This paper provides an analytical review of the problems of underground processing of uranium
minerals with sulfuric acid solutions in modern uranium production. To oxidize minerals containing
tetravalent uranium, iron (III) salts, potassium permanganate, potassium and ammonium persulfates,
chlorine, hypochlorites and chlorates, sodium nitrite, nitric and nitric acids, hydrogen peroxide, air,
etc. are used, by means of which uranium passes into solution. The efficiency of using iron(III) ions
when implementing this method was determined. Preliminary studies have shown the possibility of
regenerating ferric ions by anodic oxidation of divalent iron ions by the electrochemical method
using granular electrodes.