Because the research on the hygroscopic property and the application in desiccant of attapulgite is lack, the study of this paper has an important meaning.

• 鉴于凹凸棒石粘土的吸湿性及其在干燥剂领域的应用研究不多,本文开展对凹凸棒石粘土干燥剂的制备及其性能研究具有一定的现实意义。