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Effect of Magnesium on Evolution of Oxide and Sulphide in Liquid Iron at 1873 K

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Abstract

To reveal the effects of magnesium on the evolution of oxide and sulphide inclusions in liquid iron, both thermodynamic calculations and deoxidization experiments were carried out. The samples extracted from the liquid iron were polished and analyzed by optical microscopy and scanning electron microscopy. The results showed that magnesium could modify oxide and sulphide inclusions simultaneously. Spherical MgO and irregular spinel inclusions were observed in the samples. The elongated MnS inclusions were replaced by small MgO • MgS or MgO • MgS • MnS complex inclusions, and the sulphides were distributed dispersively. The evolution mechanisms of inclusions were discussed comprehensively, and a proposed model for the formation of oxysulphide was set up.

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Authors and Affiliations

  1. Institute of Ferrous Metallurgy, Northeastern University, 110819, Shenyang, Liaoning, China

    Tong-sheng Zhang (Doctor), De-yong Wang (Doctor, Associate Professor) & Mao-fa Jiang

Authors
  1. Tong-sheng Zhang
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  2. De-yong Wang
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  3. Mao-fa Jiang
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Corresponding authors

Correspondence to Tong-sheng Zhang or De-yong Wang.

Additional information

Foundation Item: Item Sponsored by National Natural Science Foundation of China (50904017); Fundamental Research Funds for the Central Universities of China (N120502004, N120602005)

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Zhang, Ts., Wang, Dy. & Jiang, Mf. Effect of Magnesium on Evolution of Oxide and Sulphide in Liquid Iron at 1873 K. J. Iron Steel Res. Int. 21, 1073–1080 (2014). https://doi.org/10.1016/S1006-706X(14)60186-2

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  • DOI: https://doi.org/10.1016/S1006-706X(14)60186-2

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