EP1031634A1 - Separation refining of metal melts by addition of metal hydrides, especially MgH2 - Google Patents
Separation refining of metal melts by addition of metal hydrides, especially MgH2 Download PDFInfo
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- EP1031634A1 EP1031634A1 EP00102815A EP00102815A EP1031634A1 EP 1031634 A1 EP1031634 A1 EP 1031634A1 EP 00102815 A EP00102815 A EP 00102815A EP 00102815 A EP00102815 A EP 00102815A EP 1031634 A1 EP1031634 A1 EP 1031634A1
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- Prior art keywords
- metal
- metals
- alloys
- hydride
- separation
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 36
- 239000002184 metal Substances 0.000 title claims abstract description 36
- 229910052987 metal hydride Inorganic materials 0.000 title claims abstract description 18
- 150000004681 metal hydrides Chemical class 0.000 title claims abstract description 18
- 238000000926 separation method Methods 0.000 title claims abstract description 9
- 239000000155 melt Substances 0.000 title claims abstract description 7
- 229910012375 magnesium hydride Inorganic materials 0.000 title description 8
- 238000007670 refining Methods 0.000 title description 2
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 20
- 239000000956 alloy Substances 0.000 claims abstract description 19
- 150000002739 metals Chemical class 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 14
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 12
- 239000011701 zinc Substances 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000011777 magnesium Substances 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000010953 base metal Substances 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- -1 ferrous metals Chemical class 0.000 claims 1
- 150000004678 hydrides Chemical class 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910001092 metal group alloy Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000002161 passivation Methods 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910018134 Al-Mg Inorganic materials 0.000 description 2
- 229910018467 Al—Mg Inorganic materials 0.000 description 2
- 241000722270 Regulus Species 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 239000011135 tin Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000967 As alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- YZCKVEUIGOORGS-UHFFFAOYSA-N Hydrogen atom Chemical compound [H] YZCKVEUIGOORGS-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910009369 Zn Mg Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000005494 tarnishing Methods 0.000 description 1
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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/32—Refining zinc
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
- B22F3/1121—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers
- B22F3/1125—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers involving a foaming process
-
- 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
- C22B21/06—Obtaining aluminium refining
-
- 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
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
Definitions
- the invention relates to a method for separating molten metals, the metal melts being treated with metal hydrides become.
- a first embodiment of the present invention exists thus in a process for the separation of metal melts II.
- Main group and sub-groups including of their alloys which is characterized in that the Metals or alloys with a metal hydride in one Melt converts.
- these metals are therefore selected from Non-ferrous and non-precious metals, especially selected made of magnesium, calcium, aluminum, silicon, titanium or Zinc and their alloys. If in the sense of the present Invention the term alloy is used, so is this to understand that this at least 30 wt .-% of mentioned metal included.
- Another preferred embodiment of the present invention consists in using metals or metal alloys one of the metal hydrides to be separated.
- metals or metal alloys For separation of magnesium, for example, it is particularly special Advantage of using magnesium hydride.
- magnesium hydride In an analogous way of course, the use of mixed metal hydrides the implementation of alloys possible. In the same way it is but also possible through a special selection of the metal hydride or the metal hydrides deliberately new material components in to introduce the metal alloy.
- the molar ratio from metal including alloys to metal hydride in the range from 1 to 0.0001 to 1 to 100, preferably in the range of 1 in 0.001 to 1 in 0.01, especially in the range of 1 in 0.005 to 1 in 0.03 is set.
- This area is special prefers. Both play within the aforementioned areas economic considerations play a special role as well the possibility of repeating the treatment or implementation several times.
- impurities especially volatile metal hydride to separate forming impurities from a metal.
- the metals or alloys become molten treated with the metal hydrides.
- Advantageously get the hydrides are used, the metals of which are also used as alloy components act in the metal matrix.
- a powdery Al-Mg alloy is applied with a small amount of autocatalytically produced magnesium hydride (TEGO-Magnan®) and heats this mixture in a muffle to about 1000 ° C, so after cooling the Reaction mixture, the solidified metal obtained is light silver shiny outer and inner surfaces that look more ordinary Do not start air even after months of storage.
