凹凸棒石粘土的物化性质研究进展.pdf

20 13 年第1期 　中国非金属矿工业导刊 总第1 01期 【开发利用】 凹凸棒石粘土的物化性质研究进展 1 1,2 1,2 1 1 张彦灼 ，任　珺 ，陶　玲 ，刘丽莉 ，刘 辉 , （1.兰州交通大学环境与市政工程学院，甘肃 兰州 730070； 2.甘肃双泰凹土科技有限公司，甘肃 兰州 730070） 【摘　要】凹凸棒石粘土具有吸附性、载体性、阳离子交换能力、流变性、催化性等物化性质。同时，酸、热、提纯和 有机改性等处理方式会对凹凸棒石粘土物化性质产生影响，能显著改善和提高凹凸棒石粘土的物化性质。其中，酸改变其带 电性、吸附活性、阳离子交换容量和比表面积；随着温度的升高，热处理使其比表面积不断提高到最大值再急剧下降；提纯 可以改善胶体性能；有机改性可以使粘土颗粒表面由完全的亲水性转变为部分疏水性，改变比表面积和阳离子交换容量，增 强胶体悬浮性能。 【关键词】凹凸棒石粘土；吸附性；酸；热；盐交换；提纯；有机改性 【中图分类号】P 578 .94 【文献标识码】A 【文章编号】1007-9386 (2013 ) 01 -0024 -03 Research Progress on Physical and Chemical Properties of Attapulgite Clay 1 1,2 1,2 1 1 ZHANG Yan-zhuo , REN Jun , TAO Ling , LIU Li-li , LIU Hui (1. School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; 2. Gansu Shuangtai Attapulgite Clay Technology Co., Ltd., Lanzhou 730070, China) Abstract: Attapulgite clay has adsorption, carrier, cation exchange capacity, rheological properties, catalysis and other physical and chemical properties. Meanwhile, the treatment of acid, heat, salt exchange, purification and organic modification can effect and signifi- cantly improve the physicochemical properties of attapulgite clay. Among them, the acid changes its charged, adsorption, cation exchange capacity and specific surface area; With the rise of temperature, heat makes its surface area increasing to a maximum and then declined sharply; Purification improves colloid performance; Organic modification makes the particle surface of clay translate from full hydropho- bic to part hydrophilic, changes the specific surface area and cation exchange capacity, enhances the perfor