STABILISATION OF RADIONUCLIDES INTO WASTES

摘要

The specification discloses a process far stabilising radionuclides extracte d during the upgrading of minerals. The process comprises forming a composition of a radionuclide and a component and roasti ng the composition so that the component forms a crystalline phase having a structure that binds the radionuclides. Suitabl e components include a compound of a lanthanide and/or phosphorus and zirconia. Zirconia in its cubic form is useful in stabilising uranium and thorium.