Apparatus for the treatment of molten metal

摘要

A treatment unit is disclosed for the introduction of a reactive additive into molten metal and particularly for the introduction of a nodularizing agent into cast iron. The treatment unit is adapted to be located in, on or above a pouring ladle 14 and comprises a pouring bush 1 opening directly or indirectly into a covered additive container 2 which is provided in its base and/or peripheral walls with a plurality of holes to allow the passage therethrough of molten metal. Means are provided, for example a ladle cover 8 or a funnel 21 to accommodate the additive container, for restricting contact of the molten metal being treated with the atmosphere. A process is also disclosed for introducing a reactive additive such as a nodularizing agent into molten metal such as cast iron using the treatment unit.