A Method For Preventing Adhesion Of Reclained Lump Steel In Cone Portion Of Converter

摘要

PURPOSE: A method for preventing metal from adhering onto the cone part of a converter is provided to prevent metal from adhering onto the cone part of the converter using oxidation heat due to reaction of oxygen with carbon monoxide gas in gas generated during blowing by blowing oxygen into the converter at a proper time. CONSTITUTION: In a method for manufacturing molten steel by blowing oxygen into a converter having the cone part, the method for preventing metal from adhering onto the cone part(11) of the converter comprises the steps of installing an oxygen supply nozzle at the cone part; and supplying oxygen into the converter through the oxygen supply nozzle(20) from an early stage of blowing to a time point when 20 to 30% of blowing is completed, wherein the oxygen supply nozzle is installed at one or more points of position of the cone part it corresponds to 82 to 95% of height from the bottom on the basis of the total height and at a plurality of points in the circumferential direction of the cone part(11), and oxygen is supplied into the converter through the oxygen supply nozzle(20) in the amount of 50 to 100 Nm¬3/min.