一、概况 我厂电镍工段由于采用碳酸钠做阳极液净化时的主要中和剂,所以电解液中的钠离子含量逐渐增高。电解液中含适量的钠离子是有其积极作用的,可增加电解液的导电率,降低槽电压。但含钠离子过高,会带来一系列不良影响:可在阳极表面形成硬壳,使阳极钝化;在阳极附近大量放出氯气;因钠不放电聚集在阴极附近,使隔膜内镍含量下降,而逸出氢气,导致OH~-浓度增高,产生镍的硷性盐沉淀,使产品质量变坏,严重时会影响生产的正常进 First, the general situation I plant nickel section as a result of sodium carbonate as the main neutralizing agent when purifying the anolyte, so the sodium ion content in the electrolyte gradually increased. Electrolyte contains an appropriate amount of sodium ions have a positive effect, can increase the conductivity of the electrolyte, reducing cell voltage. However, too high sodium ions can cause a series of adverse effects: a hard shell can be formed on the anode surface to passivate the anode; a large amount of chlorine gas is released near the anode; sodium is not concentrated in the vicinity of the cathode due to the decrease of nickel content in the separator , And out of hydrogen, resulting in OH ~ - concentration increases, resulting in nickel alkaline precipitation, the deterioration of product quality, serious will affect the production of normal