Preface ix About the Editors xi Session Chairs xvii Rare Metal Processes Industrial Practice of Biohydrometallurgy in Zambia 3 J. Wang, H. Zhao, W. Qin, X Liu, and G. Qiu Industrial Oxygen and Its Advanced Application Technology for Hydrometallurgy Process 11 W. Zhongling, Z. Deliang, L. Yongguo, T. Le, Y. Qing, and T. Niehoff Electrochemical Removal Impurity of NaCl from LiCl-KCl Melts 19 B. Li, M. Shen, Y. Chen, and Q. Wang Modern Beryllium Extraction: A State-of-the-Art Kro 11 Reduction Plant 27 E. Vidal, J. Yurko, and K. Smith How to Recover Minor Rare Metals from E-Scrap 37 T. Nakamura Solvent Extraction of Cu2+ with Laminar Flow of Microreactor from Leachant Containing Cu and Fe 45 J. Feng, L. Chuanhua, P. Jinhui, Z. Libo, and J. Shaohua Precious Metals Extraction of Gold from a Low-Grade Double Refractory Gold Ore Using Flotation-Preoxidation-Leaching Process 55 Y. Yang, S. Liu, B. Xu, Q. Li, T. Jiang, and P. Lv Gold Extraction from a High Carbon Low-Grade Refractory Gold Ore by Flotation-Roasting-Leaching Process 63 Y. Yang, Z. Xie, B. Xu, Q. Li, and T. Jiang Gold Leaching from a Refractory Gold Concentrate by the Method of Liquid Chlorination 71 C. Li, H. Li, X. Yang, S. Wang, and L. Zhang The Effects of Common Associated Sulfide Minerals on Thiosulfate Leaching of Gold 79 Y. Yang, X Zhang, B. Xu, Q. Li, T. Jiang, and Y. Wang Hydro metallurgical Extraction of Precious, Rare and Base Metals Using an Oxidizing Acid Chloride Heap Leach 87 D. Dreisinger, N. Verbaan, C. Forstner, and R. Fitch Recovery of Platinum Group Metals Using Perovskite-Type Oxide 101 K. Nagai, H. Kumakura, S. Yanai, and T. Nagai Research on Process of Hydrometallurgical Extracting Au, Ag, and Pd from Decopperized Anode Slime 107 Y. Yang, W. Yin, T. Jiang, B. Xu, and Q. Li Rare Earth Metals Status of Separation and Purification of Rare Earth Elements from Korean Ore 117 J. Kim, H. Kim, M. Kim, J. Lee, and J. Kumar Optimization of Rare Earth Leaching 127 G. Wallace, S. Dudley, W. Gleason, C. Young, L. Twidwell, J. Downey, H. Huang, R. James, and E. Rosenberg Numerical Simulation of the Mass Transfer for Rare-Earth Concentrate in Leaching Process 135 T. Liu, Y. Sheng, T. Yang, B. Wang, L. Han, and Q. Liu Apatite Concentrate, A Potential New Source of Rare Earth Elements 145 T. Sun, M. Kennedy, G. Tranell, and R. Aune Rare Earth Elements Gallium and Yttrium Recovery from (KC) Korean Red Mud Samples by Solvent Extraction and Heavy Metals Removal/Stabilization by Carbonation 157 T. Thriveni, J. Kumar, C. Ramakrishna, Y. Jegal, and J. Ahn Rare Earth Element Recovery and Resulting Modification of Resin Structure 169 S. Dudley, M. Chorney, W. Gleason, E. Rosenberg, L. Twidwell, and C. Young Ultra High Temperature Rare Earth Metal Extraction by Electrolysis 177 B. Nakanishi, G. Lambotte, and A. Allanore Vanadium-Molybdenum-Tungsten A Novel Technology of Vanadium Extraction from Stone Coal 187 M Wang, X. Wang, and B. Li Mechanical Activation of Processing of Egyptian Wolframite 193 A. Abdel-Rehim and M. Bakr Leaching of Vanadium from the Roasted Vanadium Slag with High Calcium Content by Direct Roasting and Soda Leaching 209 X Yan, B. Xie, L. Jiang, H. Guo, and H. Li Solvent Extraction of Vanadium from Converter Slag Leach Solution by P204 Reagent 217 T. Zhang, Y. Zhang, G. Lv, Y. Liu, G. Zhang, and Z. Liu Effect of Solution Compositions on Optimum Redox Potential in Bioleaching of Chalcopyrite by Moderately Thermophilic Bacteria 225 H. Zhao, J. Wang, W. Qin, and G. Qiu Poster Session Research on Quality Improvement of Titanium Sponge by Process Optimization 231 L. Li, K. Li, Q. Miao, and C. Wang Recovery of Rare Earth Elements from NdFeB Magnet Scraps by Pyrometallurgical Processes 239 Y. Bian, S. Guo, K. Tang, L. Jiang, C. Lu, X Lu, and W. Ding Study on Electrolysis for Neodymium Metal Production 249 G. Lee, S. Jo, C. Lee, H. Ryu, and J. Lee Experimental Investigation of Recycling Rare Earth Metals from Waste Fluorescent Lamp Phosphors 253 P. Eduafo, M. Strauss, and B. Mishra Author Index 261 Subject Index 263