Study on the Thermal Effect of Clay Minerals Under Different Heating Rate——Taking the Bentonite from Santai, Sichuan Province as an Example

• 责任者：Zhang Xianghui (College of Materials and Chemical & Chemistry Engineering ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Wang Ling
• 刊名：Journal of Mineralogy and Petrology
• 出版年：2010
• 卷期：30(2)
• 关键词：粘土矿物 ; clay minerals ; 差热分析 ; differential thermal analysis ; 四川 ; Sichuan Province
• 页码：p.1-6
• 图表：6 illus., 2 tables, 10 refs.
• 分类号：0700
• issnNo：ISSN1001-6872
• isbnNo：CN51-1143/TD

Ca-bentonite from Santai, Sichuan Province was used to study the thermal effect of clay minerals under different heating rates by thermogravimetry analysis(TG/DTG) and differential scanning calorimetry (DSC/DDSC).  It demonstrated that the heating rate had a strong influence on the thermal effect of clay mineral as following: 1) thermogravimetry analysis showed a relative mass change and the result was inversely proportional with the heating rate; 2) when heating temperature is beyond 400 ℃, the resolution of the sample DTG, DSC curves was inversely proportional with the heating rate; and 3) beyond 400 ℃, the resolution of dehydration reaction of clay mineral was the highest.