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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.

Publication Year 1991
Title Leaching of 226Ra from components of uranium mill tailings
DOI 10.1016/0304-386X(91)90010-J
Authors E. R. Landa
Publication Type Article
Publication Subtype Journal Article
Series Title Hydrometallurgy
Index ID 70016704
Record Source USGS Publications Warehouse
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