Uranium ore processing: Kinetics of the growth and dissolution of a potential host solid from a model surface |
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| Authors: | C. R. Paige W. A. Kornicker O. E. Hileman Jr. W. J. Snodgrass |
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| Affiliation: | (1) Department of Chemistry, McMaster University, L8S 4M1 Hamilton, Ontario, (Canada);(2) Department of Civil Engineering, McMaster University, L8S 4M1 Hamilton, Ontario, (Canada) |
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| Abstract: | As part of an investigation concerning the fate of226Ra during uranium ore milling and long-term tailings storage, we have investigated the growth of potential host solids-barium sulfate and lead sulfate-on mica, a model surface. The kinetics of dissolution of barium sulfate-and of a barium sulfate solid containing228Ra as a trace component into 10–3M sulfuric acid were subsequently investigated using a flow-cell and radiotracer techniques. It was found that ther dissolution of both the barium sulfate host and the228Ra trace component was congruent. The dissolution reaction appears to be surface controlled. |
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