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Title:
METHOD FOR RECYCLING MOLTEN METAL OF ALUMINUM SCRAP
Document Type and Number:
Japanese Patent JP2005256157
Kind Code:
A
Abstract:

To provide a method for recycling aluminum, which removes non-metallic inclusions and alloy elements in a molten aluminum metal by only passing the molten aluminum metal through a filter at high pressure, does not need a complicated apparatus, has a simple process that needs just a short time, and further gives little influence on the environment.

The method for recycling aluminum comprises filtering the molten aluminum metal at high pressure with the filter made of short fibers of aluminum borate which has a property of reacting with the alloy elements in the molten aluminum metal and adsorbs it on the surface, to remove magnesium in the molten metal; and passing the molten aluminum metal at high pressure through the filter made of short fibers of calcium carbonate which are refined from a scallop shell, to deposit the non-metallic inclusions in the molten metal and a compound containing iron and silicon which has been crystallized in the molten metal on the filter and remove them. The method needs just a simple apparatus and process, and in addition, gives little influence on the environment.


Inventors:
Takahashi, Hidenori
Miyakoshi, Yasuki
Kamoda, Shuichi
Application Number:
JP2004000114785
Publication Date:
September 22, 2005
Filing Date:
March 12, 2004
Export Citation:
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Assignee:
HOKKAIDO
International Classes:
C22B21/06; C22B9/02; (IPC1-7): C22B21/06; C22B9/02