摘要
应用差热分析(DTA)/逸气检测(EGD)/气相色谱(GC)在线联同技术及其装置,对黄铁矿、菱铁矿、白云石在N_2、Air、CO_2、Air/CO_2气氛下的热行为进行了研究。依据测得的DTA/EGD/DC曲线所提供的信息,探讨了黄铁矿热氧化分解反应历程;鉴定了菱铁矿中的含硫杂质;考察了白云石在N_2、Air、CO_2气氛下的热行为。实验结果表明,把热分析与高灵敏度的逸气检测/逸气分析的联用技术应用于矿物学研究领域中,将更发挥其潜在的优越性和独特的效用。
By applying QDTA/T/EGD/GC on-line coupled simultaneous techniqueand relative equipment, the thermal behaviors or pyrite, siderite and dolomitehave been studied in various gas atmospheres such as N_2, Air, CO_2 and Air/CO_2. On line of the information developed from the DTA/T/EGD/GC curves measured, the reaction process involved in thermal oxidiative decomposition ofpyrite has been explored, the sulphur impurity in the siderite has been identi-fied, the thermal behavior of dolomite in the gas atmospheres such as N_2, air,CO_2 has been investigated. Experimental results indicate that by using the on-line coupled simultaneous technique of thermal analysis and high sensitive ev-olved gas detection/evolved gas analysis in the field of mineralogy study, thepotential advantages and superior effectiveness of thermal analysis are moreevident.
出处
《矿物学报》
CAS
CSCD
北大核心
1989年第4期330-337,共8页
Acta Mineralogica Sinica
关键词
黄铁矿
菱铁矿
白云石
差热分析
pyrite
siderite
dolomite
differential thermal analysis
gas chromatography
evolved gas detection
