| 摘要 |
PURPOSE:To prevent the austenitic stainless steel of a vessel which reduces chloride of Zr and Ti with metallic Mg as a reducing agent from being attacked by the molten Mg by stamping a carbon material onto the inside surface of the vessel. CONSTITUTION:A reaction chamber 10 contg. the ingot of metallic Mg as a reducing agent is joined to a condensing chamber 40 by an intermediate connecting part 30. The chamber 10 which is formed of an austenitic stainless steel plate for the purpose of reducing weight and is stamped with a carbon material 10a on the inside surface thereof via magnesia cement is used. The chamber 10 is put in a heating furnace 90 and after the inside of the furnace is evacuated to the reduced pressure through an evacuating pipe 41, a melt 80 of a sealing material is put through a conduit 39 into a pan 36 and is solidified. The Mg is melted in the furnace 90 and the chloride of Zr or Ti is put through a conduit 61 into the chamber 10 where the chloride is reduced to a metallic form by the Mg. The byproduced MgCl2 is discharged through a discharge pipe 13. The sealing material 80 is melted by heating and thereafter the chamber 10 is heated to evaporate and separate the sticking MgCl2 and unreacted Mg from the sponge-like Zr, etc. The MgCl2 and unreacted Mg are recovered in the chamber 40.
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