High-yield environment-friendly tin recovery process for anode mud

The invention discloses a high-yield environment-friendly tin recovery process for anode mud. The method comprises the following steps of S1, calcining the anode mud in a calcining device; S2, adding nitrobenzoic acid and hydrochloric acid into the calcined anode mud for oxidative leaching, and filtering and separating to obtain SnCl2 leachate; S3, adding sponge lead powder into the leachate obtained in the step S2 for an oxidation-reduction reaction, purifying a reacted solution through a purifying agent after the reaction is completed, and then filtering and separating out a purified solution; and S4, taking the solution in the S2 as an electrolyte, taking an inert electrode as a cathode and an anode, and depositing tin through electrolysis. The process solves the problems of low efficiency, serious pollution and the like of the existing anode mud tin recovery process. 本发明公开了一种阳极泥高收率环保锡回收工艺，方法步骤如下：S1：将阳极泥放入煅烧装置中进行煅烧；S2：向煅烧后的阳极泥中加入硝基苯甲酸和盐酸进行氧化浸出，过滤分离，得到SnCl2浸出液；S3：向S2的浸出液中加入海绵铅粉，进行氧化还原反应，反应结束后通过净化剂对反应后的溶液进行净