| 成庄矿3#煤矸石特征温度的热重实验研究 |
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| 引用本文： | 邬剑明,卫鹏宇,王俊峰,徐明敏. 成庄矿3#煤矸石特征温度的热重实验研究[J]. 中国煤炭, 2011, 37(12) |
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| 作者姓名： | 邬剑明 卫鹏宇 王俊峰 徐明敏 |
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| 作者单位： | 1. 太原理工大学矿业工程学院,山西省太原市,030024
2. 晋城煤业集团成庄矿,山西省晋城市,048021 |
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| 摘 要： | 采集成庄矿3#煤矸石样,通过对其进行不同粒度、不同氧气浓度和不同升温速率的热重实验,分析出煤矸石氧化燃烧过程中9个特征温度,即高位吸附温度T1、临界温度T2、干裂温度T3、活性温度T4、增速温度T5、着火温度T6、最大失重速率点温度T7、失重转折点温度T8和高温阶段最大失重速率点温度T9,并确定出了相应的温度范围.根据实验得到的48组不同的TG、DTG和DTA曲线分析得出:在升温速率和粒度不变的情况下,随着氧气浓度的升高,T1及在T1上的失重量基本不变,其余温度及其温度所对应的失重量降低,最终产物的质量比亦增大；在升温速率和氧气浓度一定的情况下,随着煤矸石粒度的增大,T1、T2、T3、T8和T9升高,但对于T4、T5、T6及T7影响很小.
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| 关 键 词： | 煤矸石 热重分析 特征温度 粒度 氧气浓度 DTA曲线 |
Thermogravimetric analysis on characteristic temperatures of No.3 coal gangue from Chengzhuang coal mine |
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| Wu Jianming , Wei Pengyu , Wang Junfeng , Xu Mingmin. Thermogravimetric analysis on characteristic temperatures of No.3 coal gangue from Chengzhuang coal mine[J]. China Coal, 2011, 37(12) |
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| Authors: | Wu Jianming Wei Pengyu Wang Junfeng Xu Mingmin |
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| Affiliation: | Wu Jianming1,Wei Pengyu1,Wang Junfeng1,Xu Mingmin2(1.College of Mining Engineering,Taiyuan University of Technology,Taiyuan,Shanxi 030024,China,2.Chengzhuang Coal Mine,Jincheng Anthracite Coal Mining Group,Jinchen,Shanxi 048021,China) |
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| Abstract: | The coal gangue samples from Chengzhuang coal mine were analyzed on a thermoanalyzer in terms of different particle sizes,different oxygen concentrations and different heating rates.Nine characteristic temperatures and their temperature ranges,namely physical adsorption temperature T1,critical temperature T2,dry temperature T3,activation temperature T4,speed-up temperature T5,ignition temperature T6,temperature T7 at maximum weight loss rate,temperature T8 at weight-loss turning point and temperature T9 at ... |
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| Keywords: | coal gangue TG analysis characteristic temperature particle size oxygen concentration DTA |
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