从苏皖凹凸棒石粘土制备纯凹凸棒石  

PREPARATION OF PURE PALYGORSKITE FROM PALYGORSKITE CLAYS IN JIANGSU AND ANHUI

作　　者：陈天虎[1] 彭书传[1] 黄川徽[1] 史晓莉[1] 冯有亮[1] 

机构地区：[1]合肥工业大学资源与环境工程学院,合肥230009

出　　处：《硅酸盐学报》2004年第8期965-969,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金 ( 4 0 0 72 0 17)资助项目

摘　　要：通过扫描电镜、透射电镜、XRD等手段分析了来自苏皖的 12个凹凸棒石粘土矿床的组分 ,表明按凹凸棒石主要矿物组合可划分成 6种矿石类型 ,并根据分析结果选择了凹凸棒石型矿石来制取纯样。提纯是用EDTA络合、碳酸钠洗涤、离心及微孔滤膜过滤等步骤相继除去矿石中的碳酸盐、非晶蛋白石、石英等。所得样品纯度经XRD和透射电镜检验评价 ,纯度大于 98%。Through the analysis of the mineral components of 12 sites of palygorskite clay deposits in Jiangsu and Anhui by SEM, TEM, XRD, it is illuminated that the main minerals composition of the ores can be divided to 6 types. According to this analysis results, the ore of palygorskite type is selected to preparing the pure palygorskite sample. The impurities of carbonate, amorphous opal, quartz etc. are removed successively by the steps of soda washing, EDTA (Ethylene diamine tetraacetic acid) complex, centrifuging, micro-pore film filter etc. The purity of pure palygorskite prepared is evaluated and more than 98% according to the results of XRD and TEM investigation.

关 键 词：凹凸棒石 提纯 X射线衍射 透射电镜 

分 类 号：P579[天文地球—矿物学]