Ke-qing Li, Shuo Ping, Hong-yu Wang, and Wen Ni, Recovery of iron from copper slag by deep reduction and magnetic beneficiation, Int. J. Miner. Metall. Mater., 20(2013), No. 11, pp. 1035-1041. https://doi.org/10.1007/s12613-013-0831-3
Cite this article as:
Ke-qing Li, Shuo Ping, Hong-yu Wang, and Wen Ni, Recovery of iron from copper slag by deep reduction and magnetic beneficiation, Int. J. Miner. Metall. Mater., 20(2013), No. 11, pp. 1035-1041. https://doi.org/10.1007/s12613-013-0831-3
Ke-qing Li, Shuo Ping, Hong-yu Wang, and Wen Ni, Recovery of iron from copper slag by deep reduction and magnetic beneficiation, Int. J. Miner. Metall. Mater., 20(2013), No. 11, pp. 1035-1041. https://doi.org/10.1007/s12613-013-0831-3
Citation:
Ke-qing Li, Shuo Ping, Hong-yu Wang, and Wen Ni, Recovery of iron from copper slag by deep reduction and magnetic beneficiation, Int. J. Miner. Metall. Mater., 20(2013), No. 11, pp. 1035-1041. https://doi.org/10.1007/s12613-013-0831-3
Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing, 100083, China
School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
Aiming at recovering iron from high-iron-content copper slag, this article introduced a combination technology of deep reduction and magnetic beneficiation, investigated the iron recovery efficiency and optimized the technical conditions. When coke powder with 86wt% fixed carbon was used as a reductant, iron was successfully extracted from the copper slag. Under the optimized condition of the coke powder content of 14wt%, the calcium-to-silicon mass ratio (Ca/Si) of 0.2, the roasting temperature of 1300℃, the roasting time of 3 h, the grinding time of 20 min, and the magnetic field intensity of 61 kA·m−1, the iron recovery rate of the copper slag can reach 91.82%, and the extracted iron powder has an iron grade of 96.21%. With the characteristics of high iron grade and low impurity content, the extracted iron powder can be used as high-quality raw materials of weathering steel.
Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing, 100083, China
School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
Aiming at recovering iron from high-iron-content copper slag, this article introduced a combination technology of deep reduction and magnetic beneficiation, investigated the iron recovery efficiency and optimized the technical conditions. When coke powder with 86wt% fixed carbon was used as a reductant, iron was successfully extracted from the copper slag. Under the optimized condition of the coke powder content of 14wt%, the calcium-to-silicon mass ratio (Ca/Si) of 0.2, the roasting temperature of 1300℃, the roasting time of 3 h, the grinding time of 20 min, and the magnetic field intensity of 61 kA·m−1, the iron recovery rate of the copper slag can reach 91.82%, and the extracted iron powder has an iron grade of 96.21%. With the characteristics of high iron grade and low impurity content, the extracted iron powder can be used as high-quality raw materials of weathering steel.
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