B_2O_3对含钛高炉渣中钙钛矿相及渣铁分离的影响
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摘要
针对钒钛磁铁矿高炉冶炼过程出现的炉渣黏稠、渣铁难分等问题,通过配加不同比例的B_2O_3改性剂对炉渣成分进行调整,研究了改性剂对含钛高炉渣中钙钛矿晶粒的析出行为、微观形貌等的影响,并探讨了改性剂B_2O_3的改性机理。结果表明,添加一定量的B_2O_3能够对钙钛矿晶粒的析出产生比较明显的抑制作用,其效果随B_2O_3添加量的增加而增加。结合SEM-EDS对产物进行分析,发现随着B_2O_3改性剂用量的增加,金属铁更加容易聚集长大。B_2O_3作为一种低熔点助熔剂进入高钛型高炉渣中,能够有效地降低冶金渣的黏度和液相线温度,改变渣的物相组成,实现富钛相较好的富集,此方面的机理研究能够对将来高钛型高炉渣的资源化利用提供一定的理论基础。
In order to study the slag composition of vanadium-titanium magnetite in the blast furnace smelting process and slag-iron slag,the slag composition was adjusted by adding different proportions of B_2O_3 modifiers. The effects of modifier on the microstructure and the precipitation behavior of the titanium ore grains were investigated,and the modification mechanism of the additive B_2O_3 was discussed preliminarily. The results show that the addition of a certain amount of B_2O_3 can inhibit the precipitation of perovskite grains obviously,and the effect increases with the B_2O_3 content increasing. The product is analyzed by SEM-EDS,and it is found that the metal iron grows more easily with the increase of the amount of B_2O_3 modifier. As a low melting flux into the high titanium blast furnace slag,B_2O_3 can effectively reduce the viscosity of metallurgical slag and liquidus temperature,and change the phase composition of slag to achieve a better enrichment of titanium-rich. Thus,the mechanism inveatigation can provide a theoretical basis for the future utilization of high titanium blast furnace slag.
In order to study the slag composition of vanadium-titanium magnetite in the blast furnace smelting process and slag-iron slag,the slag composition was adjusted by adding different proportions of B_2O_3 modifiers. The effects of modifier on the microstructure and the precipitation behavior of the titanium ore grains were investigated,and the modification mechanism of the additive B_2O_3 was discussed preliminarily. The results show that the addition of a certain amount of B_2O_3 can inhibit the precipitation of perovskite grains obviously,and the effect increases with the B_2O_3 content increasing. The product is analyzed by SEM-EDS,and it is found that the metal iron grows more easily with the increase of the amount of B_2O_3 modifier. As a low melting flux into the high titanium blast furnace slag,B_2O_3 can effectively reduce the viscosity of metallurgical slag and liquidus temperature,and change the phase composition of slag to achieve a better enrichment of titanium-rich. Thus,the mechanism inveatigation can provide a theoretical basis for the future utilization of high titanium blast furnace slag.
引文
[1]李乃尧,张建良,刘兴乐,等.Mg O、Ti O2对镁质钒钛球团矿综合冶金性能的影响[J].钢铁,2017,52(7):14.(LI Nai-yao,ZHANG Jian-liang,LIU Xing-le,et al.Effects of Mg O and Ti O2on comprehensive metallurgical properties of magnesia vanadium titanium pellets[J].Iron and Steel,2017,52(7):14.)
[2]李静.攀枝花含钛高炉渣中钛元素富集与分离基础研究[D].北京:北京大学,2012.(LI Jing.Fundamental Study on the Enrichment of Ti-Enriched Phases and Their Crystallization Behavior in Panzhihua Ti-Enriched Blast Furnace Slag[D].Beijing:Beijing University,2012.)
[3]白晨光,裴鹤年,周培土.含钛高炉渣中性条件下的物性研究[J].四川冶金,1992(4):6.(BAI Chen-guang,PEI He-nian,ZHOU Pei-tu.Physical properties of titanium-bearing blast furnace slag under neutral conditions[J].Sichuan Metallurgy,1992(4):6.)
