Title:
METHOD FOR SLAGGING OFF MOLTEN AL OR AL ALLOY
Document Type and Number:
Japanese Patent JP3206203
Kind Code:
B2
Abstract:
PURPOSE: To efficiently remove the slag floating on a molten metal surface by adding obsidian to the slag on the surface of molten Al and heating the slag to a specific temp. to foam the obsidian at the time of melting the Al by using a reflection furnace.
CONSTITUTION: The obsidian is added to the slag on the molten metal surface of the Al or Al alloy and the slag is heated up to ≥900°C to foam the obsidian, by which the slag is removed together with the foamed obsidian at the time of melting the Al or Al alloy by using the reflection furnace. The amt. of the obsidian to be added is specified to about 0.5 to 10wt.%, more preferably 1 to 6wt.% of the Al alloy raw material. As a result, the slag removing property is improved and metal loss is decreased without generating the pollution of the atmoshere by generation of toxic gases.
Inventors:
Kenji Ohsumi
Kiyomasa Ohga
Motohiro Arai
Kiyomasa Ohga
Motohiro Arai
Application Number:
JP8484193A
Publication Date:
September 10, 2001
Filing Date:
April 12, 1993
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
C22B21/06; C22C1/02; (IPC1-7): C22B21/06; C22C1/02
Domestic Patent References:
| JP62162657A | ||||
| JP1178594U |
Other References:
【文献】国際公開91/6684(WO,A1)
Attorney, Agent or Firm:
Kyuichi Ueki