Vacuum-suction degassing apparatus

Details Vacuum-suction degassing apparatus Vacuum-suction degassing apparatus

C - Chemistry, Metallurgy

22

B

C22B 9/04 (2006.01) C21C 7/10 (2006.01) C22B 7/04 (2006.01)

Patent

CA 2044725

ABSTRACT OF THE DISCLOSURE 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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