硫酸铅产品质量影响因素的研究

Research on the Factors Affecting the Quality of Lead Sulfate

介绍了悬浮法合成硫酸铅的新工艺，并对影响产品质量的各种因素进行了探讨．该法来用了冰乙酸作催化剂，在水介质中加入氧化铅，再滴加一定量的浓硫酸来合成硫酸铅．实验最佳条件为：硫酸浓度为 ９４．５％，催化剂用量为 ０．０７ Ｌ／ｋｇ，加酸速度为 １— １．２ ｇ／ｍｉｎ，氧化铅颗粒粒度为 １８０— ２００目， ｐＨ值为 ４— ５，干燥蒸汽压力为 ０．４５ Ｐａ．与传统工艺相比较，本工艺具有生产周期短，洗涤废水后处理量少，安全操作性好，产品成本低等特点。

The paper presents a new synthetic method of lead sulfate called suspension and discusses the factors affecting the quality of lead sulfate products. This method involves using the glacial acetic acid as a catalyst, adding the litharge in aqueous medium and adding a quantity of oil of vitriol to yield lead sulfate. The paper suggests that the best conditions of syntheses are: the concentration of vitriol of 94.5%, the dosage of catalyst of 0.07 L/kg, the rate of acid addition of 1 - 1.2 g/min, the granular degree of litharge of 180 - 200 mesh, PH4 ~ 5, and the pressure of drying steam of 0.45 Pa. Compared with old technology, the advantage of this method is a shorter period of production and less handling of washing waste water and more safety and lower production costs.