Title:
金属の精製方法
Document Type and Number:
Japanese Patent JP4657465
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the refining efficiency of a metal. SOLUTION: A molten metal 2 is solidified from one direction by arranging a conductor coil 4 on the outer peripheral part of a cylindrical vessel 1 housing the molten metal 2 and cooling the lower end part of the vessel while passing AC current through the conductor coil 4. The molten metal 2 is stirred with electromagnetic induction by passing AC current through the conductor coil 4 at the time of progressing the re-crystallization to suppress the increasing rate of impurity concentration which is generated on solid/liquid boundary surface, and as a result, the solidifying rate is increased and high purity metal is manufactured with high efficiency.
Inventors:
Seiji Kobayashi
Kazutomi Yamamoto
Kazutomi Yamamoto
Application Number:
JP2001034229A
Publication Date:
March 23, 2011
Filing Date:
February 09, 2001
Export Citation:
Assignee:
Furukawa Metal Co., Ltd.
International Classes:
C22B9/02; H05B6/24; C22B9/16; F27B14/14; F27D9/00; F27D11/06; H05B6/36
Domestic Patent References:
| JP57060040A | ||||
| JP57160567A | ||||
| JP2050927A |
Foreign References:
| WO2000026422A1 |
Attorney, Agent or Firm:
Tetsuya Mori
Yoshiaki Naito
Hide Tanaka Tetsu
Tadayuki Miyazaki
Yoshiaki Naito
Hide Tanaka Tetsu
Tadayuki Miyazaki