酸活化和热活化对海泡石显微结构的影响  

Influence of Acid-and Heat-activated Sepiolite on Its Microstructure

作　　者：李计元[1] 周彩楼[1] 马玉书[1] 张永刚[1] 张颖[1] 

机构地区：[1]天津城市建设学院材料科学与工程系,天津300384

出　　处：《非金属矿》2008年第6期13-15,共3页Non-Metallic Mines

摘　　要：海泡石是一种天然的纤维状硅酸盐黏土矿物,具有孔道结构和优良的吸附性能。利用XRD和IR分析了酸活化和热活化对海泡石微观结构的影响。结果表明,酸活化可去除海泡石中的杂质,还可使骨架镁逐步脱除。热活化温度大于300℃时,结晶水开始脱除。600℃以内海泡石结构基本稳定。Sepiolite is a natural fibrous silicate clay minerals with channel structure and excellent adsorbability. The effect of acid- and heatactivated sepiolite on its microstructure was studied by X-ray diffraction and infrared. The results showed acid-activation can make sepiolite purify and remove Mg2＋ in the structure gradually. When the temperature of heat-activation was over 300℃ coordinated water began to decrease. The structure of sepiolite remains stable below 600℃.

关 键 词：海泡石 吸附性能 酸活化 热活化 显微结构 

分 类 号：TD97[矿业工程—选矿]