Title:
TREATMENT OF ALUMINUM DROSS
Document Type and Number:
Japanese Patent JP3003836
Kind Code:
B2
Abstract:
PURPOSE: To enhance the recovery rate of metals and to obtain useful dross having a high metal concn. by compressing the Al dross of a specific thickness housed in a vessel specified in the opening area ratio and form of a bottom plate with the compressing force of a specific range.
CONSTITUTION: The Al dross 9 kept at the m.p. of the Al or above is housed into the vessel 1 formed by using a perforated plate 11 having the opening area ratio of ≥20%, more preferably ≥30% as its bottom plate. The vessel is formed by specifying the ratio of the minor axis and major axis to the side walls passing the centroid of at the cross section of the bottom to 1:1 to 1:2. The vessel is also so formed that the max. housing thickness of the dross 9 attains 0.3 to 0.7 tinges the major axis. The dross 9 is then pressed and compressed by a piston head 41 of a hydraulic pressing cylinder 4 via a pressing plate 8. At this time, the final pressing pressure on the dross 9 is set at 2 to 5MPa.
Inventors:
Hiroshi Watanabe
Masatoshi Nanba
Kunio Hayashi
Masatoshi Nanba
Kunio Hayashi
Application Number:
JP22744294A
Publication Date:
January 31, 2000
Filing Date:
August 30, 1994
Export Citation:
Assignee:
NIPPON LIGHT METAL COMPANY,LTD.
Okaya Koki Co., Ltd.
Hokuko Co., Ltd.
Okaya Koki Co., Ltd.
Hokuko Co., Ltd.
International Classes:
C22B7/04; C22B21/00; (IPC1-7): C22B21/00; C22B7/04
Domestic Patent References:
| JP649550A | ||||
| JP6192755A | ||||
| JP6200318A | ||||
| JP6210287B2 |
Attorney, Agent or Firm:
Kazuichi Shirakawa
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