| 摘要: |
| 通过对铜川自燃煤矸石进行分拣、粉碎、过筛，利用X射线荧光光谱仪、等离子体发射光谱仪、X射线衍射（XRD）仪、同步热分析仪对铜川自燃煤矸石进行检测.研究了不同矿物以及成分对煤矸石活化性能的影响，并通过抗压强度法对自燃煤矸石活性进行了验证.结果表明：铜川煤矸石在自燃过程中形成的活性物为无定形SiO2，κ Al2O3和无定形Al2O3，其结晶度的高低决定了自燃煤矸石活性的高低，同时自燃过程中煤矸石的疏松程度也会影响其活性.通过测定Si4+，Al3+溶出量及利用XRD分析结晶度可以快速测定自燃煤矸石的活性. |
| 关键词: 自燃煤矸石 活化性能 X射线衍射 结晶度 |
| DOI：10.3969/j.issn.1007 9629.2013.03.021 |
| 分类号: |
| 基金项目: |
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| Study on Activation Properties of Spontaneous Combustion Coal Gangue |
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SUN Zhi hua1, LIU Kai ping1, WANG Min qiang2, WANG Zhu ming3, YANG Fei peng1
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1.School of Materials Science and Engineering, Changan University, Xian 710061, China;2.Electronic Materials Research Laboratory, Xian Jiaotong University;3.Key Laboratory of Western Chinas Mineral Resources and Geological Engineering, Ministry of Education, Changan University,Xian 710054, China
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| Abstract: |
| Activation properties analysis of spontaneous combustion coal gangue was carried out after selecting, crushing, milling and sieving the coal gangue. X ray fluorescent spectrometey(XRF), inductively coupled plasma atomic emission spectrometry(ICP AES), X ray diffraction(XRD) and thermal analyzer were employed to analyze the effect of different mineral and different composition on activation properties, and compressive strength testing was employed to test the activation properties of spontaneous combustion coal gangue. The results indicate that the active substance in spontaneous combustion coal gangue is amorphous SiO2, amorphous Al2O3 and κ Al2O3; the activation properties are improved with decreasing crystallization rate; and the activation properties are affected by the structure loose ratio. The activation properties can be quickly tested through the solution of Si4+ and Al3+, or the crystallization rate determined by XRD. |
| Key words: spontaneous combustion coal gangue activation property X ray diffraction(XRD) crystallization rate |
