GB740500A - Improvements in or relating to recovery of metal from aluminous drosses - Google Patents
Improvements in or relating to recovery of metal from aluminous drossesInfo
- Publication number
- GB740500A GB740500A GB2295953A GB2295953A GB740500A GB 740500 A GB740500 A GB 740500A GB 2295953 A GB2295953 A GB 2295953A GB 2295953 A GB2295953 A GB 2295953A GB 740500 A GB740500 A GB 740500A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- dross
- container
- chamber
- cradle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/0038—Obtaining aluminium by other processes
- C22B21/0069—Obtaining aluminium by other processes from scrap, skimmings or any secondary source aluminium, e.g. recovery of alloy constituents
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
740,500. Recovering aluminium or its alloys from dross. ALUMINUM CO. OF AMERICA. Aug. 20, 1953 [Aug. 30, 1952], No. 22959/53. Class 82 (1). In the recovery of aluminium or aluminium alloy from aluminous dross, freshly skimmed hot dross containing no solid aluminous metal is introduced into a chamber provided with a non-oxidizing atmosphere containing at least 50 per cent aluminium chloride, the dross being agitated whilst its temperature is kept sufficiently high to maintain the aluminium or aluminium alloy in the liquid condition. The agitation may last up to 15 minutes and may be repeated up to 3 times. The non-oxidizing atmosphere may contain an inert gas such as nitrogen or argon, the aluminium chloride being obtained by vaporizing solid chloride before or after introduction into the chamber, or by introducing gaseous chlorine at a rate not exceeding 0.005 pound per minute per pound of dross so as to react with a small proportion of the aluminium or aluminium alloy. The chamber should not be more than 2/3 full of dross, and it may be so constructed, or fitted with a valve or vent, to allow a little aluminium chloride to escape. It may be stationary and contain mechanically operated paddles, or it may comprise a cylinder inclined at 30-60 degrees to the horizontal and rotated at 1-20 r.p.m. In the form shown, the chamber comprises a cylindrical container 2 with a cover 4, a refractory lining 6, a chlorinesupply pipe 12, and a tap-hole 14 for draining off liquid metal 52 from beneath the dross 50. The edge of the cover carries spaced ball-bearing units 10 which bear against a pressure plate 56 attached to a crosshead 58 with flanged lugs 60 to engage under the cover, this assembly being raised and lowered by the piston rod 64 of an air cylinder. The container 2 is carried by a turntable 18, a bearing 20 and the base 34 of a cradle in which it is clamped by a band 54. The cradle is supported on trunnions 36 on a main frame 44, and is tiltable by gearing 38, 40 operated by a crank handle 42 or by power. The vertical members 32 of the cradle carry extensions 66 serving as guides for the crosshead 58. The container 2 carries two tracks 22 for engaging three unequally spaced sets of rollers 24 on shafts 26, one set being driven by a motor and speed-reduction unit 30 to rotate the container when in its inclined position. Specification 370,694 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US740500XA | 1952-08-30 | 1952-08-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB740500A true GB740500A (en) | 1955-11-16 |
Family
ID=22117387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2295953A Expired GB740500A (en) | 1952-08-30 | 1953-08-20 | Improvements in or relating to recovery of metal from aluminous drosses |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB740500A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000031482A1 (en) * | 1998-11-23 | 2000-06-02 | Mawar Malaysian Limited | Improved apparatus and process for separating aluminium from a mixture of aluminium and aluminium dross |
US6767382B2 (en) | 1999-04-08 | 2004-07-27 | Mawar Malaysian Limited | Aluminium processing apparatus and process for separating aluminium from a mixture of aluminium and aluminium dross |
-
1953
- 1953-08-20 GB GB2295953A patent/GB740500A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000031482A1 (en) * | 1998-11-23 | 2000-06-02 | Mawar Malaysian Limited | Improved apparatus and process for separating aluminium from a mixture of aluminium and aluminium dross |
EP1135660A1 (en) * | 1998-11-23 | 2001-09-26 | Mawar Malaysian Limited | Improved apparatus and process for separating aluminium from a mixture of aluminium and aluminium dross |
EP1135660A4 (en) * | 1998-11-23 | 2004-07-14 | Mawar Malaysian Ltd | Improved apparatus and process for separating aluminium from a mixture of aluminium and aluminium dross |
US6767382B2 (en) | 1999-04-08 | 2004-07-27 | Mawar Malaysian Limited | Aluminium processing apparatus and process for separating aluminium from a mixture of aluminium and aluminium dross |
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