- TEGO-Magnan® autocatalytically produced magnesium hydride
- zinc Electrode zinc
- a steel capsule was filled with a mixture consisting of 500 g of a 99.5% by weight magnesium powder and 10 g of a 95% by weight autocatalytically produced magnesium hydride (Tego Magnan®), charged and in an inerted induction furnace heated to 750 ° C. The temperature was held for about 3 minutes; then the reaction mixture was cooled. Was received a regulus crisscrossed by light silvery cavities, which even after 3 months of storage in an ordinary atmosphere neither on these cavity surfaces generated by the process, still inclined to the light silver saw cut surface Tarnishing showed.
- Cat Magnan® autocatalytically produced magnesium hydride
- Example 1 As in Example 1, a steel capsule with a mixture was composed from 700 g of a 99.99% by weight lumpy electrolyte zinc and 14 g of a 95 wt .-% autocatalytically produced Magnesium hydride (Tego Magnan®) loaded and in one inerted induction furnace heated to 550 ° C. After about The reaction mixture was cooled for 10 minutes. Receive became a Zn-Regulus, whose saw cut surface even after months Storage in the atmosphere no start-up behavior showed.
- Cat Magnan® Magnesium hydride
- Elemental analysis proves the separation effect achieved by hydride treatment: sample description % Bi % Cu % Fe % Pb % Sn Zn (Initial state) ⁇ 0.001 0.0018 0.0025 0.0023 0.0015 Zn (after treatment with magnesium hydride) ⁇ 0.001 ⁇ 0.001 0.0011 0.0012 ⁇ 0.001
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Separation von Metallschmelzen, wobei die Metallschmelzen mit Metallhydriden behandelt werden.The invention relates to a method for separating molten metals, the metal melts being treated with metal hydrides become.
Magnesium, Aluminium und Zink sowie dessen Legierungen und zahlreiche andere unedle Metalle bedecken sich bereits unter Umwelteinflüssen mit einer mehr oder minder schützenden Oxidhaut (Passivierung). Als Folge dieser Hautbildung nehmen die Metalle eine oft unerwünschte graue Färbung an. Gerade beim Aluminium ist bekannt, daß Verunreinigungen wie Eisen, Silicium und andere Fremdmetalle sowie deren Reaktionsprodukte die Transparenz des gebildeten Oxidfilms herabsetzen und der Oberfläche eine mattgraue Farbe verleihen (Kirk-Othmer, Encyclopedia of Chemical Technology, 4th Ed., Vol. 2, S. 247).Magnesium, aluminum and zinc as well as their alloys and numerous other base metals are already covered Environmental influences with a more or less protective oxide skin (Passivation). As a result of this skin formation, the Metals an often undesirable gray color. Especially with Aluminum is known to be impurities such as iron, silicon and other foreign metals and their reaction products Reduce the transparency of the oxide film and the surface give a matt gray color (Kirk-Othmer, Encyclopedia of Chemical Technology, 4th Ed., Vol. 2, p. 247).
Andererseits erschließt erst die Passivität ihrer Oxidschichten den unedlen Metallen zahlreiche Anwendungen. Die Behandlung der Metalle mit Reduktionsmitteln, z. B. mit nascierendem Wasserstoff und Wasserstoffgas in der Hitze, führt zu einem Verlust der Passivität (Römpps Chemie Lexikon, 9. Auflage (1991), S. 3230).On the other hand, the passivity of their oxide layers is only revealed numerous applications for base metals. Treatment of the Metals with reducing agents, e.g. B. with nascent hydrogen and hydrogen gas in the heat leads to a loss passivity (Römpps Chemie Lexikon, 9th edition (1991), P. 3230).