[4]蔡爽,张玉柱,李俊国,等.调质高炉渣均质化的可行性研究[J].钢铁,2016,51(6):34.(CAI Shuang,ZHANG Yu-zhu,LI Jun-guo,et al.Preliminary research on homogenization of adjusted molten BF slag[J].Iron and Steel,2016,51(6):34.)
[5]陈德玉,谭克锋.攀钢高钛型高炉渣生产墙体材料可行性研究[J].混凝土与水泥制品,2012(9):57.(CHEN De-yu,TAN Kefeng.Study on feasibility of production of wall materials for high titanium blast furnace slag in Panzhihua Iron and Steel[J].Journal of Concrete and Cement Products,2012(9):57.)
[6]徐楚韶,陈光碧.用含钛高炉渣生产矿渣硅酸盐水泥的研究[J].矿冶工程,1985,5(3):53.(XU Chu-shao,CHENG Guangbi.A study on portland blast furnace cement containing titanic[J].Mining and Metallurgical Engi-neering,1985,5(3):53.)
[7]李慧,仇永全,杨则器.等离子炉碳(氮)化处理高钛高炉渣[J].北京科技大学学报,1996,32(3):231.(LI Hui,QIU Yongquan,YANG Ze-qi.Carbonization(Nitrogention)for titaniumbearing blast furnace slag by plasma furnace[J].Journal of University of Science and Technology Beijing,1996,32(3):231.)
[8]黄守华,潘竟业,张荣禄.攀钢高炉渣熔融还原碳化Ti O2半工业试验研究[J].钢铁钒钛,1994,15(2):17.(HUANG Shouhua,PAN Jing-ye,ZHANG Rong-lu.Pilot test of carbonization of the molten blast furnace Ti O2slag at Panzhihua Iron and Steel Company[J].Iron Steel Vanadium Titanium,1994,15(2):17.)
[9]谢洪恩,秦兴国,郑魁,等.高钛型高炉渣熔化性温度影响因素[J].中国冶金,2017,27(9):13.(XIE Hong-en,QIN Xingguo,ZHENG Kui,et al.Analysis of effect factors of smelting temperature of high-titanium-type blast furnace slag[J].China Metallurgy,2017,27(9):13.)
[10]熊瑶,梁斌,李春.自然冷却含钛高炉渣中钛的提取与分离[J].过程工程学报,2008,8(6):1092.(XIONG Yao,LIANG Bin,LI Chun.Extraction and separation of titanium from air-cooled Ti-bearing blast furnace slag[J].The Chinese Journal of Process Engineering,2008,8(6):1092.)
[11]刘晓华,隋智通.含Ti高炉渣的加压酸解[J].中国有色金属学报,2002,12(6):1281.(LIU Xiao-hua,SUI Zhi-tong.Leaching of Ti-bearing blast furnace slag by pressuring[J].The Chinese Journal of Nonferrous Metals,2002,12(6):1281.)
[12]严芳,李春,梁斌.水淬含钛高炉渣二段酸解工艺[J].过程工程学报,2006,6(3):413.(YAN Fang,LI Chun,LIANG Bin.A two-step sulfuric;acid leaching process of Ti-bearing blast furnace slag[J].The Chinese Journal of Process Engineering,2006,6(3):413.)
[13]周志明,张丙怀,朱子宗.高钛型高炉渣的渣钛分离试验[J].钢铁钒钛,1999(4):37.(ZHOU Zhi-ming,ZHANG Bing-huai,ZHU Zi-zong.A test of titanic separation from high titanic bearing blast furnace slag[J].Iron Steel Vanadium Titanium,1999(4):37.)
[14]郭培民,赵沛.从相图分析含钛高炉渣选择性分离富集技术[J].钢铁钒钛,2005,26(2):5.(GUO Pei-min,ZHAO Pei.Technical analysis on selective separation and enrichment of Tibearing blast furnace slag based on phase diagrams[J].Iron Steel Vanadium Titanium,2005,26(2):5.)
[15]李玉海,娄太平,隋智通.含钛高炉渣中Ca O和Mn O对钙钛矿结晶的影响[J].钢铁研究学报,2000,12(3):1.(LI Yu-hai,LOU Tai-ping,SUI Zhi-tong.Effects of Ca O and Mn O on the crystallization of perovskite in Ti-bearing blast furnace slag[J].Journal of Iron and Steel Research,2000,12(3):1.)
