The invention discloses a method for recycling
uranium from
uranium extraction
tailings, which comprises the following steps: crashing the
tailings until the grain
diameter is less than 2 mm, adding
nitric acid to mix to enable the pH value of the ore pulp to reach 0.6-0.9, adding the
nitric acid and water to control the volumes of the
nitric acid and water to be 1.5-2 times of the
mass of the
tailings, heating to 65-70 DEG C, stirring and soaking for 1-1.5 hours, or after stirring and mixing uniformly at the normal temperature, soaking for 30 days, separating liquid and
solid, washing the soak
slag by the water until the pH value of the soaked
slag is close to a neutral value (pH=5-7); adding bone glue into the nitric acid lixivium, placing and aging for 5-7 days to make supersaturated salt materials in the lixivium separate out, adjusting the pH value of the lixivium to 1.75 by using caustic soda, and then carrying out
ion exchange absorption on the
uranium using a 717 type anion exchange resin, eluting uranium ions by using 0.2 mol / L of nitric acid to 0.4 mol / L of
ammonium nitrate solution as an eluent; and adjusting the pH value of the eluent to 7-8 to neutralize and precipitate the uranium to obtain
uranium ore concentrates containing 65-75% of uranium. By adopting the method, the recycling rate of the uranium can reach over 90%.