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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Alumina & Bauxite
Presentation Title Process Optimization for Diaspore Digestion Equilibrium Using Response Surface Methodology
Author(s) Zhengyong Zhang
On-Site Speaker (Planned) Zhengyong Zhang
Abstract Scope The high-temperature digestion process is well applied in china for alumina production from diapore, and digestion is the critical process for alumina plant. The present study attempts to extract alumina from diaspore using a synthetic caustic liquor. The effect of important parameters such as digestion temperature and caustic concentration were investigated and the process conditions were optimized using surface response methodology (RSM) based on central composite design (CCD). The different influence of digestion parameters were compared, and the digestion equilibrium equation for extraction of alumina from diaspore was identified. The model equation developed using RSM software shows good agreement with the experimental data, with a correlation coefficient (R2) ≥0.95. The characterization of sample before and after digestion was determined by X-ray diffraction (XRD).
Proceedings Inclusion? Planned: Light Metals

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Novel Process of Alumina Production from Low-grade Bauxite Containing Sulfur
Application of Tricalcium Aluminate Instead of Lime for the Recovery of Aluminum in Middle-low Grade Bauxite in Calcification-Carbonization Process
CFB Alumina Calciners - New and Future Generation Opportunities for Green Field Refineries
Characterization and Ore Dressing of Bauxite from Brazil
Characterization of Activated Alumina Production via Spray Pyrolysis
Chemical Alumina Preparation by Using High Alumina Content Fly Ash
Evolutional Development of Alkaline Aluminosilicates Processing Technology
I-1: A Study on Optimization of Processing Parameters for Synthesis of Calcium Hydroaluminosulfate Using Response Surface Methodology
Iron Separation from Bauxite through Smelting-reduction Process
Leaching Behavior of Alumina from Smelting Reduction Calcium Aluminate Slag with Sodium Carbonate Solution
Low Temperature Reduction of Hematite in Red-Mud to Magnetite
New Process Research on Aluminium Production from Non-traditional Aluminum Resource by Microwave Chlorination
Process Optimization for Diaspore Digestion Equilibrium Using Response Surface Methodology
Processing Diasporic Red Mud by the Calcification-carbonation Method
Recovery of Iron-, Titanium-bearing Constituents from Bauxite Ore Residue via Magnetic Separation Followed by Sulfuric Acid Leaching
Research of Flocculants and Dewatering Additives for Filtration of Red Mud
Security Disposal and Comprehensive Utilization of Bauxite Residues
Thermodynamic Analysis and Formation Law of Q Phase of Calcium Aluminate Clinker
Thermodynamic Behavior of Lime Desulfurization in Sodium Aluminate Solution

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