Method for preparing manganese carbonate, ammonium sulfate and dry powder building coating from electrolytic manganese leaching residues

The invention discloses a method for preparing manganese carbonate, ammonium sulfate and dry powder building coating from electrolytic manganese leaching residues. The method comprises the following steps: recycling metal components such as Al, Fe, Mn and the like from electrolytic manganese leaching residues through early-stage pretreatment to prepare a manganese carbonate product, recycling NH4 to prepare ammonium sulfate, calcining residual solids, adding an additive, uniformly mixing, and grinding and modifying to prepare the dry powder building coating. The preparation method is simple, the cost is low, the obtained product is good in purity, excellent in quality and high in utilization rate, the effects of complete comprehensive recycling and zero emission of the electrolytic manganese leaching residues can be achieved, the comprehensive benefit is high, and the method has very important significance in energy conservation, emission reduction and environmental pollution treatment in the electrolytic