DE959762C - Process for the extraction or refining of aluminum using highly volatile aluminum halides - Google Patents
Process for the extraction or refining of aluminum using highly volatile aluminum halidesInfo
- Publication number
- DE959762C DE959762C DEP12254D DEP0012254D DE959762C DE 959762 C DE959762 C DE 959762C DE P12254 D DEP12254 D DE P12254D DE P0012254 D DEP0012254 D DE P0012254D DE 959762 C DE959762 C DE 959762C
- Authority
- DE
- Germany
- Prior art keywords
- aluminum
- chamber
- refining
- extraction
- reaction
- 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
- C22B21/0046—Obtaining aluminium by other processes from aluminium halides
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)
Description
Verfahren zum Gewinnen bzw. Raffinieren von Aluminium mittels leichtflüchtiger Aluminiumhalogenide Bei der bekannten Gewinnung von reinem Aluminium aus unreinem Aluminium, Aluminiumlegierungen, intermetallischen Aluminiumverbindungen, mit geeigneten Reduktionsmitteln vermengten Aluminiummineralien usw. durch Behandlung der Ausgangsstoffe mit Halogeniddampf, vorzugsweise Aluminiumhalogeniddampf, läßt sich das Aluminium von seinen schwerflüchtigen Beimengungen, wie Kupfer, Eisen, Mangan oder Silizium, praktisch vollständig trennen. Auch läßt es sich von dem leichterflüchtigen Magnesium scheiden, da sich dieses bei der Arbeitstemperatur mit dem angewandten Aluminiumhalogenid oder, falls ein anderes Halogenid zur Anwendung kommt, im Verlauf des Prozesses mit dem daraus entstehenden Alumi-niumhalogenid zu Magnesiumhalogenid und Aluminium umsetzt und so dem Prozeß entzogen wird. Dagegen gelang es bisher nicht, die leichterflüchtigen und mit dem Aluminiumhalogenid sich nicht zu stabilen salzartigen Verbindungen umsetzenden Metalle zu trennen. So war es z. B. bisher nicht möglich, ein zink- oder bleifreies Aluminium herzustellen, da diese Metalle zusammen mit dem Aluminium übergehen.Process for the extraction or refining of aluminum by means of volatile Aluminum halides In the known production of pure aluminum from impure Aluminum, aluminum alloys, aluminum intermetallic compounds, with suitable Reducing agents mixed aluminum minerals, etc. by treating the raw materials with halide vapor, preferably aluminum halide vapor, the aluminum of its non-volatile additions, such as copper, iron, manganese or silicon, practically completely separate. It can also be made from the more volatile magnesium separate, as this separates at the working temperature with the aluminum halide used or, if a different halide is used, during the course of the process with the resulting aluminum halide to form magnesium halide and aluminum implemented and thus withdrawn from the process. On the other hand, the more volatile ones have not yet succeeded and do not react with the aluminum halide to form stable salt-like compounds Separate metals. It was like that B. so far not possible, a zinc or lead free Manufacture aluminum, since these metals pass along with the aluminum.
Es wurde nun entgegen den Erwartungen gefunden, daß man bei der Behandlung mit Halogeniddampf auch ein Aluminium erhalten kann, das praktisch frei von leichterflüchtigen Metallen ist. Es zeigte sich nämlich, daß durch geeignete Wahl der Strömungsgeschwindigkeit und der Abkühlungsbedingungen des die Reaktionszone verlassenden Gasgemisches erreicht werden kann, das sich die leichterflüchtigen Metalle getrennt vom Aluminium niederschlagen. Erfindungsgemäß wird die Trennung der Kondensate so vorgenommen, daß wenigstens zwei hintereinanderliegende getrennte Kondensationszonen verwandt werden.It has now been found, contrary to expectations, that one in the treatment With halide vapor, an aluminum can also be obtained that is practically free of more volatile Metals. It was found that through a suitable choice of the flow rate and the cooling conditions of the gas mixture leaving the reaction zone can be that the more volatile metals separate from Knock down aluminum. According to the invention, the separation of the condensates is carried out in such a way that that at least two consecutive separate condensation zones related will.
Beispiele Bisherige Verfahrensweise. Die Ausgangslegierung enthielt 3'/o Zn. Nach 3 Stunden waren 75,3% des Einsatzes überdestilliert. Das Destillat enthielt 3,90/0.Examples Previous procedure. The starting alloy contained 3% Zn. After 3 hours, 75.3% of the feed had distilled over. The distillate contained 3.90 / 0.
