利用碳气化反应热力学的影响因素调控铁氧化物的碳热还原热力学  

Control of Thermodynamics of Carbothermic Reduction of Iron Oxides by Using Factors Impacting Thermodynamics of Carbon Gasification

作　　者：布林朝克[1] 郭婷[2] 

机构地区：[1]内蒙古科技大学稀土学院,内蒙古包头014010 [2]内蒙古科技大学能源与环境学院,内蒙古包头014010

出　　处：《矿冶工程》2014年第1期77-81,86,共6页Mining and Metallurgical Engineering

基　　金：国家自然科学基金项目(51164026;50704021);内蒙古自然科学基金项目(2012MS0710)

摘　　要：分析了温度、碳储能、反应体系总压和惰性气体分压等因素对碳气化反应热力学的影响规律,并根据碳气化反应和铁氧化物的碳热还原反应之间的热力学联系,提出利用碳气化反应热力学的影响因素调控铁氧化物的碳热还原热力学,从而降低碳热还原温度,实现节能降耗的新思路:一是可利用碳气化反应热力学的影响因素降低铁氧化物的碳热还原温度;二是使Fe2O3在低于570℃下经Fe2O3→Fe3O4→Fe还原顺序被碳热还原为Fe。Analyses were conducted on the impacts of temperature, stored energy in carbon, total pressure of reaction system and fractional pressure of inert gas on the thermodynamics of carbon gasification. On the basis of the correlation between the thermodynamics of carbon gasification and thermodynamics of carbothermic reduction of iron oxides, a new idea was put forward, that is, the thermodynamics of carbothermic reduction of iron oxides was controled by using factors impacting the thermodynamics of carbon gasification, resulting in a reduced energy saving and consumption reduction. The carbothermic reduction of Fe203 to Fe can be achieved at the temperature of 570 ℃with reduction in the sequence of Fe2O3→Fe304→Fe.

关 键 词：石墨 储能 铁氧化物 总压 惰性气体分压 碳气化反应 碳热还原 热力学 

分 类 号：TF01[冶金工程—冶金物理化学]