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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Alumina & Bauxite
Presentation Title I-1: A Study on Optimization of Processing Parameters for Synthesis of Calcium Hydroaluminosulfate Using Response Surface Methodology
Author(s) Wu Xianxi, Zhu Weidong, Lan Jun, Wu Song
On-Site Speaker (Planned) Wu Xianxi
Abstract Scope The synthesis rate of calcium hydroaluminosulfate, which has important effect on desulfurization and desilicon in alumina production, has been studied. On the basis of the analysis of the two-level multi factor test, the reaction temperature, reaction time (min), Na2SO4 concentration in solution and total alkali concentration, the significant factors affecting the synthesis of calcium hydroaluminosulfate have been screened out. Taking the significant factors as the study object, and by the central composite experimental design and response surface analysis to simulate the synthesis process, a prediction model of the synthesis rate has been got. The technological conditions are obtained by optimization as that: reaction temperature 75℃, reaction time 65min, Na2SO4 concentration in solution 40g/L and total alkali concentration 45g/L. Under this condition experiment, synthesis rate of calcium hydroaluminosulfate obtained was 69.72%, with the small difference from model prediction value 70.24%.
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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