METHOD OF URANIUM CONCENTRATES PRODUCING FROM ACIDIC SOLUTIONS Russian patent published in 2016 - IPC C22B60/02 C22B3/44 

FIELD: metallurgy.

SUBSTANCE: invention relates to hydrometallurgy and can be used for production of uranium concentrates in natural uranium and nuclear fuel recycling technology. Method of uranium concentrate producing from acidic solutions after uranium desorption from anionite involves, that acid solutions neutralization is carried out together with part of uranium concentrate sediment and/or remaining from previous operations uranium concentrate residue is deposited in reactors cascade chain. At that, blowing with air and/or inert gas is simultaneously performed, for example nitrogen, until obtaining of pH constant value. Alkaline reagents used are carbonate, and/or ammonium bicarbonate and/or ammonium carbonate salt.

EFFECT: technical result consists in improvement of uranium concentrate quality by reducing sulphate ions content and higher degree of uranium extraction from solution into concentrate, as well as reducing uranium concentrates production cost.

1 cl, 5 tbl, 3 ex