| 摘要 |
PURPOSE:To heat immersion nozzles efficiently without using any special combustion apparatus and fuel by introducing the waste gases of burners for heating of a tundish into heat insulating vessels for the immersion nozzles. CONSTITUTION:Covers 7, 8 are provided in the opening parts of a tundish 1 to close said parts and heat insulating vessels 9 consisting of inside vessels 10 and outside vessels 12 and having discharge ports 13 are mounted to immersion nozzles 3 by sandwiching mounting flanges 11 by means of flanges 15A and sandwiching members 15B. Further, injectors 14 are provided to the ports 13. Compressed air is introduced into the injectors and is released toward the outside, by which the waste gases of combustion of main burners 2 for heating the tundish 1 are sucked from the tundish 1, are introduced to the nozzles 3 and are discharged through the ports 13 via the vessels 9, during which time the nozzles 3 are heated easily up to necessary temps. in a short time. |
