Hydrolytic stripping of single and mixed metal-versatic solutions.

Hydrolytic stripping is the process whereby metal ions in a loaded solvent extractant are directly precipitated as oxides or hydroxides by hydrolysis with water, typically at 130° to 200 °C. Hydrolytic stripping tests were carried out in sealed tubes at 200 °C on Versatic 10 solutions of Mg, Ca, Sr, Al, Ti, Cr, Mn, Fe, Co, Ni, Cu, Zn, and Cd, singly and in mixtures. Single solutions of Fe, Ni, Cu, Mg, and Mn precipitated αFeO, Ni(OH), CuO + CuO, Mg(OH), and γMnO, respectively, during testing. Several mixtures of iron with other metals precipitated magnetic spinel ferrites, MFeO. No other combinations of metals formed crystallographically distinctive mixed oxides. [ABSTRACT FROM AUTHOR]