Erstaunlicherweise wurde nun gefunden, daß man durch Beaufschlagung geschmolzener Metalle oder Metall-Legierungen mit Metallhydriden, insbesondere von Al und Al-Legierungen (Al-Mg), hochreflektierende Metalloberflächen erzeugt, die - wie ihre nicht vorhandene Neigung zum Anlaufen zeigt - zugleich gegenüber üblichen Umwelteinflüssen passiviert sind. Surprisingly, it has now been found that one can act through molten metals or metal alloys with metal hydrides, especially of Al and Al alloys (Al-Mg), creates highly reflective metal surfaces that - like yours non-existent tendency to tarnish shows - at the same time opposite usual environmental influences are passivated.
Eine erste Ausführungsform der vorliegenden Erfindung besteht somit in einem Verfahren zur Separation von Metallschmelzen der II. bis IV. Hauptgruppe und der Nebengruppen einschließlich ihrer Legierungen, das dadurch gekennzeichnet ist, daß man die Metalle oder Legierungen mit einem Metallhydrid in einer Schmelze umsetzt.A first embodiment of the present invention exists thus in a process for the separation of metal melts II. To IV. Main group and sub-groups including of their alloys, which is characterized in that the Metals or alloys with a metal hydride in one Melt converts.
Beim Aufschmelzen von Metallen oder Legierungen in Anwesenheit von Metallhydrid konnte eine Auftrennung von Metall- bzw. Legierungsbestandteilen beobachtet werden, die sich beispielsweise anhand einer die Schmelze bzw. den erstarrten Regulus bedeckenden Aufrahmung zeigt. Nach dieser Behandlung weisen die Metalle bzw. Metall-Legierungen eine geänderte chemische Zusammensetzung verglichen mit dem unbehandelten Vormaterial auf.When melting metals or alloys in the presence of metal hydride was able to separate metal or alloy components can be observed, for example based on one that covers the melt or the solidified regulus Creaming shows. After this treatment, the Metals or metal alloys have a changed chemical composition compared to the untreated primary material.
In einer bevorzugten Ausführungsform der vorliegenden Erfindung sind die Metalle ausgewählt aus solchen, die unter üblichen Umwelteinflüssen einer äußeren Passivierung, insbesondere einer Oxidhautbildung unterliegen. Besonders bevorzugt im Sinne der vorliegenden Erfindung sind daher diese Metalle ausgewählt aus Nichteisenmetallen und Nichtedelmetallen, insbesondere ausgewählt aus Magnesium, Calcium, Aluminium, Silicium, Titan oder Zink sowie deren Legierungen. Wenn im Sinne der vorliegenden Erfindung der Begriff Legierung verwendet wird, so ist dieser dahingehend zu verstehen, daß diese wenigstens 30 Gew.-% des genannten Metalls enthalten.In a preferred embodiment of the present invention are the metals selected from those that are under normal environmental influences an external passivation, in particular one Are subject to oxide skin formation. Particularly preferred in the sense of In the present invention, these metals are therefore selected from Non-ferrous and non-precious metals, especially selected made of magnesium, calcium, aluminum, silicon, titanium or Zinc and their alloys. If in the sense of the present Invention the term alloy is used, so is this to understand that this at least 30 wt .-% of mentioned metal included.
Eine weitere bevorzugte Ausführungsform der vorliegenden Erfindung besteht darin, daß man Metalle oder Metall-Legierungen mit einem der zu separierenden Metallhydride umsetzt. Zur Separierung von Magnesium ist es somit beispielsweise von besonderem Vorteil, Magnesiumhydrid einzusetzen. In analoger Weise ist selbstverständlich auch der Einsatz von Mischmetallhydriden bei der Umsetzung von Legierungen möglich. In gleicher Weise ist es aber auch möglich, durch eine besondere Auswahl des Metallhydrids oder der Metallhydride bewußt neue Stoffkomponenten in die Metall-Legierung einzuführen.Another preferred embodiment of the present invention consists in using metals or metal alloys one of the metal hydrides to be separated. For separation of magnesium, for example, it is particularly special Advantage of using magnesium hydride. In an analogous way of course, the use of mixed metal hydrides the implementation of alloys possible. In the same way it is but also possible through a special selection of the metal hydride or the metal hydrides deliberately new material components in to introduce the metal alloy.
