Method of extraction of natural uranium concentrate from sulfuric acid solutions of in-situ leaching and isolation for nitrate-sulfuric acid desorption

摘要

1. A process for extracting natural uranium concentrate from sulfuric acid solutions ISL comprising nitrate-sulfuric acid adsorbent desorption with operations in the processing sequence: washing the anion of mineral slurries, anion additional saturation of uranium from marketable regenerate desorption natural uranium concentrate with the anion exchanger sulfuric acid solutions of ammonium nitrate, the denitration anion with conversion to its sulfate form, washing the regenerated anion and precipitating natural uranium concentrate with image vaniem mother liquor from the precipitation and formation of the unbalance of the solution: the solution from step wash anion from an acid and a filtrate from the filter press, characterized in that the resultant unbalance solution is returned into the process and combined with the mother liquor from the precipitation of natural uranium concentrate and then output through the above operation, together with additional saturation anion trademark he regenerates the anion exchanger with a regeneration step to step sorbtsii.2. Branch nitrate-sulfuric acid stripping, preferably with sulfuric acid underground concentrate leaching natural uranium arranged in a process sequence of the desorption column, comprising a desorption column additional saturation of the ion exchanger from the commodity regenerate and related communications lines with providing counterflow movement of ion exchanger and desorption solution and trubootvody mother liquor from deposition of natural uranium concentrate and unbalance solution: a step of washing solution and acid from the filtrate and a filter press, wherein