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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Alumina & Bauxite
Presentation Title The Impact of Backwater Iron Ions on Bauxite Flotation
Author(s) Chaojun Fang, Leming Ou, Qiming Feng, Shichao Yu, Jun Wang
On-Site Speaker (Planned) Chaojun Fang
Abstract Scope The effect of iron ions in backwater on the flotation of diaspore bauxite was investigated by ICP measurement, micro-flotation tests, zeta potential measurements and solution chemistry analyses. The concentration of iron ions in backwater was 1×10-5 mol/L by ICP measurement. The micro-flotation results indicated that iron ions activated the flotation of diaspore at pH 4 and depressed the flotation of diaspore at pH 7, while activated the flotation of kaolinite at pH 4-9. In particular, the flotation of kaolinite had a great increase in the presence of iron ions at pH 8-9, the pH value used in industry flotation. The iron ions were adsorbed on the mineral surface mainly in the formation of Fe(OH)3(s), it changed the zeta potential of minerals and modified the surface properties of minerals, then transformed the interaction between minerals and collectors, and finally affected the flotation of diaspore and kaolinite. The study might have some reference significance to the industry.
Proceedings Inclusion? Planned: Light Metals

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Alumina, Iron and Titanium Extracting from Bauxite Residue with Low Lime Sinter Method
Analyzing the Bauxite Residue Amendment through the Addition of Ca and Mg Hydroxides Followed by Carbonation
Comprehensive Utilization of Red Mud: Current Research Status and a Possible Way Forward for Non-hazardous Treatment
Developing New Process for Selective Extraction of Rare Earth Elements from Bauxite Residue Based on Functionalized Ionic Liquids.
Development and Usage of Detailed Models of Technology at RUSAL Alumina Refineries
Digital Transformation in Alumina Refining
Effect of Organic Impurity on Seed Precipitation in Sodium Aluminate Solution
Effect of Sintering Conditions on the Stability of β-2CaO·SiO2 in High Sodium Carbonate Solution
Effects of Reductive Roasting with Sodium Salts on Leaching Behavior of Non-ferrous Elements in Bauxite Ore Residue
Experimental Investigation on Desiliconization of Low-grade Bauxite by Flotation Process
Expertimental Investigation on Reduction of Cast Iron from Bayer Red Mud and Laterite Nickel
Features of Pseudoboehmite from Alumina Production
Fitness-for-service Assessment and Re-rating of Flawed Alumina Feeding Vessels
Flotation of Low-grade Bauxite Using Modified Humics as Depressant
Flotation Separation of Pyrite from Refractory High-sulfur Bauxite
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Industrial Experience of Sinter Hydro-chemical Processing at Bogoslovsk Alumina Refinery
Miniplant Tests of HCl Technology of Alumina Production
Research on Alumina Preparation from Aluminium Chloride Solution by Electrolysis Process
Research on Impurity Removal of Low Grade Bauxite
Research on the Adsorption of Humic Acid on Pyrite Surface
Research on the Desulfurization of High Sulfur Bauxite
Research on the Interaction between 1-butyl-2-mercaptobenzimidazole and Pyrite
Roasting Pretreatment- low Temperature Digestion Method for Comprehensive Utilization of High-sulfur Bauxite
Specific Features of Scandium Behavior during Sodium Bicarbonate Leaching of Red Mud
Study on the Structure and Generation Mechanism of Intermediate (6AlO-OH) in Decomposition Process of Sodium Aluminate Solutions
The Impact of Backwater Iron Ions on Bauxite Flotation
The Influence of Lime Reactivity on the Alumina Production
The Properties of Superfine ATH Precipitated by Carbonation Method
Thermodynamics Analysis on Process of Pelletizing Chlorination of Fly Ash

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