COLD TRAPS FOR LIQUID METAL

摘要

A cold trap for liquid metal comprises a vessel, a cylindrical duct member being arranged concentrically in the vessel. Flow of liquid metal from inlet into the vessel is downwardly along the annular interspace defined between the duct member and the inner wall of the vessel and then into the lower end of the vessel and upwardly through the duct member. The upper length of the duct member from the liquid metal inlet and of the vessel is of a thermally conducting nature, while the remaining length of the duct member towards the lower end of the vessel is of double walled construction so as to be of a thermally insulating nature.