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Gas treatment of molten metals

  • US 5,660,614 A
  • Filed: 06/05/1995
  • Issued: 08/26/1997
  • Est. Priority Date: 02/04/1994
  • Status: Expired due to Fees
First Claim
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1. A method of treating a molten metal with a treatment gas, comprising:

  • continuously introducing the molten metal into a container having a bottom wall and opposed side walls which form a section of a trough;

    providing at least one mechanically moveable gas disperser within the metal in the container;

    introducing a gas into the metal adjacent to said gas disperser in a part of said trough forming a treatment zone such that said gas is broken into smaller bubbles by said gas disperser and is dispersed through the treatment zone;

    said trough section being such that said section exhibits a static to dynamic metal holdup of less than about 50%.

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