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Metallurgical Engineering 冶金工程, 2017, 4(1), 6-11 Published Online March 2017 in Hans. /journal/meng /10.12677/meng.2017.41002 Thermodynamic Calculation of High Alumina Limonite during the Process of Direct Reduction * Shanju Zheng , Xiaodong Hao, Yicheng Hong, Lijun Xu, Yanan Bai Beijing CISRI-NMT Engineering Technology Co., LTD, Beijing th th st Received: Mar. 9 , 2017; accepted: Mar. 28 , 2017; published: Mar. 31 , 2017 Abstract The thermodynamics of high aluminum limonite during direct reduction was investigated by thermodynamic calculation. The results show that when the reaction temperature was 980 K and the volume fraction of CO was 62%, metal Fe starts generating. When the system temperature is over 1100 K, reaction products were according to following subsequence FeO ⋅Al O , 2FeO ⋅SiO , 2 3 2 FeO ⋅SiO . Due to the inevitable producing of FeO in the process of direct reduction, the reactivity 2 ranking of various reactants under the same volume fraction of CO and temperature is FeO ⋅SiO 2FeO ⋅SiO FeO ⋅Al O , which will affect the metallization rate of iron in the direct 2 2 2 3 reduction process of high alumina limonite. Keywords High Alumina Limonite, Direct Reduction, Thermodynamics, CO 高铝褐铁矿直接还原过程中的热力学计算 * 郑善举 ，郝晓东，洪益成，徐立军，白亚楠 北京钢研新冶工程技术中心有限公司，北京 收稿日期：2017年3月9 日；录用日期：2017年3月28 日；发布日期：2017年3月31 日 摘 要 通过热力学计算，研究了高铝褐铁矿直接还原过程中的主要氧化物之间的反应热力学规律。计算结果表 *通讯作者。 文章引用:郑善举, 郝晓东, 洪益成, 徐立军