波兰公布了一项关于从炼铜过程中产生的含铅锡泥渣中回收锡和铅的专利№142653。专利提出的回收方法大致如下:把吹炼铜冰铜排出的烟尘,用硫酸加以浸出处理,以获得锌产物;同时产生的泥渣经2小时干燥后(100～115℃)进行破碎,并用气态氯在温度800～1100℃下氯化处理5～8小时,即可凝聚(<100℃)SnCl_4和 SnCl_2。氯化的残渣磨碎后,用 HCl 溶液(6.40～7.50%)在温度90～95℃,有力搅拌下进行浸出处理。把溶液冷却到20℃时可回收 Poland published a patent No. 142653 on the recovery of tin and lead from lead-containing tin sludge produced during copper refining. Patents proposed recovery methods are as follows: the copper blown copper blowing out of soot, leaching with sulfuric acid treatment to obtain zinc products; at the same time the resulting sludge after 2 hours of drying (100 ~ 115 ℃) crushing, and gas Chlorine can be agglomerated (<100 ° C) for SnCl_4 and SnCl_2 by chlorination at 800-1100 ° C for 5-8 hours. After the chlorinated residue is ground, it is leached with HCl solution (6.40-7.50%) at a temperature of 90-95 ° C with vigorous stirring. The solution can be recovered when it is cooled to 20 ° C