公开(公告)号：US4369060A

公开(公告)日：1983-01-18

申请号：US222512

申请日：1981-01-02

申请人： Paul Metz ,  Francois Schleimer ,  Ferdinand Goedert ,  Lucien Lorang ,  Romain Henrion ,  Jean-Claude Grosjean ,  Guy Denier ,  Claude Bauler

发明人： Paul Metz ,  Francois Schleimer ,  Ferdinand Goedert ,  Lucien Lorang ,  Romain Henrion ,  Jean-Claude Grosjean ,  Guy Denier ,  Claude Bauler

IPC分类号： C21C5/48 ,  C21C5/34 ,  C21C5/35 ,  C21C5/46 ,  C22B9/05 ,  C21C5/42

CPC分类号： C22B9/05 ,  C21C5/35

摘要： Process of refining of a metal bath in a crucible with oxygen blast at the top and crucible used.The invention consists essentially of providing in the bottom (15) of the crucible agitating gas injectors (15) located at least in a peripheral circular ring situated in immediate proximity to the refractory side wall. The injectors are preferably concentrated opposite the journals. Secondary injectors are, also preferably, provided in the bottom zone, intermediate between the ring and the center of the crucible.The invention makes it possible, in relation to the prior injection practice, to reduce the rate of dissolution of the agitating gas in the molten metal and then makes it possible to use a low-cost agitating gas, such as nitrogen, without risk of excessive nitridation of the bath.

摘要翻译： 使用顶部的氧气吹扫坩埚中的金属浴精炼过程。 本发明基本上由在至少位于紧邻耐火材料侧壁的外围圆环中的坩埚搅拌气体喷射器（15）的底部（15）提供。 注射器优选地集中在与期刊相对的位置。 也优选地，二次注射器设置在底部区域中，位于环和坩埚中心之间。 本发明可以相对于现有的喷射实践来降低搅拌气体在熔融金属中的溶解速度，从而可以使用诸如氮气的低成本搅拌气体，而不会有过度的风险 浴的氮化。