Method and apparatus for degassing molten metal utilizing rh...

Details Method and apparatus for degassing molten metal utilizing rh... Method and apparatus for degassing molten metal utilizing rh...

C - Chemistry, Metallurgy

21

C

39/110, 53/360

C21C 7/10 (2006.01) C21C 7/072 (2006.01) C22B 9/04 (2006.01) C22B 9/05 (2006.01) F27D 3/16 (2006.01)

Patent

CA 1299373

ABSTRACT OF THE DISCLOSURE A method and apparatus for vacuum degassing performs blow of gas into molten metal so as to form substantially uniform distribution of bubble over the path area defined by an induction pipe. In order to achieve this, discharge nozzles are separated into at least two groups. The gas pressure to be discharged through the discharge nozzles in different groups is controlled independently of the other so that gas blown through first group of nozzle forms bubble at around the central portion of the induction pipe. The pressure of the gas blown through the other second group of nozzle is adjusted for forming the bubble in the vicinity of the periphery of the induction pipe.

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