利用Factsage热力学软件对高磷铁水(w[P]=0.5%)的脱磷平衡过程进行模拟计算,并根据渣系相图对计算结果进行理论分析。结果表明,温度一定的条件下,渣中MgO饱和溶解度(w(MgO)SS)受到Fe t O质量百分比和碱度等因素的综合影响:当碱度R<1....利用Factsage热力学软件对高磷铁水(w[P]=0.5%)的脱磷平衡过程进行模拟计算,并根据渣系相图对计算结果进行理论分析。结果表明,温度一定的条件下,渣中MgO饱和溶解度(w(MgO)SS)受到Fe t O质量百分比和碱度等因素的综合影响:当碱度R<1.5时,w(MgO)SS随着Fe t O质量百分比的增加而减小;当1.5≤R<4.0时,w(MgO)SS先随着Fe t O质量百分比的增加先增大后减小,且当w(Fe t O)为40%左右时,w(MgO)SS达到最大值;当R≥4.0时,w(MgO)SS随着Fe t O质量百分比的增加而增加。另外,温度升高会促进渣对MgO的溶解,渣中w(MgO)SS有所增加。展开更多
FactSage has been used to predict the ash behavior and ash fusion temperature (AFT) at high temperature under reducing atmosphere conditions. For Huainan coal ash samples, it has demonstrated a good agreement between ...FactSage has been used to predict the ash behavior and ash fusion temperature (AFT) at high temperature under reducing atmosphere conditions. For Huainan coal ash samples, it has demonstrated a good agreement between the liquid phase formation as the function of temperature and the tested AFT. The tested and predicted flow temperature (FT) for two typical Huainan coal ashes with the addition of CaO flux are quite fit with the maximum temperature difference less than 74 ℃ which is within acceptable range. It can be concluded that FactSage in combination with X-ray diffraction (XRD) can be used to predict the reactions occurring between minerals, as well as the mineral transformation and slag formation. This is probably an improved way to interpret melting properties of mineral matter in coal and assist in quantifying slag formation in gasifier operation.展开更多
FactSage has been used to predict the ash behavior and ash fusion temperature AFT at high tempera- ture under reducing atmosphere conditions. For Huainan coal ash samples, it has demonstrated a good agreement between ...FactSage has been used to predict the ash behavior and ash fusion temperature AFT at high tempera- ture under reducing atmosphere conditions. For Huainan coal ash samples, it has demonstrated a good agreement between the liquid phase formation as the function of temperature and the tested AFT. The tested and predicted flow temperature FT for two typical Huainan coal ashes with the addition of CaO flux are quite fit with the maximum temperature difference less than 74℃ which is within acceptable range. It can be concluded that FactSage in com- bination with X-ray diffraction XRD can be used to predict the reactions occurring between minerals, as well as the mineral transformation and slag formation. This is probably an improved way to interpret melting properties of mineral matter in coal and assist in quantifying slag formation in gasifier operation.展开更多
Thermodynamic databases are very useful to analyze the complex chemical reactions happening in high temperature material processes. An accurate thermodynamic database based on physically sound thermodynamic models can...Thermodynamic databases are very useful to analyze the complex chemical reactions happening in high temperature material processes. An accurate thermodynamic database based on physically sound thermodynamic models can provide thermodynamic calculations of useful phase diagrams and comprehensive chemical reactions related to refractory corrosion in steelmaking processes. In this study,the FactS age thermodynamic database,one of the most comprehensive thermodynamic databases for oxide systems among other commercial software,is reviewed in particular for the steelmaking refractory research,and several applications to refractory corrosion are presented.展开更多
文摘利用Factsage热力学软件对高磷铁水(w[P]=0.5%)的脱磷平衡过程进行模拟计算,并根据渣系相图对计算结果进行理论分析。结果表明,温度一定的条件下,渣中MgO饱和溶解度(w(MgO)SS)受到Fe t O质量百分比和碱度等因素的综合影响:当碱度R<1.5时,w(MgO)SS随着Fe t O质量百分比的增加而减小;当1.5≤R<4.0时,w(MgO)SS先随着Fe t O质量百分比的增加先增大后减小,且当w(Fe t O)为40%左右时,w(MgO)SS达到最大值;当R≥4.0时,w(MgO)SS随着Fe t O质量百分比的增加而增加。另外,温度升高会促进渣对MgO的溶解,渣中w(MgO)SS有所增加。
基金Supported by the Natural Science Foundation of the Education Ministry of Anhui Province (2004kj 125) and the Key Project of Huainan (2003001).
文摘FactSage has been used to predict the ash behavior and ash fusion temperature (AFT) at high temperature under reducing atmosphere conditions. For Huainan coal ash samples, it has demonstrated a good agreement between the liquid phase formation as the function of temperature and the tested AFT. The tested and predicted flow temperature (FT) for two typical Huainan coal ashes with the addition of CaO flux are quite fit with the maximum temperature difference less than 74 ℃ which is within acceptable range. It can be concluded that FactSage in combination with X-ray diffraction (XRD) can be used to predict the reactions occurring between minerals, as well as the mineral transformation and slag formation. This is probably an improved way to interpret melting properties of mineral matter in coal and assist in quantifying slag formation in gasifier operation.
基金the Natural Science Foundation of the Education Ministry of Anhui Province (2004kj125)the Key Project ofHuainan (2003001)
文摘FactSage has been used to predict the ash behavior and ash fusion temperature AFT at high tempera- ture under reducing atmosphere conditions. For Huainan coal ash samples, it has demonstrated a good agreement between the liquid phase formation as the function of temperature and the tested AFT. The tested and predicted flow temperature FT for two typical Huainan coal ashes with the addition of CaO flux are quite fit with the maximum temperature difference less than 74℃ which is within acceptable range. It can be concluded that FactSage in com- bination with X-ray diffraction XRD can be used to predict the reactions occurring between minerals, as well as the mineral transformation and slag formation. This is probably an improved way to interpret melting properties of mineral matter in coal and assist in quantifying slag formation in gasifier operation.
基金Financial supports from Tata Steel Europe,Posco,RIST, Hyundai Steel,Nucor Steel,RTIT,Nippon Steel and Sumitomo Metals Corp. ,JFE Steel,Voestalpine,RHI,and the Natural Sciences and Engineering Research Council of Canada
文摘Thermodynamic databases are very useful to analyze the complex chemical reactions happening in high temperature material processes. An accurate thermodynamic database based on physically sound thermodynamic models can provide thermodynamic calculations of useful phase diagrams and comprehensive chemical reactions related to refractory corrosion in steelmaking processes. In this study,the FactS age thermodynamic database,one of the most comprehensive thermodynamic databases for oxide systems among other commercial software,is reviewed in particular for the steelmaking refractory research,and several applications to refractory corrosion are presented.
