AT84706B - Process for the electrolytic extraction of zinc from ore and other zinc-containing materials. - Google Patents
Process for the electrolytic extraction of zinc from ore and other zinc-containing materials.Info
- Publication number
- AT84706B AT84706B AT84706DA AT84706B AT 84706 B AT84706 B AT 84706B AT 84706D A AT84706D A AT 84706DA AT 84706 B AT84706 B AT 84706B
- Authority
- AT
- Austria
- Prior art keywords
- zinc
- electrolyte
- ore
- fresh
- containing materials
- Prior art date
Links
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims description 12
- 239000011701 zinc Substances 0.000 title claims description 12
- 229910052725 zinc Inorganic materials 0.000 title claims description 12
- 238000000034 method Methods 0.000 title claims description 7
- 239000000463 material Substances 0.000 title claims description 4
- 238000000605 extraction Methods 0.000 title claims description 3
- 239000003792 electrolyte Substances 0.000 claims description 15
- 239000002253 acid Substances 0.000 claims description 9
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000005363 electrowinning Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Electrolytic Production Of Metals (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur elektrolytischen Gewinnung von Zink aus Erzen und anderen zinkhaltigen
Materialien.
Vorliegende Erfindung betrifft ein Verfahren zur elektrolytischen Gewinnung von Zink aus Erzen und anderen zinkhaltigen Materialien, bei welchem ein Elektrolyt von hohem Säuregehalt, beispielsweise wässerige Zinksulfatlösung von 240 g Zink und 75 g freier Säure pro , durch einen Strom von hoher Dichte, beispielsweise von 5 bis 33 Ampère pro i dm2, elektrolysiert wird.
Dieses bekannte Verfahren kann nicht im ununterbrochenen Betrieb ausgeführt werden.
Dieser Umstand sowie der bei jedem Beschicken notwendige Zusatz von freier Säure macht das Verfahren kostspielig und zeitraubend.
Gemäss der Erfindung wird dieses bekannte Verfahren für ununterbrochenen Betrieb geeignet und zugleich der Zusatz von frischer Säure zu jeder Beschickung entbehrlich gemacht und überdies werden einige andere Vorteile in folgender Weise erreicht :
Ist eine Beschickung bis zu der vorteilhaften Grenze elektrolysiert, also eine Menge von etwa 60 g Zink pro l aus der Ausgangslösung ausgeschieden und damit der Säuregehalt des Elektrolyten entsprechend erhöht, so wird der Elektrolyt in zwei Teile geteilt, von denen einer durch Auflösen von frischem Erz in demselben neutralisiert wird, worauf man ihn dem zweiten, stark sauren Teil des Elektrolyten zusetzt.
Die Verhältnisse werden dabei so gewählt, dass durch Vermischen des neutralisierten Teils mit dem anderen Teil des erschöpften Elektrolyten ein Elektrolyt von dem gewünschten Säuregehalt erhalten wird. Am vorteilhaftesten wird dabei so vorgegangen, dass man einen Teil des erschöpften Elektrolyten aus dem Bad in einen Behälter ablaufen lässt, worin die Neutralisierung mit frischem Zinkerz erfolgt ; hiebei kann so viel Zinkerz
EMI1.1
Anteil des Elektrolyten fördert man alsdann durch eine Pumpe und erforderlichenfalls durch ein Filter in einen höher gelegenen Vorratsbehälter, aus welchem das elektrolytische Bad aufgefüllt wird. Man erzielt auf diese Weise nicht nur die Reinigung des Elektrolyten von Eisen und festen Ve : unreinigungen, sondern vermeidet auch, dass die Pumpe säurehaltige Flüssigkeit zu fördern hat.
Hiedurch erreicht man einen praktisch ununterbrochenen Betrieb und vermeidet den Zusatz von frischer Säure bei jeder Beschickung bei Reinhaltung des Elektrolyten.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the electrolytic extraction of zinc from ores and other zinc-containing ones
Materials.
The present invention relates to a method for the electrowinning of zinc from ores and other zinc-containing materials, in which an electrolyte of high acid content, for example aqueous zinc sulfate solution of 240 g of zinc and 75 g of free acid per, by a current of high density, for example from 5 to 33 amps per i dm2, is electrolyzed.
This known method cannot be carried out continuously.
This fact, as well as the addition of free acid necessary with each loading, makes the process expensive and time-consuming.
According to the invention, this known method is suitable for uninterrupted operation and at the same time the addition of fresh acid to each charge is made unnecessary and, moreover, some other advantages are achieved in the following way:
If a charge is electrolyzed up to the advantageous limit, i.e. an amount of about 60 g zinc per liter has been eliminated from the starting solution and the acid content of the electrolyte is increased accordingly, the electrolyte is divided into two parts, one of which is dissolved by fresh ore is neutralized in the same, whereupon it is added to the second, strongly acidic part of the electrolyte.
The proportions are chosen so that by mixing the neutralized part with the other part of the exhausted electrolyte, an electrolyte with the desired acid content is obtained. It is most advantageous to proceed in such a way that part of the exhausted electrolyte is drained from the bath into a container, in which the neutralization takes place with fresh zinc ore; so much zinc ore can be used here
EMI1.1
Part of the electrolyte is then conveyed through a pump and, if necessary, through a filter into a higher-lying storage container, from which the electrolytic bath is filled. This not only achieves the cleaning of iron and solid impurities from the electrolyte, but also avoids the pump having to convey acidic liquids.
This achieves practically uninterrupted operation and avoids the addition of fresh acid with each loading while keeping the electrolyte clean.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT84706T | 1915-09-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT84706B true AT84706B (en) | 1921-07-11 |
Family
ID=3605731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT84706D AT84706B (en) | 1915-09-06 | 1915-09-06 | Process for the electrolytic extraction of zinc from ore and other zinc-containing materials. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT84706B (en) |
-
1915
- 1915-09-06 AT AT84706D patent/AT84706B/en active
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