Title:
METHOD FOR REFINING ALUMINUM AND USE THEREOF
Document Type and Number:
Japanese Patent JP3695287
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a production method of a high purity aluminum having industrial profitability and sufficiently reducing a quantity of eutectic impurity, such as Si, Fe, etc., and to provide the use of refined aluminum obtained with this method.
SOLUTION: In a refining method of aluminum, (N+1) pieces of vessels for molten aluminum (N is an integer of ≥2) and N pieces of cooling bodies for crystallizing high purity aluminum on the surface are disposed in order. Firstly, after holding raw aluminum in (N+1) pieces of vessels in a molten state, one series of processes [high purity aluminum is crystallized (1), the vessel and the cooling body are relatively shifted (2), refined aluminum is melted (3), the vessel and the cooling body are relatively shifted and refined molten aluminum is recovered from the following vessel (4)] is repeatedly performed in ≥2 times.
Inventors:
Hiroshi Tabuchi
Ichiro Tanaka
Akihiko Takahashi
Hidemitsu Shimizu
Ichiro Tanaka
Akihiko Takahashi
Hidemitsu Shimizu
Application Number:
JP2000156880A
Publication Date:
September 14, 2005
Filing Date:
May 26, 2000
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
C22B21/06; C22B9/02; H01G9/055; (IPC1-7): C22B21/06; C22B9/02; H01G9/055
Domestic Patent References:
| JP2228432A | ||||
| JP4017629A | ||||
| JP9194964A | ||||
| JP11124638A |
Attorney, Agent or Firm:
Takashi Kuboyama
Toru Nakayama
Toru Nakayama