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 w...
