| 炼铜烟灰碱浸脱砷的热力学及动力学 |
| |
| 引用本文： | 吴玉林,徐志峰,郝士涛. 炼铜烟灰碱浸脱砷的热力学及动力学[J]. 有色金属(冶炼部分), 2013, 0(4): 3-7 |
| |
| 作者姓名： | 吴玉林 徐志峰 郝士涛 |
| |
| 作者单位： | 1. 铜陵有色集团控股有限公司技术中心,安徽铜陵,244000
2. 江西理工大学冶金与化学工程学院,江西赣州,341000 |
| |
| 基金项目： | 江西省自然科学基金资助项目(20122BAB20602) |
| |
| 摘 要： | 基于热力学计算,绘制了常温(298K)条件下Me-S-H2O系(Me:Cu,Pb,Zn,As)Eh-pH图,并对pH=13～15时As2S3、CuS、Cu2S、PbS、ZnS热力学稳定区进行分析。结果表明,在碱浸体系中,砷与铜、铅、锌等有价金属的分离在热力学上是可行的。基于NaOH与(NaOH+Na2S)两种体系中砷的浸出行为研究,为提高铜烟灰碱浸脱砷效率,选择(NaOH+Na2S)浸出体系是适宜的。在该体系中,在303～363K范围内,铜烟灰中砷的浸出过程受内扩散控制,浸出动力学方程遵循未反应收缩核模型。
|
| 关 键 词： | 炼铜烟灰 砷 碱浸 热力学 动力学 |
| 收稿时间： | 2012-10-30 |
| 修稿时间： | 2012-10-30 |
Thermodynamics and Kinetics of Alkaline Leaching of Arsenic in Copper Smelting Dust |
| |
| WU Yu-lin,XU Zhi-feng and HAO Shi-tao. Thermodynamics and Kinetics of Alkaline Leaching of Arsenic in Copper Smelting Dust[J]. Nonferrous Metals(Extractive Metallurgy), 2013, 0(4): 3-7 |
| |
| Authors: | WU Yu-lin XU Zhi-feng HAO Shi-tao |
| |
| Affiliation: | Technology Center,Tongling Nonferrous Metals Group Holding Co,Ltd,, |
| |
| Abstract: | Eh-pH diagram of Me-S-H2O system (Me: Cu, Pb, Zn, As) at 298 K was plotted and the stable area of As2S3, CuS, Cu2S, PbS and ZnS was analyzed in the pH field of 13~15 based on thermodynamic calculation. The results show that separation of arsenic from copper, lead and zinc in alkaline leaching is feasible in terms of thermodynamics. The leaching behavior of arsenic in NaOH and NaOH Na2S system was studied respectively and the results show that NaOH Na2S system is appropriate for the removal of arsenic by alkaline leaching. The dissolution of arsenic in this system under the temperature of 303~363 K is controlled by inner diffusion and its leaching kinetic equation follows the unreacted shrinking core model. |
| |
| Keywords: | copper smelting dust arsenic alkaline leaching thermodynamics kinetics |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《有色金属(冶炼部分)》浏览原始摘要信息 |
|
点击此处可从《有色金属(冶炼部分)》下载免费的PDF全文 |
|
