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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Alumina & Bauxite
Presentation Title Flotation Separation of Pyrite from Refractory High-sulfur Bauxite
Author(s) Wencui Chai, Guihong Han, Jiongtian Liu, Yanfang Huang, Huilan Chen, Zhen Yan
On-Site Speaker (Planned) Guihong Han
Abstract Scope The existence of pyrite results in high soda consumption, iron pollution of alumina oxide and pipeline corrosion in the utilization of high-sulfur bauxite during the production of Bayer alumina. The flotation desulfurization of high-sulfur diasporic bauxite with modified 2-mercaptobenzimidazole (MBI) collector was studied in this work. The effects of pulp pH, collector dosage, activator dosage and frother dosage on flotation performance (the sulfur content in concentrate and Al2O3 recovery) were examined. The results indicate that the sulfur in bauxite was successfully decreased through the reverse flotation. With an optimal condition of 10 % solid density, particle size of -74 Ám of 75 %, pulp pH 9, temperature 30 C, collector dosage of 120 g/t, copper sulfate dosage of 20 g/t, and terpenic oil dosage of 120 g/t, the recovery of Al2O3 reached to 77.58 %. The sulfur content of concentrate was decreased from 2.87 % to 0.66 %, with an aluminum to silicon ratio (A/S) increasing from 3.36 to 4.43.
Proceedings Inclusion? Planned: Light Metals


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 Utilization of Detailed Models of Technology at RUSAL Alumina Refineries
Digital Transformation in Alumina Refining
Effect of Sintering Conditions on the Stability of β-2CaOĚSiO2 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
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
Hide details for [<a href="/PM/PM.nsf/ApprovedAbstracts/6D8E7B24CEA9C1568525815D003F6EE8?OpenDocument">How Digitalization Can FHow Digitalization Can Further Improve Plant Performance and Product Quality - Outotec Pretium Advisory Tool for Alumina Calcination
[Replication or Save Conflict]
Industrial Experience of New Sinter Hydro-chemical Processing Process at BAZ-SUAL
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 Digestion 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 Properties of Superfine ATH Precipitated by Carbonation Method
Thermodynamics Analysis on Process of Pelletizing Chlorination of Fly Ash

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