甲醇/乙醇-氢气还原铁矿石制备Fe_3C研究
|
摘要
鉴于工业上成功采用CH_4-H_2系和CO-H_2系气体作为还原剂制备Fe_3C,尝试以甲醇作为碳源,同氢气共同还原铁矿石制备Fe_3C.试验考察温度、氢还原时间、甲醇量对碳化铁率的影响.采用扫描电镜分析、XRD测试等手段研究产物的物相组成.结果表明:在反应温度700℃,无水甲醇量高于60 m L,氢还原时间120 min的试验条件下,达到高效生产Fe_3C的目的.该工艺方法流程简单,操作条件温和,具有广阔的应用前景.在此基础上,用乙醇代替甲醇,研究其还原效果.
Considering the industrial production of Fe_3C by applying CH_4-H_2 and CO-H_2 gas as reducing agents,Fe_ C was attempted to produce by adopting hydrogen and methanol gas, the latter produced by the vaporization of anhydrous methanol.The effects of temperature, hydrogen reaction time and methanol content on iron carbide rate are investigated.Phase composition of the products is studied by SEM and XRD.The results indicate that the experiment attains the goal of high efficient production when the temperature is 700 ℃, the volume of anhydrous methanol is more than 60 m L, hydrogen reduction time is 120 min.The method has a good application prospect due to its simple process, mild operation condition.On this basis, the reduction performance was studied by replacing ethanol with methanol.
Considering the industrial production of Fe_3C by applying CH_4-H_2 and CO-H_2 gas as reducing agents,Fe_ C was attempted to produce by adopting hydrogen and methanol gas, the latter produced by the vaporization of anhydrous methanol.The effects of temperature, hydrogen reaction time and methanol content on iron carbide rate are investigated.Phase composition of the products is studied by SEM and XRD.The results indicate that the experiment attains the goal of high efficient production when the temperature is 700 ℃, the volume of anhydrous methanol is more than 60 m L, hydrogen reduction time is 120 min.The method has a good application prospect due to its simple process, mild operation condition.On this basis, the reduction performance was studied by replacing ethanol with methanol.
引文
[1]李光强,杨剑,王恒辉,等.矿粉粒度及反应温度对高磷鲕状赤铁矿制备碳化铁的影响[J].重庆大学学报,2015,38(6):1-10.
[2]刘润藻.大型超高功率电弧炉炼钢综合节能技术研究[D].沈阳:东北大学,2006.
[3]张玲娜,陶金慧,纪开吉,等.碳/碳化铁复合介孔材料的合成及储氢性能[J].高等学校化学学报,2014(6):1318-1322.
[4]王德永,闵义,刘承军,等.利用CO-CO2-H2混合气体生产碳化铁的实验研究[J].过程工程学报,2007,7(2):332-336.
[5]李金波,吕庆.转炉煤气制备碳化铁的基础研究[J].河北理工大学学报(自然科学版),2008(1):26-29.
[6]何强,李光强,吴仕慈,等.V2O3、Al2O3添加剂对碳化铁生成的影响[J].钢铁钒钛,2008(2):27-31.
[7]王晓明.氧化物添加剂促进碳化铁生成的作用机理研究[D].武汉:武汉科技大学,2010.
[8]易凌云.铁矿球团CO-H2混合气体气基直接还原基础研究[D].长沙:中南大学,2013.
[9]马江华.碳化铁制备过程中原料微观结构和氧化物添加剂的影响[D].武汉:武汉科技大学,2006.
[10]倪红卫,章奉山,苍大强,等.二步法制备碳化铁的基础研究[J].钢铁研究学报,2001(4):1-5.
[11]LI G Q,MA J H,NI H W,et al.Influences of oxide additions on formation reaction of iron carbide at 1023 K[J].ISIJ International,2006,46(7):981-986.
[12]温力士.强化巴西赤铁矿链篦机—回转窑球团焙烧技术及其在中国的工业应用[D].长沙:中南大学,2012.
[13]李献辉.基于混合模型的球团矿化学成分预报的研究[D].沈阳:东北大学,2009.
