| 摘要 |
<p>The present invention relates to a reduced slag ball pre-melt flux and to a method for manufacturing same, wherein a reduced slag ball pre-melt flux is manufactured for recycling ladle furnace reduced slag (LF slag), which is a waste product generated from the secondary refining process of a steel mill, by reducing the components of phosphorus (P), sulfur (S), etc. in a ladle furnace process to thereby be easily applied to the manufacture of clean steel. More particularly, the present invention relates to a reduced slag ball pre-melt flux for ladle furnace and to a method for manufacturing same characterized in that melted LF slag is manufactured in a ball shape with spherical particles by dropping melted LF slag from inside a slag pot onto a turn dish and by quenching melted LF slag during said dropping by atomizing high pressure gas from an atomizer nozzle, wherein the reduced slag ball pre-melt flux is characterized in that it uses an LF slag ball containing 12 wt% or less of SiO2, 35 to 66 wt% of CaO, 10 to 40 wt% of Al2O3, 10 wt% or less of MgO, 5 wt% or less of MnO, 10 wt% or less of T-Fe, and 1 wt% or less of TiO2 as main ingredients, and in that it uses an LF slag ball having a spherical shape of 0.9 to 1.0 sphericity, and having a particle size of 5.0 mm or smaller.</p> |
