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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium REWAS 2022: Poster Session
Presentation Title Fe-Si Alloy Preparation and Alumina Extraction from Red Mud and Silica Fume via Vacuum Carbothermal Reduction
Author(s) Peng Wei, Wenzhou Yu, Hao Chen, Joseph Emmanuel Nyarko-Appiah
On-Site Speaker (Planned) Peng Wei
Abstract Scope With the increasing awareness of environmental protection, the disposal of solid waste such as red mud (RM) and silica fume (SF) has attracted widespread attentions. In this study, a novel method by recycling RM and SF simultaneously was proposed for preparing Fe-Si alloy and extracting alumina. The process is mainly composed of vacuum carbothermal reduction and magnetic separation. The results show that Fe-Si alloy was successfully synthesized during the vacuum carbothermal reduction and it was effectively separated during the magnetic separation. Additionally, after the magnetic separation, the non-magnetic portion mainly contains alumina and it can be a potential raw material to produce alumina by the Bayer process. This process could recycle RM and SF simultaneously, and almost no waste residue was generated. Therefore, it provided a clean and sustainable route for synergistic recycling of RM and SF.
Proceedings Inclusion? Planned:
Keywords Recycling and Secondary Recovery, Sustainability, Environmental Effects


Advanced Process of Waste Glass Bottle for the Production of Recycled Glass Aggregate and Cullet
Fe-Si Alloy Preparation and Alumina Extraction from Red Mud and Silica Fume via Vacuum Carbothermal Reduction
Geopolymers Made of Construction and Demolition Waste: Current Trends and Perspectives
KIGAM Technology for the Recovery of NdFeB Waste Magnet and Manufacturing Scraps
Recovery of Lithium from Black Cathode Active Materials of Discarded Lithium-ion Batteries (LIBs)
Recovery of Rare Earth Elements from Nd-Fe-B Magnet through Selective Chlorination Using Zinc Chloride
Recycling of Automobile Discarded Ceramic Converters for Pt-group Metals’ Recovery through Pressure CN-leaching
The Research Status and Progress on the Utilization of Coal Fly Ash: A Review

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