摘要
应用ＤＴＡ／Ｔ／ＥＧＤ／ＧＣ在线联用技术，在空气下鉴定了白云石中的微量黄铁矿；在ＣＯ＿２、Ｎ＿２、空气和空气／ＣＯ＿２（１：１）混合气下分别对配合的黄铁矿、菱铁矿、高岭石、白云石、方解石、石英六元混合矿物的热行为进行了考察。在上述实验基础上，以空气／ＣＯ＿２（１：１）混合气下测得的ＤＦＡ／ＧＣ联用曲线所提供的信息为依据，对六元混合矿物的组成逐一加以鉴定，取得了可信的实验结果。
By applying on established DT A/T/EGD/GC on-line coupled simultaneoustechnique and relevant equipments,the trace siderite in the dolomite was identified in CO_2 andair and the purity of calcite was determined in air.The composition analysis of five-compo-nent mixed minerals of siderite,kaolinite,dolomite,calcite and quartz has been analyzed inN_2.The experimental results indicate:the mixed minerals of the dolomite/calcite(1:1)gen-erate thermal decomposition in CO_2, three endothermic effects of releasing CO_2 appear on theDTA curves,so the discrimination can be obtained by the characteristic peaks.
出处
《华东理工大学学报（自然科学版）》
CAS
CSCD
1995年第2期256-261,共6页
Journal of East China University of Science and Technology
关键词
菱铁矿
白云石
方解石
矿物分析
高岭石
石英
differential thermal analysis
gas chromatography
evolved gas detection
siderite
dolomite:calcite
