摘要
根据相图确定了CaO-FeO-Fe_2O_3-SiO_2四元和CaO-MgO-FeO-Fe_2O_3-SiO_2五元渣系的结构单元。以此为基础,按照炉渣结构的共存理论制定了两种渣系氧化能力N_(Fe_tO)的计算模型。表达式为:N_(Fe_tO)=N_(FeO)+6N_(Fe_2O_3)+8N_(Fe_3O_4)。计算和实测的氧化能力(N_(Fe_tO)和a_(Fe_tO)符合甚好,从而证明共存理论适用于以上四、五元渣系。同时还求出了1258～1370℃间钙铁橄榄石CaFeSiO_4的标准生成自由能ΔG_(CaFeSiO_4)。
According to the corresponding phase diagrams, the structural units of CaO-FeO-Fe2O3-SiO2 and CaO-MgO-FeO-Fe2O3-SiO2 slag systems have been determined. Based on these structural units and the coexistence theory of slag structure, calculating models of mass action concentrations for the corresponding slag systems have been deduced. The oxidizing capability of these melts can be expressed asGood agreement between calculated NFetO and measured aFetO shows that the coexistence theory of slag structure is applicable to the above mentioned four and five component slag systems. In the meantime the standard free energy for CaFeSiO4 formation at the temperatue interval of 1258-1370℃ has been determined.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
1992年第2期23-31,共9页
Journal of Iron and Steel Research
关键词
数学模型
氧化能力
炉渣结构
slag structure, coexistence theory, oxidizing capability of slag melts, calculating model
