高温固硫物相硫铝酸钙在不同气氛下的动力学实验研究  

STUDY ON KINETICS OF HIGH TEMPERATURE DESULFURIZATION PHASE OF CALCIUM ULPHOALUMINATE AT DIFFERENT ATMOSPHERE

作　　者：王丽[1] 李金洪[1] 杨静[1] 

机构地区：[1]中国地质大学矿物材料国家专业实验室,北京100083

出　　处：《矿物岩石》2009年第3期23-28,共6页Mineralogy and Petrology

基　　金：国家自然科学基金资助项目(40602008);矿物材料国家专业实验室开放课题(07008B)

摘　　要：在分析3CaO.3Al2O3.CaSO4(C4A3S)生成反应热力学参数的基础上,结合变温XRD实验,研究C4A3S在静态空气、流动O2和流动Ar条件下生成的动力学过程,并探讨气氛对C4A3S生成的影响。静态空气下,CA3S生成反应表观活化能Ea=228 kJ/mol;流通O2气氛下,Ea=68 kJ/mol;流通Ar气氛下,Ea=254 kJ/mol。O2气氛能有效地降低C4A3S生成反应表观活化能,惰性(Ar)的贫氧气氛不利于C4A3S生成。Dynamic parameters of calcium sulphoaluminate formed in different atmosphere were caculated. Dynamic X-ray diffraction analyses were also used to study the formation of C4A3S at different sintering temperature. The experimental results showed that the activation energy of the C4A3S formation reaction was 228 kJ/mol in the static air atmosphere,at 68 kJ/mol in the flowing O2 atmosphere and at 254 kJ/mol in the flowing Ar atmosphere. O2 atmosphere could decrease activation energy of the reaction effectively,while inert atmosphere （Ar） increased activation energy in minor degree.

关 键 词：硫铝酸钙 动力学 活化能 气氛 

分 类 号：P578.298[天文地球—矿物学]