铀与有机质的联系

ELATIONSHIP BETWEEN URANIUM AND ORGANIC MATTER

本文研究了有机质中铀存在形式、铀浸出加工性能与有机质变质系列主要成员——腐植酸、镜粘质、丝炭、炭青质、石墨之间的关系。天然有机质中铀的地球化学富集始于腐植酸,但随着各种地质作用有机质发生改变,并导致铀与有机质化学结构的分离。有机质良好的吸附作用和还原作用使铀与各演化阶段有机质保持着紧密的空间联系。因而铀的浸出加工性能受到有机质成分、物化性质或有机质演化阶段的制约,并要通过不同的途径加以改善。

The occurrence form of uranium in the organic matter, its leaching characteristics and its relations to the various main members of evolution series of the organic matter were studied. The geochemical concentration of uranium in the natual organic matter started from the humic acid, but the organic matter changed with the various geological effects, which resulted in the separation of the chemical structures of uranium and organic matter. The close space relation was kept between uranium and the organic matter of various evolution stages due to the good adsorption and reduction of organic matter. Thus, the leaching characteristics of uranium was restricted by the components of organic matter and its physico-chemical properties or its evolution stages, and the processing performances should be improved in various ways.