公开(公告)号：US5366715A

公开(公告)日：1994-11-22

申请号：US138024

申请日：1993-10-19

申请人： David B. Dreisinger ,  Brenna J. Y. Leong

发明人： David B. Dreisinger ,  Brenna J. Y. Leong

IPC分类号： B01D15/00 ,  B01D15/04 ,  C01B17/90 ,  C01G25/00 ,  C01G30/00 ,  C22B3/42 ,  C22B30/02 ,  C22B30/06 ,  C02F1/42 ,  C25C1/14

CPC分类号： C01B17/908 ,  Y10S204/13 ,  Y10S210/912

摘要： The present invention is concerned with a method for selectively removing antimony and bismuth from an impure sulphuric acid solution containing at least 50 g/L of acid and some concentration of ferric ion (for example copper refinery electrolyte), is disclosed. The method involves contacting the impure solution with a sufficient quantity of finely divided metallic copper so as to prereduce all ferric ion present in the solution to the ferrous oxidation state. The prereduced solution is then contacted with a chelating resin. The method avoids the deleterious loading of ferric iron onto the ion exchange resin and prevents the return of excessive amounts of chloride ion with the purified electrolyte.

摘要翻译： 本发明涉及从含有至少50g / L的酸和一些浓度的铁离子（例如炼铜电解液）的不纯的硫酸溶液中选择性地除去锑和铋的方法。 该方法包括使不纯溶液与足量的细碎金属铜接触，以便将溶液中存在的所有铁离子预还原至亚铁氧化态。 然后将预还原的溶液与螯合树脂接触。 该方法避免了铁离子在离子交换树脂上的有害负载，并防止了过量的氯离子与纯化电解质的返回。