DE422044C - Dezincification of chlorinated roasted gravel burns - Google Patents
Dezincification of chlorinated roasted gravel burnsInfo
- Publication number
- DE422044C DE422044C DESCH70993D DESC070993D DE422044C DE 422044 C DE422044 C DE 422044C DE SCH70993 D DESCH70993 D DE SCH70993D DE SC070993 D DESC070993 D DE SC070993D DE 422044 C DE422044 C DE 422044C
- Authority
- DE
- Germany
- Prior art keywords
- zinc
- lye
- roasted
- leaching
- rich
- 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.)
- Expired
Links
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
- C22B19/20—Obtaining zinc otherwise than by distilling
- C22B19/26—Refining solutions containing zinc values, e.g. obtained by leaching zinc ores
-
- 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
Description
Entzinkung von chlorierend gerösteten Kiesabbränden. Wenn man die
chlorierend gerösteten Abbrände mit Wasser auslaugt, so haben die einzelnen Laugen
beispielsweise folgende durchschnittliche Zusammensetzung:
Die dritte Lauge benutzt man als erstes Laugewasser einer neu zu laugenden Menge Röstgut und erzielt, wie durch zahlreiche Versuche nachgewiesen, daß der Zinkgehalt in dieser Lauge angereichert, dagegen der Su1-fatgehalt herabgesetzt wird. Man erzielt eine Lauge, welche ihrer Zusammensetzung nach der oben angegebenen ersten Lauge entspricht. Es ist von Vorteil, daß das Laugegut noch möglichst heiß ist, wenn das erste Laugewasis,er- (die dritte Lauge) aufgegeben wird.The third lye is used as the first lye water for a new lye Amount of roasted material and achieved, as shown by numerous tests, that the zinc content Enriched in this lye, on the other hand the su1-fat content is reduced. One achieves a lye whose composition corresponds to that of the first lye specified above is equivalent to. It is an advantage that the lye is still as hot as possible when the first lye, he (the third lye) is abandoned.
Die fünfte Lauge benutzt man als drittes Laugewasser einer neuen Laugeoperation.
Man hat also nur zwei getrennte Laugen zu verarbeiten, und zwar:
Die zinkarme Lauge enthält 8 g Zn und 84 g S03 pro Liter, das entspricht bei einer Laugenmenge von 2 ,cbm (gleich i o t Röstgut) = i6 kg Zn und 168 kg Sulfat. Diese Lauge wird in einem Rührwerk bei etwa go° C mit Kalkmilchlösung behandelt. Das Zink wird ausgefällt und gleichzeitig fällt eine dem Zink äquivalente- Menge CaS04 aus. Man erhält also einen Niederschlag, der aus 2n kg Zn0 und 33 bis 34 kg CaS04 (wasserfrei berechnet) besteht.The low-zinc lye contains 8 g Zn and 84 g S03 per liter, which corresponds to with an amount of lye of 2. cbm (equal to i o t of roasted material) = 16 kg of Zn and 168 kg of sulfate. This lye is treated with milk of lime solution in an agitator at about go ° C. The zinc is precipitated and at the same time an amount equivalent to the zinc falls CaS04 off. A precipitate is thus obtained that consists of 2n kg of Zn0 and 33 to 34 kg CaS04 (calculated anhydrous) exists.
Dieser Gips wird durch Glühen des Produktes in einem Drehrohrofen vollständig zersetzt. Man erhält also nach dem Glühen ein Produkt, das aus 2o kg Zn0 und 13 bis 14kg Ca0 besteht.This gypsum is made by annealing the product in a rotary kiln completely decomposed. So after glowing a product is obtained that consists of 20 kg Zn0 and 13 to 14kg Ca0.
Auch das- aus den zinkreichen Laugen gefällte Zn0 wird durch einen
Drehrohrofen gegeben und bei einer Temperatur von i2oo bis 1300° C geglüht. Man
erhält ein vollständig chlor- und sulfatfreies Produkt, das also besteht aus
Als weitere Verunreinigung tritt noch Fe203 hinzu, wenn man sich nicht die Mühe nehmen will, dasselbe durch Chlorkalk auszufällen.Fe203 is added as a further impurity, if one does not wants to take the trouble of precipitating the same thing with chlorinated lime.
Läßt man die Laugen über verzinkte Eisenblechabfälle laufen, so erhält man vollständig Pb- und Cd-freie Laugen und kann das erhaltene Zn0 auf reines metallisches Zink verhüttet werden.If you let the lye run over galvanized sheet iron scraps, you get completely Pb- and Cd-free alkalis and the Zn0 obtained can be converted to pure metallic Zinc to be smelted.
Das Verfahren ist auch zur Entkupferung von kupferhaltigen Abbränden u. dgl. anwendbar.The process is also used to remove copper from burnouts containing copper and the like applicable.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH70993D DE422044C (en) | 1924-07-15 | 1924-07-15 | Dezincification of chlorinated roasted gravel burns |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH70993D DE422044C (en) | 1924-07-15 | 1924-07-15 | Dezincification of chlorinated roasted gravel burns |
Publications (1)
Publication Number | Publication Date |
---|---|
DE422044C true DE422044C (en) | 1925-11-23 |
Family
ID=7440080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DESCH70993D Expired DE422044C (en) | 1924-07-15 | 1924-07-15 | Dezincification of chlorinated roasted gravel burns |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE422044C (en) |
-
1924
- 1924-07-15 DE DESCH70993D patent/DE422044C/en not_active Expired
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