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A New Method for Measuring Kinetic Parameters of Nonisothermal Coke and Sinter Reaction under Different CO Concentrations

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Abstract

The gas–solid coupling reaction between sinter and coke was analyzed by the thermogravimetric method with a nonisothermal heating rate not fixed. The reaction was suitable for the relevant kinetic parameters of chemically controlled gas–solid reaction. The new method is applied to the gas–solid coupling reaction of ore and coke heated to 1200°C. In the calculation of the new method, the kinetic parameters of the coupling reaction between sinter and coke with large dosage and size are obtained by using the change of gas concentration in several groups of heating experiments and the introduction of model-free method (isoconversional method). The effectiveness of the new method is verified by comparing the results of nonisothermal kinetic experiments with the corresponding isothermal experiments.

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ACKNOWLEDGMENTS

The support of The National Natural Science Foundation of China (NSFC, Projects U1361212, 51704149, and 51634004) is broadly acknowledged for the funding of this work.

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Authors and Affiliations

  1. The Key Laboratory of Chemical Metallurgy Engineering of Liaoning Province, 114051, Anshan, Liaoning Province, China

    Jin Jin, Qi Wang & Song Zhang

  2. University of Science and Technology Liaoning, 114051, Anshan, Liaoning Province, China

    Jin Jin & Qi Wang

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  1. Jin Jin
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  2. Qi Wang
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  3. Song Zhang
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Correspondence to Qi Wang.

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Jin Jin, Wang, Q. & Zhang, S. A New Method for Measuring Kinetic Parameters of Nonisothermal Coke and Sinter Reaction under Different CO Concentrations. Coke Chem. 64, 256–270 (2021). https://doi.org/10.3103/S1068364X21060028

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