Adsorption of D311 resin on copper cyanide complex ions in gold cyaniding tail solution

被引：0
|
作者：
Zhou J. [1 ,2 ,3 ]
Zhang H. [1 ]
Wang L. [1 ]
Song Y. [1 ,2 ,3 ]
Dang X. [1 ,2 ]
Zhang Q. [1 ,2 ,3 ]
机构：
[1] School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an
[2] Key Laboratory of Gold and Resources of Shaanxi Province, Xi'an
[3] Research Centre of Metallurgical Engineering & Technology of Shaanxi Province, Xi'an
来源：
Xiyou Jinshu/Chinese Journal of Rare Metals | 2016年 / 40卷 / 04期
关键词：
Copper cyanide complex ions; D311; resin; Kinetics; Static adsorption; Thermodynamics;
D O I：
10.13373/j.cnki.cjrm.2016.04.011
中图分类号：
学科分类号：
摘要：
High copper bearing gold cyaniding tail solution was absorbed by D311 resin. The effect of adding amount of resin, adsorption time, temperature, and pH on the adsorption rate of the copper cyanide complex ions were investigated, as well as the adsorption characteristics from both thermodynamics and kinetics. The optimal condition of static adsorption was obtained. The results showed that the adsorption rate of copper cyanide complex ions was more than 98% by D311 resin adsorbing the leaching gold tail solution which was pretreated by copper sulfate under the following conditions: liquid-solid ratio (volume ratio of filtrate to resin) of 5:1, pH<9, room temperature and adsorption reaction time of 135 min. The adsorption process was in accord with Freundlich models and was a favorable adsorption. The controlling step of this adsorption speed was interacted by particle diffusion and chemical reaction. Adopting the pseudo-first-order kinetics model and the pseudo-second-order kinetics model to simulate the experimental data of adsorption kinetics, the results suggested that this process conformed to the pseudo-second-order kinetics model. The theoretical adsorption capacity was 12.6023 mg·ml-1, which was consistent with the equilibrium adsorption capacity measured. The adsorption rate constant was k=1.236×10-2 min-1. © Editorial Office of Chinese Journal of Rare Metals. All right reserved.
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页码：363 / 369
页数：6
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