Studies on modified mechanism and catalytic activity of bentonite .

膨润土改性机理及催化性能研究。

The surplus barite , bentonite have to be transferred to the supply boat .

把多余的重晶石、土粉运到拖轮上。

The main characteristics of bentonite are small grains , large specific surface area , high exchange capability of cation . With the action of double layer , large quantity of aqueous particles can easily penetrate between the layers and action are adhered around the grains .

皂土主要特性是颗粒小，比表面积大、阳离子交换能力高，除分子间能容易使水分子进入，尤其有扩散电双层作用，可吸附大量水分子及阳离子於颗粒四周。

Bentonite may be used to solve this problem .

膨润土可用来解决这个问题。

Plus bentonite and expanded perlite .

加膨润土膨胀珍珠岩。