A-21S和201×7树脂吸附处理氰化提金废水研究  

Study on Adsorption of Gold Cyaniding Leaching Wastewater by A-21S Resin and 201×7 Resin

作　　者：周军[1,2,3] 王丽君[1] 张华[1] 宋永辉[1,2,3] 党晓娥[1,2] 张秋利[1,2,3] 

机构地区：[1]西安建筑科技大学冶金工程学院,西安710055 [2]陕西省黄金与资源重点实验室,西安710055 [3]陕西省冶金工程技术研究中心,西安710055

出　　处：《有色金属（冶炼部分）》2015年第11期55-59,共5页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金青年基金项目(51204130);陕西省自然科学基础研究计划项目(2012JM7013);西安建筑科技大学基础研究基金项目(JC1212)

摘　　要：采用两步沉淀对某黄金冶炼厂含高铜、铁氰化提金废水进行降铜除铁预处理后,对滤液分别进行A-21S树脂和201×7树脂吸附对比试验。结果表明,A-21S树脂对废水中各离子的吸附率均高于201×7树脂,对金和锌络合离子的吸附率高达96%以上。A-21S树脂吸附过程中,Au(CN)2-对CNT-、Cu(CN)32-和Zn(CN)42-的分离系数SA/B平均值分别为56.69、25和0.051,选择性系数KA/B平均值分别为56.69、487.63和1.015。A-21S树脂吸附Au(CN)2-的选择性比CNT-和Cu(CN)32-强,而吸附Au(CN)2-和Zn(CN)42-的亲和力接近。体系中Zn(CN)42-的存在对A-21S吸附Au(CN)2-有竞争。High copper and iron bearing gold cyaniding wastewater from gold smelter was pretreated to reduce copper and iron cyanide by two-step precipitation. The filtrate was absorbed by A-21S resin and 201×7 resin respectively. The results show that the adsorption rate of A-21S resin for each ion in wastewater is higher than that of 201 × 7 resin, and the adsorption rate of A-21S resin for gold cyanide and zinc cyanide is as high as 96% above. In the adsorption process of A-21S resin, the average separation factor （SA/B） of Au（CN）2- for CNr- , Cu（CN）32 and Zn（CN）42-is 56.69,25 and 0. 051 respectively, and the average selective coefficient （KA/B） is 56.69,487.63 and 1. 015 respectively. The adsorption selectivity to Au（CN）2 of A-21S resin is stronger than to CNT- and Cu（CN）32-, and the affinity between Au（CN）2- and resin is close to Zn（CN）42 The existence of Zn（CN）4z in solution competes to Au （CN）2- adsorption by A-21S resin.

关 键 词：氰化废水 沉淀 树脂吸附 工艺对比 

分 类 号：X703[环境科学与工程—环境工程]