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针对低硅铁水的冶炼问题,计算了不同硅含量的铁水在转炉炼钢吹氧时, 硅、碳氧化反应的?妓棺杂赡堞Si和ΔGC的变化规律,提出了以“氧化转化浓度”为界点的硅、碳选择性氧化的新模式。用此模式分析了低硅铁水对转炉炼钢造渣工艺的影响,确定了适用于转炉炼钢的铁水中[Si]的最佳含量。同时计算了不同碳含量对该“氧化转化浓度”的影响,提出了不同条件下界点浓度的计算公式,便于实际生产过程中的灵活操作。

In order to understand the essence of problems occurred in blowing low-silicon hot metal, the Gibbs energies of oxidation of [C] and [Si] were calculated at different [Si] concentration. A new concept of “oxidation transfer concentration” was proposed, which can indicate the critical point of selective oxidation of [Si] or [C] in hot metal. On the basis of this new concept, the influence of low silicon hot metal on steelmaking process was discussed, and the optimal [Si] concentration in low silicon hot metal was given. Furthermore, effect of [C] concentration on this “oxidation transfer concentration” of [Si] was also analyzed and formulated, which can be used to evaluate the oxidation transfer concentration in various conditions. Thus, it will be flexible to perform operation accordingly in practice.

参考文献

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