RU2018134912A

RU2018134912A - URANIUM EXTRACTION

Info

Publication number: RU2018134912A
Application number: RU2018134912A
Authority: RU
Inventors: Яко БЕСТЕР; Софи КОРБЕ; Стефан ДЕЛАМЕЙЁР; МОЛИНА Вероника ГАРСИА; Эмманюэль Заганьяри
Original assignee: Дау Глоубл Текнолоджиз, Ллк
Priority date: 2016-03-18
Filing date: 2017-03-15
Publication date: 2020-04-03
Also published as: WO2017209828A2; RU2018134912A3; AU2017274261A1; US20200332394A1; ZA201806406B; RU2735528C2; CA3017957A1; CA3017957C; WO2017209828A3

Claims

1. The method of extraction of uranium, including

(a) bringing the solution (I) into contact with the resin (I) to obtain a mixture consisting of solution (II) and resin (II), wherein said solution (I) is an aqueous solution containing from 30 to 200 g / l of sulfuric acid and containing from 1 g / l to 50 g / l of uranium, wherein said resin (I) is a strongly acidic cation exchange resin, and

(b) separating the solution (II) from the resin (II).

2. The method according to p. 1, characterized in that the solution (I) was obtained by a method comprising contacting the uranium ore with sulfuric acid.

3. The method according to p. 1, further comprising

(cA) bringing the solution (III) into contact with the resin (II) to obtain a mixture consisting of solution (IV) and resin (III), wherein said solution (III) is an aqueous solution containing 10% or more HCl in mass

(dA) separating the resin (IV) from the resin (III),

(eA) bringing the solution (IV) into contact with the resin (IV) to obtain a mixture consisting of resin (V) and solution (V), wherein said resin (IV) is a strongly basic anion exchange resin or a weakly basic anion exchange resin, and

(fA) separating the resin (V) from the solution (V).

4. The method according to p. 3, further comprising

(gA) bringing solution (VI) into contact with resin (V) to obtain a mixture of solution (VII) and resin (VI), wherein said solution (VI) contains 95% or more water by weight based on the weight of the solution (VI) ), and

(hA) separating the resin (VI) from the solution (VII).

5. The method according to p. 1, further comprising

(cB) bringing the solution (X) into contact with the resin (II) to obtain a mixture of the solution (XI) and resin (XI), wherein said solution (X) is an aqueous solution containing dissolved Na ₂ SO ₄ or dissolved (NH ₄ ) ₂ SO ₄ , and

(dB) the separation of the resin (XI) from the solution (XI).

6. The method according to p. 5, further comprising

(dB) bringing the solution (XII) into contact with the resin (XI) to obtain a mixture of the solution (XIII) and the resin (XII), wherein said solution (XII) is an aqueous solution containing dissolved H ₂ SO ₄ , and

(eB) separating the resin (XII) from the solution (XIII).