中文摘要：

采用闭系震荡酸浸和煅烧法对硅藻土进行提纯处理，通过X射线荧光光谱（XRF），扫描电镜（SEM）和Brunauer-Emmett-Teller（BET）法等手段对纯硅藻土进行表征。结果表明：提纯后，硅藻土SiO2含量提高至98％左右，Fe2O3等杂质含量显著减少，多孔构造高度发育，比表面有较大提高。

英文摘要：

Abstract： Diatomite was treated with hydrochloric acid by shaking technique at closed system and calcined to remove impurities. The chemical compositions of diatomite before and after purification were characterized using X-ray fluorescence spectrometry; the morphology and microstructure of purified diatomite investigated by scanning electron microscopy and N： adsorption-desorption isothemls; The investigations indicated that the content of SiO2 increases to 98 %, and oxide impurities were decreases after diatomite was purified; the integrity of the porous structure and specific surface area increases remarkably.