Eine weitere besonders bevorzugte Ausführungsform der vorliegenden Erfindung besteht darin, daß das Stoffmengenverhältnis von Metall einschließlich Legierungen zu Metallhydrid im Bereich von 1 zu 0,0001 bis 1 zu 100, vorzugsweise im Bereich von 1 zu 0,001 bis 1 zu 0,01, insbesondere im Bereich von 1 zu 0,005 bis 1 zu 0,03 eingestellt wird. Dieser Bereich ist besonders bevorzugt. Innerhalb der vorgenannten Bereiche spielen sowohl wirtschaftliche Erwägungen eine besondere Rolle, wie auch die Möglichkeit, die Behandlung oder Umsetzung mehrfach zu wiederholen.Another particularly preferred embodiment of the present Invention is that the molar ratio from metal including alloys to metal hydride in the range from 1 to 0.0001 to 1 to 100, preferably in the range of 1 in 0.001 to 1 in 0.01, especially in the range of 1 in 0.005 to 1 in 0.03 is set. This area is special prefers. Both play within the aforementioned areas economic considerations play a special role as well the possibility of repeating the treatment or implementation several times.
Mit Hilfe der vorliegenden Erfindung ist es somit beispielsweise möglich, Verunreinigungen, insbesondere flüchtige Metallhydrid bildende Verunreinigungen aus einem Metall abzutrennen.With the help of the present invention it is thus for example possible impurities, especially volatile metal hydride to separate forming impurities from a metal.
Die Metalle oder Legierungen werden im schmelzflüssigen Zustand mit den Metallhydriden behandelt. Vorteilhafterweise gelangen dabei die Hydride zur Anwendung, deren Metalle auch als Legierungskomponente in der Metallmatrix wirken.The metals or alloys become molten treated with the metal hydrides. Advantageously get the hydrides are used, the metals of which are also used as alloy components act in the metal matrix.
Für den Fachmann nicht vorhersehbar war die Beobachtung, daß das erfindungsgemäße Verfahren einen attraktiven dekorativen Effekt (glänzende Oberfläche) mit dem Nutzen eines durch die Passivierung gegenüber üblichen Umwelteinflüssen gesteigerten Gebrauchswertes verbindet.The observation that the inventive method an attractive decorative Effect (glossy surface) with the benefit of one by the Passivation increased compared to usual environmental influences Usage combines.
Beispielsweise werden für Lampenreflektoren und glänzende Verzierungen im Automobil- und Maschinenbau hochreine Legierungen eingesetzt, die eine maximale Reflexion und Glanz gewährleisten sollen (Kirk-Othmer, Encyclopedia of Chemical Technology, 4th Ed., Vol. 2, S. 247). Die Reinheit des Metalles und seiner Oberflächen ist somit direkt mit dem beobachteten Glanz und Reflektionsvermögen verknüpft, so daß man direkt hieraus ableiten kann, daß die nach dem erfindungsgemäßen Verfahren gewonnenen Metalle von sehr hoher Reinheit sind. Vor dem Hintergrund, daß kommerziell verfügbare Metalle oft mit Reinheiten nahe 100 % eingesetzt werden, die mit besonderen Verfahren gegen Umwelteinflüsse passiviert werden, offenbart sich das erfindungsgemäße Verfahren als ein effizienter Raffinationsprozeß beispielsweise zur Abtrennung von Verunreinigungen, insbesondere flüchtiger Metallhydrid bildender Verunreinigungen.For example, for lamp reflectors and shiny decorations in automotive and mechanical engineering high-purity alloys used to ensure maximum reflection and shine (Kirk-Othmer, Encyclopedia of Chemical Technology, 4th Ed., Vol. 2, p. 247). The purity of the metal and its Surfaces are thus directly related to the observed gloss and reflectivity linked so that you can derive directly from it can that obtained by the inventive method Metals are of very high purity. Against the background that commercially available metals often with purities close to 100% are used with special procedures against environmental influences passivated, the invention reveals itself Process as an efficient refining process, for example for the separation of impurities, especially volatile Metal hydride-forming impurities.
