郭钟群,金解放,赵 奎,王晓军,秦艳华.离子型稀土溶浸液毛细上升规律及影响因素研究[J].有色金属工程,2018,8(2):78-82.
离子型稀土溶浸液毛细上升规律及影响因素研究
The study on effective factors of capillary rise of ion-absorbed rare earth and its laws
投稿时间:2016-10-13  修订日期:2016-11-29
DOI:10.3969/j.issn.2095-1744.2018.02.016
中文关键词:  关 键 词:离子型稀土  毛细上升  溶浸液  离子交换  粒径大小
英文关键词:ion-adsorption rare earth  capillary rise  leaching solution  ion exchange  grain size
基金项目:国家自然科学基金资助项目:浸矿液饱和浸注过程离子型稀土矿体液化机制及滑移特性研究(No. 51364011);江西省自然科学基金资助项目:离子型稀土原地浸开采交换液入渗机理及浸润模型研究(No. 20151BAB206025)。
              
作者单位
郭钟群 江西理工大学 建筑与测绘工程学院
金解放 江西理工大学 建筑与测绘工程学院
赵 奎 江西理工大学 建筑与测绘工程学院
王晓军 江西理工大学 建筑与测绘工程学院
秦艳华 江西理工大学建筑与测绘工程学院
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中文摘要:
      离子型稀土是我国特有的保护性和战略型矿产资源,原地浸开采过程中溶浸液的毛细作用势必会影响稀土离子的浸出,导致资源浪费和环境污染。基于自制毛细试验装置的基础上,以寻乌某矿的离子型稀土为试验对象,采用3种不同浓度溶浸液,对4组不同粒径的稀土进行毛细上升试验。研究表明:论是不同粒径还是不同溶浸液,毛细上升高度随着时间增长的变化趋势一致,先快速上升,然后缓慢上升,再趋于稳定;当土样粒径不同时,硫酸铵溶液浓度对毛细上升的敏感性各不相同,粒径越大,影响越小;溶质势对毛细现象有促进作用,浓度越大,作用越明显;预测了最大毛细上升高度,其值随土柱最大粒径的增大而减小,二者呈幂函数关系,毛细渗透系数随土样最大粒径的增大而增大,二者呈指数关系,最大毛细上升高度与毛细渗透系数呈负相关性。
英文摘要:
      Ion-adsorption rare earth is protective and strategic mineral resources of China. The capillarity in the process of in-situ leaching mining will affect the leaching result of rare earth ions, and lead to waste of resources and environmental pollution. Based on the self-made capillary test device, four kinds of different particle size of Xunwu ion-adsorption rare earth has been test in three different concentration solution. The results indicate that the different kind of test has the same trend of capillary rise as time growth, which is the height of capillary rise first rises rapidly, and then increases slowly, and then tends to be stable. When the soil particle size is different, the sensitivity of the concentration of ammonium sulfate solution to the capillary rise is different, the bigger the particle size is, the smaller the influence is. The solute potential has a promoting effect on the capillary phenomenon, the greater the concentration, the more obvious effect. This paper predicts the maximum capillary rise height and the value decreases with the increase of soil particle size, which presents also a power function. The capillary permeability coefficient increases with the increase of soil particle size, which presents also a exponential relationship. The maximum capillary rise height and the capillary permeability coefficient is correlated negatively.
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