钒钛铁精矿煤基直接还原试验研究  

Study on Direct Reduction of Vanadium and Titanium Iron Ore Concentrate

作　　者：李军 吴恩辉 侯静 黄平 Li Jun;Wu Enhui;Hou Jing;Huang Ping(Panzhihua University Panxi Science and Technology Innovation Center ,Panzhihua,Sichuan,China)

机构地区：[1]攀枝花学院攀西科技创新中心,四川攀枝花617000

出　　处：《矿产综合利用》2018年第6期53-56,31,共5页Multipurpose Utilization of Mineral Resources

基　　金：四川省科技支撑计划资助项目(2017JY0117),攀枝花市应用技术研究与开发资金资助项目(2017CY-G-15:2017-09-05).

摘　　要：对印尼钒钛铁精矿和攀枝花红格钒钛铁精矿进行了直接还原对比试验研究,对比试验结果表明:印尼钒钛铁精矿造球性能远远好于攀枝花红格的钒钛铁精矿,能够满足工业生产过程的运输要求。印尼钒钛铁精矿含碳球团在还原温度1350℃,还原15 min条件下金属化率可以达到90%左右,金属化球团残碳量为6%,可以满足后续熔分的要求。经过再磨再选后,TiO_2的含量可以达到12%左右,经过直接还原-熔分后富集的熔分钛渣TiO_2的品味理论上能达到48%左右,可以作为硫酸法钛白的原料。研究表明,印尼钒钛铁精矿非常适合采用直接还原-电炉熔分工艺进行处理,其Fe,V,Ti等有益元素能够得到很好的回收利用。相比于攀枝花红格钒钛铁精矿,印尼钒钛铁精矿由于选矿工艺简单,成本低廉,比攀枝花红格钒钛铁精矿更具市场竞争力。Comparative study on direct reduction of Indonesian sea water sandy vanadium titanium iron ore concentrate and Panzhihua Hongge vanadium and titanium iron ore concentrate was carried on. Test results show that the pellet performance of the Indonesian vanadium and titanium iron ore concentrate is much better than Panzhihua Hongge vanadium and titanium iron ore concentrate through direct reduction comparative study. Pellets of Indonesian vanadium titanium iron concentrate could meet the transport requirements of industrial production process. Metalification rate of indonesian vanadium and titanium iron ore concentrate could reach 90% and residual carbon content was 6% at a reduction temperature was 1350°C and a reduction time was 15 min, which could meet the requirements of furnace melting and separation. Theory content of molten titanium slag could reach about 48% after the direct reduction-melt fractions when the content of TiO2 reach about 12% after regrinding and selected, which could be used as raw materials of sulfuric acid titanium dioxide. The study shows that the indonesian vanadium-titanium iron concentrate was very suitable for the direct reduction-electric furnace melting process,and its beneficial elements such as Fe, V and Ti could be well recovered. Indonesia vanadium-titanium iron concentrate has more market competitiveness compared with panzhihua hongge vanadium-titanium iron concentrate because of its simple ore dressing process and low cost.

关 键 词：印尼钒钛铁精矿 直接还原 金属化率 残碳量 

分 类 号：TD951[矿业工程—选矿]