Beaufschlagt man beispielsweise eine pulverförmige Al-Mg-Legierung mit einer kleinen Menge autokatalytisch hergestellten Magnesiumhydrids (TEGO-Magnan®) und erhitzt dieses Gemisch in einer Muffel auf ca. 1000 °C, so weist nach dem Erkalten der Reaktionsmischung das gewonnene, erstarrte Metall hellsilbern glänzende äußere und innere Oberflächen auf, die an gewöhnlicher Luft selbst nach monatelanger Lagerung nicht anlaufen. Eine analoge Beobachtung konnte auch bei der Umsetzung von Zink (Elektrolyt-Zink) mit Magnesiumhydrid gemacht werden. Neben einer silbrig glänzenden, unter Umwelteinflüssen stabilen Oberfläche konnte gefunden werden, daß der Gehalt von Blei, Zinn, Eisen und Kupfer deutlich abgenommen hatte.For example, a powdery Al-Mg alloy is applied with a small amount of autocatalytically produced magnesium hydride (TEGO-Magnan®) and heats this mixture in a muffle to about 1000 ° C, so after cooling the Reaction mixture, the solidified metal obtained is light silver shiny outer and inner surfaces that look more ordinary Do not start air even after months of storage. An analogous observation could also be made with the implementation of zinc (Electrolyte zinc) can be made with magnesium hydride. In addition to one silvery shiny, stable surface under environmental influences could be found that the content of lead, tin, Iron and copper had decreased significantly.
Eine Stahlkapsel wurde mit einer Mischung, bestehend aus 500 g eines 99,5 gew.-%igen Magnesiumpulvers und 10 g eines 95 gew.-%igen autokatalytisch hergestellten Magnesiumhydrids (Tego Magnan®), beschickt und in einem inertisierten Induktionsofen auf 750 °C erhitzt. Die Temperatur wurde ca. 3 Minuten gehalten; dann wurde die Reaktionsmischung abgekühlt. Erhalten wurde ein von hellsilbrig glänzenden Hohlräumen durchzogener Regulus, der selbst nach 3 Monaten Lagerung an gewöhnlicher Atmosphäre weder an diesen durch den Prozeß generierten Hohlraumoberflächen, noch an der hellsilbernen Sägeschnittfläche Neigung zum Anlaufen zeigte.A steel capsule was filled with a mixture consisting of 500 g of a 99.5% by weight magnesium powder and 10 g of a 95% by weight autocatalytically produced magnesium hydride (Tego Magnan®), charged and in an inerted induction furnace heated to 750 ° C. The temperature was held for about 3 minutes; then the reaction mixture was cooled. Was received a regulus crisscrossed by light silvery cavities, which even after 3 months of storage in an ordinary atmosphere neither on these cavity surfaces generated by the process, still inclined to the light silver saw cut surface Tarnishing showed.
Die Elementaranalyse verdeutlicht den durch die Hydridbehandlung
erreichten Separationsprozeß:
Anlog Beispiel 1 wurde eine Stahlkapsel mit einer Mischung, bestehend aus 700 g eines 99,99 gew.-%igen stückigen Elektrolytzinks und 14 g eines 95 gew.-%igen autokatalytisch hergestellten Magnesiumhydrids (Tego Magnan®) beschickt und in einem inertisierten Induktionsofen auf 550 °C erhitzt. Nach ca. 10 Minuten wurde die Reaktionsmischung abgekühlt. Erhalten wurde ein Zn-Regulus, dessen Sägeschnittfläche selbst nach monatelanger Lagerung an der Atmosphäre kein Anlaufverhalten zeigte. As in Example 1, a steel capsule with a mixture was composed from 700 g of a 99.99% by weight lumpy electrolyte zinc and 14 g of a 95 wt .-% autocatalytically produced Magnesium hydride (Tego Magnan®) loaded and in one inerted induction furnace heated to 550 ° C. After about The reaction mixture was cooled for 10 minutes. Receive became a Zn-Regulus, whose saw cut surface even after months Storage in the atmosphere no start-up behavior showed.
