近十几年来,湿法炼锌工艺得到了很大发展。特别是七十年代以来相继投产的一批湿法炼锌厂,产量大,技术指标比较先进,机械化自动化水平高。这类湿法炼锌厂的主要特点是:锌精矿沸腾焙烧过程的余热用来生产40～60(公斤/厘米~2)的蒸汽;采用二次转化二次吸收制酸流程,使尾气含SO_2降 Over the past decade, the wet zinc refining process has been greatly developed. Especially since the seventies have been put into operation a number of wet zinc smelter, large output, more advanced technical indicators, high level of mechanization and automation. The main features of this type of zinc smelter: the heat of zinc concentrate roasting roasting process used to produce 40 to 60 (kg / cm ~ 2) of the steam; secondary conversion secondary absorption acid production process, the exhaust gas SO_2 down