Patent ID: 8993828
Filing Date: 2015-03-31
Classification: C01F,G21F

Abstract:
1. A method for producing a solid or semi-solid residue from a starting effluent selected from the group consisting of a solid radium-containing effluent and a radium-containing effluent containing solid substances in suspension, wherein the residue contains stabilized radium and solids or solid substances of the starting effluent comprising the following steps: mixing the starting effluent and a metal chloride selected from a group of barium chloride, strontium chloride, lead chloride and a metal chloride mixture having at least two of the barium chloride, strontium chloride or lead chloride to obtain a mixture; and then adding a sulphate ion, the sulphate ion reacting with the mixture to provide the solid or semi-solid residue containing the stabilized radium and solids or solid substances of the starting effluent.