Vacuum-suction degassing apparatus
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United States of America Patent
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Sep 13, 1994
Issued Date -
N/A
app pub date -
Jun 8, 1993
filing date -
Jun 16, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A melt is stored in a vessel, and a lower half portion of a rod-formed porous member is immersed in the melt. The porous member is made of a porous material having pores which is permeable to gas and impermeable to melts, such as molten metal, molten slag, and molten matte. When the vessel is placed in a decompression container and the portion of the porous member which protrudes above a surface of the melt is put in vacuum or under reduced pressure, gases in the melt or gases produced by reactions between components of the porous member and the melt pass through pores of the porous member and are released to vacuum or depressurized atmosphere in the decompression container. Thus, gas-forming components are removed from the melt.
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