Practice of Top Blowing-Bottom Purging with Full Campaign in Converter
TAN Xiyang
ZHANG Lifeng
CUI Hui
ZHANG Long
QUAN Yong
LEI Zhongxing
Abstract：By adjusting the distribution of bottom purging position,designing the bottom shape,optimizing steelmaking operations,and dynamically controlling the bath level,the service life of 230 tons converter with combined bottom purging were achieved at 7 525 heats.An average tapping carbon of 0.042％and tapping temperature of 1 644 ℃ in the 230 tons converter.The CO product is controlled at 0.002 27,and the oxygen content in molten steel is reduced from 595 × 10-6 to 546 × 10-6.The oxygen consumption per ton of steel in the entire campaign has decreased by 1.9 m3.The blowing duration has been reduced by 33 seconds.
Keywords：convertergas supply plugcarbon-oxygen productoxygen content
Publication Date：2024-06-20
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：3( 5-6,11 )