The integrated unit nozzle / upper plate capable of being divided into an upper nozzle and an upper plate and detached from a vessel of metal

摘要

The integrated unit nozzle / upper plate capable of being divided into an upper nozzle and an upper plate and detached from a pot of metal plate is described and a nozzle above where the nozzle integrated upper and upper plate are integrated.The thickness of the formed between the nozzle top and the upper plate can be maintained at an appropriate level and the upper nozzle and the upper plate can be easily separated after use.In a part of the lower end of the upper nozzle (1), a metal coating (4) is folded inside along a refractory substance alumina - carbon of the upper nozzle (1) to form a section of metal, and the length of the part where the section of the metal coating metu00e1l The ICO (4) is formed is 15 mm.Mortar (5) of a thickness of about 0.5 is sandwiched between the metallic coating and refractory substance. A recess (11) in the lower section of the upper nozzle (1) is fitted into a projection (21) of the upper plate (2) with the mortar (5) between them, and both surfaces of the metal (4) are in contact with each other. The positions in the volume of the part of the contact are fixed by welding.