HIGH EFFICIENT SULFURIC ACID LEACHING METHOD OF URANIUM ORE BY ADDITION FERRIC SULFATE

摘要

PURPOSE: A high efficient sulfuric acid leaching method of uranium ore by addition ferric sulfate is provided to improve a leaching yield and to reduce a leaching time of uranium by adding iron sulfate. CONSTITUTION: A high efficient sulfuric acid leaching method of uranium ore by addition ferric sulfate comprises follows. The uranium is leached by adding water, sulfuric acid, oxidizer, iron sulfate to the mineral containing uranium. PH is controlled to be within 1~2 in the leaching reaction. The oxidation-reduction reaction is controlled to 400~550mV(120). PH is controlled by the input of the sulfuric acid in the leaching reaction. The oxidation-reduction reaction is controlled by the input amount of oxidizer. The iron sulfate is added by 0.1~1 parts by weight about the mineral containing uranium of 100 parts by weight. The leaching temperature is 30~60C. The mineral containing the uranium is pulverized to be particle size of 45~200 mesh. The leaching reaction is performed for 0.5~4 hours. Mixing is mixed to in 200~500rpm.