Grooved refractory part used for metallurgical casting, assembly of refractory parts and casting installation comprising such assembly

摘要

The pouring tube (4) has a contact face (14) at the upper face of a collar (7). The contact face has a pair of additional grooves which are formed symmetrically, and communicate with an injection groove through either sides of its determinate section in a contact face (11) of an inner nozzle (9). Independent claims are also included for the following: (a) Refractory assembly; (b) Steel casting installation