提钒后钒钛磁铁精矿直接还原研究
|
摘要
首先运用Fact Sage软件从理论上分析了铁氧化物的还原反应在还原温度950~1 100℃下发生的可能性,然后将提钒后钒钛磁铁精矿与无烟煤按比例混匀、压样后进行直接还原实验,研究无烟煤添加量、原料粒度、还原温度、还原时间对还原产物金属化率的影响,并采用X射线衍射分析还原产物的物相变化.结果表明:在本论文还原温度下,还原反应在理论上是可以进行的.当无烟煤添加量(质量分数)为18%、原料粒度<75μm、还原温度为1 100℃、还原时间为90 min时,还原产物的金属化率可达99.18%,还原产物的物相主要为金属铁、黑钛石以及硅酸盐.
First,the possibility for reduction of iron oxide at temperature of 950 ～ 1 100 ℃ by using FactSage software was analysed. Vanadium-titanium magnetite concentrate extracted vanadium and anthracite were mixed in a proportion and pressed into samples. And then direct reduction of the samples was performed. Effects of content of anthracite,particle size of the raw materials,reduction temperature and reduction time on the metallization ratio of the reduction product were studied. Phases of the reduction product were characterized by X-ray diffraction. The results showed that reduction can carry out at the temperatures mentioned above. When content of the anthracite is 18%( mass fraction),particle size of the raw materials is less than 75 μm,temperature is 1 100 ℃,reduction time is 90 minutes,the metallization ratio of the reduced product can reach 99. 18%. Phases of the reduced product mainly contain iron,anosovite and silicate.
First,the possibility for reduction of iron oxide at temperature of 950 ～ 1 100 ℃ by using FactSage software was analysed. Vanadium-titanium magnetite concentrate extracted vanadium and anthracite were mixed in a proportion and pressed into samples. And then direct reduction of the samples was performed. Effects of content of anthracite,particle size of the raw materials,reduction temperature and reduction time on the metallization ratio of the reduction product were studied. Phases of the reduction product were characterized by X-ray diffraction. The results showed that reduction can carry out at the temperatures mentioned above. When content of the anthracite is 18%( mass fraction),particle size of the raw materials is less than 75 μm,temperature is 1 100 ℃,reduction time is 90 minutes,the metallization ratio of the reduced product can reach 99. 18%. Phases of the reduced product mainly contain iron,anosovite and silicate.
引文
[1]邓君,薛逊,刘功国.攀钢钒钛磁铁矿资源综合利用现状与发展[J].材料与冶金学报,2007,6(2):83-86.(Deng Jun,Xue Xun,Liu Gongguo.Current situation and development of comprehensive utilization of vanadiumbearing titanomagnetiteat Pangang[J].Journal of Materials and Metallurgy,2007,6(2):83-86.)
[2]苟淑云.对提高攀枝花钛资源利用率的思考[J].钢铁钒钛,2009,30(3):89.(Gou Shuyun.Discussing on increasing the utilization ratio of titanium in Panzhihua mineral resources[J].Iron Steel Vanadium T itanium,2009,30(3):89.)
[3]洪流,丁跃华,谢洪恩.钒钛磁铁矿转底炉直接还原综合利用前景[J].金属矿山,2007(5):10.(Hong Liu,Ding Yuehua,XieHongen.Prospect of comprehensive utilization of V-bearing titanomagnetite by rotary hearth furnace process[J].Metal Mine,2007(5):10.)
[4]薛逊.钒钛磁铁矿直接还原实验研究[J].钢铁钒钛,2007(03):37-41.(Xue Xun.Research on direct reduction of vanadic titanomagnetite[J].Iron Steel Vanadium T itanium,2007(03):37-41.)
[5]庞建明,郭培民,赵沛.钒钛磁铁矿的低温还原冶炼新技术[J].钢铁钒钛,2012,33(02):30-33.(Pang Jianming,Guo Peimin,Zhao Pei.A new lowtemperature reduction technology for vanadium-bearing titaniferous magnetite[J].Iron Steel Vanadium T itanium,2012,33(02):30-33.)
[6]洪陆阔,武兵强,李鸣铎,等.钒钛磁铁精矿含碳球团直接还原工艺分析[J].矿冶工程,2017,37(03):86-89.(Hong Lukuo,Wu Bingqiang,Li Mingduo,et al.Direct reduction process for carbon-containing pelletsof vanadium-bearing titanomagnetite[J].Mining and Metallurgical Engineering,2017,37(03):86-89.)
