原地浸出采铀的水岩作用研究

Research of Water-rock Interaction in In-situ Uranium leaching

原地浸出采铀时 ,含矿层会发生各种复杂的水岩作用。运用聚类分析方法研究溶浸液化学全分析数据发现 ,除了CO2 - 3 和HCO- 3 之外 ,其他组分呈正相关 ,而且有些组分密切正相关 ,说明它们的浓度变化规律很相似。根据含矿层矿物成分 ,分析了矿物和溶浸液之间的水岩反应 ,推出了反应方程式 ,并探讨了溶浸液中各种组分可能的来源。然后 ,用矿石静态浸出试验的数据对各种组分的反应速度进行了定量对比。

In this paper, the concentrations of different components in uranium solute are discussed by using cluster analysis method, and it can be found that many components except CO\+\{2-\}\-3 and HCO\+-\-3 have intimately positive correlation, which demonstrates their concentrations change in similar way. The chemical equations occurred in In\|situ uranium leaching are deduced according to the main components of minerals and tesify that most major components have several sources. The reaction rates between different components are then compared quantitatively by using data of a static leaching experiment.