| TG—DSC联用技术在磷矿石热分解上的应用 |
| |
| 引用本文： | 王志颖,马林转,黄超.TG—DSC联用技术在磷矿石热分解上的应用[J].云南民族学院学报(自然科学版),2014(1):35-38. |
| |
| 作者姓名： | 王志颖 马林转 黄超 |
| |
| 作者单位： | 云南民族大学民族药资源化学国家民委-教育部重点实验室,云南昆明650500 |
| |
| 基金项目： | 国家自然科学基金（51062018）;云南民族大学大学生SRT创新性实验项目（2011HX04）. |
| |
| 摘 要： | 运用TG—DSC联用技术研究了磷矿石的热分解过程，得到了磷矿石在不同粒度、不同升温速率下的TG—DSC曲线．结果显示磷矿石在40～1100℃范围内可分为4次失重阶段；随着粒度的减小。TG曲线中的失重阶段更为明显和彻底，DSC曲线的吸热峰更为尖锐；随着升温速率的提高，磷矿石热解段起始和终止温度向高温侧移动，且失重率也有增大的趋势；使用Ozawa法计算了磷矿石在600～800℃吸热分解过程的活化能，平均值为202．80kJ/mol，为磷矿石的资源化利用提供依据．
|
| 关 键 词： | TG—DSC 磷矿石 活化能 |
Application to the thermal decomposition of phosphate ore with TG and DSC |
| |
| WANG Zhi-ying,MA Lin-zhuan,HUANG Chao.Application to the thermal decomposition of phosphate ore with TG and DSC[J].Journal of Yunnan University of The Nationalities(Natural Sciences Edition),2014(1):35-38. |
| |
| Authors: | WANG Zhi-ying MA Lin-zhuan HUANG Chao |
| |
| Institution: | ( Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission ＆ Ministry of Education, Yunnan University of Nationalities, Kunming 650500, China) |
| |
| Abstract: | The thermal decomposition process of phosphate ore was studied by using Thermogravimetric （TG） and Differential Scanning Calorimetric （DSC）. The TG-DSC curves reveal the features of different sizes and different heating rates . The result showed that phosphate ore had four weight loss stages at the range of 40-1 100 ℃. With the particle＇s size decreasing, the third weight loss stage becomes more obvious in TG curves and the endothermic peak becomes sharper in DSC curve; the starting and ending temperatures of the thermal decomposition process move to a higher degree and the weight loss rate also trends to increase; the activation energy of phosphate ore in the endothermic decomposition process has been calculated by Ozawa method in 600--800 ℃, and the average is 202.80 kJ / mol, which provides a basis for the utilization of phosphate ore. |
| |
| Keywords: | TG-DSC phosphate ore activation energy |
| 本文献已被 维普 等数据库收录！ |
