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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Alumina & Bauxite
Presentation Title Recovery of Iron from High-iron Bayer Red Mud by Melting Reduction with Spent Cathode Carbon Block
Author(s) Xiaofei Li, Ting-an Zhang, Kun Wang, Guozhi Lyu, Xin Chen
On-Site Speaker (Planned) Xiaofei Li
Abstract Scope Red mud and spent cathode carbon block are two major solid wastes of the aluminum industry.In this study,an innovative method has been proposed for co-treatment of red mud and waste cathode carbon block to reuse carbon and recover iron by melting reduction.The effects of parameters such as temperature,alkalinity,reaction time and the CaF2 addition on the process were investigated.According to the experiment, the suitable reaction conditions were the reduction temperature of 1350℃, the alkalinity of 1.0, the reaction time of 30 minutes and the optimal CaF2 addition was 10g.The Fe recovery rate was 91.60% which can be directly used for electric furnace steelmaking.This work should help to improve the future large-scale, high-value and zero waste utilization of red mud.It was also of great significance for the harmless treatment of spent cathode carbon blocks and alleviating the shortage of iron ore resources in China.
Proceedings Inclusion? Planned: Light Metals


Fast Solution of Shrinking Core Model for Calcination Applications
Green Alumina: A Technological Roadmap
Potential of Alumochloride Technology for Production of Competitive Products
Recovery of Iron from High-iron Bayer Red Mud by Melting Reduction with Spent Cathode Carbon Block
Removal of Fluorine, Chlorine, Nitrogen from Aluminum Dross by Wet Process
Results of Metso: Outotec Calciner Optimizer Operation at CBA Alumina Calcination Plants

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