Title:
The manufacturing method of high purity magnesium, and high purity magnesium
Document Type and Number:
Japanese Patent JP5992244
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To stably provide a highly purified magnesium having certain enhanced qualities and effective for manufacturing semiconductor elements, etc.SOLUTION: A raw magnesium ingredient having, excluding gas components, a purity of 4 N or below is subjected to a first sublimating purification round of being charged into the melting pot of a sublimating vessel and then heated and sublimated at 500°C to 650°C so as to induce the adhesion (deposition) thereof to the inner side wall of the sublimating vessel and, following the recovery of the magnesium sublimated and purified in this first round, to a second sublimating purification round of being charged, once again, into the melting pot of the sublimating vessel and then heated at a temperature equal to or lower than the melting point (650°C) so as to likewise induce the adhesion (deposition) thereof to the inner side wall of the sublimating vessel, and a magnesium having, excluding gas components, a purity of 5 N or above is then recovered.
More Like This:
Inventors:
Masahiro Takahata
Application Number:
JP2012171835A
Publication Date:
September 14, 2016
Filing Date:
August 02, 2012
Export Citation:
Assignee:
JX Nippon Mining & Metals Co., Ltd.
International Classes:
C22B26/22; C22B9/02; C22B9/22; C22C23/00
Domestic Patent References:
| JP10158753A |
Foreign References:
| WO2011062002A1 |
Attorney, Agent or Firm:
Isamu Ogoshi
Ikki Kogoshi
Ikki Kogoshi
Previous Patent: The machine tool of the automatic loading type which has two perpendicular structure spindles
Next Patent: COMPOSITE BOOSTER
Next Patent: COMPOSITE BOOSTER