Application of Economic Ironmaking Technology in Rizhao Steel Large-sized BF
Economic ironmaking technology is developed based on the system integration.It provides guidance for the iron-making production based on the theory of business,so as to hit the business target of ironmaking.When building a new 3000 m3 BF,Rizhao Steel optimizes the design of the furnace inner profile,and innovatively integrates the cutting-edge technolo-gies of different systems on the ground of its own raw material and fuel conditions and technical experience.Such an effort sets the stage for the economic blow-on operation and economic running of the furnace.By managing the quality of raw mate-rial and fuel,controlling gas flow distribution,activating furnace hearth,and optimizing slag phase,the furnace achieves long-term stable and smooth running under the economic smelting condition,and the production cost is reduced significantly.From January to August 2023,the comprehensive hot metal production cost of Rizhao Steel large-sized blast furnaces is 82 yuan/t less than that of the similar blast furnaces operated by domestic 25 steel producers.
large-sized blast furnaceeconomic ironmakingraw material and fueldesign of furnace inner profilegas flow distributionhot metal cost
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