【摘要】 研究了应用硫氰酸钾从CTAB - 30 %TBP (或 30 %正辛醇 ) -磺化煤油萃Au (Ⅰ )体系载金有机相的反萃取 ,以及反萃后的有机相的重复利用等。研究结果表明 ,应用 3mol/LKSCN能够将载金有机相中 (浓度为 3g/LAu) 90 %左右的Au反萃入水相 ,3级反萃率接近 1 0 0 %。有机相经过 5次循环利用后 ,对 1g/LAu溶液的萃取率基本无变化。反萃入水相中的Au可以用NaBH4还原回收。更多还原

【Abstract】 The method of stripping gold from CTAB-30% TBP(30% octanol)extraction system by KSCN and the reuse of the organic phase have been studied in this paper.The results show that 90% gold could be stripped from 3g/L gold-loaded organic phase by 3mol/L KSCN solution,and the stripping percentage is nearly 100% through stripping for three times .The extraction percentage for 1g/L gold solution changes little after five circulated extraction and stripping.The gold being stripped to aqueous phase can be reduced by NaBH 4.更多还原