【摘要】 本文在25±1℃下用分配法考察了P₅₀₇—煤油从硫酸盐介质中萃取Co（Ⅱ）Ni（Ⅱ）、Mg的机理。求得其萃合物组成分别为CoA₂·2HA,NiA₂·4HA,MgA₂·3 HA;表观萃取平衡常数K_1,2^CO=10^-6·27,K_1,4^Ni=10^-7·14和K_1,3^Mo=10^-6·30。革取反应为下式所示的阳离子交换反应:■考察萃取分离条件的结果表明,在适当的金属离子浓度比时,PH对分离系数有较大影响而温度的影响不明显。更多还原

【Abstract】 The extraction mechanism of Co（Ⅱ） . Ni（Ⅱ） and Mg from the sulfate solution with HEH[EHP] in kercsene has been studied at 25±1 ℃. The compositions of the extracted species were found to be CoA₂· 2HA, NiA₂· 4HA and MgA₂·3HA respectively, and the apparent extraction equilibrium constants were obtained as The extraction equilibriua could be represented by the following general equation:■Thus the extraction mechanism of the systems studied was found to be cation-exchangc.The condilions of extraction separation of Co （Ⅱ）/Mg and Mg/Ni （Ⅱ） have also been studied.更多还原