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Title:
METHOD AND APPARATUS FOR SUBLIMATION REFINING
Document Type and Number:
Japanese Patent JP2000093701
Kind Code:
A
Abstract:

To provide a method and an apparatus for refining efficiently by sublimation a solid material which lacks in thermal stability.

In the sublimation refining method, a solid material capable of being refined by sublimation is charged into a sublimation part A of a sublimation refining apparatus having a sublimation part A and capture parts B, C which comprise a cylindrical metallic material, sublimated by heating the cylindrical metallic material of the sublimation part A by electromagnetic induction heating, introduced into the capture part B having a zone of which a temperature is adjusted by heating the cylindrical metallic material of the capture part by electromagnetic induction heating, and a target sublimable material is captured. Further in the sublimation refining apparatus, one layer of the cylindrical metallic materials 2 of the sublimation part A is of a magnetic metallic material, an induction coil 3 to be heated by an electromagnetic induction system is fitted to an outer periphery, and the capture parts B, C having a plurality of zones of different temperatures are provided on a downstream side of the sublimation part. In one zone, one layer of the cylindrical metallic material is of the magnetic metallic material, an induction coil 8 to be heated by an electromagnetic induction system is fitted to an outer periphery, and a temperature inclination wherein a temperature drops almost in a staircase state toward the downstream side is provided between the sublimation part A and the capture parts B. C.


Inventors:
Soeda, Mahito
Hotta, Shuhei
Shiroshita, Mitsuru
Application Number:
JP1998000272147
Publication Date:
April 04, 2000
Filing Date:
September 25, 1998
Export Citation:
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Assignee:
NIPPON STEEL CHEM CO LTD
OSAKA YUKA KOGYO KK
International Classes:
C07D215/30; B01D7/00; C07B63/00; C07C46/10; C07C50/18; (IPC1-7): B01D7/00; C07B63/00; C07C46/10; C07C50/18; C07D215/30
Attorney, Agent or Firm:
成瀬 勝夫 (外2名)