提出采用阴离子交换膜代替现有的布袋式隔膜，同时采用钌铱钽三元氧化物涂层电极作为阳极，结合现有的304不锈钢板作为阴极构成新型的阴离子交换膜电解槽用于电解锰的生产。采用阴离子交换膜，可将锰离子限制在阴极区，避免锰在阳极的沉积；研究发现，采用该电解槽沉积锰时，合适的锰离子浓度为20～25 g／L，该浓度下，合适的抗氧化剂（NH4）2 SO3的添加量为0．2 g／L，最佳的电流密度为45～50 mA／cm2，电流效率达到68％，电解槽槽压比传统槽压低约0．5 V，无硒电解沉积吨锰能耗降至5700 kW·h；所沉积锰板平整，晶粒细致均匀，有金属光泽。%In this paper,a new type electrolyzer used for electrodepositing manganese is assembled by the anion exchange membraneand RuO2-IrO2-Ta2O5 oxide coating anode as well as 316 stainless steel plate cathode.Using the anion exchange membrane,the manganese ion can be restricted to the cathode region.Thus,the deposition of manganese in anode can be avoided.It is found that the proper manganese ion concentration is 20 ~25 g/L,the adding amount of anti-oxidant (NH4)2SO3 is 0.2 g/L and the optimumcurrent density is 45 ~50 mA/cm2.Under this parameters,the manganese deposition efficiency reaches 68% and the energy consumption will decrease to 5 700 kWh/t·Mn.
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