| 岩峰白云岩的热分解特性研究 |
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| 引用本文： | 吴芸芸,;何明中,;赵敏伦,;许聚良. 岩峰白云岩的热分解特性研究[J]. 武汉冶金科技大学学报, 2009, 0(5): 500-504 |
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| 作者姓名： | 吴芸芸, 何明中, 赵敏伦, 许聚良 |
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| 作者单位： | [1]武汉科技大学耐火材料与高温陶瓷国家重点实验室培育基地,湖北武汉430081; [2]中国地质大学（武汉）材料科学与化学工程学院,湖北武汉430072 |
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| 基金项目： | 湖北省科技攻关资助项目（2003AA101C67） |
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| 摘 要： | 采用热分析技术和高温X射线衍射技术对岩峰白云岩的热分解特性进行了研究。结果表明,岩峰白云岩的热分解无明显分阶段进行的特征,分解产物MgO和CaO相基本上同时形成,最大分解反应速率出现在763℃左右,至800℃时岩峰白云岩已分解完全;增大试样量可导致岩峰白云石热分析曲线由单峰向双峰转变,同时峰温向高温侧移动。
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| 关 键 词： | 白云石 热分解 TG-DTG 高温XRD |
Thermo-decomposition characteristics of Yanfeng dolomite |
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| Affiliation: | Wu Yunyun,He Mingzhong,Zhao Minlun,Xu Juliang(1.The State Key Laboratory Breeding Base of Refractories and Ceramics,Wuhan University of Science and Technology,Wuhan 430081,China;2.College of Materials Science and Chemical Engineering,China University of Geosciences,Wuhan 430072,China) |
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| Abstract: | Thermo-decomposition characteristics of Yanfeng dolomite have been investigated by means of TG-DTG technique and high-temperature X-ray diffraction.The results show that the decomposing of Yanfeng dolomite does not come in stages,i.e.there is only one peak on the DTG curve and MgO and CaO form almost at the same time.The decomposition ratio of Yanfeng dolomite reaches the maximum at about 763 ℃ and the decomposition ends at about 800 ℃.Increasing the mass of Yanfeng dolomite sample will result in that the peak divides into two peaks and meanwhile the peak temperature moves toward the higher side. |
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| Keywords: | dolomite thermo-decomposition TG-DTG high-temperature XRD |
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