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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Alumina and Bauxite
Presentation Title Ionic Effect of NaCl and KCl on the Flotation of Diaspore and Kaolinite using Sodium Oleate as Collector
Author(s) Chaojun Fang, Shichao Yu, Hong Peng, Xiaowei Deng, Jun Wang
On-Site Speaker (Planned) Hong Peng
Abstract Scope The major type of bauxite in China is low-grade diasporic bauxite, which is mainly composed of diaspore and kaolinite. Desiliconization by flotation technology can meet the requirements of Bayer process, but Na+, K+ and Cl- will inevitably appear and affect the flotation of bauxite. The results of flotation show that NaCl and KCl have little effect on the flotation of diaspore, but NaCl have the effect of improving the flotation of kaolinite. It may be attributed to the ion size order Na+<K+<Cl-. Na+ has the ability to enter the gap of kaolinite layered crystal due to its smaller size, which increased the zeta potential and the electrostatic attraction force between kaolinite and oleate, and therefore improving the flotation of kaolinite. In addition, Na+ has salt effect on anionic collector, which also promoted the flotation of kaolinite. This study have reference significance to the industry flotation of diasporic bauxite.
Proceedings Inclusion? Planned: Light Metals

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Digital Refinery Approach to Process Troubleshooting and Improvements
A Review of Comprehensive Utilization of High-iron Red Mud of China
Application of Advanced Oxidative Process for Organic Compounds Removal from Bayer Liquor
Bayer Process Towards the Circular Economy – Metal Recovery from Bauxite Residue
Bayer Process Towards the Circular Economy – Soil Conditioners from Bauxite Residue
Brazilian Bauxite Residue Physical-chemical Characterization and Acidic Neutralization Potential
Conversion Behavior of Iron-containing Minerals in the Process of Dissolving High-iron Bauxite by Starch Hydrothermal Method
Disc Magnetic Separator Applied to the Extraction of Magnetite in Bauxite Residue
Effect of Concentrations and Pressures of CO2 on Calcification-Carbonation Treatment of Bauxite residue
Effects of the Granular Properties of Bauxite Pisolites on the Solid/Liquid Separation in Liquid Fluidized Beds of Classifiers
F-4: Investigation on Heat Resisting Cast Iron Produced Through Carbothermic Reduction of Alumina Residue (Bayer Red Mud)
Impacts of Mineralogy on Soluble Phosphorus Concentrations During Low Temperature Processing of Jamaican Bauxites
Improved Technology of Scandium Recovery from Solutions of Bauxite Residue Carbonation Leaching
Inhibition of Kaolinite Dissolution in Bayer Liquor Through Addition of Lithium
Ionic Effect of NaCl and KCl on the Flotation of Diaspore and Kaolinite using Sodium Oleate as Collector
Mineralogical Assessment of the Solid Phase Obtained on Leaching of Brazilian Red Mud
Quantifying the Effect of Seeds on Gibbsite Crystallization – Mathematical Modelling of Particle Size Distribution
Recovery of Iron from High-iron Bayer Red Mud by Smelting Reduction
The Alumina Technology Roadmap 4.0.

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