ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
Regular Article
Effect of Alumina and Silica on the Reaction Kinetics of Carbon Composite Pellets at 1473 K
Hyunsik ParkVeena Sahajwalla
Author information

Volume 54 (2014) Issue 1 Pages 49-55

Full Text-HTML Download PDF (1283K) Email to author Contact us

The influence of compositional changes in the CaO–FeOt–(Al2O3) or (SiO2) ternary oxide system on the reaction kinetics of carbon composite pellet was investigated by Thermo-Gravimetric Analyzer (TGA) at 1473 K (1200°C). Measured CO and CO2 gas by Infrared gas analyzer and surface area change from BET analysis assisted with the reaction kinetics of carbon composite pellet. As a result, alumina increased the reduction rate of iron oxide by increasing surface area, while silica decreased reduction rate by lowering surface area of pellet samples. A modified reaction kinetic model considering both the Boudouard reaction and surface area variation was developed for a better explanation of reduction mechanisms occurring in carbon composite pellets.

Information related to the author
© 2014 by The Iron and Steel Institute of Japan
Previous article Next article

Recently visited articles