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Navi, Nooshin, Karamoozian, Mohammad, Khani, Mohammad. (1402). Recovery of Iron from Bauxite Red Mud by Reduction Roasting Method. , 14(4), 1295-1305. doi: 10.22044/jme.2023.13138.2389
Nooshin Navi; Mohammad Karamoozian; Mohammad Reza Khani. "Recovery of Iron from Bauxite Red Mud by Reduction Roasting Method". , 14, 4, 1402, 1295-1305. doi: 10.22044/jme.2023.13138.2389
Navi, Nooshin, Karamoozian, Mohammad, Khani, Mohammad. (1402). 'Recovery of Iron from Bauxite Red Mud by Reduction Roasting Method', , 14(4), pp. 1295-1305. doi: 10.22044/jme.2023.13138.2389
Navi, Nooshin, Karamoozian, Mohammad, Khani, Mohammad. Recovery of Iron from Bauxite Red Mud by Reduction Roasting Method. , 1402; 14(4): 1295-1305. doi: 10.22044/jme.2023.13138.2389

Recovery of Iron from Bauxite Red Mud by Reduction Roasting Method

Journal of Mining and Environment
مقاله 15، دوره 14، شماره 4، دی 2023، صفحه 1295-1305    اصل مقاله (1.31 M)
نوع مقاله: Original Research Paper
شناسه دیجیتال (DOI): 10.22044/jme.2023.13138.2389
نویسندگان
Nooshin Navi1؛ Mohammad Karamoozian* 1؛ Mohammad Reza Khani2
1Faculty of Mining, Petroleum and Geophysics, Shahrood University of Technology, Shahrood, Iran.
2Research and Development Manager at Jajarm Alumina Company, Jajarm, Iran.
چکیده
Red mud is an important solid tailing with strong alkalinity that is obtained during the extraction of alumina in the Bayer process. The global reserve of red mud is more than 4 billion tons, and its disposal as tailing has always been a serious environmental problem. This tailing is considered as a potential source, due to its high content of valuable metal compounds including iron. In this research work, the extraction of iron in red mud is investigated by the method of reduction roasting. The main influencing factors are also investigated. These methods include reduction in muffle and tube furnace, and temperature, reduction agent, and additive type are as important factors. Reduction roasting of the samples in a tube furnace, with Argon gas and vacuum, a mixture of red mud, graphite, and sodium carbonate at 700–1000 °C results in the formation of Fe3O4. Magnetic measurements indicate that saturation magnetization increases from 0.239 to 38.205 emu/g due to the formation of Fe3O4. Applying the magnetic field intensity of about 1000 Gauss results in the iron recovery of 89.9%.
کلیدواژه‌ها
Red mud؛ Reduction-Roasting؛ Muffle furnace؛ Tube furnace؛ Vibrating Sample Magnetometer
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