转炉炼钢过程的精细化控制及协同优化

doi:10.13228/j.boyuan.issn0449-749x.20210586

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Abstract Converter steelmaking is a complex open system, which is affected by interaction of many factors simultaneously or alternately, such as multiple chemical reactions of different impurity elements or substances, continuous rising and control of temperature, inhomogeneous spontaneous stirring of molten pool, inhibiting liquid steel peroxidation during removal of impurity elements, fine operation and timing control in converter etc., its operation law within its space-time boundary is dynamic and nonlinear. The isolated system knowledge is not appropriate to reveal the transformation law from traditional single production output index to multi-objective coordination for production output, quality and environmental protection etc. The functional orientation of modern converter steelmaking should be focus on efficient and stable primary smelting of clean molten steel, and then combined with subsequent molten steel refining technique to meet the furnace-machine matching requirements of multi-heats continuous casting with high / constant drawing speed in the whole process. From vision of function positioning and related operations timing matching of converter steelmaking, the "point technique" containing furnace protection by slag splashing, efficient oxygen supply, molten pool uniform mixing, composition of molten steel matched with temperature, post stirring, rapid steel extraction and separation of slags and steel, efficient recovery of converter gas were discussed. It points out that the aim of above-mentioned "point technique" application should be focused on fine control effect, at the same time, it is necessary to meet the requirements of timing planning of converter steelmaking and collaborative operation of upstream and downstream processes, so as to ensure high quality, stable and smooth operation of the whole process, and constantly tap the ultimate potential of converter steelmaking.

Key words： converter steelmaking point technique fine control clean steel production rhythm match

Received: 23 September 2021

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	WANG Jie
	ZENG Jia-qing
	YANG Li-bin
	WANG Cheng-yi

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WANG Jie,ZENG Jia-qing,YANG Li-bin等. Fine control technology and its co-optimization of converter steelmaking[J]. Iron and Steel, 2022, 57(5): 55-63.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20210586 OR http://www.chinamet.cn/Jweb_gt/EN/Y2022/V57/I5/55

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