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[1]闫茂群,陈云,李文婕,等.冶炼废水处理污泥中银浸出过程的反应动力学[J].武汉工程大学学报,2012,(4):27-31.
　YAN Mao\|qun,CHEN Yun,LI Wen\|jie,et al.On dynamics of leaching silver by ammonium thiocyante in treated sludge from nonferrous metal smelting waste water[J].Journal of Wuhan Institute of Technology,2012,(4):27-31.
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冶炼废水处理污泥中银浸出过程的反应动力学(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2012年4期
页码:
27-31
栏目:
资源与土木工程
出版日期:
2012-05-30

文章信息/Info

Title:
On dynamics of leaching silver by ammonium thiocyante
in treated sludge from nonferrous metal smelting waste water
文章编号:
16742869(2012)04002705
作者:
闫茂群; 陈云; 李文婕; 关洪亮; 李庆新; 余训民*
武汉工程大学环境与城市建设学院，湖北 武汉430074
Author(s):
YAN Mao\|qun; CHEN Yun; LI Wen\|jie; GUAN Hong\|liang; LI Qing\|xin; YU Xun\|min
School of Environment and Civil Engineering, Wuhan Institute of Technology,  Wuhan 430074，China
关键词:
冶炼废水; 污泥; 银; 浸出; 硫氰酸铵; 动力学 
Keywords:
 ; smelting waste water;  sludge;  silver;  leaching;  ammonium thiocyanate;  dynamics
分类号:
X705，X758
DOI:
-
文献标志码:
AAdoi:103969/jissn16742869201204007
摘要:
利用硫氰酸铵做浸出剂，对除砷、提铜后二次污泥中的银做了浸出试验研究，探讨了浸出剂浓度、反应时间及温度、氧化剂用量及固液比等影因素响，确定了最佳浸银工艺路线及工艺参数. 正交试验、单因素优化试验及放大试验表明：硫氰酸铵为95 kg/t、MnO2为68 kg/t、浸出温度25 ℃、液固比为25∶1、pH为2时，两次浸银的总浸出率可达95%.对提银反应动力学机理进行了研究，硫氰酸铵浸出反应级数为05，活化能为12574 kJ·mol-1，反应速率常数为：k=1883 e-12574/RT.
Abstract:
The experiment was carried out for leaching silver by using ammonium thiocyante  as leaching agent, and the effect of  leaching agent concentration, reaction time, temperature, the dosage of oxidant and  liquid\|to\|solid ratio on leaching efficiency was discussed. The optimal technique route and parameter was proposed. The orthogonal test, single factor optimized test and magnification test showed that when ammonium thiocyante was 95 kg/t, the dosage of manganese dioxide was 6.8 kg/t, leaching temperature was 25 ℃, liquid\|to\|solid ratio was 2.5∶1 and pH was 2, the total rate of silver leaching by twice was up to 95%. The dynamics mechanism of silver leaching was also investigated, and it was found that the leaching reaction order of  ammonium thiocyante was 0.5, activation energy was 12.574 kJ·mol-1, the reaction rate constant was k=1.883 e-12574/RT.

参考文献/References:

［1］Hongliang Guan，Xunmin Yu，Qingxin Li.The Dynamic and Leaching Study of Gold In Treated Sludge from Nonferrous Metal Smelting Waste Water［J］.Advanced Materials Research，2011，281：228-232.
［2］巫瑞中. 石灰-铁盐法处理含重金属及砷工业废水［J］. 江西理工大学学报，2006，27(3)：58-61.
［3］王进，孙家寿，余训民，等. 冶炼厂水处理污泥提铜除砷研究［J］. 武汉工程大学学报，2008，30(4)：54-56.
［4］刘远会，胡立嵩，余训民，等. 有色冶炼废水处理污泥的矿物学特征及砷化合物酸性浸出动力学研究［J］. 长江大学学报：自然科学版，2009，6(1)：154-157.
［5］Dicinoski G W, Gahan L R, Lawson P J. Application of the shrinking core model to the kinetics of extraction of gold(Ⅰ)，silver(Ⅰ）and nickel(Ⅱ）cyanide complexes by novel anion exchange resins［J］. Hydrometallurgy，2011，56：323-336.
［6］张文阁，李玉玲.氨性硫代硫酸盐法从多金属硫化物金精矿和含银黄铁矿中浸出金银的研究［J］.有色金属，1987，39(4):71-76.
［7］庞锡涛，张淑媛，徐琰.硫氰酸盐法浸取金银的研究［J］.黄金,1992,13(9):33-37.
［8］刘秉涛，庞锡涛.硫氰酸盐法浸取金银的热力学分析［J］.黄金，1995，16(3):40-42.

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