金顶铅锌矿围岩对Pb^2＋的吸附特征

采用电导法和分形几何理论等探讨了云南金顶铅矿围岩岩石静态条件下对Ｐｂ＾２＋的吸附特征。结果表明，对砂岩和角砾岩而言，溶解过程中溶液的ＰＨ值溶解时间的增加而升高，最后接近于７，且后者由于其致密性而使得ＰＨ增加较为缓慢；铅离子初始浓度较小时电导率随时间的增加而增大，初浓度高时则相反；吸附过程中伴随着岩石中的离子进入溶液，在本实验条件下，两种岩石对铅离子的吸附量较大，不同初浓度下的吸附量与平衡浓度进入溶

Adsorption Characteristics of Pb ~(2+) in Pb-Zn Mine Rock of Yunnan

Under the condition of static state, adsorption characteristics of rock in Pb Zn mine of Yunnan have been studied by using conductance method and fractal geometry theory. For sand rock and breccia , the pH of solution in the process of dissolving increases and finally approaches 7, and pH increases slowly for the later because of the compaction of breccia . The conductivity of solution increases with the increase of time when the concentration of Pb 2+ is lower, whereas when the concentration of Pb 2+ is higher. In the process of adsorption ions in rock are entered in solution. Adsorption capacities ( Q ) of two rocks are bigger, and the Q of Pb 2+ in them obey Freundlich experiential formula. The process of adsorption is fractal like, and mean while the kinetics equation is derived.Ability of adsorption of sand rock is weakened while the temperature of the solution is increased.