CO2+O2地浸采铀矿层渗透性影响因素

Influence Factors on Permeability of Ore Layer in Uranium CO2+O2 In-situ Leaching

在CO2+O2地浸浸出过程中,渗透性是决定浸出效率的重要因素,提高渗透性对铀的浸出有很大作用。介绍了浸出过程中导致矿层渗透性降低的因素及增渗方法的研究进展。目前该工艺中关于如何抑制化学沉淀的问题已经得到了一定的解决,洗井工艺也取得了进步,但在渗透性的机理及微观尺度变化上的研究还不够全面,在增渗方法的研究上有些也还处于试验探索阶段,并未在实际生产中得到有效应用。

Permeability is an important factor determining leaching efficiency during process of CO2+O2 in-situ leaching.It is quite significant to raise permeability in uranium leaching.The factors leading to drop of permeability of ore layer during leaching and research progress of infiltration enhancement methods are introduced.Although problem of how to inhibit chemical precipitation is solved to a certain extent and there is progress in well washing technology,research on mechanism of permeability and micro-scale changes is yet comprehensive enough.Research of improving permeability is still at experimental exploration stage,which has not been effectively applied in actual production.