|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Alumina & Bauxite
||Recovery of Iron from High-iron Bayer Red Mud by Melting Reduction with Spent Cathode Carbon Block
||Xiaofei Li, Ting-an Zhang, Kun Wang, Guozhi Lyu, Xin Chen
|On-Site Speaker (Planned)
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.
||Planned: Light Metals