仲辛基苯氧乙酸萃取Fe(Ⅲ)的性能.PDF

223 矿　冶　工　程 Vol.22 №3 2002 9 MININGAN METALLURGICAL ENGINEERING September 2002 Fe (Ⅲ) 1 1 2 王艳芝, 韩树民, 李德谦 (1., 066004;2., 130022) 　:, ———(CA—12)Fe(Ⅲ)。 、、。 :、、 。 Fe(Ⅲ), ΔH=-2.21 kJ mol。 :;Fe(Ⅲ);; Performance of Extraction of Fe(Ⅲ)With Sec-Octylphenoxy Acetic Acid 1 1 2 WANG Yan-zhi , HAN Shu-min , LI De-qian (1.Department of Environmental and Chemical Engineering, Yanshan University , Qinhuangdao 066004, Hebei, China; 2.Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of pplied Chemistry , Chinese cademy of Sciences, Changchun 130022, Jilin, China) Abstract: y the method of solvent extraction, the extraction performance of Fe(Ⅲ)from HCl medium with a new kind of carboxylic extractant, ammonized sec-octylphenoxy acetic (CA—12)has been studied.The influence of extraction tempera- ture, aqueous equilibrium acidity, the beginning concentration of the extractant on extraction have been examined.The results show that the distribution ratio reduces as aqueous equilibrium acidity increases, the beginning concentration of extractant re- duces and extraction temperature reduces.The thermodynamic function of the process ΔH is calculated as -2.21 kJ mol. Key words:sec-octylphenoxy acetic acid;Fe (Ⅲ);HCl medium;extraction performance 　　, [3] 。 , 。 CA—12, , CA—12。 , :① , , 。、 , , , , CA—12 ;② pH (5) , 。CA—12 , , 。,