Title:
アルミニウム精製用原料
Document Type and Number:
Japanese Patent JP4397714
Kind Code:
B2
Abstract:
As a raw material for refining, a raw material for aluminum refining is used, wherein the raw material contains a peritectic element and boron, the amount of boron being contained excessively by 5 to 80 mass ppm to a total chemical equivalent calculated as a metal boride with the peritectic element. In a melting furnace 1, the raw material for aluminum refining is melted into a molten metal. In a reaction chamber 2A, a metal boride is formed by reacting the peritectic element with boron in the molten metal, and the formed metal boride and the metal boride formed during the melting step are removed. Furthermore, in refining chambers 2B, 2C, 2D and 2E, a high purity aluminum from which an eutectic element containing unreacted boron is crystallized by segregation solidification.
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Inventors:
Katsuki Yoshida
Maeda Masao
Masashi Sakaguchi
Maeda Masao
Masashi Sakaguchi
Application Number:
JP2004070896A
Publication Date:
January 13, 2010
Filing Date:
March 12, 2004
Export Citation:
Assignee:
SHOWA DENKO K.K.
International Classes:
B22D1/00; C22B21/06; C22B9/02; C22B9/05; C22B9/10; C22C1/02; C22C21/00; H01G9/00; H01G9/055; C22B7/00
Domestic Patent References:
| JP2002173718A | ||||
| JP2002097528A | ||||
| JP2000104128A |
Attorney, Agent or Firm:
Hisayoshi Shimizu
Ken Takada
Yoshihito Shimizu
Ken Takada
Yoshihito Shimizu