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Estimation of Reaction Heat in Ti-Bearing Blast Furnace Slag—Sulfuric Acid System Based on Mechanical Mixture Model
Mining, Metallurgy & Exploration ( IF 1.5 ) Pub Date : 2021-02-01 , DOI: 10.1007/s42461-021-00399-7
Zhuoying Yang , Fan Yang , Meigui Yi , Lan Xiang

This paper reported the calculation of the reaction heat in titanium-bearing blast furnace slag (abbreviated as TBFS)-H2SO4 system based on estimation of thermodynamic data of CaTiAl2O6 by mechanical mixture model. The thermodynamic analysis indicated that CaTiAl2O6 was more stable than the corresponding ternary oxides as CaO·TiO2, CaO·Al2O3, and Al2O3·TiO2. TBFS-H2SO4 system was highly exothermic since all of the reactions involved in the system were exothermic. For example, the increase of temperature from 25 to 200°C led to the increase of the release of the reaction heat in TBFS (100.0g)-H2SO4 system from 181.28 to 189.73kJ. Eighty-five to 90% of the reaction heat in TBFS-H2SO4 system was contributed by the reactions among CaTiAl2O6, CaTiO3, CaMgSi2O6, and H2SO4.



中文翻译:

基于机械混合模型的含钛高炉渣-硫酸系统反应热估算

本文利用机械混合模型估算CaTiAl 2 O 6的热力学数据,报道了含钛高炉矿渣(缩写为TBFS)-H 2 SO 4体系中反应热的计算。热力学分析表明,CaTiAl 2 O 6比相应的三元氧化物CaO·TiO 2,CaO·Al 2 O 3和Al 2 O 3 ·TiO 2稳定。TBFS-H 2 SO 4由于系统中涉及的所有反应都是放热的,因此该系统是高度放热的。例如,温度从25°C升高到200°C,导致TBFS(100.0g)-H 2 SO 4系统中反应热的释放从181.28增加到189.73kJ。在的TBF-H的反应热的八十五到90%2 SO 4系统CaTiAl中贡献的反应2 Ó 6,的CaTiO 3,的CaMgSi 2 ö 6 H,和2 SO 4

更新日期:2021-02-02
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