硼钙石强化转炉钒渣氧化焙烧的研究  

Vanadium Slag Calcium Roasting Process Enhanced by Borocalcite

作　　者：陶长元[1] 于永波[1] 刘作华[1] 杜军[1] 范兴[1] 

机构地区：[1]重庆大学化学化工学院,重庆400044

出　　处：《钢铁钒钛》2014年第4期6-13,共8页Iron Steel Vanadium Titanium

基　　金：国家自然科学基金(51074200);中央高校基本科研业务费跨学科类重大项目(CDJZR12228801)资助

摘　　要：转炉钒渣含有TiO2、Al2O3和硅酸盐,物料焙烧过程容易形成包裹钒铁尖晶石相,不利于低价钒的氧化转化,降低熟料钒化合物的浸出率。试验通过采用硼钙石作为添加剂,改善转炉钒渣钙法焙烧性能。结果表明,硼钙石可有效破坏含钒尖晶石相外层的硅酸盐,强化转炉钒渣钙法焙烧物相转化,从而降低焙烧过程温度,节约能耗。Converter vanadium slag contains TiO2,Al2O3 and silicate. It leads to the formation of coating layer outside the vanadium-iron spinel phase during the roasting process,which has adverse effects on the oxidization of low valence vanadium and decreases the leaching rate of clinker. In order to improve the roasting performances of the vanadium slag,borocalcite was used as additive in the roasting process. It shows that the borocalcite can effectively destroy the silicate coating layer outside the spinel phase and intensifies the phase transformation during the roasting process.

关 键 词：提钒 转炉钒渣 焙烧 硼钙石 

分 类 号：TF841.3[冶金工程—有色金属冶金]