摘要
用硫脲溶液从载金Ｐ－９５０哌啶树脂解吸金的动力学研究表明，该解吸金的动力学符合Ｂｏｙｄ液膜扩散方程，解吸金的速率随盐酸浓度的增加而下降；当温度上升时，解吸金的速率增加；提高硫脲浓度，有利于金的解吸。测得的液膜扩散系数Ｋ＝４．２４×１０－４ｓ－１，解吸表观活化能Ｅａ＝４１．７９ｋＪ／ｍｏｌ。
Kinetics of gold desorption with a new resin(P-950) in acidic thiourea solution was investigated.The experimental results demonstrated that the desorption of auric-thiourea com￣plex fromthe resin can be describedbyBoyd’s diffusion equation of liquid film.The desorption rate of gold reducedremarkably with the increase of HCl concentration.The increace of thioureaconcentration and temperature accelerated the desorption of auric-thioureacom￣plex.The distribution coefficient of the desorption K was4.24×10-4s-1 and the apparent activation energy of the desorption E awas 41.79kJ/mol.
出处
《有色金属》
CSCD
1996年第4期54-57,共4页
Nonferrous Metals
基金
国家自然科学基金
