Title

MODEL DEVELOPMENT OF ADDITIVES DISSOLUTION IN THE BOF PROCESS

Authorship

Carvalho, Daniel Augusto Godinho de; Schenk, Johannes; Castro, José Adilson

Carvalho, Daniel Augusto Godinho de

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Schenk, Johannes

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Castro, José Adilson

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DOI

10.5151/1982-9345-26951

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Abstract

Since the beginning of BOF process, slag formation has been subjected to extensive development. During the initial stages of the blow, fast slag formation is primordial for the process performance. This is mainly to allow oxidizing reactions, and also to protect the refractory. A modeling of BOF process for the purpose of process optimization requires precise knowledge concerning the dissolution of CaO and MgO based materials. Using this knowledge, the optimal process conditions can be ensured by a controlling of the slag formation during the converter steelmaking process. Taking into account an application of large amount of different raw materials, as well as location-specific process conditions, the characterization of the dissolution behavior of different additives is an important key to improve the technological process. Thereby, in the frames of this project, an appropriate model for slag formation is established and compared to operational results for a 330t BOF, operating at ThyssenKrupp CSA, Santa Cruz, Brazil.

Keywords

BOF, Slag, Flux, Dissolution, Modeling, Aço baixo carbono, Alumínio, Desoxidação parcial, Coque

Modeling, Low carbon steel, Aluminum, Partial deoxidation