The mechanism of secondary countercurrent leaching of uranium-containing alkali slag

被引：1
|
作者：
Guo, Haotong [1 ]
Wang, Qingliang [1 ,2 ]
Lei, Zhiwu [1 ,2 ]
Wan, Qiang [3 ]
Zhu, Fangping [3 ]
Hu, Fang [1 ,2 ]
Hu, Eming [1 ,2 ]
机构：
[1] Univ South China, Sch Resources Environm & Safety Engn, Hengyang, Peoples R China
[2] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Min, Hengyang, Peoples R China
[3] China Natl Nucl Corp, Jianzhong Nucl Fuel Co Ltd, Yibin, Peoples R China
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2023年 / 332卷 / 09期
关键词：
Uranium-containing alkali waste slag; Uranium; Secondary countercurrent leaching; Leaching rate; Characterization analysis; ACID; RECOVERY; EXTRACTION; WASTE; ORE;
D O I：
10.1007/s10967-023-09049-2
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
According to the difficult problem of disposal and recovery of uranium-containing waste slag, the leaching experiment was conducted by using the secondary countercurrent leaching process. The results showed that under conditions particle size of 1 mm, reaction time of 120 min, leaching temperature of 90 & DEG;C, nitric acid concentration of 429 g/L, liquid-solid ratio of 2.2:1, hydrogen peroxide dosage of 30 mL/L in primary leaching, then the temperature was switched to 130 & DEG;C during the secondary leaching. The leaching rate of uranium in alkali slag was 99.73% and the content of the uranium in insoluble slag was 0.788%.
引用
收藏
页码：3827 / 3836
页数：10
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