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Wear of the periclase-lime lining of steel teeming ladles in ladle desulfurization of steel

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Refractories Aims and scope

Conclusions

Wear of a periclase-lime steel teeming ladle refractory lining is a complex physicochemical process in which it is practically impossible to distinguish a predominant elementary direction of action of the molten slag and metal.

Replacement of liquid synthetic slags with solid slag-forming mixtures in ladle desulfurization of steel does not have a significant influence on wear of the lining working layer.

An increase in the amplitude and number of thermal cycles significantly increases formation of cracks in the refractory lining and, consequently, accelerates its wear. An increase in temperature gradient within the refractory layer significantly increases crack formation.

The presence of high-temperature contact of the periclase-lime lining working layer with strong deoxidizers accelerates its wear.

Reduction of the magnesium and calcium of the refractories by the carbon of the binder under ladle service conditions may occur only with escape of gaseous CO through the reinforcing layer and the joints of the refractory lining in special gas escape holes in the ladle shell.

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References

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Authors and Affiliations

  1. Azov Steel Combine, USSR

    A. P. Nagornyi, V. A. Sakhno, S. A. Nagornyi, E. N. Gadzhi & E. A. Ivanov

Authors
  1. A. P. Nagornyi
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  2. V. A. Sakhno
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  3. S. A. Nagornyi
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  4. E. N. Gadzhi
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  5. E. A. Ivanov
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Additional information

Translated from Ogneupory, No. 3, pp. 33–36, March, 1993.

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Nagornyi, A.P., Sakhno, V.A., Nagornyi, S.A. et al. Wear of the periclase-lime lining of steel teeming ladles in ladle desulfurization of steel. Refractories 34, 177–181 (1993). https://doi.org/10.1007/BF01283136

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