Method for improving carbonization efficiency of lithium carbonate by controlling gas flow

The invention relates to the technical field of chemical separation and purification, in particular to a method for improving the carbonization efficiency of lithium carbonate by controlling the flow gas. The method comprises the following steps: dissolving lithium carbonate rough products in distilled water, so as to prepare lithium carbonate slurry with the material concentration being 30 to 90 g/L, feeding the slurry into a rotating packed bed, feeding CO2 gas into the rotating packed bed, obtaining feed liquid after carbonization reaction is performed for 40 to 150 min, controlling the feeding speed of the slurry to be 80 to 450 mL/min, controlling the rotation speed of the rotating packed bed to be 10 to 50 Hz, controlling the flow of the CO2 gas to be 0.02 to 0.12 m /L, performing solid-liquid separation on the feed liquid, and obtaining lithium hydrogencarbonate solution. The method adopts the high gravity technology, adopts the high-speed rotating packed bed as reaction equipment, and adjusts the reaction condition of the carbonization process of lithium carbonate, and compared with the prior art, the method has the advantages that the efficiency of converting lithium carbonate into lithium hydrogencarbonate is greatly improved, and simultaneously the reaction time is shortened.