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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Alumina & Bauxite
Presentation Title Experimental Investigation on Desiliconization of Low-grade Bauxite by Flotation Process
Author(s) Guihong Han, Hongyang Wu, Wenjuan Wang, Yanfang Huang, Yanfang Huang
On-Site Speaker (Planned) Guihong Han
Abstract Scope Low-grade bauxite resources are abundant in China . However, the high content of silica can not meet the production requirments of alumina. With diasporic high-silica bauxite from Henan province as experimental ore samples, sodium oleate as collector and humic acid as depressant, desiliconization experiments were conducted during the process of one roughing-one cleaning direct flotation in this work. The effects of flotation parameters on the alumina-silica ratio (A/S) and Al2O3 content were investigated. The optimum conditions for roughing stage are obtained as follows: humic acid dosage of 20 g/t, sodium oleate dosage of 700 g/t, particle size (content of particels below 0.074 mm) of 85 %, pH 9.0. And the dosage of humic acid and sodium oleate for cleaning-stage was a third of that in roughing-stage. The alumina content in the concentrate increases from 58.91 % to 65.05 %,while A/S rises from 3.27 to 7.97. This research can provid a promising application of low-grade bauxite for alumina production.
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 Properties of Superfine ATH Precipitated by Carbonation Method
Thermodynamics Analysis on Process of Pelletizing Chlorination of Fly Ash

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