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本文对精炼过程的反应机理以及各种精炼设备的特性进行了分析、比较,建立了精炼过程物理、数学模型。模型中以传质容量系数 AsK 作为唯一可调参数,分别对顶吹转炉、底吹转炉、顶底复合吹炼转炉精炼过程吹炼末期进行了研究。结果表明:模拟计算所得[C]—[O]关系与实测结果具有较好的一致性;精炼过程随着熔池碳含量的下降,气相 CO 分压趋于减少;传质容量系数 AsK 可用以统一表征、比较各种精炼装置的搅拌、混合、传递特性;底吹转炉对低碳钢的冶炼最佳,顶吹转炉对中、高碳钢的冶炼有利,而顶底复合吹炼转炉兼有两者的优点。
In this paper, the reaction mechanism of the refining process as well as the characteristics of a variety of refining equipment were analyzed, compared to establish a refining process physics and mathematical model. In the model, the mass transfer coefficient (AsK) was the only adjustable parameter, and the end-blowing of the top-blowing converter, the bottom-blowing converter and the top-bottom compounding converter was studied respectively. The results show that the relationship between [C] and [O] obtained by simulation is in good agreement with the measured data. As the carbon content in the melt pool decreases, the partial pressure of gas phase CO tends to decrease. The mass transfer capacity Uniform characterization, comparison of various refining device mixing, mixing, transfer characteristics; bottom blowing converter for smelting the best low-carbon steel, top-blown converter, smelting high carbon steel is beneficial, while the top and bottom compound blowing converter both The advantages of both.