WANG Zhumei, LI Yueming, SHEN Zongyang, CHENG Yue, HONG Yan

(Jingdezhen Ceramic Institute, Jingdezhen Jiangxi 333001, China)

Abstract:Kaolin samples were collected from Xingfengcun in Bijie city of Guizhou province, then handpicked and ball-milled to pass a 80 -mesh sieve for analysis. The chemical compositions, mineral compositions, physicochemical properties and microstructures of the kaolin samples were investigated by XAF, XAD, DTA-TG, FE-SEM and TEM. Various processing properties of these minerals were observed. The results indicate that Xinfengcun kaolin is mainly composed of kaolinite (83.23wt%) and halloysite (15.93wt%). It belongs to clay minerals. The kaolinite shows typical sheeting or layered structure, while the halloysite shows hexagonal tubular structure.

Key words:kaolin; clay mineral; physicochemical property; processing property; Bijie