National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51404141, 51874180]; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2015M572255]; natural science foundation of Hunan ProvinceNatural Science Foundation of Hunan Province [2018JJ3437]; double first class construct program of USC [2017SYL05]
机构署名：
本校为第一且通讯机构
院系归属：
环境与安全工程学院
摘要：
Preliminary extraction research was carried out to develop a suitable dilute alkali pretreatment–sulfuric acid leaching process for uranium recovery from tailings containing 80 ppm uranium. The effects of alkali concentration, liquid-to-solid ratio, stirring speed and leaching time on uranium content in the leaching residues were investigated. The results showed that the leaching efficiency of dilute alkali pretreatment–sulfuric acid leaching is superior to direct acid leaching. Only 13 ppm and 7.5 ppm of uranium remained in tailings by using...
