STRAIGHT BARREL TYPE VACUUM REFINING DEVICE AND METHOD FOR USE THE SAME

  • US 20150240323A1
  • Filed: 08/20/2013
  • Published: 08/27/2015
  • Est. Priority Date: 08/24/2012
  • Status: Active Grant
First Claim
Patent Images

1. A straight barrel type vacuum refining device comprising a vacuum chamber and a snorkel, during the vacuum refining the snorkel is inserted into a molten steel of a steel ladle, characterized in that, disposing a circulating tube in a circumference of said snorkel dispose, and blowing argon gas into the snorkel through the nozzles on the inner wall of the circulating tube;

  • disposing said circulating tube in different layers, and individually controlling the nozzles on the circulating tube of the same layer;

    disposing an eccentric gas permeable brick at the bottom of said steel ladle, and blowing argon gas into the steel ladle through the eccentric gas permeable brick, and driving the circulating flow of the molten steel between the steel ladle and the vacuum chamber by using different blowing flow rate combinations of steel ladle bottom blowing and each individually controlled unit of the circulating tube blowing system.

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