DE684580C - Process for separating copper and other non-ferrous metals and their alloys from iron or steel from clad waste - Google Patents
Process for separating copper and other non-ferrous metals and their alloys from iron or steel from clad wasteInfo
- Publication number
- DE684580C DE684580C DEH152135D DEH0152135D DE684580C DE 684580 C DE684580 C DE 684580C DE H152135 D DEH152135 D DE H152135D DE H0152135 D DEH0152135 D DE H0152135D DE 684580 C DE684580 C DE 684580C
- Authority
- DE
- Germany
- Prior art keywords
- iron
- alloys
- steel
- ferrous metals
- waste
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
- C22B7/008—Wet processes by an alkaline or ammoniacal leaching
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
Verfahren zum Trennen von Kupfer und anderen Buntmetallen und ihren Legierungen von Eisen oder Stahl äus plattierten Abfällen Die weitgehende Verwendung von plattierten Metallen und Legierungen als Austauschwerkstoff für Kupfer, Messing u. dgl. bringt es mit sich, daß Abfälle plattierter Metalle und Legierungen in großem Umfang anfallen. Die Wiedergewinnung der Metalle aus diesen Abfällen macht Schwierigkeiten, da eine mechanische Trennung nicht möglich ist.Process for separating copper and other non-ferrous metals and their Alloys of iron or steel from clad scraps Widely used of clad metals and alloys as a substitute for copper, brass and the like entail that scraps of plated metals and alloys in large Scope. The recovery of metals from this waste creates difficulties since mechanical separation is not possible.
Man hat nun schon versucht, derartige Abfälle auf feuertechnischem Wege zu verarbeiten. Hierbei können zwar die Buntmetalle gewonnen werden, das Eisen geht aber in der Schlacke verloren. Weiterhin hat man versucht, die Trennung durch Glühen der Abfälle zu bewirken. Abgesehen von der hierfür erforderlichen langen Zeit ist die teilweise Oxydierung des Eisens unerwünscht. Auch hat man vorgeschlagen, die Trennung elektrolytisch vorzunehmen, und zwar das plattierte Gut als Anode zu schalten und das in ihm enthaltene Kupfer an einer Kupferkathode abzuscheiden, während die übrigen Buntmetalle in Lösung gehen. Diese Trennung ist- unvollständig und benötigt sehr viel Zeit, auch läßt es sich nicht immer vermeiden, daß auch Eisen gelöst und abgeschieden wird.Attempts have now been made to refuse this type of fire Ways to process. It is true that the non-ferrous metals, the iron, can be obtained here but is lost in the slag. Furthermore, attempts have been made to break through To cause the waste to glow. Apart from the length of time required for this The partial oxidation of iron is undesirable over time. It has also been suggested to make the separation electrolytically, namely to the plated material as an anode switch and deposit the copper contained in it on a copper cathode while the remaining non-ferrous metals go into solution. This separation is imperfect and needed a lot of time, and it cannot always be avoided that iron too is dissolved and is deposited.
Zu besseren Ergebnissen ist man gelangt durch Behandeln der plattierten Abfälle mit einer ammoniakalischen Lösung, wodurch man die wertvollen Metalle, wie Kupfer und Zink, in Lösung brachte. Um den Angriff der Lauge zu verstärken, hat man auch Luft eingeblasen.Better results have been obtained by treating the plated Waste containing an ammoniacal solution, which removes valuable metals such as Copper and zinc, brought into solution. To intensify the attack of the lye, has you also blown air.
Dieses Verfahren wird erfindungsgemäß dadurch wesentlich wirksamer gestaltet, daß unter Zusatz von Chlorkalk gearbeitet wird. Der bei der Arbeit entstehende Sauerstoff führt zu einem besonders heftigen Angriff der Lauge.According to the invention, this makes this method much more effective designed to work with the addition of chlorinated lime. The one created at work Oxygen leads to a particularly violent attack on the lye.
