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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Alumina & Bauxite
Presentation Title Extraction of Alumina from the Magnetic Separation Tailings Derived from Reductive Roasting of Red Mud
Author(s) Guanghui Li, Bona Deng, Jinghua Zeng, Zhuoxuan Li, Tao Jiang
On-Site Speaker (Planned) Guanghui Li
Abstract Scope Much work has been done to recycle iron from red mud via reductive roasting-magnetic separation process, of which more than 85% iron could be recycled as powdered metallic iron, but insufficient efforts have been made to utilize the magnetic separation tailings which were rich in valuable components like aluminum, titanium etc. This study was therefore focused on the alumina recovery from the above-mentioned tailings based on alkali leaching. The effects of the parameters like concentration of leaching agent (NaOH), temperature and time to the extraction of alumina have been investigated. Besides, the influence of the up-stream reductive roasting process and sodium additives on the extraction of alumina have also been studied. The results showed the reductive roasting process was favorable to the extraction of alumina while the sodium additives demonstrated an adverse effect. 82.9% alumina were leached under the optimal conditions from a red mud containing 19.59 wt.% Al2O3.
Proceedings Inclusion? Planned: Light Metals Volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Alkalinity Precipitation Measurement on Carbonation of Bauxite Residue
An Improved Lime Sinter Process to Produce Al2O3 from Low-grade Al-containing Resources
Effect of Different Silica Mineral Compositions on the Digestion Results in Bayer Process
Effect of Lime Addition during Digestion on Stability of Digested Liquor of Diasporic Bauxite
Extraction of Alumina from the Magnetic Separation Tailings Derived from Reductive Roasting of Red Mud
Going FAR (Floating Alumina Refinery)
Industrial Implementation Characteristics of Aluminates Liquor Low-temperature Desilication Technology
Influence Factors of Stirring Speed of Self-stirring Tubular Reactor Used in Bauxite Digestion Process
Investigation of Flotation Behaviors of Refractory High Silica Bauxite
Leaching Kinetics for Recovering Alumina from Waste Tricalcium Aluminate Generated after Filtration of Bayer's Liquor
Reaction Behavior and Conversion of Anatase in Alumina Production Process with Calcification-carbonization Method
Research on Activated Alumina Obtained by Spray Pyrolysis Method
Study on Effective Extraction of Al and Fe from High-iron Bauxite through “Calcification-carbonization” Method
Study on the Influence of Chemical Additives during the Digestion of Bauxite
Sustaining Capital of Alumina Refinery Projects – Important but Unloved
Ways to Improve of Aluminium Content Raw Material Treatment by Sintering Method

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