TIAN Yuming 1, LIU Aiping 1, ZHAO Pengfei 1, KONG Xiangchen 1, CHAI Yuesheng 1, LI Zhangang 2
(1. School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, Shanxi, China; 2. Yangquan Changqing Petroleum Proppant Co., Ltd., Yangquan 045240, Shanxi, China )
Abstract: Low density and mullite-quartz ceramic proppants were obtained by adding 65.6% bauxite and silica powder. The microstructure analysis and phase characterization of the samples sintered at different temperatures were carried out using SEM and XRD separately. The influence of sintering temperature on compressive strength, bulk density, apparent porosity, and linear shrinkage rate of mullite-quartz ceramic proppants was discussed. The experiment results show: (1) the sintering range of low density and mullite-quartz ceramic proppants is 1400 ~ 1450 ℃; (2) the main phases of the mullite-quartz ceramic proppants are mullite and quartz. When the sintering temperature is right in the sintering range, mullite and quartz phases are fully developed. The microstructure is dense and the mechanical properties are very good.
Key words: ceramic proppant; mullite; sintering temperature