AC法处理高锑低银类铅阳极泥 ———铜和铋的回收
来源期刊：中南大学学报(自然科学版)2003年第5期
论文作者：唐谟堂 杨声海 唐朝波 韦元基
文章页码：499 - 501
关键词：铜;铋;硫酸铜;置换;浸出
Key words：copper; bismuth; copper sulphate; cement; leaching
摘 要：用AC法处理高锑低银类铅阳极泥,其干馏渣水浸液经两段置换、硫酸浸铜、稀盐酸浸铋,综合回收了铜、铋、锑,并使其得到了较大程度的分离,Cu,Bi和Sb的置换率分别为99.75%,96.74%和99.45%;置换渣含铜53.73%,含铋20.79%.用硫酸浸铜法,实现了铜-锑、铜-铋的有效分离,最终铜以硫酸铜产出,品位为93.74%~96.21%,Fe含量为1.13%~1.47%,回收率为93.33%;用稀盐酸浸出铋-锑渣,铋以含Bi 69.70%的铋精矿产出,直收率及总回收率分别为90.87%和94.73%,此外还产出Sb含量为36.21%的锑渣,返回氯化浸出过程,总回收率为94.06%.
Abstract: In order to recover value elements copper, bismuth and antimony in lead electrolysis refining anodic slime bearing high antimony and lower silver comprehensive, the process route is as follows: from the solution leached dry-distillation residue in AC process by water Cu, Bi and Cu were cemented with iron powders in two steps; copper was leached with a sulphuric acid solution from the residue, and bismuth was leached with dilution hydrochloric acid from the leached copper residue. The cemented ratio of Cu, Bi and Sb is 99.75%, 96.74%and 99.45% respectively, in the cemented residues containing Cu 62.26% and Bi 20.79%. The separation of copper from antimony and bismuth was realized by leaching copper with sulphate acid solution. Copper was used for production of copper suphate containing CuSO4·5H2O 93.74%~96.12% and Fe 1.13%~1.47% with recovery ratio of 93.33%. Direct recovery ratio of bismuth is 90.87% into a concentrate containing Bi of 69.70% and sum ratio is 94.73%. In addition, an antimony residue containing Sb of 36.21% was produced with recovery ratio of 94.06%.
