Method for observing inside of molten iron refining furnace...

C - Chemistry – Metallurgy – 21 – C

Patent

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C21C 5/48 (2006.01) C21C 5/46 (2006.01) F27D 21/02 (2006.01) F27B 3/28 (2006.01) F27D 21/00 (2006.01)

Patent

CA 2381584

A method for observing the inside of a molten iron refining furnace which comprises using an inert gas and an oxidizing gas individually or in combination in correspondence to the situation of the opening of the front end of a single tube or double tube tuyere which is disposed for observing in non- contact the temperature and/or composition of the molten metal in the refining furnace by detecting an electromagnetic wave emitted from the front end of the tuyere through the pipe passing through a refractory material from the wall and/or bottom of the molten iron refining furnace. The method allows a tuyere for observation to be opened regularly in correspondence to the situation of refining, which leads to regular observation of the temperature and/or composition of the molten iron inside a refining furnace.

La présente invention concerne un procédé permettant d'observer l'intérieur d'un four d'affinage de fer en fusion, qui consiste à utiliser un gaz inerte et un gaz oxydant individuellement ou en combinaison, conformément à la position de la chapelle de l'extrémité avant d'une tuyère à tuyau simple ou double. Ces gaz permettent d'observer sans contact la température et/ou la composition du métal en fusion dans le four d'affinage par la détection d'une onde électromagnétique émise à partir de l'extrémité avant de la tuyère via le tuyau passant à travers un matériau réfractaire de la paroi et/ou du fond du four d'affinage de fer en fusion. Ce procédé permet, à des fins d'observation, d'ouvrir une tuyère de façon régulière conformément au stade d'affinage, ce qui permet d'observer régulièrement la température et/ou la composition du fer en fusion à l'intérieur d'un four d'affinage.

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