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.
维普
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