中国陶瓷

以阳泉长青Ⅲ级铝矾土和砂土为原料,在1420~1540℃下烧结制备了莫来石/石英质经济型陶粒支撑剂,研究了烧结温度对莫来石/石英质经济型陶粒性能的影响,并与目前市场上的支撑剂进行了详细的对比,得出这是一种性能优于天然石英砂、成本低于人造陶粒支撑剂的一种经济型陶粒支撑剂;并采用XRD和SEM等手段对陶粒支撑剂的性能和物相形貌进行了表征和分析。结果表明:在1510℃下烧结制备的陶粒支撑剂体密度为1.39 g·cm-3,视密度为2.78 g·cm-3,35 MPa下的破碎率为5.54%;在该温度下,莫来石晶相已经发育完全,且石英颗粒填充在莫来石形成的网络空间结构中,烧结致密化程度较高。

In this paper, the mullite/quartz economical ceramic proppant was sintered from 1420 ℃ to 1540 ℃ using three bauxite and sand from Yangquan Company as the main raw materials. And research the influence of sintering temperature on its properties. Comparing with the present proppants carefully, its performance is better than the natural quartz sand and its costs are less than artificial proppants. The microstructure analysis and phase characterization of different sintered bodies were carried out using SEM and XRD separately. The results showed that when the temperature is 1510 ℃, the bulk density was 1.39 g/cm3, the apparent density is 2.78 g/cm3, broken rate under the 35 MPa pressure was 5.54%. At this temperature, mullite and quartz basic phase have been fully developed and densification is very well, microstructure of rod-like mullite formation interlaced chain network structure, quartz filler in mullite formation of the space network structure in the gap.