东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2013, Vol. 34 ›› Issue (7): 990-993.DOI: -

• 材料与冶金 • 上一篇    下一篇

基于田口法的生物浸出液萃铜工艺的优化

马致远，杨洪英，陈国宝，李海军   

  1. (东北大学材料与冶金学院，辽宁沈阳110819)
  • 收稿日期:2013-01-11 修回日期:2013-01-11 出版日期:2013-07-15 发布日期:2013-12-31
  • 通讯作者: 马致远
  • 作者简介:马致远(1988-)，男，江西南昌人，东北大学博士研究生；杨洪英(1960-)，女，河北张家口人，东北大学教授，博士生导师.
  • 基金资助:
    国家高技术研究发展计划项目(2012AA061502)；国家自然科学基金资助项目(51174062，51104036)；“十二五”国家科技支撑计划项目(2012BAE06B05).

Optimization of Extraction of Copper from Bioleaching Solution Based on the Taguchi Methods

MA Zhiyuan， YANG Hongying， CHEN Guobao， LI Haijun   

  1. School of Materials ＆ Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2013-01-11 Revised:2013-01-11 Online:2013-07-15 Published:2013-12-31
  • Contact: YANG Hongying
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摘要： 基于田口方法，提出了采用萃取剂LIX984N从高铁生物浸出液中萃铜工艺的优化方法，对萃取率及反萃率进行信噪比分析和方差分析.结果表明，萃取过程中，萃取剂体积分数和相比对萃取率的贡献率较大，分别达到32744%，34180%，时间为较重要因素，pH值对信噪比影响较小.优化后的工艺参数:萃取剂体积分数为30%，相比(V(O)/V(A))为2∶1，时间为600s，pH值为15；反萃过程中，相比及时间为显著因子，温度为不显著因子.优化后的工艺参数:相比(V(O)/V(A))为1∶2，时间为600s，反萃温度为30℃.在优化后的条件下进行萃取—反萃—电积实验，萃取率达到9991%，反萃率达到9856%，电流效率达到92594%.

关键词: 田口方法, 信噪比, 萃取, 反萃, 铜

Abstract: An optimization method of extraction of copper from bioleaching solution bearing high iron using LIX984N as an extractant was proposed based on Taguchi method for SNR (signal noise ratio) and variance analysis of the extraction rate and baciextraction rate. The results showed that in the process of extraction the extraction agent volume fraction and the phase ratio (V(O)/V(A)) were important factors affecting SNR ， and their contributions to the extraction rate reached 32744%， and 34180%， respectively. Extraction time was a significant factor to SNR while pH value was an nonsignificant factor in the extraction process. The optimized parameters of the extraction process were as follow:extraction agent volume fraction 30%， volume ratio of organic material to water 2∶1， extraction time 600s and initial pH value 15. The phase ratio (V(O)/V(A)) and baciextraction time were significant factors to SNR while temperature was an nonsignificant factor in the baciextraction process. The optimized parameters of the baciextraction process were as follow:volume ratio of organic material to water 1∶2， baciextraction time 600s， and temperature 30℃. Through extraction—baciextraction—electrodeposition experienments under the optimized processing condition， the extraction rate and baciextraction rate of copper reached up to 9991%， and 9856%， respectively， while the current efficiency reached up to 92594%.

Key words: Taguchi methods, SNR(signal noise ratio), extraction, baciextraction, copper

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