Erfindungsgemäßes Verfahren. Die Ausgangslegierung enthielt 3'/o Zn. Nach 3 Stunden waren 70,i % abdestilliert. Die AI-Partie enthielt o,o2% Zn, die Zn-Partie enthielt 97,2'/o Zn.Method according to the invention. The starting alloy contained 3% Zn. After 3 hours, 70% had distilled off. The AI batch contained 0.02% Zn, the The Zn batch contained 97.2% Zn.
In besonderen Fällen ist es von Vorteil, den Ausgangsstoff im Reaktionsraum nicht wie in der Regel laufend zuzugeben oder in Abständen durch Zugabe neuen Materials zu ergänzen, sondern diskontinuierlich zu arbeiten und die eingebrachte Charge bis zum vollständigen Entzug des Aluminiums darin zu belassen und dann erst neu zu füllen oder auf einen zweiten Reaktionsraum umzustellen. Bei einer solchen Arbeitsweise kann der erfindungsgemäße Vorschlag auch so zur Anwendung kommen, daß zwei getrennt angeordnete Kondensationskammern verwandt werden und der erste Anteil, der reich an dem leichterflüchtigen Metall ist, in die eine Kammer und der an diesen Metallen freie Anteil in der zweiten Kammer zur Kondensation gebracht wird. Man erhält dabei in der ersten Kammer eine Aluminiumlegierung, in der zweiten Kammer praktisch reines Aluminium.In special cases it is advantageous to keep the starting material in the reaction space not to be added continuously, as is usually the case, or at intervals by adding new material to supplement, but to work discontinuously and the introduced batch up to leave it in for complete removal of the aluminum and only then to refill it or to switch to a second reaction room. With such a way of working the proposal according to the invention can also be used in such a way that two are separated arranged condensation chambers are used and the first portion, the rich on the more volatile metal is in one chamber and the one on these metals free fraction is brought to condensation in the second chamber. One receives thereby an aluminum alloy in the first chamber, and practically pure in the second chamber Aluminum.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP12254D DE959762C (en) | 1948-10-02 | 1948-10-02 | Process for the extraction or refining of aluminum using highly volatile aluminum halides |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP12254D DE959762C (en) | 1948-10-02 | 1948-10-02 | Process for the extraction or refining of aluminum using highly volatile aluminum halides |
Publications (1)
Publication Number | Publication Date |
---|---|
DE959762C true DE959762C (en) | 1957-03-14 |
Family
ID=7363959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP12254D Expired DE959762C (en) | 1948-10-02 | 1948-10-02 | Process for the extraction or refining of aluminum using highly volatile aluminum halides |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE959762C (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB562108A (en) * | 1943-01-13 | 1944-06-19 | William Frederick Chubb | Improved method of and apparatus for the condensation of metallic vapours |
GB569472A (en) * | 1942-07-29 | 1945-05-25 | Ernest Priestley Newton | Apparatus for manufacture of magnesium metal |
GB574711A (en) * | 1943-01-18 | 1946-01-17 | John Lumsden | Improvements relating to the purification of zinc, cadmium and magnesium by volatilisation |
GB582579A (en) * | 1944-04-19 | 1946-11-21 | High Duty Alloys Ltd | Improvements relating to the production or refining of aluminium |
US2470306A (en) * | 1946-03-27 | 1949-05-17 | Int Alloys Ltd | Process for the production and refining of metals |
US2470305A (en) * | 1944-04-19 | 1949-05-17 | Int Alloys Ltd | Process for the production and refining of aluminium |
-
1948
- 1948-10-02 DE DEP12254D patent/DE959762C/en not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB569472A (en) * | 1942-07-29 | 1945-05-25 | Ernest Priestley Newton | Apparatus for manufacture of magnesium metal |
GB562108A (en) * | 1943-01-13 | 1944-06-19 | William Frederick Chubb | Improved method of and apparatus for the condensation of metallic vapours |
GB574711A (en) * | 1943-01-18 | 1946-01-17 | John Lumsden | Improvements relating to the purification of zinc, cadmium and magnesium by volatilisation |
GB582579A (en) * | 1944-04-19 | 1946-11-21 | High Duty Alloys Ltd | Improvements relating to the production or refining of aluminium |
US2470305A (en) * | 1944-04-19 | 1949-05-17 | Int Alloys Ltd | Process for the production and refining of aluminium |
US2470306A (en) * | 1946-03-27 | 1949-05-17 | Int Alloys Ltd | Process for the production and refining of metals |
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