Vacuum separator

Details Vacuum separator Vacuum separator

C - Chemistry, Metallurgy

22

B

39/4

C22B 9/00 (2006.01) C22B 5/16 (2006.01) C22B 34/12 (2006.01) C22B 34/14 (2006.01)

Patent

CA 1165111

VACUUM SEPARATOR ABSTRACT OF THE DISCLOSURE In a vacuum separator for refractory metal from magnesium metal and magnesium chloride mixed therewith, comprising: a vertically elongated substantially cylindri- cal retort having, inside, a closed space, a lower section of which is capable of accomodating such mixture to be treated as held in a container and is provided with a heat- ing means to evaporate the magnesium metal and magnesium chloride to a substantial part, and an upper section of which has a cooling means to provide, inside, a cylindrical face for condensing thereon magnesium metal and magnesium chloride which ascend as vapor, and a means for degassing the retort to an elevated level of vacuum, an improvement such that a heat shield unit is provided at an intermediate level between said upper and lower sections of the retort, said heat shield unit comprising, as a whole, opening so arranged as to block any direct sight of the surface of the retort lower section when holding the container from a substantial part of the condensation face in the upper section, thus intercepting a substantial part of primary heat radiation from the retort lower section, while allow- ing passage of ascending vapor.

401706

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