【摘要】：利用熱失重分析儀(TGA),在不同升溫速率、不同終態(tài)溫度下恒溫一段時(shí)間等實(shí)驗(yàn)條件下,分別考察了脫硫石膏的熱脫水特性。結(jié)果表明:升溫速率越大,脫硫石膏結(jié)晶水開始失重和結(jié)束失重的溫度越高,脫硫石膏結(jié)晶水失重速度越快;終態(tài)溫度越高,脫硫石膏結(jié)晶水開始失重的時(shí)間越長,結(jié)束失重的時(shí)間越短,結(jié)晶水失重速率越大。終態(tài)溫度為1000℃時(shí),脫硫石膏出現(xiàn)3次失重,第1次失重是脫硫石膏失去自由水的緣故,第2次失重的原因是脫硫石膏失去結(jié)晶水,第3次失重是脫硫石膏中的雜質(zhì)碳酸鈣分解所致。
[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，

本文編號：2240562