The present invention relates to a ladle slag deoxidizing agent for producing high-clean steel, and its object is to provide a method for producing a ladle slag deoxidizing agent capable of improving reproducibility of slag deoxidation and composition control and reducing deoxidization efficiency, To provide a brittle ladle slag deoxidizer.;In order to accomplish the above object, the present invention provides a ladle slag deoxidizer, comprising: an aluminum powder containing 50 to 90% of aluminum dross containing 50% or more of aluminum and 9 to 10% And 50% by weight of the total amount of the slurry.
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