The invention provides a method for purifying industrial
manganese sulfate through cooperation of concentrated
sulfuric acid and absolute ethyl
alcohol, belonging to the technical field of
manganese sulfate purification. According to the method, concentrated
sulfuric acid and an industrial
manganese sulfate solution are stirred and mixed at normal temperature, and manganese sulfate crystals are separated out by utilizing the same
ion effect generated by excessive
sulfate radicals, so
calcium ions and
magnesium ions in the industrial manganese sulfate solution are preliminarily separated; and a saturated manganese sulfate solution is prepared from the manganese sulfate crystals, and the saturated manganese sulfate solution and excessive concentrated
sulfuric acid are recrystallized, so
calcium and
magnesium ions in the manganese sulfate solution can be further separated, and the purity of the manganese sulfate crystals is improved. According to the method, absolute ethyl
alcohol is adopted for washing, the absolute ethyl
alcohol has a separation effect on
calcium and
magnesium ions in the manganese sulfate crystals, and meanwhile, the phenomenon that the crystals are too high in
viscosity and difficult to dry due to the fact that concentrated sulfuric acid is excessively used can be relieved. Meanwhile, the method is simple, low in cost and free of environmental
pollution.