材料期刊网

针对转炉复吹提钒存在供气能力不足，复吹寿命短，冶金效果不好等问题，开展了底吹透气砖结构优化、底吹供气系统优化设计、复吹提钒工艺研究及透气砖维护技术等技术的研究与应用，使提钒转炉底吹供气强度提高到0.10 Nm3/（min.t）以上，提钒复吹长寿化，复吹炉龄大幅提高到7455炉，复吹比100%，钒渣质量明显改善，渣中TFe降低了2.42个百分点，钒渣V2O5提高了1.65个百分点。

Contrary to the problem of BOF when extracting vanadium with multiple blowing technology such as supplying capacity is not enough、lifetime of multiple blowing is short、effect of smelting is poor, the optimization of structure of bottom blowing brick used to ventilating was developed, the system used to supplying gas was devised, the crafts of extracting vanadium with multiple blowing technology was developed as well as the protecting technology of brick used to ventilating was used. These made strength of gas supplying of BOF increased to at least 0.10 Nm3/（min.t）.The multiple blowing lifetime was extended, especially reached to 7455 stove. The proportion of multiple blowing reached to 100%. The quality of vanadium slag was improving obviously, such as the contents of TFe in vanadium slag was reduced 2.42% and the grade of V2O5 in vanadium slag was increased 1.65%.