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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Recycling and Sustainability for Emerging Technologies and Strategic Materials
Presentation Title Hydrometallurgical Recycling of Bauxite Residue
Author(s) Himanshu Tanvar, Brajendra Mishra
On-Site Speaker (Planned) Himanshu Tanvar
Abstract Scope Alumina production through Bayer’s process results in generation of tremendous amount of toxic waste called red mud or bauxite residue. Production of 1 to 3 ton of alumina requires 3.3 to 6 ton of bauxite ore, which results in production of 1.5 to 4 ton residue. The annual production of bauxite residue reaching 120 million ton raises concern regarding handling, storage, and recycling. Presence of toxic heavy metals, high soda content, and fine particle size makes it detrimental for plant and life forms. Bauxite residue is rich in valuable metallic oxides of aluminum (5 – 40 wt%), iron (10 – 60 wt%), titanium (1 – 15 wt%), and rare earth (10 – 150 ppm). However, the complex structure and interlocking of different elemental phases make the separation process difficult. The following research is focused on hydrometallurgical recovery of different products (high purity magnetite, alumina, rare earth oxides) from bauxite residue.
Proceedings Inclusion? Planned:
Keywords Recycling and Secondary Recovery, Hydrometallurgy, Extraction and Processing

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Characterisation and Techno-economics of a Process to Recover Value from E-waste Materials
Computational Modeling of Current Density Distribution and Secondary Resistances for Aluminum Electrorefining in Ionic Liquids
Conductivity of AlCl3-BMIC Ionic liquid Mixtures Containing TiCl4 at Different Temperatures and Molar Ratios
Copper Separation from Steel Scrap
Copper Supply for Electric Vehicles and Impacts on the Recycling Sector
Development and Impact of High-performance Al Alloys Alloyed with Rare Earth Co-products
Ecodesign and Strategic Design of Alloys by Combinatorial Optimisation
Electrochemical Separation of Aluminum from Mixed Scrap Using Ionic Liquids
High-temperature Oxidation of Explosion Welded Tantalum-tungsten Alloy on Steel Substrate as a Potential Technique for Recycling
Hydrometallurgical Recycling of Bauxite Residue
Improvement of Steel Scrap Recycling: Optical Recognition of Cu Impurities Using Machine Learning
Investigation of Ionic Liquids Isolated Iron for Ductile Iron Castings
Rare Earth Magnet or Ferroalloy? What Steel Processing Can Teach Us about Magnet Sludge Recycling.
Recycling of Spent SCR Catalyst to Recover Vanadium and Tungsten by Hydrometallurgical Routes
The Separation of Nickel and Cobalt from Lithium-ion Battery Leachate
Uncertainty Analysis and Reduction for Environmental Impact Modeling of Emerging Manufacturing Technologies

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