基于田口法的生物浸出液萃铜工艺的优化  

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

作　　者：马致远[1] 杨洪英[1] 陈国宝[1] 李海军[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2013年第7期990-993,共4页Journal of Northeastern University(Natural Science)

基　　金：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)

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600 s,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600 s,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%.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 600 s 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 600 s,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%.

关 键 词：田口方法 信噪比 萃取 反萃 铜 

分 类 号：TF111.3[冶金工程—冶金物理化学]