A METHOD FOR PREPARING METALLIC FUEL SLUGS OF LOW LOSS AND HIGH YIELD, AND METALLIC FUEL SLUGS PREPARED BY THE METHOD

摘要

PURPOSE: A method for manufacturing a metal fuel slug with a low loss and high yield and the metal fuel slug manufactured by the same are provided to minimize a fuel loss by preventing fuel materials from permeating through a crucible. CONSTITUTION: A dense ceramic layer is formed by coating an inner surface of a melting crucible with ceramic materials. The thickness of the ceramic coating layer is 3 to 300 um. Metal fuel materials are inputted to the melting crucible coated with the ceramic layer. The metal fuel materials are melted by heating the melting crucible with the metal fuel materials under an inert gas atmosphere. The melt metal fuel materials are supplied to a fuel slug mold. [Reference numerals] (AA) U, Pu, Zr materials; (BB) Slurry coating; (CC) Vacuum pumping; (DD) Heating, melting; (EE) Inert gas pressurization; (FF) Injection casting; (GG) Metal fuel core; (HH) Conventional injection casting fuel core manufacturing process; (II) U, TRU, Zr materials; (JJ) Dense ceramic layer coating; (KK) Vacuum purging; (LL) Inert gas pressurization; (MM) Heating, melting; (NN) Gravity casting; (OO) Metal fuel core; (PP) Fuel core manufacturing process according to this invention