Method for improving carbonization efficiency of lithium carbonate by controlling concentration of material

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 concentration of a material. The method comprises the following steps: dissolving a crude lithium carbonate product into distilled water to prepare lithium carbonate slurry of which the material concentration is 40-80g/L; feeding the slurry into a rotary packed bed, introducing CO2 gas into the rotary packed bed, and performing carbonization reaction for 40-150 minutes to obtain a material liquid, wherein the feeding speed of the slurry is controlled to be 100-450mL/minute, and the rotation speed of the rotary packed bed is not greater than 50Hz, and the flow of CO2 gas is 0.02-0.20m /L. With the combination of supergravity techniques and due to adoption of the rotary packed bed with the high rotation speed as reaction equipment, compared with the prior art, the method greatly improves the efficiency of converting lithium carbonate into lithium hydrogen carbonate by adjusting the concentration of the material and optimizing the reaction condition of the lithium carbonate carbonization process, and meanwhile the reaction time is shortened.