|
| Study on Adsorption of Gold Cyaniding Leaching Wastewater by A-21S Resin and 201×7 Resin |
|
Received:July 23, 2015
Revised:July 26, 2015
Accepted:July 27, 2015
Published Online:October 19, 2015
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2015.11.015 |
| KeyWord:cyaniding wastewater; precipitation; resin adsorption; technology contrast |
| Author | Institution |
| Zhou Jun |
西安建筑科技大学冶金工程学院 |
| Wang Lijun |
西安建筑科技大学冶金工程学院 |
| Zhang Hua |
西安建筑科技大学冶金工程学院 |
| Song Yonghui |
西安建筑科技大学冶金工程学院 |
| Dang Xiaoe |
西安建筑科技大学冶金工程学院 |
| Zhang Qiuli |
西安建筑科技大学冶金工程学院 |
|
| Hits: 1955 |
| Download times: 2317 |
| Abstract: |
| 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. The results show that the adsorption rate of A-21S resin for each ion in wastewater is higher than that of 201×7 resin respectively, 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 CNT-, 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)42- in solution competes to Au(CN)2- adsorption by A-21S resin. |
| Close |