Oxidation behavior of artificial magnetite pellets

Han-quan Zhang; Jin-tao Fu

doi:10.1007/s12613-017-1442-1

Volume 24 Issue 6

Jun. 2017

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Han-quan Zhang and Jin-tao Fu, Oxidation behavior of artificial magnetite pellets, Int. J. Miner. Metall. Mater., 24(2017), No. 6, pp. 603-610. https://doi.org/10.1007/s12613-017-1442-1

Cite this article as:

Han-quan Zhang and Jin-tao Fu, Oxidation behavior of artificial magnetite pellets, Int. J. Miner. Metall. Mater., 24(2017), No. 6, pp. 603-610. https://doi.org/10.1007/s12613-017-1442-1

Han-quan Zhang and Jin-tao Fu, Oxidation behavior of artificial magnetite pellets, Int. J. Miner. Metall. Mater., 24(2017), No. 6, pp. 603-610. https://doi.org/10.1007/s12613-017-1442-1

Citation:

Han-quan Zhang and Jin-tao Fu, Oxidation behavior of artificial magnetite pellets, Int. J. Miner. Metall. Mater., 24(2017), No. 6, pp. 603-610. https://doi.org/10.1007/s12613-017-1442-1

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Research Article

Oxidation behavior of artificial magnetite pellets

Han-quan Zhang^1, and
Jin-tao Fu²

+ Author Affiliations

Corresponding author:
Han-quan Zhang E-mail: springt@139.com
Received: 9 November 2016; Revised: 30 December 2016; Accepted: 3 January 2017

Abstract

Abstract

The oxidation behavior of artificial magnetite pellets was investigated through measurements of the oxidation degree and mineralogical analysis. The results show that artificial magnetite pellets are much easier to oxidize than natural magnetite. The oxidation is controlled through two different reaction mechanisms. The oxidation of artificial magnetite is dominated by internal diffusion, with an activation energy of 8.40 kJ/mol, at temperatures less than 800℃, whereas it is controlled by chemical reaction, with a reaction activation energy of 67.79 kJ/mol, at temperatures greater than 800℃. In addition, factors such as the oxygen volume fraction and the pellet diameter strongly influence the oxidation of artificial magnetite:a larger oxygen volume fraction and a smaller pellet diameter result in a much faster oxidation process.
- artificial magnetite;
- pellets;
- oxidation;
- reaction mechanisms

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References

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