DE2425233A1 - Extraction of gallium from gallium amalgam - by using an alkaline medium and an electrolytic voltage - Google Patents
Extraction of gallium from gallium amalgam - by using an alkaline medium and an electrolytic voltageInfo
- Publication number
- DE2425233A1 DE2425233A1 DE19742425233 DE2425233A DE2425233A1 DE 2425233 A1 DE2425233 A1 DE 2425233A1 DE 19742425233 DE19742425233 DE 19742425233 DE 2425233 A DE2425233 A DE 2425233A DE 2425233 A1 DE2425233 A1 DE 2425233A1
- Authority
- DE
- Germany
- Prior art keywords
- gallium
- extraction
- amalgam
- sodium
- mercury
- 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.)
- Granted
Links
- 238000000605 extraction Methods 0.000 title claims abstract description 11
- 229910000497 Amalgam Inorganic materials 0.000 title claims abstract description 5
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 title claims description 22
- 229910052733 gallium Inorganic materials 0.000 title claims description 22
- 238000000034 method Methods 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims abstract description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 12
- 229910052753 mercury Inorganic materials 0.000 claims description 12
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 230000008021 deposition Effects 0.000 claims description 3
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- MJGFBOZCAJSGQW-UHFFFAOYSA-N mercury sodium Chemical compound [Na].[Hg] MJGFBOZCAJSGQW-UHFFFAOYSA-N 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 229910001388 sodium aluminate Inorganic materials 0.000 claims description 2
- 229910001023 sodium amalgam Inorganic materials 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims 1
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 claims 1
- 150000004645 aluminates Chemical class 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 5
- 239000003513 alkali Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/22—Electrolytic production, recovery or refining of metals by electrolysis of solutions of metals not provided for in groups C25C1/02 - C25C1/20
-
- 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
- C22B58/00—Obtaining gallium or indium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Electrolytic Production Of Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
Verfahren zur Gewinnung von Gallium Die Erfindung betrifft ein Verfahren zur Extraktion von Gallium aus Galilumamalgam, das durch Umsetzung von Natriumaluminatlaugen des Bayer-Aluminiumoxydprozesses mit Natriumamalgam gewonnen wird, wobei das im Quecksilber angereicherte Gallium mit alkalischen Medien extrahiert wird. Method for the production of gallium The invention relates to a method for the extraction of gallium from galilum amalgam, which is produced by the conversion of sodium aluminate liquors of the Bayer aluminum oxide process is obtained with sodium amalgam, whereby the im Mercury-enriched gallium is extracted with alkaline media.
Es bestand nun die Aufgabe, diese aus DBP 1 260 797 und DBP 1 115 031 skizzierte bekannte Arbeitsweise zu verbessern und ein Verfahren zu schaffen, das bei einer kontinuierlichen Durchführung und bei gleichzeitig rationellerem Quecksilber-Einsatz bessere Ausbeuten liefert.The task now was to combine DBP 1 260 797 and DBP 1 115 031 to improve the known working method outlined and to create a process this with a continuous implementation and at the same time more rational use of mercury gives better yields.
Erfindungsgemäß wird dies dadurch erreicht, daß der elektrolytische Rückextraktionsprozeß durch Anlegen einer elektrischen Spannung unterstützt wird, wobei die Hgthaltige Phase als Anode geschaltet wird, während eine oberhalb der Quecksilberoberfläche angebrachte Metallelektrode, vorzugsweise aus Nickel, als Kathode dient.According to the invention this is achieved in that the electrolytic Back-extraction process is supported by applying an electrical voltage, whereby the Hgthaltige phase is connected as anode, while one above the Mercury surface attached metal electrode, preferably made of nickel, as Cathode is used.
