腐植酸对铀矿石加工过程的影响  

THE EFFECT OF HUMIC ACID ON PROCESSING URANIUM ORES

作　　者：夏德长[1] 

机构地区：[1]核工业北京化工冶金研究院,北京101149

出　　处：《铀矿冶》2000年第4期266-272,共7页Uranium Mining and Metallurgy

摘　　要：阐述了腐植酸的某些特征。讨论了铀矿石中的腐植酸对水冶加工的影响 :降低酸法堆浸的渗滤速度 ;使胺类萃取剂萃取容量下降 ,相分离困难 ,萃取、反萃取过程乳化 ,有机相损耗加大 ;树脂吸附容量下降 ;沉淀黄饼时碱耗增大 ,铀沉淀率下降。The effect of humic acid contained in uranium ores on processing uranium ores is presented. Some characters of humic acid are described. Some harms, such as lowering the percolation rate in heap leaching with sulphuric acid, decreasing the extraction capacity of amine extractants, decreasing the adsorption capacity of resins, raising difficulties in phases separation, promoting emulsification in extraction and stripping, raising cost of organic phase, increasing NaOH consumption and reducing precipitation efficiency of uranium, are explained. The methods of removing humic acid are given.

关 键 词：腐植酸 铀矿石加工 胺类萃取剂 相分离 有机相 酸法堆浸 

分 类 号：TL212[核科学技术—核燃料循环与材料]