AT147355B - Process for the production of metallic magnesium from oxidic raw materials in an uninterrupted process. - Google Patents
Process for the production of metallic magnesium from oxidic raw materials in an uninterrupted process.Info
- Publication number
- AT147355B AT147355B AT147355DA AT147355B AT 147355 B AT147355 B AT 147355B AT 147355D A AT147355D A AT 147355DA AT 147355 B AT147355 B AT 147355B
- Authority
- AT
- Austria
- Prior art keywords
- magnesium
- oxidic
- production
- raw materials
- metallic magnesium
- Prior art date
Links
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims description 18
- 229910052749 magnesium Inorganic materials 0.000 title claims description 17
- 239000011777 magnesium Substances 0.000 title claims description 17
- 238000000034 method Methods 0.000 title claims description 11
- 238000004519 manufacturing process Methods 0.000 title description 2
- 239000002994 raw material Substances 0.000 title description 2
- 239000007788 liquid Substances 0.000 claims description 6
- 239000004215 Carbon black (E152) Substances 0.000 claims description 4
- 229930195733 hydrocarbon Natural products 0.000 claims description 4
- 150000002430 hydrocarbons Chemical class 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 4
- 150000002681 magnesium compounds Chemical class 0.000 claims 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000007858 starting material Substances 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000004821 distillation Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Gewinnung von metallischem Magnesium aus oxydischen Ausgangsstoffen in un- unterbrochenem Arbeitsgang.
Das Verfahren des Stammpatentes bezieht sich auf die Gewinnung von reinem Magnesiummetall aus Rohmagnesium oder aus magnesiumreiehen Ausgangs-oder Abfallstoffen durch Destillation, insbesondere durch Vakuumdestillation, in Gegenwart eines indifferenten oder reduzierenden Gases unter Kondensation der Dämpfe in Form eines flüssigen Niederschlages. Das Wesen dieses Verfahrens besteht darin, dass man das flüssige Kondensat in vorgelegtes Kohlenwasserstofföl eintropfen lässt und die so entstehenden gereinigten Magnesiumkörner zweckmässig mit dem Öl zusammen ausschleust.
Es hat sich nun gezeigt, dass dieses Verfahren auch die Möglichkeit bietet, bei der Darstellung von Magnesium durch R duktion von oxydischen Ausgangsstoffen bei Temperaturen oberhalb des Siedepunktes des metallischen Magnesiums unmittelbar zu kompaktem Metall in granulierter Form zu gelangen, wobei das Metall bei der Kondensation auch gereinigt wird. Man kondensiert zu diesem Zweck die aus den oxydischen Verbindungen in Freiheit gesetzten Magnesiumdämpfe unter Bedingungen, bei welchen ein flüssiger Niederschlag entsteht und lässt das Kondensat in der Art, wie dies im Stammpatent für die Destillation von Magnesium oder Magnesiumstaub beschrieben wurde, in vorgelegtes Kohlenwasserstofföl eintropfen.
Die Reduktion wird vorzugsweise unter vermindertem Druck ausgeführt.
Als Ausgangsstoff für dieses Verfahren kommt insbesondere Sintermagnesia oder ein Gemenge von MgO und CaO, wie es durch Brennen von Dolomit bis zur Sinterung gewonnen wird, in Betracht. Die Reduktion geht vorzugsweise. in an sich bekannter Weise auf aluminothermischem'oder silikothermischem Wege vor sich. Zur Durchführung des Verfahrens wird ein Gemisch des oxydischen Ausgangsstoffes mit dem Reduktionsmittel (z. B. Aluminium, Silizium oder Gemische dieser beiden Metalle), im Strom eines indifferenten oder reduzierenden Gases, zweckmässig kontinuierlich, durch einen Raum geführt, in welchem es auf den Siedepunkt oder auf eine Temperatur oberhalb des Siedepunktes des metallischen Magnesiums erhitzt wird.
Die entwickelten Magnesiumdämpfe werden durch das indifferente oder reduzierende Gas, unter Vermeidung einer Abkühlung bis zur Erstarrungstemperatur des Magnesiums, über eine die Staubabscheidung herbeiführende Hilfsvorrichtung in einen Kondesator geleitet und in diesem bis zur Verflüssigung abgekühlt. Der flüssige Niederschlag tropft in das vorgelegte Kohlenwasserstofföl ein.
Zur Durchführung des Verfahrens sind die Vorrichtungen von der Art geeignet, wie sie gemäss dem Stammpatent benutzt werden.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the production of metallic magnesium from oxidic raw materials in an uninterrupted process.
The process of the parent patent relates to the extraction of pure magnesium metal from raw magnesium or from magnesium-rich starting or waste materials by distillation, in particular by vacuum distillation, in the presence of an inert or reducing gas with condensation of the vapors in the form of a liquid precipitate. The essence of this process is that the liquid condensate is allowed to drip into the hydrocarbon oil and the cleaned magnesium grains thus produced are expediently discharged together with the oil.
It has now been shown that this process also offers the possibility of producing compact metal in granulated form in the preparation of magnesium by reducing oxidic starting materials at temperatures above the boiling point of metallic magnesium, with the metal also being condensed is cleaned. For this purpose, the magnesium vapors released from the oxidic compounds are condensed under conditions under which a liquid precipitate is formed and the condensate is allowed to drip into the hydrocarbon oil in the manner as described in the parent patent for the distillation of magnesium or magnesium dust.
The reduction is preferably carried out under reduced pressure.
Sintered magnesia or a mixture of MgO and CaO, such as is obtained by burning dolomite until sintering, is particularly suitable as the starting material for this process. The reduction is preferable. in a manner known per se in an aluminothermic or silicothermal way. To carry out the process, a mixture of the oxidic starting material with the reducing agent (e.g. aluminum, silicon or mixtures of these two metals), in a stream of an inert or reducing gas, expediently continuously, is passed through a room in which it is brought to the boiling point or heated to a temperature above the boiling point of metallic magnesium.
The evolved magnesium vapors are passed through the inert or reducing gas, avoiding cooling down to the solidification temperature of the magnesium, via an auxiliary device which causes the dust separation into a condenser and are cooled in this until it liquefies. The liquid precipitate drips into the hydrocarbon oil.
The devices of the type used in accordance with the parent patent are suitable for carrying out the method.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT140560T | 1933-05-30 | ||
| AT147355T | 1933-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT147355B true AT147355B (en) | 1936-10-26 |
Family
ID=34218535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT147355D AT147355B (en) | 1933-05-30 | 1933-12-21 | Process for the production of metallic magnesium from oxidic raw materials in an uninterrupted process. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT147355B (en) |
-
1933
- 1933-12-21 AT AT147355D patent/AT147355B/en active
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