The invention discloses a method for producing electrolytic manganese dioxide, which comprises the following steps: a) at the top of the reduction furnace and the manganese oxide ore and coal blending and drying after delivery to the vertical inlet from the downward movement; b) will be set in the gas by reducing furnace bottom heat gas burner jet combustion. The combustion of high temperature flue gas in the furnace chamber rotating reduction furnace; c) after high temperature reduction of a manganese oxide by cooling after discharging device for discharging, prepared a manganese oxide powder; d) with sulfuric acid leaching of manganese oxide mineral chemical reaction, the solid-liquid separation of crude manganese sulfate solution; E) purification of the crude manganese sulfate, manganese sulfate solution will be purified into the electrolytic manganese dioxide product obtained after electrolysis electrolytic cell. The manganese oxide powder prepared by the invention can be used as an alternative raw material for the production of electrolytic manganese dioxide, which solves the manganese industry dependence on the raw material of the manganese carbonate, and can greatly reduce the acid consumption and the cost.
【技术实现步骤摘要】
【技术保护点】
一种电解二氧化锰的生产方法，其特征在于，包括如下步骤：a）将氧化锰矿粉和煤炭混匀烘干后通过上料刮板机（10）和自动布料机（9）输送到竖直放置的还原炉（8）的顶部进料口，所述氧化锰矿粉和煤炭在还原炉（8）的还原管内自上向下运动；b)将煤气经设置在还原炉（8）下方的热媒气烧嘴（6）喷射燃烧，燃烧产生的高温烟气在还原炉（8）的炉腔内旋转上升，在燃烧区间，燃烧温度控制在700～900℃范围内；c）还原后的高温一氧化锰通过还原炉下部的冷却水箱（6）冷却后经出料刮板机（1）出料，制得成品一氧化锰矿粉；d）将一氧化锰矿粉与硫酸同时加入到浸出化合槽中，加热在90～95℃下进行浸出化合反应4?6小时，经固液分离得粗制硫酸锰溶液；e）对所述粗制硫酸锰溶液进行净化除杂，将净化后的硫酸锰溶液经板式换热器加热到90～100℃后进入高位槽，同时加入制备好的悬浮剂和发泡剂，通过管道供至各个电解槽，电解条件为：电解液温度为100～103℃，阳极电流密度为80～85A/m2，槽电压为2.2～3.5V，电解周期为12～20天，电解后得到电解二氧化锰。
【技术特征摘要】
【专利技术属性】
技术研发人员：陈奇志，贾艳桦，史磊，王绍立，陆超，方皓，黄盛武，陆宾，韦举良，曾德超，
申请(专利权)人：广西有色金属集团汇元锰业有限公司，
类型：发明
国别省市：
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