Die Elementaranalytik belegt den durch die Hydridbehandlung erzielten
Separationseffekt:
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19907857 | 1999-02-24 | ||
| DE19907857 | 1999-02-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1031634A1 true EP1031634A1 (en) | 2000-08-30 |
Family
ID=7898627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00102815A Withdrawn EP1031634A1 (en) | 1999-02-24 | 2000-02-11 | Separation refining of metal melts by addition of metal hydrides, especially MgH2 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6387154B1 (en) |
| EP (1) | EP1031634A1 (en) |
| CA (1) | CA2298874A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10024776C1 (en) * | 2000-05-19 | 2001-09-06 | Goldschmidt Ag Th | Zinc treated with metal hydride is used in organometallic synthesis, especially synthesis of cyclopropane derivatives and zinc organyl compounds and in Reformatsky and analogous reactions |
| WO2002094483A3 (en) * | 2001-05-19 | 2003-03-13 | Goldschmidt Ag Th | Production of metal foams |
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|---|---|---|---|---|
| DE102014209408A1 (en) | 2014-05-19 | 2015-11-19 | Evonik Degussa Gmbh | Ethoxylate preparation using highly active double metal cyanide catalysts |
| ES2676430T3 (en) | 2015-11-11 | 2018-07-19 | Evonik Degussa Gmbh | Curable polymers |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB807531A (en) * | 1955-02-11 | 1959-01-14 | Patentverwertung Ag | Process for the production of castings |
| SU831834A1 (en) * | 1979-10-16 | 1981-05-23 | Московский Ордена Трудового Крас-Ного Знамени Институт Стали Исплавов | Slag producing mixture for melt refining |
| EP0618303A1 (en) * | 1993-03-26 | 1994-10-05 | Hitachi Metals, Ltd. | Airtight aluminum alloy casting and its manufacturing method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2983597A (en) * | 1959-06-11 | 1961-05-09 | Lor Corp | Metal foam and method for making |
| US3940262A (en) * | 1972-03-16 | 1976-02-24 | Ethyl Corporation | Reinforced foamed metal |
-
2000
- 2000-02-11 EP EP00102815A patent/EP1031634A1/en not_active Withdrawn
- 2000-02-15 CA CA002298874A patent/CA2298874A1/en not_active Abandoned
- 2000-02-23 US US09/510,860 patent/US6387154B1/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB807531A (en) * | 1955-02-11 | 1959-01-14 | Patentverwertung Ag | Process for the production of castings |
| SU831834A1 (en) * | 1979-10-16 | 1981-05-23 | Московский Ордена Трудового Крас-Ного Знамени Институт Стали Исплавов | Slag producing mixture for melt refining |
| EP0618303A1 (en) * | 1993-03-26 | 1994-10-05 | Hitachi Metals, Ltd. | Airtight aluminum alloy casting and its manufacturing method |
Non-Patent Citations (1)
| Title |
|---|
| DATABASE WPI Section Ch Week 198210, Derwent World Patents Index; Class M24, AN 1982-19539E, XP002139759 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10024776C1 (en) * | 2000-05-19 | 2001-09-06 | Goldschmidt Ag Th | Zinc treated with metal hydride is used in organometallic synthesis, especially synthesis of cyclopropane derivatives and zinc organyl compounds and in Reformatsky and analogous reactions |
| US6521771B2 (en) | 2000-05-19 | 2003-02-18 | Goldschmidt Ag | Use of zinc treated with metal hydride in organometallic synthesis |
| WO2002094483A3 (en) * | 2001-05-19 | 2003-03-13 | Goldschmidt Ag Th | Production of metal foams |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2298874A1 (en) | 2000-08-24 |
| US6387154B1 (en) | 2002-05-14 |
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