Inertial mixing method for mixing together molten metal streams

Details Inertial mixing method for mixing together molten metal streams Inertial mixing method for mixing together molten metal streams

1986-12-08

1988-04-05

Rosenberg, Peter D.

Alloys or metallic compositions

Aluminum base

75 63, 75 65R, 75 93R, 420590, C22C 2100

Patent

active

047357738

ABSTRACT:
A system is disclosed for efficiently mixing streams of molten metal to form a molten metal alloy while inhibiting oxidation and introduction of impurities such as hydrogen gas into the molten metal which comprises passing a first molten metal stream at a minimum velocity of at least 18 cm/sec into a mixing zone and feeding a second molten metal stream at a lower velocity into the mixing zone through a concentric feed tube around which the first molten metal stream is flowing. The first molten metal stream is maintained in turbulent flow conditions with a Reynolds number of greater than 2100. In a preferred embodiment, the minimum velocity of the first stream is raised before reaching the mixing zone by introducing a non-oxidizing gas into the stream.

REFERENCES:
patent: 2100264 (1937-11-01), Perrin
patent: 2572489 (1951-10-01), Jordan
patent: 4191563 (1980-03-01), Smartt
patent: 4556535 (1985-12-01), Bowman et al.

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