English term
yellow cake
The solvents are removed by evaporating in a vacuum and ammonium diuranate, (NH4)2U2O7, is precipitated by adding ammonia to neutralize the solution. The diuranate is then heated to yield a purified, solid U3O8, known as yellow cake. (Kennesaw State University )
On site, close to the mines, the uranium is concentrated and transformed into a yellow powder, commonly called yellow cake, which contains 75% of uranium. It is in this form that the uranium is marketed. (planete-energies.com)
The first stage of this process is to dissolve the yellow cake in nitric acid; solvent extraction using tributyl phosphate in a hydrocarbon solution extracts the uranium from the various impurities and then the extract is washed with dilute nitric acid to produce uranyl nitrate in a very pure form. (landmarkminerals.com)
Dec 3, 2009 12:37: changed "Kudoz queue" from "In queue" to "Public"
Dec 3, 2009 12:59: changed "Stage" from "Preparation" to "Submission"
Dec 6, 2009 14:02: changed "Stage" from "Submission" to "Selection"