[7]陈德胜,宋波,王丽娜,等.钒钛磁铁精矿直接还原反应行为及其强化还原研究[J].北京科技大学学报,2011,33(11):1331-1336.(Chen Desheng,Song Bo,Wang Lina,et al.Direct reduction and enhanced reduction of vanadium-bearing titanomagnetite concentrate[J].Journal of University of Science and T echnology Beijing,2011,33(11):1331-1336.)106
[8]王红兵,贾彦忠,梁德兰,等.钒钛磁铁矿含碳球团直接还原试验研究[J].钢铁研究,2017,45(01):23-25.(Wang Hongbing,Jia Yanzhong,Liang Delan,et al.Experimental research on direct reduction for carboncontaining pellets of vanadium-titanium magnetite[J].Research on Iron and Steel,2017,45(01):23-25.)
[9]都兴红,解斌,娄太平.钒钛磁铁矿固态还原的研究[J].东北大学学报(自然科学版),2012,33(05):685-688.(Du Xinghong,Xie Bin,Lou T aiping.Research on solid reduction of vanadium-titanium magnetite[J].Journal of Northeastern University(Natural Science),2012,33(05):685-688.)
[10]吕亚男,郭宇峰,温贻芳,等.钒钛磁铁精矿固态还原的强化研究[J].中北大学学报(自然科学版),2016,37(05):546-551.(Lv Yanan,Gu Yufeng,Wen Yifang,et al.Study of solid state reduction strengthening of vanadium-titanium magnetite concentrate[J].Journal of North University of China(Natural Science),2016,37(05):546-551.)
[11]郭宇峰,吕亚男,姜涛,等.预氧化在攀枝花钛铁矿固态还原过程中的作用[J].北京科技大学学报,2010,32(04):413-419.(Gu Yufeng,Lv Yanan,Jiang T ao,et al.Effect of preoxidation on Panzhihua ilmenite in solid state reduction process[J].Journal of University of Science and T echnology Beijing,2010,32(04):413-419.)
[12]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,2009,2(3):58-60.(Liu Zhengjian,Yang Guangqing,Xue Qingguo,et al.Research on direct reduction of coal-containing pellets of vanadium-titanium magnetite by rotary hearth furnace[J].Chinese Journal of Process Engineering,2009,2(3):58-60.)
[13]黄柱成,蔡凌波,张元波,等.Na2CO3和CaF2强化赤泥铁氧化物还原研究[J].中南大学学报(自然科学版),2010,41(03):838-844.(Huang Zhucheng,Cai Lingbo,Zhang Yuanbo,et al.Reduction of iron oxides of red mud reinforced by Na2CO3and CaF2[J].Journal of Central South University(Natural Science Edition),2010,41(03):838-844.)
[14]Zhou Lanhua,Zeng Fuhong.Statistical analysis of the effect of Na2CO3 as additive on the reduction of vanadictitanomagnetite-coal mixed pellets[J].Advanced Materials Research,2010,97-101:465-470.
[15]朱德庆,郭宇峰,邱冠周,等.钒钛磁铁精矿冷固球团催化还原机理[J].中南工业大学学报(自然科学版),2000,31(03):208-211.(Zhu Deqing,Guo Yufeng,Qiu Guanzhou,et al.Catalyzing the direct reduction of cold-bound pellets from vanadium-titanium magnetite concentrate[J].Journal of Central South University(Natural Science),2000,31(03):208-211.)
[16]史占彪.非高炉炼铁学[M].沈阳:东北工学院出版社,1991:147.(Shi Zhanbiao.Non-blast furnace ironmaking[M].Shenyang:Northeast Institute of T echnology Press,1991:147.)
[2]苟淑云.对提高攀枝花钛资源利用率的思考[J].钢铁钒钛,2009,30(3):89.(Gou Shuyun.Discussing on increasing the utilization ratio of titanium in Panzhihua mineral resources[J].Iron Steel Vanadium T itanium,2009,30(3):89.)
[3]洪流,丁跃华,谢洪恩.钒钛磁铁矿转底炉直接还原综合利用前景[J].金属矿山,2007(5):10.(Hong Liu,Ding Yuehua,XieHongen.Prospect of comprehensive utilization of V-bearing titanomagnetite by rotary hearth furnace process[J].Metal Mine,2007(5):10.)
[4]薛逊.钒钛磁铁矿直接还原实验研究[J].钢铁钒钛,2007(03):37-41.(Xue Xun.Research on direct reduction of vanadic titanomagnetite[J].Iron Steel Vanadium T itanium,2007(03):37-41.)
