Refining device and method for controlling nitrogen content of molten steel
A technology of nitrogen and content in molten steel, applied in the field of continuous steel, can solve problems such as difficult application, major hidden dangers buried in production safety, splashing of molten steel and steel slag, etc., and achieve the effect of easy operation, small investment, and improved cleanliness
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[0028] Depend on figure 1 It can be seen that the refining device for controlling the nitrogen content of molten steel in the present invention is mainly composed of a lifting hydraulic cylinder 1 , an immersion tube 2 , a furnace cover 3 , an electrode 5 , a feed bin 6 and a ladle 9 . The lifting hydraulic cylinder 1 is fixed on the ground, and the front end of the piston rod of the lifting hydraulic cylinder 1 is fixed horizontally with a connecting rod. There is a silo 6 above the feed inlet, and the immersion tube 2 made of refractory material is fixed on the steel structure under the furnace cover 3. The diameter of the furnace cover 3 is 1 / 3 to 1 / 2 of the diameter of the ladle 9, so the furnace cover 3 Lift and hang on the top of the ladle 9 by the lifting hydraulic cylinder 1 and the connecting rod.
[0029] The concrete steps of the present invention's control molten steel nitrogen content method are:
[0030] 1. Preheat the immersion tube 2 under the furnace cover 3...
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