中国北方砂岩型铀矿床中,矿石中一大部分是以吸附状态存在的,当固体物质与周围介质相接触时,固体表面具有不同程度地具有吸着粘附介质中的分子或离子以降低其表面自由能的能力,这种现象称为吸附作用。原因是由于分子键力(范德华力)或部分化学键力以及由于异性电荷相吸(极性吸附)的缘故。粘土矿物是地球表 In the sandstone-type uranium deposit in northern China, a large part of the ore exists in an adsorbed state. When the solid material is in contact with the surrounding medium, the solid surface has, to varying degrees, molecules or ions adsorbed in the adherent medium to lower the surface The ability of free energy, this phenomenon is called adsorption. The reason is due to molecular bonding (van der Waals forces) or partial chemical bonding and the attraction of polar charges (polar adsorption). Clay minerals are Earth’s surface