Abstract: In this study，a hydrothermal method has been used to investigate the solidification of clinoptilolite，particularly focusing on the effects of hydrothermal curing time and amount of distill water on specimens’ properties. The hydrothermal hardening mechanism of clinoptilolite is studied through X-ray diffraction analysis and Fourier transforms infrared analysis. The results showed that experimental conditions of 30 MPa pressure，0.8 calcium silicon ratio，10% water content and 12 hours curing time under 200 ℃，will make the flexural strength of clinoptilolite achieve maximum，and the mechanism analysis showed that tobermorite played an important role in the flexural strength development of clinoptilolite in the hydrothermal process.

Key words: clinoptilolite, hydrothermal synthesis, tobermorite

摘要： 采用水热法对斜发沸石进行固化，研究了水热固化时间及加水量等因素对沸石性能的影响。利用X射线衍射分析和傅里叶变换红外分析手段，探讨了斜发沸石的水热固化机理。结果表明成型压强30 MPa、钙硅比为0.8、加水量为10%、200 ℃水热固化12 h时，斜发沸石抗折强度达到最大，机理分析表明斜发沸石水热固化强度的增大是源于托勃莫来石晶相的逐渐结晶长大。

关键词: 斜发沸石, 水热固化, 托勃莫来石