straight barrel type vacuum refining apparatus and methods of use thereof

摘要

Include a vacuum chamber, and a dip tube that is inserted into the molten steel in the ladle at the time of vacuum refining A straight barrel type vacuum refining apparatus installation, the circumferentially of the dip tube is installed reflux tube, an argon gas is blown into the dip tube through a nozzle on the inner wall of the reflux condenser, the reflux condenser is in a plurality of layers is, nozzles 2-6 in reflux tubes of the same layer are individually controlled as a set, eccentric purging plug in the bottom of the ladle is installed, the argon gas is blown into the ladle through an eccentric purging plugs, intake pan bottom by blowing a different blowing flow rate combinations for by each of the individual control units of the reflux condenser spray system, a straight barrel type vacuum refining apparatus which is characterized by driving the circulating flow of the molten steel between the ladle and the vacuum chamber is there. How to use the straight body type vacuum refining apparatus, in a vacuum refining process, employs a complex spraying mode of the eccentric purging plug of preparative pan bottom portion and the dip tube ring flow tube, in the period of decarburization, the bottom blowing O to the same side is blown strength ring flow tube, is ring flow tube of the other side blows weak, in the period of the desulfurization, bottom blowing is a blow strength, ring flow tube around the dip tube is intended to ensure that is blowing all weak.BACKGROUND 1