BLOWING METHOD OF CONVERTER

摘要

The present invention relates to a blowing method of a converter which improves a primary blowing pattern during converter operation to prevent injecting supplementary material due to a lack of heat source during secondary blowing. The blowing method of a converter includes strengthening desiliconization in the converter from a starting point of blowing to a point in which blowing is 15% complete (S10); and strengthening dephosphorization from the point in which blowing is 15% complete to a point in which blowing is 20% complete, wherein a flow rate of top-blowing is maintained as 102 Nm3/hr-Ton and a flow rate of low-blowing is maintained as 7.1 Nm3/hr-Ton in the step of strengthening desiliconization (S10), and the flow rate of top-blowing is maintained as 65 Nm3/hr-Ton and a flow rate of low-blowing is maintained as 8.8 Nm3/hr-Ton in the step of strengthening dephosphorization (S20).