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Process chemistry of basic oxygen stainless steelmaking

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Conclusions

The 46 experimental heats made in the 100-lb model furnace, and several heats made in the 81-ton Aliquippa basic-oxygen shop, have shown that:

  1. 1)

    A blowing practice for high-carbon hot metal has been developed.

  2. 2)

    The Cr-C temperature relationship at the end point is determined by thermodynamic relationships and is independent of the source of chrome or timing of the chromium addition, provided the material is in solution by the end of the oxygen blow.

  3. 3)

    Slag reduction was not studied in this program because the available equipment was not suited for effective mixing of slag and metal. A basic-oxygen shop designed for stainless-steel production should be engineered to allow good mixing of slag and metal during silicon reduction.

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Authors and Affiliations

  1. Jones & Laughlin Steel Corp., Pittsburgh, USA

    E. Aukrust (Research supervisor), P. J. Koros (Chief process metallurgist, Technical Services Div.) & H. W. Meyer (Associate director of research)

Authors
  1. E. Aukrust
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  2. P. J. Koros
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  3. H. W. Meyer
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Aukrust, E., Koros, P.J. & Meyer, H.W. Process chemistry of basic oxygen stainless steelmaking. JOM 18, 433–439 (1966). https://doi.org/10.1007/BF03378423

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