公开(公告)号：US20010048707A1

公开(公告)日：2001-12-06

申请号：US09862909

申请日：2001-05-22

申请人： Voest-Alpine Industrieanlagenbau GmbH & Co.

发明人： Peter Mittag ,  Harald Berger

IPC分类号： H05B011/00

CPC分类号： C21C5/5217 ,  C21B13/12 ,  C21C5/527 ,  C21C7/0037 ,  F27B3/085 ,  F27B3/12 ,  F27B3/183 ,  F27B3/225 ,  F27D3/16 ,  F27D2021/023 ,  Y02P10/216

摘要： In a process for melting down sponge metal (11) in an electric-arc furnace (1) having at least one electrode (6), the sponge metal (11) is introduced into the electric-arc furnace (1) under formation of at least one sponge metal jet (15) which in the immediate vicinity of an electrode (6) hits the bath level (16) present in the electric-arc furnace (1), and for decarburization and/or intermixing the bath and/or charging energy oxygen is blown into the melt (7). For a CO post-combustion, in addition to the oxygen introduced for decarburization and/or intermixing the bath and/or charging energy into the melt at least one jet (14) of oxygen or one jet (14) of an oxygen-containing gas is blown into the electric-arc furnace (1) at a low rate, which jet hits the bath level (16) in the region of the point of incidence of the sponge metal jet (15), which preferably is conveyed into the electric-arc furnace (1) by gravitation alone, and/or immediately adjacent to the point of incidence of the sponge metal jet (15) and which jet in the region or vicinity of that point of incidence, on the side facing the electrode(s) (6) of the electric-arc furnace (1), is shielded by the sponge metal jet (15) relative to the electrode(s) (6) in the form of a protective shield.

摘要翻译： 在具有至少一个电极（6）的电弧炉（1）中熔化海绵金属（11）的方法中，将海绵金属（11）引入到电弧炉（1）中，形成在 在电极（6）附近的电极（6）附近的至少一个海绵金属喷嘴（15）撞击存在于电弧炉（1）中的浴液位（16），并且用于使浴和/或充电脱碳和/或混合 能量氧被吹入熔体（7）。 对于CO后燃烧，除了用于脱碳和/或将浴和/或将能量混合到熔体中的氧以外还包括氧气的至少一个喷射（14）或含氧气体的一个射流（14） 以较低的速率吹入电弧炉（1），该喷射器在海绵金属喷嘴（15）的入射点的区域中撞击浴槽（16），优选地被输送到电 - 电弧炉（1）通过重力单独和/或紧邻海绵金属射流（15）的入射点，并且在该入射点的区域或附近，在面对电极的一侧， （1）的电极（6）以相对于电极（6）的海绵状金属射流（15）以保护屏蔽的形式被屏蔽。