CH296077A - Process for extracting aluminum from its alloys. - Google Patents
Process for extracting aluminum from its alloys.Info
- Publication number
- CH296077A CH296077A CH296077DA CH296077A CH 296077 A CH296077 A CH 296077A CH 296077D A CH296077D A CH 296077DA CH 296077 A CH296077 A CH 296077A
- Authority
- CH
- Switzerland
- Prior art keywords
- aluminum
- alloys
- halide
- gaseous
- alloy
- Prior art date
Links
- 229910045601 alloy Inorganic materials 0.000 title claims description 8
- 239000000956 alloy Substances 0.000 title claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 7
- 229910052782 aluminium Inorganic materials 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 4
- 150000004820 halides Chemical class 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 229910052736 halogen Inorganic materials 0.000 claims 1
- 150000002367 halogens Chemical class 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 3
- 241001676573 Minium Species 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000009466 transformation Effects 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
- 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
Procédé d'extraction de l'aluminium de ses alliages. On sait qu'il est possible d'obtenir de l'alu minium en faisant agir un halogénure et de préférence du chlorure d'aluminium à. l'état gazeux sur un alliage d'aluminium.
La réaction s'effectue dans le cas du chlo rure d'aluminium à 1000-1100 C environ, sous pression réduite, suivant l'équation
EMI0001.0003
avec formation de sous-ehlorure d'aluminium. Ce sous-chlorure est dirigé vers une zone froide où il se décompose suivant la réaction inverse de la précédente, en déposant de l'aluminium pur et en régénérant le chlorure d'aluminium.
Un mode opératoire courant consiste à faire barboter le gaz AIC13 dans une masse liquide de l'alliage à traiter, portée à la tem pérature de 1000 à 1100 C favorable à la transformation en sous-chlorure. Mais pour que le rendement de la réaction soit bon, il est indispensable qu'il se produise un contact très intime entre le gaz et le métal.
Conformément à la présente invention, le contact intime entre l'halogénure gazeux et l'alliage fondu est obtenu en introduisant cet halogénure gazeux dans le bain métallique par l'intermédiaire d'une pièce poreuse portée à une température suffisamment élevée pour que l'halogénure ne s'#7 condense pas. Le gaz passe à travers les pores de la pièce, se subdivise en un grand nombre de bulles qui pénètrent ensuite dans le bain métallique et réagissent chacune avec le métal qui les entoure.
La pièce poreuse peut être une pièce dis tincte du four ou creuset, de forme adaptée au récipient contenant l'alliage à traiter, de telle sorte que les bulles se répartissent. uni formément au sein du bain.
De telles pièces peuvent être fixées à l'extrémité d'un tube par lequel arrive le chlo rure d'aluminium gazeux, et plongées dans le bain.
La pièce peut être aussi constituée par la totalité ou une partie de la sole du four ou du fond du creuset, dans lequel se trouve l'alliage, laquelle sole ou lequel fond seront, alors entièrement ou en partie formés par une matière poreuse; on introduit dans ce cas le chlorure d'aluminium gazeux dans une boîte étanche placée sous ce fond.
Les matières poreuses utilisées seront cons tituées de préférence par de l'alumine aussi pure que possible.
Process for extracting aluminum from its alloys. It is known that it is possible to obtain aluminum minium by causing a halide and preferably aluminum chloride to act. the gaseous state on an aluminum alloy.
The reaction is carried out in the case of aluminum chloride at approximately 1000-1100 C, under reduced pressure, according to the equation
EMI0001.0003
with formation of aluminum sub-chloride. This subchloride is directed to a cold zone where it decomposes following the reverse reaction of the previous one, depositing pure aluminum and regenerating the aluminum chloride.
A common procedure consists in bubbling the AIC13 gas in a liquid mass of the alloy to be treated, brought to a temperature of 1000 to 1100 ° C. favorable to the transformation into subchloride. But for the yield of the reaction to be good, it is essential that there be a very intimate contact between the gas and the metal.
In accordance with the present invention, the intimate contact between the gaseous halide and the molten alloy is obtained by introducing this gaseous halide into the metal bath via a porous part brought to a temperature high enough for the halide does not condense. The gas passes through the pores of the room, subdivides into a large number of bubbles which then enter the metal bath and each react with the metal surrounding them.
The porous part can be a separate part of the furnace or crucible, of a shape adapted to the receptacle containing the alloy to be treated, so that the bubbles are distributed. united form within the bath.
Such parts can be attached to the end of a tube through which the gaseous aluminum chloride arrives, and immersed in the bath.
The part can also be constituted by all or part of the bottom of the furnace or the bottom of the crucible, in which the alloy is located, which bottom or which bottom will then be entirely or in part formed by a porous material; in this case, the gaseous aluminum chloride is introduced into a sealed box placed under this bottom.
The porous materials used will preferably be constituted by alumina which is as pure as possible.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR296077X | 1951-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH296077A true CH296077A (en) | 1954-01-31 |
Family
ID=8888142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH296077D CH296077A (en) | 1951-03-22 | 1952-03-21 | Process for extracting aluminum from its alloys. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH296077A (en) |
-
1952
- 1952-03-21 CH CH296077D patent/CH296077A/en unknown
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