[16]李玉海,娄太平,隋智通.含钛高炉渣中钛组分选择性富集及钙钛矿结晶行为[J].中国有色金属学报,2000,10(5):719.(LI Yu-hai,LOU Tai-ping,SUI Zhi-tong.Selective enrichment of titanium components in titanium-bearing blast furnace slag and crystallization behavior of perovskite[J].Journal of Nonferrous Metals,2000,10(5):719.)
[17]傅念新,张勇维,隋智通.化学成分对高钛高炉渣钙钛矿相析出行为的影响[J].矿冶工程,1997,17(4):38.(FU Nian-xin,ZHANG Yong-wei,SUI Zhi-tong.Effects of chemical composition on precipitation behavior of perovskite deposits in high titanium blast furnace slag[J].Metallurgical Engineering,1997,17(4):38.)
[18]侯世喜,柯昌明,李有奇,等.金属热还原含钛高炉渣制取合金及残渣的研究[J].铁合金,2007,38(5):20.(HOU Shi-xi,KE Chang-ming,LI You-qi,et al.Metal thermal reduction of titanium-bearing blast furnace slag from the alloy and residue[J].Ferroalloy,2007,38(5):20.)
[19]习小军,赖朝彬,干磊,等.含Ce2O3锰铁脱磷渣系熔化性质及黏度[J].钢铁,2016,51(11):26.(XI Xiao-jun,LAI Chao-bin,GAN Lei,et al.Melting properties and viscosity of ferromanganese dephosphorization slag containing Ce2O3[J].Iron and Steel,2016,51(11):26.)
[2]李静.攀枝花含钛高炉渣中钛元素富集与分离基础研究[D].北京:北京大学,2012.(LI Jing.Fundamental Study on the Enrichment of Ti-Enriched Phases and Their Crystallization Behavior in Panzhihua Ti-Enriched Blast Furnace Slag[D].Beijing:Beijing University,2012.)
[3]白晨光,裴鹤年,周培土.含钛高炉渣中性条件下的物性研究[J].四川冶金,1992(4):6.(BAI Chen-guang,PEI He-nian,ZHOU Pei-tu.Physical properties of titanium-bearing blast furnace slag under neutral conditions[J].Sichuan Metallurgy,1992(4):6.)
[4]蔡爽,张玉柱,李俊国,等.调质高炉渣均质化的可行性研究[J].钢铁,2016,51(6):34.(CAI Shuang,ZHANG Yu-zhu,LI Jun-guo,et al.Preliminary research on homogenization of adjusted molten BF slag[J].Iron and Steel,2016,51(6):34.)
[5]陈德玉,谭克锋.攀钢高钛型高炉渣生产墙体材料可行性研究[J].混凝土与水泥制品,2012(9):57.(CHEN De-yu,TAN Kefeng.Study on feasibility of production of wall materials for high titanium blast furnace slag in Panzhihua Iron and Steel[J].Journal of Concrete and Cement Products,2012(9):57.)
[6]徐楚韶,陈光碧.用含钛高炉渣生产矿渣硅酸盐水泥的研究[J].矿冶工程,1985,5(3):53.(XU Chu-shao,CHENG Guangbi.A study on portland blast furnace cement containing titanic[J].Mining and Metallurgical Engi-neering,1985,5(3):53.)
[7]李慧,仇永全,杨则器.等离子炉碳(氮)化处理高钛高炉渣[J].北京科技大学学报,1996,32(3):231.(LI Hui,QIU Yongquan,YANG Ze-qi.Carbonization(Nitrogention)for titaniumbearing blast furnace slag by plasma furnace[J].Journal of University of Science and Technology Beijing,1996,32(3):231.)
[8]黄守华,潘竟业,张荣禄.攀钢高炉渣熔融还原碳化Ti O2半工业试验研究[J].钢铁钒钛,1994,15(2):17.(HUANG Shouhua,PAN Jing-ye,ZHANG Rong-lu.Pilot test of carbonization of the molten blast furnace Ti O2slag at Panzhihua Iron and Steel Company[J].Iron Steel Vanadium Titanium,1994,15(2):17.)
