热失重实验法研究脱硫石膏的脱水特性
发布时间：2018-09-13 08:08
【摘要】：利用热失重分析仪(TGA),在不同升温速率、不同终态温度下恒温一段时间等实验条件下,分别考察了脱硫石膏的热脱水特性。结果表明:升温速率越大,脱硫石膏结晶水开始失重和结束失重的温度越高,脱硫石膏结晶水失重速度越快;终态温度越高,脱硫石膏结晶水开始失重的时间越长,结束失重的时间越短,结晶水失重速率越大。终态温度为1000℃时,脱硫石膏出现3次失重,第1次失重是脱硫石膏失去自由水的缘故,第2次失重的原因是脱硫石膏失去结晶水,第3次失重是脱硫石膏中的杂质碳酸钙分解所致。
[Abstract]:The thermal dehydration characteristics of desulphurized gypsum were investigated by thermogravimetric analyzer (TGA),) under the conditions of different heating rate and different final state temperature for a period of time. The results show that the higher the heating rate, the higher the temperature at which the weight loss of desulphurization gypsum crystallization water begins and ends, the faster the weight loss rate of desulfurized gypsum crystal water is, and the longer the weight loss time of desulphurized gypsum crystallization water begins with the increase of final state temperature. The shorter the time to end weightlessness, the greater the weight loss rate of crystalline water. When the final temperature is 1000 鈩，
本文编号：2240562
[Abstract]:The thermal dehydration characteristics of desulphurized gypsum were investigated by thermogravimetric analyzer (TGA),) under the conditions of different heating rate and different final state temperature for a period of time. The results show that the higher the heating rate, the higher the temperature at which the weight loss of desulphurization gypsum crystallization water begins and ends, the faster the weight loss rate of desulfurized gypsum crystal water is, and the longer the weight loss time of desulphurized gypsum crystallization water begins with the increase of final state temperature. The shorter the time to end weightlessness, the greater the weight loss rate of crystalline water. When the final temperature is 1000 鈩，
本文编号：2240562
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