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In order to enhance the slag formation and the hot metal dephosphorization, a behavior of reaction using a sintered agent containing Al2O3 has been investigated. A new reaction model based on the coupled reaction model considering not only the rate of mass transfer and chemical reaction but also the rate of slag formation has been developed. The rate of dephosphorization was improved and phosphorous content in the hot metal was lowered in shorter treatment time by the sintered dephosphorization agent containing Al2O3 due to the enhanced slag formation. The reaction model described the behavior of dephosphorization reaction well in both cases using sintered and non-sintered dephosphorization agents.
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Ishikawa et al. (2005) studied this question.
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