Ammonium Bicarbonate → Ethylenediaminetetraacetic Acid

Participants

Reaction Steps

passing through the ore deposit an aqueous leach solution comprising essentially from about 0.3 to 5 grams per liter of ammonium bicarbonate, sufficient ferric ammonium EDTA to provide from about 3 to 100 ppm of iron, with an EDTA:Fe ratio of at least 1.25:1, and from about 0.1 to 3 grams per liter of H2O2, the leach solution having a pH of between 7.4 and 9.5, the leach solution converting any tetravalent uranium it contacts to the hexavalent state which readily dissolves in the leach solution,

Provenance & Evidence