[5]庞建明,郭培民,赵沛.钒钛磁铁矿的低温还原冶炼新技术[J].钢铁钒钛,2012,33(02):30-33.(Pang Jianming,Guo Peimin,Zhao Pei.A new lowtemperature reduction technology for vanadium-bearing titaniferous magnetite[J].Iron Steel Vanadium T itanium,2012,33(02):30-33.)
[6]洪陆阔,武兵强,李鸣铎,等.钒钛磁铁精矿含碳球团直接还原工艺分析[J].矿冶工程,2017,37(03):86-89.(Hong Lukuo,Wu Bingqiang,Li Mingduo,et al.Direct reduction process for carbon-containing pelletsof vanadium-bearing titanomagnetite[J].Mining and Metallurgical Engineering,2017,37(03):86-89.)
[7]陈德胜,宋波,王丽娜,等.钒钛磁铁精矿直接还原反应行为及其强化还原研究[J].北京科技大学学报,2011,33(11):1331-1336.(Chen Desheng,Song Bo,Wang Lina,et al.Direct reduction and enhanced reduction of vanadium-bearing titanomagnetite concentrate[J].Journal of University of Science and T echnology Beijing,2011,33(11):1331-1336.)106
[8]王红兵,贾彦忠,梁德兰,等.钒钛磁铁矿含碳球团直接还原试验研究[J].钢铁研究,2017,45(01):23-25.(Wang Hongbing,Jia Yanzhong,Liang Delan,et al.Experimental research on direct reduction for carboncontaining pellets of vanadium-titanium magnetite[J].Research on Iron and Steel,2017,45(01):23-25.)
[9]都兴红,解斌,娄太平.钒钛磁铁矿固态还原的研究[J].东北大学学报(自然科学版),2012,33(05):685-688.(Du Xinghong,Xie Bin,Lou T aiping.Research on solid reduction of vanadium-titanium magnetite[J].Journal of Northeastern University(Natural Science),2012,33(05):685-688.)
[10]吕亚男,郭宇峰,温贻芳,等.钒钛磁铁精矿固态还原的强化研究[J].中北大学学报(自然科学版),2016,37(05):546-551.(Lv Yanan,Gu Yufeng,Wen Yifang,et al.Study of solid state reduction strengthening of vanadium-titanium magnetite concentrate[J].Journal of North University of China(Natural Science),2016,37(05):546-551.)
[11]郭宇峰,吕亚男,姜涛,等.预氧化在攀枝花钛铁矿固态还原过程中的作用[J].北京科技大学学报,2010,32(04):413-419.(Gu Yufeng,Lv Yanan,Jiang T ao,et al.Effect of preoxidation on Panzhihua ilmenite in solid state reduction process[J].Journal of University of Science and T echnology Beijing,2010,32(04):413-419.)
[12]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,2009,2(3):58-60.(Liu Zhengjian,Yang Guangqing,Xue Qingguo,et al.Research on direct reduction of coal-containing pellets of vanadium-titanium magnetite by rotary hearth furnace[J].Chinese Journal of Process Engineering,2009,2(3):58-60.)
[13]黄柱成,蔡凌波,张元波,等.Na2CO3和CaF2强化赤泥铁氧化物还原研究[J].中南大学学报(自然科学版),2010,41(03):838-844.(Huang Zhucheng,Cai Lingbo,Zhang Yuanbo,et al.Reduction of iron oxides of red mud reinforced by Na2CO3and CaF2[J].Journal of Central South University(Natural Science Edition),2010,41(03):838-844.)
[14]Zhou Lanhua,Zeng Fuhong.Statistical analysis of the effect of Na2CO3 as additive on the reduction of vanadictitanomagnetite-coal mixed pellets[J].Advanced Materials Research,2010,97-101:465-470.
[15]朱德庆,郭宇峰,邱冠周,等.钒钛磁铁精矿冷固球团催化还原机理[J].中南工业大学学报(自然科学版),2000,31(03):208-211.(Zhu Deqing,Guo Yufeng,Qiu Guanzhou,et al.Catalyzing the direct reduction of cold-bound pellets from vanadium-titanium magnetite concentrate[J].Journal of Central South University(Natural Science),2000,31(03):208-211.)
[16]史占彪.非高炉炼铁学[M].沈阳:东北工学院出版社,1991:147.(Shi Zhanbiao.Non-blast furnace ironmaking[M].Shenyang:Northeast Institute of T echnology Press,1991:147.)