工程科学学报2016，Vol.38Issue(5)：617-622,6.DOI:10.13374/j.issn2095-9389.2016.05.004
HCl气体在烧结矿表面的吸附机理及特性
Adsorption mechanism and characteristics of HCl gas on the sinter surface
摘要
Abstract
The adsorption mechanism of HCl gas on the sinter surface was simulated and calculated based on the density function-al theory, and the adsorption characteristics were experimentally investigated at different reaction temperatures, sinter particle sizes and HCl gas rates. It is found that the maximum adsorption energy of HCl on the α- Fe2O3(001) surface is -175. 91 kJ·mol-1, which is chemical adsorption. Cl atoms react with Fe atoms of the substrate surface and form Fe- Cl bonding. After adsorption, the bonding length of Fe-O becomes shorter, and the binding energy gets bigger, which makes the structure of Fe2 O3 become more close-ly. The combination of Cl atoms and H atoms becomes weaker because Fe-Cl bonding forms. Temperature has a great influence on the chlorine adsorption content on the sinter surface. The chlorine adsorption content of sinter obviously increases with increasing tempera-ture, gradually decreases with increasing sinter particle size, and quickly increases with increasing HCl gas rate.关键词
烧结/氯化氢/表面吸附/吸附机理/高炉Key words
ore sintering/hydrogen chloride/surface adsorption/adsorption mechanisms/blast furnaces分类
矿业与冶金引用本文复制引用
张淑会,兰臣臣,吕庆,孙艳芹,武兵强..HCl气体在烧结矿表面的吸附机理及特性[J].工程科学学报,2016,38(5):617-622,6.基金项目
国家自然科学基金资助项目(51174074) （51174074）
河北省钢铁联合基金资助项目(E2015209073) （E2015209073）
