直筒炉冶炼钒铁钒收率影响因素及对策  

Influencing Factors and Countermeasures for Vanadium Yield during Ferrovanadium Smelting in Cylinder Furnace

作　　者：游本银 You Benyin(Panzhihua Vanadium Products Factory,Pangang Group Vanadium and Titanium Resources Co.,Ltd.,Panzhihua 617000,Sichuan,China)

机构地区：[1]攀钢集团钒钛资源股份公司攀枝花钒制品厂,四川攀枝花617000

出　　处：《钢铁钒钛》2020年第4期12-17,共6页Iron Steel Vanadium Titanium

摘　　要：介绍了直筒炉冶炼钒铁工艺特点,以及国内外相关企业钒收率现状,全面分析了直筒炉生产钒铁冶炼收率的影响因素,指出氧化钒堆密度和炉衬打结质量是影响钒收率的主要原因。从冶炼工艺和参数优化方向着手,针对性地指出提高直筒炉冶炼钒铁的途径和措施,对攀钢现有钒铁生产技术经济指标的提高具有一定指导意义。具体包括:控制V2O3堆密度在1.0以上,V2O3/V2O5值在2.0~2.5;确保炉衬打结质量,镁砂粒度3~8 mm比例≥60%,烘烤小火温度500℃、对应烘烤时间4 h、大火烘烤温度900℃、对应烘烤时间11 h;适当延长精炼时间,实施阶梯配铝等。优化后钒铁冶炼收率由95.5%提高到96.4%。According to the characteristics of ferrovanadium smelting in cylinder furnace and the current state of vanadium recovery for ferrovanadium smelting in the world,the factors influencing the vanadium recovery were systematically analyzed,and the bulk density of vanadium oxides as well as the ramming quality of furnace lining were proposed as the main factors influencing the vanadium recovery for ferrovanadium smelting.From the aspect of process and parameters optimization,the measures for improving vanadium recovery during ferrovanadium smelting were provided which have a guiding significance for technical-economic index improvement for industrial ferrovanadium smelting.And the measures include bulk density of V2O3 controlled above 1.0,the mass ratio of V2O3 to V2O5 kept at 2.0~2.5,more than 60% of magnesia for ramming having 3~8 mm of particle size.Moreover,the roasting process of the furnace is suggested at 500 ℃ for 4 h followed by 900 ℃ for 11 h.The measures also include prolonging the refining time and adopting gradient aluminum addition,etc.After optimization,vanadium recovery rate for ferrovanadium smelting in cylinder furnace increases from 95.5% to 96.4%.

关 键 词：钒铁 直筒炉 电铝热法 回收率 渣态 

分 类 号：TF841.3[冶金工程—有色金属冶金]