江西龙南乡标稀土矿石干筛法和水洗筛分法颗粒粒度分析

发布时间：2018-05-07 20:34

  本文选题：离子型稀土矿石 + 土壤颗粒粒度分析　； 参考：《中国稀土学报》2016年05期

【摘要】：颗粒粒度分布是土壤最重要的物理性质之一,对土壤水分运动和溶质迁移,以及水土流失有重要影响,同样对离子型稀土矿石的渗透性能和水力学特性有着重要影响。通过江西龙南乡标稀土矿石干筛法和水洗筛分法颗粒粒度分析结果比较研究发现,干筛法粒度分析结果反映的是团粒的颗粒粒度分布特征,而水洗筛分法粒度分析结果可基本反映单颗粒粒度分布特征。因此,在研究离子型稀土矿石或原地浸矿边坡土体颗粒粒度分布时,应考虑不同水动力条件下团聚体的稳定性,合理选择粒度分析方法。
[Abstract]:Particle size distribution is one of the most important physical properties of soil. It has an important influence on soil water movement, solute migration and soil erosion, as well as on the permeability and hydraulic properties of ionic rare earth ores. By comparing the results of particle size analysis between dry sieving method and washing screening method, it is found that the results of dry sieving method reflect the particle size distribution characteristics of pellets. The results of particle size analysis by washing and screening method can basically reflect the characteristics of particle size distribution of single particle. Therefore, in the study of particle size distribution of ionic rare earth ore or in situ leaching slope, the stability of aggregates under different hydrodynamic conditions should be considered and the particle size analysis method should be reasonably selected.
【作者单位】： 江西理工大学资源与环境工程学院江西省稀土资源高效利用重点实验室;江西应用技术职业学院;
【基金】：国家自然科学基金项目(41063001) 国家级大学生创新创业训练项目(201510407001)资助
【分类号】：S152
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本文编号：1858374