工程科学学报2017，Vol.39Issue(3)：383-388,6.DOI:10.13374/j.issn2095-9389.2017.03.010
次亚磷酸盐在电解铜氰废液同时回收铜和氰过程中的作用
Effect of hypophosphite during the recovery of copper and cyanide from high concentration copper-cyanide wastewater by electrodeposition
高腾跃 1刘奎仁 1韩庆 1徐滨士2
作者信息
- 1. 东北大学冶金学院,沈阳110819
- 2. 装甲兵工程学院装备再制造技术国防重点实验室,北京100072
- 折叠
摘要
Abstract
The recovery of copper and cyanide from high concentration wastewater was conducted by electrodeposition with high basicity. The effect of hypophosphite dosage and temperature on recycling copper and cyanide from wastewater was investigated. The linear cyclic voltammetry, potentiostatic electrolysis and X-ray diffraction analysis were used to research the anodic reaction and pre-cipitate phase, the mechanisms of cyanide decomposition and hypophosphite inhibition were also analyzed. The experiment of cyanide leaching of gold was done in residual liquid after electrolysis. The results indicate that the damage of cyanide is effectively suppressed by hypophosphite. The inhibitory effect is enhanced gradually with increasing temperature. The Cu2+ forming on the anode surface is the main reason to degrade cyanide. Hypophosphite restrains cyanide from degradation by preferential oxidation. The tail liquid has no effect on leaching of gold, and the copper-cyanide wastewater can be comprehensively recovered the valuable metals and cyanide by electrodeposition.关键词
废水处理/次亚磷酸盐/电沉积/回收Key words
wastewater treatment/hypophosphite/electrodeposition/recovery分类
矿业与冶金引用本文复制引用
高腾跃,刘奎仁,韩庆,徐滨士..次亚磷酸盐在电解铜氰废液同时回收铜和氰过程中的作用[J].工程科学学报,2017,39(3):383-388,6.
