Acetic acid and aqueous chromium sulfate are made by waste chromic paste, which came from production of pregnenolone, acetate with steroid saponin, adopting new recorery technology.

• 简述了以薯蓣皂甙制取乙酸（孕甾）双烯醇酮所产生的高浓度含铬废浆为原料，采用综合回收工艺制备乙酸和液体硫酸铬的方法及工艺过程。