转炉提钒复吹长寿技术研究与应用

来源期刊：钢铁2011年第2期

论文作者：李安林

文章页码：39 - 44

关键词：复吹提钒； 底吹透气砖； 复吹炉龄； 长寿化

Key words：extracting vanadium with combined blowing； brick used to ventilate； campaign life of BOF combined blowing converter； long lifetime

摘    要：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、复吹提钒工艺及透气砖维护等技术的研究与应用。研究及大量的应用结果表明:采用新技术后可使提钒转炉底吹供气强度提高到0.10m³/(min·t)以上,提钒复吹长寿化,复吹炉龄大幅提高到7 455炉,复吹比100%,钒渣质量明显改善,渣中w(TFe)降低了2.42%,钒渣w(V₂O₅)提高了1.65%。

Abstract: Focus on such the problems as low supplying capacity,short furnace life and poor smelting effect during extracting vanadium using combined blowing converter,the optimization of structure of bottom blowing brick used to ventilating was studied,the system used to supplying gas was implemented,and the crafts of extracting vanadium with combined blowing technology was developed as well as the protecting technology of brick used to ventilating was applied.The results show that strength of gas supplying of BOF is increased to at least 0.10 m³/(min·t).The combined blowing lifetime is extended,especially reaches to 7455 stove.The proportion of multiple blowing is reached to 100%.The quality of vanadium slag is improving obviously,such as the contents of TFe in vanadium slag is reduced 2.42% and the grade of V₂O₅ in vanadium slag is increased 1.65%,when all above-mentioned technology is applied.