Summary of Research Progress on Metallurgical Utilization Technology of Red Mud

Red mud is a highly alkaline solid waste discharged in the alumina production process. Because of its large amount of discharge and high alkalinity, it is mostly stored in dams, occupying a large number of land resources and posing a great safety hazard to the ecological environment. The large-scale...

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Published in:Minerals (Basel) 2023-06, Vol.13 (6), p.737
Main Authors: Li, Xiao-Fei, Zhang, Ting-An, Lv, Guo-Zhi, Wang, Kun, Wang, Song
Format: Article
Language:English
Subjects:
Alkaline wastes
Alkalinity
Alumina
Aluminium
Aluminum
Aluminum industry
Aluminum oxide
Bayer process
Building materials
Carbon
Caustic soda
Chemical industry
Construction materials
Discharge
Environmental protection
Extractive metallurgy
Herbicides
Highway construction
Iron
Land resources
Metals
Mineral resources
Mud
Pesticides industry
Pharmaceutical industry
Raw materials
Red mud
Refuse and refuse disposal
Scandium
Sodium
Solid wastes
Technology
Technology utilization
Titanium
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description Red mud is a highly alkaline solid waste discharged in the alumina production process. Because of its large amount of discharge and high alkalinity, it is mostly stored in dams, occupying a large number of land resources and posing a great safety hazard to the ecological environment. The large-scale consumption of red mud is a global technical problem. Different alumina production processes will produce different types of red mud, mainly Bayer process red mud. In addition to its overall utilization in the field of building materials, agriculture, the environment, and the chemical industry, red mud also contains valuable metal elements, such as titanium, iron, scandium, and aluminum, and is an important secondary mineral resource. This paper focuses on the principle and characteristics of red mud metallurgical treatment for the extraction of valuable components and looks forward to the prospect of large-scale, harmless, and high-value comprehensive utilization technology for red mud in China.
doi_str_mv 10.3390/min13060737
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subjects Alkaline wastes
Alkalinity
Alumina
Aluminium
Aluminum
Aluminum industry
Aluminum oxide
Bayer process
Building materials
Carbon
Caustic soda
Chemical industry
Construction materials
Discharge
Environmental protection
Extractive metallurgy
Herbicides
Highway construction
Iron
Land resources
Metals
Mineral resources
Mud
Pesticides industry
Pharmaceutical industry
Raw materials
Red mud
Refuse and refuse disposal
Scandium
Sodium
Solid wastes
Technology
Technology utilization
Titanium
title Summary of Research Progress on Metallurgical Utilization Technology of Red Mud
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