| 摘要 |
PURPOSE:To make it possible to easily take out precipitated metallic arsenic, by taking off connecting parts and covers after cooling, upon completion of an operation, and then by drawing out internal tubes for precipitation so as to take off two-pieces-divided-type internal tubes. CONSTITUTION:A metallic arsenic-sublimating equipment is constituted of a metallic arsenic sublimation part 2, precipitation parts 3, 4 connected to the both sides of the part 2, and heating furnaces 8, 9, 10 severally heating the sublimation part 2 and the precipitation parts 3, 4. An inert gas-introducing hole 15 is provided to one precipitation part 3 and also a gas exhaust port 22 is provided to the other precipitation part 4, and annular partition plates 5, 7 are provided to the boundaries between the sublimation part 2 and the precipitation parts 3, 4, respectively. The internal tubes 17, 21 for precipitation having an outside diameter capable of taking in and out without difficulty, split in two in the axial direction, and divided into plural pieces in the longitudinal direction are put into the precipitation tubes 3, 4 in contact with the partition plates 5, 7.
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