METHOD FOR PREDICTING MANGANESE CONCENTRATION AT END POINT OF BLOWING IN CONVERTER

摘要

PROBLEM TO BE SOLVED: To predict Mn concentration in molten steel at the end point of blowing at a low cost and in a good accuracy in a converter blowing performing decarburize-refining of molten iron by top-blowing or bottom-blowing oxygen into the molten iron.;SOLUTION: When the decarburize-refining of the molten iron is performed by oxygen-blowing in the converter 1 holding the molten iron, the Mn concentration in the molten metal 5 and the temperature of the molten metal are measured at the same timing on and after the medium period during oxygen-blowing. Based on the actual measured value of the Mn concentration and the actual measured value of the molten metal temperature obtained with the measurements, the total Mn content in the converter is corrected, and based on the corrected Mn content, the Mn concentration in the molten steel at the end point of the oxygen-blowing is predicted.;COPYRIGHT: (C)2004,JPO