Die Extraktion des Galliums aus dem Quecksilber wird nun laut beiliegender Figur -auf folgende Weise vorgenommen: Zunächst wird der Stromfluß zwischen den Elektroden 1 und 3 so lange aufrecht erhalten, bis aus dem das Natrium und Gallium enthaltenden Quecksilber das elektronegativere Natrium in Lösung gegangen ist. Nach Auswechseln der Über der Hg-haltigen Phase stehenden Lauge kann dann der elektrolytische Extraktionsprozeß fortgesetzt werden, wobei das Gallium in Lösung geht und sich an der Kathode ) niederschlägt. Um die Extraktion des Galliums aus dem Quecksilber und dessen Abscheidung an der Kathode stets in gleichem Maße vornehmen zu können, können Hilfselektroden dazugeschaltet werden.The extraction of the gallium from the mercury is now more loudly attached Figure -done in the following way: First, the current flow between the Electrodes 1 and 3 are maintained until the sodium and gallium run out containing mercury, the more electronegative sodium has gone into solution. To The electrolytic alkali can then be replaced by the Hg-containing phase Extraction process continue, the gallium goes into solution and becomes at the cathode). To the extraction of the gallium from the mercury and to be able to deposit it on the cathode to the same extent, auxiliary electrodes can be switched on.
Anstelle der Zuschaltung dieser Hilfsolekt-odes1 kann ein Teil der elektrolytischen Abscheidung von Gallium aus der Lauge auch in einem zweiten Behälter vorgenommen werden.Instead of connecting this auxiliary odes1, a part of the electrolytic deposition of gallium from the liquor also in a second container be made.
Der Extraktionsvorgang des Galliums aus Quecksilber kann auch in einem einzigen Verfahrensschritt durchgeführt werden, nur wirkt sich dann als nachteilig aus, daß sich die über dem Quecksilber stehende Lauge zu stark mit Alkali anreichert, so daß periodisch zumindest ein Teil des Elektrolyten gegen reines Wasser ausgetauscht werden muß.The process of extracting gallium from mercury can also be carried out in one single process step can be carried out, only then has a disadvantageous effect from the fact that the lye above the mercury is too strongly enriched with alkali, so that periodically at least part of the electrolyte is exchanged for pure water must become.
In der Zeichnung bedeuten im einzelnen 1 die anodisch geschaltete Hg-haltige Phase, 2 die wässrige alkalihaltige Phase, 3 die Kathode, die entweder, wie in der Figur in der Mitte, aber auch an anderer Stelle und in anderer Form in die Flüssigkeitsphase 2 ragt.In the drawing, 1 denotes the anodically connected Hg-containing phase, 2 the aqueous alkaline phase, 3 the cathode, which is either, as in the figure in the middle, but also elsewhere and in a different form in the liquid phase 2 protrudes.
Die Hilfselektrode 5 (+) ermöglicht ein gekoppelt gleichförmig anodisches Inlösunggehen wie auch kathodisches Abscheiden des Galliums.The auxiliary electrode 5 (+) enables a coupled uniformly anodic Dissolving as well as cathodic deposition of the gallium.
Mit dem Rührwerk 4 wird das Hg gerührt, um eine ständig neue mit Gallium beladene Oberfläche für die elektrolytische Auf lösung an der Grenzfläche Lauge - Quecksilber anzubieten.With the agitator 4, the Hg is stirred to a constantly new one with gallium loaded surface for electrolytic dissolution at the lye interface - Offering mercury.
Das an der Elektrode 3 sich abscheidende flüssige Gallium wird in dem Sammelbehälter 6 aufgefangen und gegen die quecksilberhaltige Phase abgegrenzt. Durch den Auslaß 7 wird das flüssige Gallium periodisch abgelassen.The liquid gallium deposited on the electrode 3 is in the collecting container 6 and separated from the mercury-containing phase. The liquid gallium is periodically drained through the outlet 7.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742425233 DE2425233C3 (en) | 1974-05-24 | Process for the extraction of gallium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742425233 DE2425233C3 (en) | 1974-05-24 | Process for the extraction of gallium |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2425233A1 true DE2425233A1 (en) | 1975-12-11 |
| DE2425233B2 DE2425233B2 (en) | 1977-07-07 |
| DE2425233C3 DE2425233C3 (en) | 1978-02-16 |
Family
ID=
Also Published As
| Publication number | Publication date |
|---|---|
| DE2425233B2 (en) | 1977-07-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) |