Study of the reaction mechanism and composition analysis of multiple-component mixed minerals DTA/T/EGD/GC on-line coupled simultaneous technique |
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Authors: | Gencai Cai |
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Institution: | (1) East China University of Science and Technology, 200237 Shanghai, P. R. China |
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Abstract: | An established DTA/T/EGD/GC on-line coupled simultaneous technique and relevant equipment were applied to identify the micro impurity minerals—pyrite and siderite in two kinds of dolomite in air and N2. The proportional five-component mixed minerals (siderite, kaolinite, dolomite, calcite and quartz) and the proportional six-component mixed minerals (pyrite and the above five minerals) were detected in N2 and in air/CO2 (1∶1) separately by applying DTA/EGD/GC and DTA/GC. The experimental results provide the basis for demonstration of the reaction mechanism of thermal decomposition of various gas—solid-phase minerals in N2 and air/CO2. The compositions of six-component mixed minerals can be distinguished individually from the DTA/GC curves; reliable results are obtained. |
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Keywords: | calcite differential thermal analysis dolomite gas chromatography kaolinite pyrite siderite |
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