Method for efficiently purifying manganese sulfate solution

The invention discloses a method for efficiently purifying a manganese sulfate solution, which comprises the following steps: adding manganese carbonate powder and concentrated sulfuric acid into a reaction kettle according to a mass ratio of 1: (0.9-1.2), adding a defoaming agent before adding the manganese carbonate powder, and reacting at 90-110 DEG C for 2-4 hours to obtain manganese sulfate ore pulp; adding manganese dioxide powder into the manganese sulfate ore pulp, reacting for 1 hour under the condition of keeping the pH value of the solution to be 2.5-3.0, and finally carrying out filter pressing, removing precipitates and taking coarse filtrate; and adding a neutralizer into the coarse filtrate to adjust the pH value to 4.5-5.0, then adding barium sulfide and sorbitol, carrying out a stirring reaction for 1-2 h, and then carrying out secondary filter pressing to obtain a filtrate which is a manganese sulfate solution. According to the method, molybdenum removal, potassium removal and sodium removal