steps: step 1, preparation of an aluminum salt functional material precursor slurry: mixing polyaluminum, a lithium source and water in proportion, adding an additive, performing ultrasonic stirring to obtain a mixed salt solution, adding an alkali liquor or a basic salt solution into the mixed salt solution at a certain flow rate, adjusting the pH value, and then performing constant-temperature stirring reaction to obtain a lithium-intercalated aluminum salt functional precursor slurry; and step 2, preparing a functional material for extracting lithium from an aluminum salt, namely performing solid-liquid separation, washing and drying on the precursor slurry obtained in the step 1 to obtain the functional material for extracting lithium from an aluminum salt. Cheap polyaluminum is used as an aluminum source, and the water solubility is good.

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First Claim