硅藻土/紫砂多孔过滤陶瓷的制备与性能研究  

Preparation and Characterization of Diatomite/Red Porcelain Porous Ceramic Filter

作　　者：李倩[1] 漆小鹏[1] 邓城 

机构地区：[1]江西理工大学材料科学与工程学院,江西赣州341000

出　　处：《非金属矿》2016年第5期55-57,共3页Non-Metallic Mines

摘　　要：以硅藻土和紫砂黏土为主要原料,采用干压成型方法,在不同温度下（1000~1100℃）烧结制备了硅藻土基多孔陶瓷,测试了样品孔隙率和体积密度的变化,结合压汞仪、扫描电子显微镜和X射线衍射谱等测试手段对材料性能进行表征,并测试了材料的过滤性能。结果表明,随着烧结温度的升高,材料孔隙率从72%下降到58%,最大孔径也在1~10μm变化,高温下硅藻土中的无定型Si O2转变为石英和方石英,制备的多孔陶瓷材料有着较高的过滤速率和优良的水体净化除杂能力。Diatomite/red porcelain porous ceramics were prepared by means of dry pressing process at different sintering temperature （1000-1100℃）. The materials were characterized by mercury injection apparatus, scanning electron microscopy and X-ray diffraction. The porosity and filtering performance of the materials were tested. Results show that the porosity of materials decrease from 72% to 58% and the maximum pore sizes range from 1 μm to 10 μm with increased temperatures. The amorphous silica of diatomite were transformed into quartz or cristobalite under high temperature. The prepared ceramics exhibit a high filtration rate and purification ability of water bodies.

关 键 词：硅藻土 多孔陶瓷 烧结温度 过滤性能 

分 类 号：TQ174[化学工程—陶瓷工业]