科学研究

联系我们

  • 地 址:湖南省长沙市中南大学资源 循环研究院
  • 邮 编:410083
  • 电 话:0731-88876089
  • 联系人:李国钦 杜瑜敏
  • 邮 箱:csuzyxh@sohu.com

当前位置:首页 > 科学研究 > 科技论文 > 详情

Optimization on selenium and arsenic conversion from copper anode slime by low-temperature alkali

来源:本站 发布时间:2016年08月29日 作者:

Title: Optimization on selenium and arsenic conversion from copper anode slime by low-temperature alkali fusion process

Journal: Journal of Central South University, 2017

Authors: GUO Xue-yi, XU Zhi-peng, TIAN Qing-hua, LI Dong

Abstract: A process is proposed in this paper to convert and separate selenium and arsenic in copper anode slime (CAS) by low-temperature alkali fusion process. Central composite design (CCD) was employed to optimize the effective parameters, by which NaOH/CAS mass ratio, fusion temperature and fusion time were selected as the variables, and the conversion ratio of selenium and arsenic as responses. Second-order polynomial models of high significance and 3D response surface plots were constructed to show the relationship between the responses and the variables. Optimum area of > 90% selenium conversion ratio and > 90% arsenic conversion ratio is obtained by the overlaid contours as NaOH/CAS mass ratio of 0.65-0.75, fusion temperature of 803-823K, fusion time of 20-30min. The models are validated by experiments in the optimum area, and the results demonstrate that these models are reliable and accurate in predicting the fusion process.

Key word: Optimization, low-temperature alkali fusion, CAS, selenium, arsenic, CCD

 

 

 

 

 

友情链接: 中南大学 国家发改委 国家科学技术部 国家环境保护部 国家工业和信息化部 湖南省科技厅 中国有色网