[14]ALBERTO N,MARTINS P.Conversion of hematite to iron carbides by gas phase carburization[J].ISIJ International,2004,44(6):992-998.
[15]KIM J H,KIM J,PARK J,et al.Synthesis is of carbon-encapsulated iron carbide nanoparticles on a polyimide thin film[J].Nanotechnology,2007,18(11):115609.
[16]BAHGAT M.Technology of iron carbide synthesis[J].Journal of Materials Science&Technology,2006,22(3):423-432.
[17]王德永,惠银安,闵义,等.利用催化剂促进碳化铁生成速度的基础性研究[J].东北大学学报,2001,22(1):87-90.
[18]ZHANG J Q,OSTROVSK O.Cementite formation in CH4-H2-Ar gas mixture and cementite stability[J].ISIJ International,2001,41(4):33-339.
[19]YANG K Y,XU W,ZHANG Y,et al.Synthesis and characteristics of Fe3C nanoparticles embeded in amorphous carbon matrix[J].Chemical Research in Chinese Universities,2010,26(3):348.
[20]王德永,刘承军,姜茂发.炼钢新原料-碳化铁的表征与制备技术[M].北京:科学出版社,2012.
[2]刘润藻.大型超高功率电弧炉炼钢综合节能技术研究[D].沈阳:东北大学,2006.
[3]张玲娜,陶金慧,纪开吉,等.碳/碳化铁复合介孔材料的合成及储氢性能[J].高等学校化学学报,2014(6):1318-1322.
[4]王德永,闵义,刘承军,等.利用CO-CO2-H2混合气体生产碳化铁的实验研究[J].过程工程学报,2007,7(2):332-336.
[5]李金波,吕庆.转炉煤气制备碳化铁的基础研究[J].河北理工大学学报(自然科学版),2008(1):26-29.
[6]何强,李光强,吴仕慈,等.V2O3、Al2O3添加剂对碳化铁生成的影响[J].钢铁钒钛,2008(2):27-31.
[7]王晓明.氧化物添加剂促进碳化铁生成的作用机理研究[D].武汉:武汉科技大学,2010.
[8]易凌云.铁矿球团CO-H2混合气体气基直接还原基础研究[D].长沙:中南大学,2013.
[9]马江华.碳化铁制备过程中原料微观结构和氧化物添加剂的影响[D].武汉:武汉科技大学,2006.
[10]倪红卫,章奉山,苍大强,等.二步法制备碳化铁的基础研究[J].钢铁研究学报,2001(4):1-5.
[11]LI G Q,MA J H,NI H W,et al.Influences of oxide additions on formation reaction of iron carbide at 1023 K[J].ISIJ International,2006,46(7):981-986.
[12]温力士.强化巴西赤铁矿链篦机—回转窑球团焙烧技术及其在中国的工业应用[D].长沙:中南大学,2012.
[13]李献辉.基于混合模型的球团矿化学成分预报的研究[D].沈阳:东北大学,2009.
[14]ALBERTO N,MARTINS P.Conversion of hematite to iron carbides by gas phase carburization[J].ISIJ International,2004,44(6):992-998.
[15]KIM J H,KIM J,PARK J,et al.Synthesis is of carbon-encapsulated iron carbide nanoparticles on a polyimide thin film[J].Nanotechnology,2007,18(11):115609.
[16]BAHGAT M.Technology of iron carbide synthesis[J].Journal of Materials Science&Technology,2006,22(3):423-432.
[17]王德永,惠银安,闵义,等.利用催化剂促进碳化铁生成速度的基础性研究[J].东北大学学报,2001,22(1):87-90.
[18]ZHANG J Q,OSTROVSK O.Cementite formation in CH4-H2-Ar gas mixture and cementite stability[J].ISIJ International,2001,41(4):33-339.
[19]YANG K Y,XU W,ZHANG Y,et al.Synthesis and characteristics of Fe3C nanoparticles embeded in amorphous carbon matrix[J].Chemical Research in Chinese Universities,2010,26(3):348.
[20]王德永,刘承军,姜茂发.炼钢新原料-碳化铁的表征与制备技术[M].北京:科学出版社,2012.