Mathematical Analysis of the Reduction of Wuestite at Different Basicity Using Factorial Design

Numerical prediction is performed on the reduction of wuestite under simulated blast furnace conditions using factorial design approach. Wuestite sinter samples with different basicity (0.5, 1.0, and 2.0) are reduced with a gas mixture consisting of 30% CO, 10% H sub(2) , 5% CO sub(2) , and 55% N su...

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Bibliographic Details
Published in:Journal of metallurgy 2014-01, Vol.2014
Main Author: Mousa, E A
Format: Article
Language:English
Subjects:
Basicity
Factorial design
Mathematical models
Matlab
Metallurgy
Numerical prediction
Reduction
Silicon dioxide
Online Access:Get full text
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Summary:Numerical prediction is performed on the reduction of wuestite under simulated blast furnace conditions using factorial design approach. Wuestite sinter samples with different basicity (0.5, 1.0, and 2.0) are reduced with a gas mixture consisting of 30% CO, 10% H sub(2) , 5% CO sub(2) , and 55% N sub(2) at 950-1100 degree C. In all cases, the reduction degree of wuestite increased with basicity and temperature. A 2 super(3) factorial design is applied to derive a regression model based on the experimental data of acidic (CaO/SiO sub(2) = 0.5) and basic (CaO/SiO sub(2) = 2.0) wuestite which is reduced at 950 degree C and 1100 degree C for 5 and 35 min. The developed mathematical model is applied to predict the reduction degree of wuestite at different basicity (0.5, 1.0, and 2.0), interval of time (5-35 min), and temperatures (950, 1000, 1050 degree C, and 1100 degree C). In general, the results of the driven models are found to be in good agreement with the experimental data of reduction of wuestite in many cases. The MATLAB program is used to carry out the required calculations.
ISSN:1687-9465
1687-9473
DOI:10.1155/2014/201659