Bei Durchführung des neuen Verfahrens gehen die Buntmetalle, wie Kupfer, Zink o. dgl., in Lösung, während Eisen bzw. Stahl nicht angegriffen werden. Der gesamte Metallirihalt der Abfälle wird daher ohne Metallverlust wiedergewonnen. Das Lösungsmittel wird in bekannter Weise, zweckmäßig im Vakuumverdampfer, abdestilliert und dem Verfahren wieder zugeführt, während die gelösten Metalle als Rückstand verbleiben und in bekannter Weise weiterverarbeitet werden.When the new process is carried out, the non-ferrous metals, such as copper, Zinc or the like in solution, while iron or steel are not attacked. Of the The entire metal content of the waste is therefore recovered without any loss of metal. The solvent is distilled off in a known manner, expediently in a vacuum evaporator and fed back into the process while the dissolved metals remain as residue and further processed in a known manner.
Hat das Gut eine besonders große Dichte, wie man sie z. B. bei hartgewalzten Blechen antrifft, so empfiehlt es sich, das Gut aufzulociern, um den Angriff der Lauge zu erleichtern. Hierzu bedient man sich z. B. eines Glühverfahrens.Does the property have a particularly high density, as can be seen e.g. B. with hard-rolled If sheet metal is encountered, it is advisable to locate the goods in order to prevent the attack Lye to facilitate. For this one uses z. B. an annealing process.
Um den Angriff der Lauge weiter zu verstärken, ist eine gegenseitige Bewegung zwischen Lauge und Abfällen erwünscht. Diese Bewegung läßt sich bei gewöhnlichen Abfällen sehr leicht erzielen. Handelt sich es aber um ein Gut, dessen Teile Hohlräume besitzen, die sich mit der Lauge füllen, so ist die Erneuerung der Lauge in diesen Hohlräumen ohne weiteres nicht zu erreichen.To further intensify the attack of the lye is a mutual Movement between the lye and waste is desirable. This movement can be seen in ordinary Achieve waste very easily. But if it is a good, its parts have cavities which are filled with the lye, the renewal of the lye is in them Cavities cannot be reached without further ado.
Um ;den Laugenaustausch auch an den Innenflächen solcher Körper, wie z. B. Patronenhülsen, herbeizuführen, führt man die Laugung zweckmäßig in einer mit Einbauten versehenen Trommel durch. Diese Einbauten sind so gestaltet, daß sie die Körper bei der Drehbewegung der Trommel allmählich hochheben und so lange festhalten, daß die Lauge aus ihnen ausfließt, bevor sie herabfallen.To; the alkali exchange also on the inner surfaces of such bodies as z. B. cartridge cases to bring about, one leads the leaching expediently in a with internals provided drum. These internals are designed so that they Gradually lift the body up as the drum rotates and hold on to it for so long, that the liquor flows out of them before they fall.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH152135D DE684580C (en) | 1937-06-30 | 1937-06-30 | Process for separating copper and other non-ferrous metals and their alloys from iron or steel from clad waste |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH152135D DE684580C (en) | 1937-06-30 | 1937-06-30 | Process for separating copper and other non-ferrous metals and their alloys from iron or steel from clad waste |
Publications (1)
Publication Number | Publication Date |
---|---|
DE684580C true DE684580C (en) | 1939-12-01 |
Family
ID=7181338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH152135D Expired DE684580C (en) | 1937-06-30 | 1937-06-30 | Process for separating copper and other non-ferrous metals and their alloys from iron or steel from clad waste |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE684580C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0479326A1 (en) * | 1990-10-05 | 1992-04-08 | AK Steel Corporation | Alkaline leaching of galvanized steel scrap |
-
1937
- 1937-06-30 DE DEH152135D patent/DE684580C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0479326A1 (en) * | 1990-10-05 | 1992-04-08 | AK Steel Corporation | Alkaline leaching of galvanized steel scrap |
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