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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Pan American Materials Congress: Minerals Extraction and Processing
Presentation Title Reduction Kinetics and Characterization Study of Synthetic Magnetite Micro Fines
Author(s) Saikat Kumar Kuila, Ritayan Chatterjee, Dinabandhu Ghosh
On-Site Speaker (Planned) Ritayan Chatterjee
Abstract Scope The present work deals with the characterization of pure magnetite microfines (<5μm) and its hydrogen reduction. The structural and morphological properties of magnetite powder were analyzed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), nitrogen adsorption analysis by five points isotherm BET method, and scanning electron microscopy along with energy dispersive X-ray spectroscopy (SEM-EDS). The hydrogen reduction of the magnetite powder was carried out in a thermogravimetric analyzer (TGA) under a steady flow of hydrogen or hydrogen-argon mixture (to produce different partial pressures of hydrogen). The variables studied were reduction temperature (973-1273 K), hydrogen partial pressure (0.25-1 atm) and sample bed height (0.184-0.68 cm). The apparent activation energy was obtained as 22 kJ mol-1. The rate equations developed for the reaction system under study were applied to determine the rate controlling step. The reduction was found to be rate controlled by diffusion through the stagnant gas film enclosed above the sample inside the crucible. The true activation energy was calculated to be 9 kJ mol-1.
Proceedings Inclusion? Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)


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Comparative Study of Gas Reduction of Pure Zinc Ferrite and Zinc Ferrite Contained into Electric Arc Furnace Dusts
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Extraction of Gold from Sands and Slimes Tailings Dump from Mazowe Mine, Zimbabwe
Gold Recovery from Waste Solutions of PCB Gold Plating Process using Hydro Cyclone Reactor for Demonstration Study
Investigating the Dissolution Characteristics of Strontium Sulfide
Leaching of Spent Ni-Mo Hydrodesulphurization (HDS) Catalyst in Oxalic Acid Solutions
Novel Adsorbent from Iron Ore Concentration Tailings for Toxic Cationic Dye Removal from Water
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PAN-43: Effect of Ethylenediamine on Smithsonite Flotation
PAN-44: Electrochemical Preparation of Ti5Si3/TiC Composite from Titanium-rich Slag in Molten CaCl2
PAN-45: Kinetic Study on the Leaching of Vanadium-bearing Converter Slag with Dilute Sulfuric Acid
PAN-46: Leaching of Celestite Concentrate in Hcl Media with BACl2-NACl Addition
PAN-47: Mechanical Activation Strengthen the Leaching of Oxide-sulphide Zinc Ore
PAN-48: Production of Strontianite from Celestite Ore in Carbonate Media
PAN-49: Recovery of Zinc from Oxide–sulfide Zinc Ore through Oxidation and Chelation
PAN-50: The Direct Leaching of Micro-disseminated Gold Concentrate by Bromide Process and the Characterization of Leaching Products
Preliminary Analysis of the Application of Sensor Based Sorting on a Limestone Mine in the Region Cašapava do Sul, Brazil
Preparation Conditions and Performance of Nano/Amorphous Hybrid Oxide Coated Titanium Anode for Oxygen Evolution in Electrowinning
Preparation of High Grade Industrial Copper Compound from a Nigerian Malachite Mineral by Hydrometallurgical Process
Pressure Leaching of Hemimorphite in Ammonium Chloride Solution
Process of Improving the Flotation Using Ultrasonic Bombardment
Reduction Kinetics and Characterization Study of Synthetic Magnetite Micro Fines
Removal of Heavy Metals from Water with Nano-Sheet Molybdenite as Adsorbent
Study on Leaching Valuable Elements from Bayan Obo Tailings
Synthesis of AgCN Nanowire Membranes in Aqueous Solutions from Silver Dicyanide Ions
The Compact Flowsheet for Ore Comminution and Processing
Working Experience with the New WOX Plant to Treat Zinc Waelzoxide at ZGH Boleslaw SA, Poland

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