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 sizeof 1mm, reaction time of 120min, leaching temperature of 90°C, nitric acid concentration of 429g/L, liquid–solid ratio of 2.2:1, hydrogen peroxide dosage of 30mL/L in primary leaching, then the temperature was switched to 130°C during the secondary leaching. The leaching rate of uranium in alkali slag wa...