[9]谢洪恩,秦兴国,郑魁,等.高钛型高炉渣熔化性温度影响因素[J].中国冶金,2017,27(9):13.(XIE Hong-en,QIN Xingguo,ZHENG Kui,et al.Analysis of effect factors of smelting temperature of high-titanium-type blast furnace slag[J].China Metallurgy,2017,27(9):13.)
[10]熊瑶,梁斌,李春.自然冷却含钛高炉渣中钛的提取与分离[J].过程工程学报,2008,8(6):1092.(XIONG Yao,LIANG Bin,LI Chun.Extraction and separation of titanium from air-cooled Ti-bearing blast furnace slag[J].The Chinese Journal of Process Engineering,2008,8(6):1092.)
[11]刘晓华,隋智通.含Ti高炉渣的加压酸解[J].中国有色金属学报,2002,12(6):1281.(LIU Xiao-hua,SUI Zhi-tong.Leaching of Ti-bearing blast furnace slag by pressuring[J].The Chinese Journal of Nonferrous Metals,2002,12(6):1281.)
[12]严芳,李春,梁斌.水淬含钛高炉渣二段酸解工艺[J].过程工程学报,2006,6(3):413.(YAN Fang,LI Chun,LIANG Bin.A two-step sulfuric;acid leaching process of Ti-bearing blast furnace slag[J].The Chinese Journal of Process Engineering,2006,6(3):413.)
[13]周志明,张丙怀,朱子宗.高钛型高炉渣的渣钛分离试验[J].钢铁钒钛,1999(4):37.(ZHOU Zhi-ming,ZHANG Bing-huai,ZHU Zi-zong.A test of titanic separation from high titanic bearing blast furnace slag[J].Iron Steel Vanadium Titanium,1999(4):37.)
[14]郭培民,赵沛.从相图分析含钛高炉渣选择性分离富集技术[J].钢铁钒钛,2005,26(2):5.(GUO Pei-min,ZHAO Pei.Technical analysis on selective separation and enrichment of Tibearing blast furnace slag based on phase diagrams[J].Iron Steel Vanadium Titanium,2005,26(2):5.)
[15]李玉海,娄太平,隋智通.含钛高炉渣中Ca O和Mn O对钙钛矿结晶的影响[J].钢铁研究学报,2000,12(3):1.(LI Yu-hai,LOU Tai-ping,SUI Zhi-tong.Effects of Ca O and Mn O on the crystallization of perovskite in Ti-bearing blast furnace slag[J].Journal of Iron and Steel Research,2000,12(3):1.)
[16]李玉海,娄太平,隋智通.含钛高炉渣中钛组分选择性富集及钙钛矿结晶行为[J].中国有色金属学报,2000,10(5):719.(LI Yu-hai,LOU Tai-ping,SUI Zhi-tong.Selective enrichment of titanium components in titanium-bearing blast furnace slag and crystallization behavior of perovskite[J].Journal of Nonferrous Metals,2000,10(5):719.)
[17]傅念新,张勇维,隋智通.化学成分对高钛高炉渣钙钛矿相析出行为的影响[J].矿冶工程,1997,17(4):38.(FU Nian-xin,ZHANG Yong-wei,SUI Zhi-tong.Effects of chemical composition on precipitation behavior of perovskite deposits in high titanium blast furnace slag[J].Metallurgical Engineering,1997,17(4):38.)
[18]侯世喜,柯昌明,李有奇,等.金属热还原含钛高炉渣制取合金及残渣的研究[J].铁合金,2007,38(5):20.(HOU Shi-xi,KE Chang-ming,LI You-qi,et al.Metal thermal reduction of titanium-bearing blast furnace slag from the alloy and residue[J].Ferroalloy,2007,38(5):20.)
[19]习小军,赖朝彬,干磊,等.含Ce2O3锰铁脱磷渣系熔化性质及黏度[J].钢铁,2016,51(11):26.(XI Xiao-jun,LAI Chao-bin,GAN Lei,et al.Melting properties and viscosity of ferromanganese dephosphorization slag containing Ce2O3[J].Iron and Steel,2016,51(11):26.)