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绿泥石是铀矿石中常见矿物之一,主要见于中基性岩性的煌斑岩、辉绿岩中,其绿泥石含量可高达20%以上。在火山岩地区的某些花岗斑岩矿石中,绿泥石富集并形成沥青铀矿-绿泥石矿化。在沉积型铀矿中绿泥石亦分布甚广,但多呈细分散状。在铀矿石酸法浸出时,常见的铁镁绿泥石要消耗较多的酸和氧化剂,并使浸出液中杂质含量增多,给后继工艺过程带来困难。因此,绿泥石在铀矿石中的含量及其在浸出过程中的行为,越来越被人们重视,并作为矿石特性的主要标志之一。
Chlorite is one of the common minerals in uranium ore. It is mainly found in the lamprophyre and diabase of medium-basic lithology. Its chlorite content can be as high as 20% or more. In some granite porphyry ores in the volcanic area, chlorite is enriched and forms an asphaltic uraninite-chlorite mineralization. Chlorites are also widely distributed in sedimentary uranium deposits, but most are finely dispersed. In acid leaching of uranium ores, the common magnesia chlorite consumes more acids and oxidants and increases the amount of impurities in the leachate, which poses difficulties for subsequent processes. Therefore, chlorite in uranium ore content and its behavior in the leaching process, more and more attention, and as one of the main characteristics of ore.