银电解过程中钯的回收

Recovery of Palladium from Silver Electrolysis Process

针对金银冶金过程中铂钯的分布特点,提出了采用黄药富集分离、氯钯酸铵—二氯二氨络亚钯联合沉淀、水合肼还原的方法从银电解阳极泥中回收钯的新工艺。结果表明,所得海绵钯纯度大于99.95%,直收率大于97%。该工艺具有选择性分离钯效果好、过程无需赶硝、产品质量稳定等优点。

According to the distribution characteristics of platinum and palladium in gold and silver metallur-gical process, an new technology for recovering palladium from silver electrolytic anode mud by selective enrichment and separation with C4HgOCSSNa, （NH4）2PdC16--Pd（NH4）2Cl2 joint precipitation, and hy- drazine hydrate reduction was presented. The results show that the purity of product sponge palladium is more than 99.95%; the direct recovery rate is over 97%. This process has the advantages of good selective separation of palladium, no removing nitrate in the process and stable quality of product.