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我厂试验生产电解二氧化锰过程中,电解液中的硫酸浓度会逐渐增高,按工艺要求硫酸浓度一般应控制在1摩尔/升以下,若酸度继续升高,除使电流效率降低外,更重要的是影响产品二氧化锰的质量,同时产品的晶型也有转化的可能。因此,电解液酸度的严格控制是生产上的一个重要因素。电解液中的硫酸是以游离状态存在的。过去采用常规酸碱中和法测定都得不到准确的结果,甚至测不出来。经试验证明采用Ca—EDTA配位体缓冲溶液作为掩蔽剂,能有效地掩
I plant the process of electrolytic manganese dioxide production process, the sulfuric acid concentration in the electrolyte will gradually increase, according to process requirements sulfuric acid concentration should generally be controlled at 1 mol / L or less, if the acidity continues to increase, in addition to reducing the current efficiency, more It is important that the quality of the product manganese dioxide is affected and that the crystalline form of the product is also transformed. Therefore, the strict control of electrolyte acidity is an important factor in production. Sulfuric acid in the electrolyte is in a free state. In the past using conventional acid-base neutralization method can not get accurate results, even undetectable. The test proved that the Ca-EDTA ligand buffer solution as a masking agent, can effectively mask