东北制药总厂在生产过程中每年排放醋酸锌废渣50多吨。该渣露天堆放,不仅气味难闻,而且被雨水淋湿后渣中的锌溶解排入下水道污染了水源。为消除废渣对环境的污染,该厂委托沈冶进行研究。根据有色冶金的基本原理与我厂的具体条件,我们采用了回转窑焙烧法回收废渣中的锌。 Northeast Pharmaceutical Factory in the production process each year more than 50 tons of zinc acetate waste residue. The slag piled in the open air, not only smell bad, but also by the rain wet zinc slag dissolved into the sewer polluted water. In order to eliminate the pollution of waste on the environment, the plant commissioned Shen Ye research. According to the basic principle of non-ferrous metallurgy and the specific conditions of our factory, we adopt rotary kiln roasting method to recover the zinc in the waste residue.