摘要
为准确测定高品位氰化液体中金、银的含量,简化工艺流程,将活性炭纤维与锌粉两种材料相结合,对高品位氰化液体中的金、银进行分析检测。首先用活性炭纤维对高品位氰化液体中的金、银进行吸附。将吸附有金、银的活性炭纤维进行炭化、灰化,并用王水溶解灰分。对于剩余的含有少量金、银的氰化液体用锌粉进行还原,并用王水溶解还原渣。将两份王水溶液进行合并、定容,用ICP-AES进行测定,金的回收率为99.97%～100.01%,银的回收率为99.99%～100.06%(金银回收率超过100%是因为光谱设备在使用过程中由于使用的环境条件及标准系列存在一定程度的波动导致)。
In order to accurately determine the content of gold and silver in high-grade cyanide solution and simplify producing process,both of the activated carbon fiber and zinc powder were used to analyze and detect the gold and silver contents.Firstly,gold and silver in high-grade cyanide solution were absorbed by activated carbon fiber.Secondly,the activated carbon fiber was carbonized and the ash content was dissolved into aqua regia.The remaining cyanide solution with a little gold and silver was reduced by zinc powder and reducing residue was dissolved in aqua regia.Finally,determination was performed by ICP-AES after mixing the two aqua regia solutions.The recovery rates of this method were 99.97%-100.01%for gold,and 99.99%-100.06%for silver(The recovery rate of gold and silver exceeds 100%due to fluctuation of the environmental conditions and standard series during the use of the spectrum equipment).
作者
刘旭坤
朱宗波
李春
LIU Xu-kun;ZHU Zhong-bo;LI Chun
出处
《中国有色冶金》
CAS
2018年第5期56-60,共5页
China Nonferrous Metallurgy
关键词
化学分析
氰化液体
金、银
活性炭纤维
锌粉
chemical analysis
cyanide solution
gold and silver
activated carbon fiber
zinc powder
