CAJ | 학술논문

采用TG-DSC联合热分析方法开展污泥陶粒坯料的热反应特性研究，深入了解反应机理。根据试验所得TG曲线，分析其失重率，结合相应的温度段，判断陶粒在加热过程中发生的反应。采用多重扫描速率的不定温法，进行多条TG曲线的动力学分析，求取陶粒坯料的活化能，对三个扫描速率的热分解曲线进行多元非线性拟合，推断出最概然反应机理函数。分析结果表明：试样总的热失重率随升温速率的增加而单调增加；陶粒烧制过程升温速率不宜过快；预热温度为320～350℃；陶粒的烧成过程主要有四个阶段；陶粒坯料的热分解反应最概然机理是三步反应（ t；i；i）；超轻陶粒的烧结温度控制在1150～1200℃之间，高强陶粒的烧结温度控制在1150℃左右。
채용TG-DSC연합열분석방법개전오니도립배료적열반응특성연구，심입료해반응궤리。근거시험소득TG곡선，분석기실중솔，결합상응적온도단，판단도립재가열과정중발생적반응。채용다중소묘속솔적불정온법，진행다조TG곡선적동역학분석，구취도립배료적활화능，대삼개소묘속솔적열분해곡선진행다원비선성의합，추단출최개연반응궤리함수。분석결과표명：시양총적열실중솔수승온속솔적증가이단조증가；도립소제과정승온속솔불의과쾌；예열온도위320～350℃；도립적소성과정주요유사개계단；도립배료적열분해반응최개연궤리시삼보반응（ t；i；i）；초경도립적소결온도공제재1150～1200℃지간，고강도립적소결온도공제재1150℃좌우。
Using TG-DSC combined with thermal analysis method to carry out the study on thermal reaction characteristics of sludge ceramisite mixture specimen in order to have a deep understanding of the reaction mechanism. According to the experimental analysis of TG curve,the rate of weight loss can be analyzed. The reaction of ceramisite mixture in the heating process can also be judged by com-bining the corresponding temperature. Using the method of multiple scan rate under non constant temperature to carry on the dynamic a-nalysis of TG curve,activation energy of ceramic mixture could be obtained. Then infer the most probable reaction mechanism function by the nonlinear multiple regression of thermal decomposition curves on three scanning rate. The results of analysis show that with the increasing of heating rate,the total heat loss rate of the sample will also increase. The heating rate should not be too fast in the process of burning ceramic. The preheating temperature should be 320 ℃ to 350 ℃. The firing process of ceramisite has four stages. The most probable mechanism of ceramisite mixture′s thermal decomposition reaction is the three step reaction( t;i;i). The sintering temperature of ultra light haydite should be controlled between 1 150 ℃ to 1 200 ℃,while the sintering temperature of high strength haydite ought to be controlled at about 1 150 ℃.