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Leaching of 226Ra from components of uranium mill tailings

January 1, 1991

A sequential extraction procedure was used to characterize the geochemical forms of 226Ra retained by mixtures of quartz sand and a variety of fine-grained rock and mineral species. These mixtures had previously been exposed to the sulfuric acid milling liquor of a simulated acid-leach uranium milling circuit. For most test cases, the major fraction of the 226Ra was extracted with 1 mol/1 NH4Cl and was deemed to be exchangeable. However, 226Ra retained by the barite-containing mixture was resistant to both 1 mol/1 NH4Cl and 1 mol/HCHCl extraction. ?? 1991.

Publication Year 1991
Title Leaching of 226Ra from components of uranium mill tailings
Authors E. R. Landa
Publication Type Article
Publication Subtype Journal Article
Series Title Hydrometallurgy
Index ID 70016704
Record Source USGS Publications Warehouse