论文部分内容阅读
Comparative studies on the extraction of Cu(Ⅱ) have been performed by 2-hydroxy-5-(1-methylheptyl) benzaldoxime (N-590) without or with n-dodecanol as modifier, 2-hydroxy-5- (1-metylheptyl) benzophenone oxime (N-510), and 2-hydroxy-4-(1-methylheptyloxy) ben-zophenone oxime (N-530). When the extraction is carried out in feed liquor containing Cu1.03 g/L and Fe 10.7 g/L by 0. 1 mol·dm~(-3) extractant in kerosene, the Cu percentage extrac- tion of 95.6, 89 and 63%, and Cu(Ⅱ)-Fe(Ⅲ) separation factor of 1.46×10~3, 4.76×10~2and 1.26×10~2 are obtained with N-590, N-530 and N-510, respectively; moreover the Cuextraction and stripping speed with N-590 is greatly higher than that with N-530 and N-510. Addition of 2% n-dodecanol into 0.1 mol·dm~(-3) N-590 in kerosene improved the strip-ping behaviour.
Comparative studies on the extraction of Cu (II) have been performed by 2-hydroxy-5- (1-methylheptyl) benzaldoxime (N-590) without or with n-dodecanol as modifier, ) benzophenone oxime (N-510), and 2-hydroxy-4- (1-methylheptyloxy) ben- zophenone oxime g / L by 0. 1 mol · dm -3 extractant in kerosene, the Cu percentage extrac tion of 95.6, 89 and 63%, and Cu (Ⅱ) -Fe (Ⅲ) separation factor of 1.46 × 10 ~ 3, 4.76 × 10 ~ 2 and 1.26 × 10 ~ 2 are obtained with N-590, N-530 and N-510, respectively; moreover the Cuextraction and stripping speed with N-590 is greatly higher than that with N-530 and N -510. Addition of 2% n-dodecanol into 0.1 mol · dm -3 (N-590) kerosene improved the strip-ping behavior.