Method for improving the radionuclide retention properties of solidified radioactive wastes

US4594186A · kind A · utility

Assignee

• Kernforschungszentrum Karlsruhe GmbH · DE

Inventors

• Siegmar Kunze · Gernsbach, DE
• Gunter Losch · Leimersheim, DE
• Theodor Dippel · Eggenstein, DE
• Dietrich Laske · Zürich, CH
• Walter Hubner · Baden, CH

Key dates

• Filing date: Apr 21, 1983
• Grant date: Jun 10, 1986
• Expiry date: Apr 21, 2003

Classification

• Technology area (CPC G): Physics
• CPC primary: G21F9/301
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Process for solidifying radioactive waste wherein the waste is in solid or aqueous, flowable or liquid form, by mixing the waste with a binder to form a mixture and then leaving the mixture to harden. A mixture of the waste, the binder and an additive which is natural volcanic rock detritus, is formed. The detritus has a total content of CaO+MgO up to a maximum of 6.5 percent by weight and less than 50 percent by weight of residue insoluble in mineral acid. The detritus additive is mixed in an amount between 1 percent by weight and 60 percent by weight of the binder employed.