红格矿深还原—熔分过程及钒、铬走向的研究
|
摘要
深还原—熔分固相还原后的金属化球团生产钒铬生铁是利用红格矿的途径之一.由于V2O5与Cr2O3的赋存、分布以及冶炼过程中的走向基本一致,综合回收利用二者可一起考虑.为了提高钒、铬回收率,实现钛和铁的有效分离,通过单因素试验考察了在氩气保护下,配料的碱度、深还原—熔分温度和配碳量对熔分过程和钒、铬走向的影响.结果表明,当熔渣碱度为1.2,配碳量为0.5%,熔分时间为15 min,熔分温度为1 610℃时,渣铁的分离效果较好,且有利于钒、铬熔于铁相.
Deep reduction-smelting separation of the solid reduced metalized pellets to product vanadium,chromium iron is one of w ays to utilize the Hongge ore. O w ing to the coexistence,distribution and the going direction during smelting of V2O5and C r2O3are similar,comprehensive recovery and utilization of both elements can be considered together. In order to improve the recovery of vanadium and chromium,and to achieve an effective separation of titanium from iron,the single – factor tests w ere taken to investigate the effects of the alkalinity,temperature and carbon content in an atmosphere of Ar on the process of the deep reduction – smelting separation of Hongge ore and the going direction of V,C r. T he results show ed that w hen alkalinity is 1. 2,carbon content is 0. 5%,smelting separation time is 15min and smelting separation temperature is 1 610 ℃,the separation of slag and iron is better and it is beneficial for vanadium,chromium to dissolve into the iron phase.
Deep reduction-smelting separation of the solid reduced metalized pellets to product vanadium,chromium iron is one of w ays to utilize the Hongge ore. O w ing to the coexistence,distribution and the going direction during smelting of V2O5and C r2O3are similar,comprehensive recovery and utilization of both elements can be considered together. In order to improve the recovery of vanadium and chromium,and to achieve an effective separation of titanium from iron,the single – factor tests w ere taken to investigate the effects of the alkalinity,temperature and carbon content in an atmosphere of Ar on the process of the deep reduction – smelting separation of Hongge ore and the going direction of V,C r. T he results show ed that w hen alkalinity is 1. 2,carbon content is 0. 5%,smelting separation time is 15min and smelting separation temperature is 1 610 ℃,the separation of slag and iron is better and it is beneficial for vanadium,chromium to dissolve into the iron phase.
引文
[1]张建廷.红格铁矿铬的赋存、分布与回收利用[J].四川有色金属,2005,(1):1-4.(Zhang Jianting.Occurrence,distribution and recovery of C hromium in Hongge iron ore[J].Sichuan N onferrous M etals,2005,(1):1-4.)
[2]Filippou D,Hudon G.Iron removal and recovery in the titanium dioxide feedstock and pigment industries[J].Journal of the M inerals,2009,61(10):36-42.
[3]刘征建,杨广庆,薛庆国,等.钒钛磁铁矿含碳球团转底炉直接还原实验研究[J].过程工程学报,2009,9(1):51-55.(Liu Zhenjian,Yang Guangqing,Xue Qingguo,et al.R esearch on direct reduction of coal-containing pellets of vandic-titanomagnetite by rotary hearrh furnace[J].T he C hinese Journal of Process Engineering,2009,9(1):51-55.)
[4]El-Guindy M,Davenport W.Kinetics and mechanism of ilmenite reduction w ith graphite[J].M etallurgical and M aterials T ransaction B,1970,1(6):1729-1734.
[5]葛永肖.二元碱度对四元渣系(CaO-Al2O3-M gOSiO2)物理性能的影响[C]//河北省冶金学会、河北钢铁集团唐钢公司.河北省2011年炼钢连铸生产技术与学术交流会论文集.中国河北石家庄:中国会议,2011:67(Ge Yongxiao.Influence of basicity on physical properties of quarternary systerm of slag(Al2O3-C aO-M gO-SiO2)[C]//Hebei Institute of Metallurgy、Hebei Iron and Steel Group,T angshan company.Hebei proceedings of steelmaking continuous casting production technology and academic exchange in 2011.Hebei shijiazhuang,C hina:C hinese M eeting,2011:67-70.)
