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1. 发明授权

US3666449A Method for the introduction of volatile additives into a melt 失效
标题翻译：将挥发性添加剂引入熔体的方法
公开(公告)号：US3666449A
公开(公告)日：1972-05-30
申请号：US3666449D
申请日：1969-01-22
申请人： FISCHER AG GEORG
发明人： ALT ANTON
IPC分类号： C21C1/10 , C21C1/08 , C21C7/02
CPC分类号： C21C1/10
摘要： INTRODUCTION OF VAPORIZABLE ADDITIVES, SUCH AS MAGNESIUM, INTO AN IRON MELT IN WHICH THE VAPORAZATION IS INITIATED BY A TILTING MOVEMENT OF A TREATMENT VESSEL. THE VAPORIZABLE MATERIAL IS CONTAINED IN A SEPARATE CONPARTMENT WHICH CAN BE EXTERNALLY CHARGED AND WHICH, IN ONE POSITION OF THE VESSEL SEGREGATES THE ADDITIVE FROM HTE MELT, BUT ON TILTING THE VESSEL, PERMITS COMMUNICATION WITH THE MELT THROUGH OPENINGS LOCATED A DIFFERENT LEVELS. THE VAPOR BUBBLES FORMED ASCEND THROUGH THE MELT WITH SUCH A SIZE AND IN SUCH A NUMBER THAT AT LEAST A PORTION OF THE BUBBLES ESCAPE FROM THE SURFACE OF THE MELT. THE VAPOR BUBBLES HAVE A GREAT SURFACE AREA TO PROVIDE, FOR EXAMPLE WITH MAGNESIUM, A YIELD OF AT LEAST 30% AND PREFERABLY MORE THAN 40% OF THE ADDITIVE IN THE MELT WHILE THE VELOCITY OF THE ASCENDING VAPOR BUBBLES IS SUCH AS TO PRODUCE A FLUSHING ACTION ON THE MELT RESULTING IN A REDUCTION OF THE REACTION PRODUCTS AND RESIDUAL UNDESIRABLE IMPURITIES IN THE MELT.
摘要翻译：将可蒸发的添加剂如镁引入铁熔体中，其中通过处理容器的倾斜运动引发蒸发。可蒸发材料包含在可以被外部装料的单独的隔室中，并且在容器的一个位置中，将添加剂从熔体中分离，但是在容器倾斜时，允许通过位于不同水平的开口与熔体连通。形成的蒸汽泡通过熔体以这样的数量上升，使得至少一部分气泡从熔体的表面逸出。蒸汽气泡具有很大的表面积，以提供例如镁，在熔体中的添加剂的产率至少为30％，优选大于40％，而上升蒸气泡的速度要产生冲洗对熔体的作用导致反应产物的减少和熔体中残留的不希望的杂质。

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