Optimization of separation processing of copper and iron of dump bioleaching solution by Lix 984N in Dexing Copper Mine

• Published in: Transactions of Nonferrous Metals Society of China Vol. 18; no. 5; pp. 1258 - 1261
• Main Author: 刘清明 余润兰 邱冠周 方正 陈爱良 赵中伟
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.10.2008; Key Laboratory of Biometallurgy, Ministry of Education, Central South University, Changsha 410083, China; School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China%Key Laboratory of Biometallurgy, Ministry of Education, Central South University, Changsha 410083, China; School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China%School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China
• Subjects: bioleaching solution; copper solvent extraction; Lix 984N; processing optimization; 加工最优化; 生物浸取; 选矿方法; 铜溶剂萃取; copper solvent extraction; processing optimization; Lix 984N; bioleaching solution
• ISSN: 1003-6326
• DOI: 10.1016/S1003-6326(08)60213-7

The effects of the concentration of Lix 984N, phase ratio, initial pH value of aqueous phase and extraction time on the extraction of copper and iron under the condition of low Cu^2＋/Fe^3＋ ratio in dump bioleaching solution of Dexing Copper Mine were explored. The optimal conditions of extraction are as follows： the concentration of Lix 984N 10%; the phase ratio （O/A） 1：1; the initial pH value of aqueous phase 1.5 and the mixing time 2 min. The stripping experiments show that H2SO4 solution could efficiently recover copper from the organic phase under the optimal conditions.