【摘要】 针对铅冶炼产出的高铅锌含砷烟尘成分复杂、难于处理的特点，采用浓硫酸预活化—浸出处理工艺，进行铅、锌的回收以及砷、镉等有害元素的脱除。考察预活化及浸出过程中各参数对烟尘浸出过程的影响。研究表明：当酸尘比为1 mL/g、预活化温度60℃、预活化时间2 h、硫酸浓度0.5 mol/L、液固比5 mL/g、浸出温度80℃、浸出时间2 h,搅拌速度400 r/min时，效果最佳，锌、砷、镉、铅的浸出率分别为98.64%、95.02%、95.26%和0.16%。更多还原

【Abstract】 Aiming at complex and difficult-to-handle characteristics of high-lead-zinc containing arsenic dust from lead smelting furnace, a concentrated sulfuric acid pre-activation leaching process was used to recover lead and zinc and remove harmful elements such as arsenic and cadmium.Effects of various parameters in pre-activation and leaching process on leaching of fume were investigated.The results show that leaching rate of zinc, arsenic, cadmium, and lead is 98.64%,95.02%,95.26% and 0.16%,respectively under the optimum conditions including ratio of acid to dust of 1 mL/g, pre-activation temperature of 60 ℃,pre-activation time of 2 h, sulfuric acid concentration of 0.5 mol/L,L/S of 5 mL/g, leaching temperature of 80 ℃,leaching time of 2 h, and stirring speed of 400 r/min.更多还原