[6]郭世汉.活性石灰在冶金生产中的应用[J].耐火与石灰,2007,32(5):1-2.(Gue Shihan.Application of active lime in metallurgy[J].R efractories&Lime,2007,32(5):1-2.)
[7]周英明.40 t LF炉精炼渣系优化与研究[D].湖南:中南大学,2007.(Zhou Yingming.System optimization and research of 40 tons of LF furnace refining slag[D].Hunan:C entral South U niversity,2007.)
[8]王延忠,曾桂生,朱云,等.电炉熔炼钛精矿的热力学讨论[J].南方冶金,2004,138(3):10-13.(Wang Yanzhong,Zeng Guisheng,Zhu Yun,et al.A thermodynamic analysis of the reduction smelting of ilmenite[J].Southern Iron and Steel,2004,138(3):10-13.)
[9]烟征,张国华,张梅,等.攀枝花钒钛磁铁矿还原熔分规律初步研究[J].中国稀土学报,2010,360-364.(Yan Zheng,Zhang Guohua,Zhang Mei,et al.A preliminary study of the law of reduction-smelting separation of Panzhihua vanadium-titanium magnetite[J].Journal of the C hinese society of rare earths,2010,360-364.)
[2]Filippou D,Hudon G.Iron removal and recovery in the titanium dioxide feedstock and pigment industries[J].Journal of the M inerals,2009,61(10):36-42.
[3]刘征建,杨广庆,薛庆国,等.钒钛磁铁矿含碳球团转底炉直接还原实验研究[J].过程工程学报,2009,9(1):51-55.(Liu Zhenjian,Yang Guangqing,Xue Qingguo,et al.R esearch on direct reduction of coal-containing pellets of vandic-titanomagnetite by rotary hearrh furnace[J].T he C hinese Journal of Process Engineering,2009,9(1):51-55.)
[4]El-Guindy M,Davenport W.Kinetics and mechanism of ilmenite reduction w ith graphite[J].M etallurgical and M aterials T ransaction B,1970,1(6):1729-1734.
[5]葛永肖.二元碱度对四元渣系(CaO-Al2O3-M gOSiO2)物理性能的影响[C]//河北省冶金学会、河北钢铁集团唐钢公司.河北省2011年炼钢连铸生产技术与学术交流会论文集.中国河北石家庄:中国会议,2011:67(Ge Yongxiao.Influence of basicity on physical properties of quarternary systerm of slag(Al2O3-C aO-M gO-SiO2)[C]//Hebei Institute of Metallurgy、Hebei Iron and Steel Group,T angshan company.Hebei proceedings of steelmaking continuous casting production technology and academic exchange in 2011.Hebei shijiazhuang,C hina:C hinese M eeting,2011:67-70.)
[6]郭世汉.活性石灰在冶金生产中的应用[J].耐火与石灰,2007,32(5):1-2.(Gue Shihan.Application of active lime in metallurgy[J].R efractories&Lime,2007,32(5):1-2.)
[7]周英明.40 t LF炉精炼渣系优化与研究[D].湖南:中南大学,2007.(Zhou Yingming.System optimization and research of 40 tons of LF furnace refining slag[D].Hunan:C entral South U niversity,2007.)
[8]王延忠,曾桂生,朱云,等.电炉熔炼钛精矿的热力学讨论[J].南方冶金,2004,138(3):10-13.(Wang Yanzhong,Zeng Guisheng,Zhu Yun,et al.A thermodynamic analysis of the reduction smelting of ilmenite[J].Southern Iron and Steel,2004,138(3):10-13.)
[9]烟征,张国华,张梅,等.攀枝花钒钛磁铁矿还原熔分规律初步研究[J].中国稀土学报,2010,360-364.(Yan Zheng,Zhang Guohua,Zhang Mei,et al.A preliminary study of the law of reduction-smelting separation of Panzhihua vanadium-titanium magnetite[J].Journal of the C hinese society of rare earths,2010,360-364.)