DE1080308B - Process for removing phosphorus from a copper melt - Google Patents
Process for removing phosphorus from a copper meltInfo
- Publication number
- DE1080308B DE1080308B DEO2230A DEO0002230A DE1080308B DE 1080308 B DE1080308 B DE 1080308B DE O2230 A DEO2230 A DE O2230A DE O0002230 A DEO0002230 A DE O0002230A DE 1080308 B DE1080308 B DE 1080308B
- Authority
- DE
- Germany
- Prior art keywords
- copper
- melt
- phosphorus
- excess
- free
- 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.)
- Pending
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 30
- 229910052802 copper Inorganic materials 0.000 title claims description 29
- 239000010949 copper Substances 0.000 title claims description 29
- 229910052698 phosphorus Inorganic materials 0.000 title claims description 13
- 239000011574 phosphorus Substances 0.000 title claims description 13
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims description 12
- 238000000034 method Methods 0.000 title claims description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 8
- 239000000155 melt Substances 0.000 claims description 7
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 5
- 239000005751 Copper oxide Substances 0.000 claims description 5
- 229910000431 copper oxide Inorganic materials 0.000 claims description 5
- 239000000292 calcium oxide Substances 0.000 claims description 4
- 235000012255 calcium oxide Nutrition 0.000 claims description 4
- 239000003792 electrolyte Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 2
- 235000011613 Pinus brutia Nutrition 0.000 claims description 2
- 241000018646 Pinus brutia Species 0.000 claims description 2
- 239000004071 soot Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 238000007670 refining Methods 0.000 description 4
- 238000007872 degassing Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000001506 calcium phosphate Substances 0.000 description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 description 2
- 235000011010 calcium phosphates Nutrition 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 2
- PGYDGBCATBINCB-UHFFFAOYSA-N 4-diethoxyphosphoryl-n,n-dimethylaniline Chemical compound CCOP(=O)(OCC)C1=CC=C(N(C)C)C=C1 PGYDGBCATBINCB-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000006009 Calcium phosphide Substances 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- -1 phosphorus compound Chemical class 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 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
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/006—Pyrometallurgy working up of molten copper, e.g. refining
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)
- Continuous Casting (AREA)
Description
DEUTSCHESGERMAN
Elektrolyt- und/oder sauberes Raffinatkupfer werden zur Herstellung von Kupferwalzplatten, -barren, -bolzen, -rohren oder anderem Kupferhalbzeug benutzt. Das Kupfer wird dabei im allgemeinen im Raffinierofen geschmolzen und die Schmelze einem oxydierenden und anschließenden reduzierenden Schmelzprozeß unterworfen, um die beim Einschmelzen von dem Bad aus dem Heizmittel aufgenommenen Gase zu entfernen. Das so gewonnene Kupfer ist kupferoxydulhaltig. Kufperoxydulhaltiges Kupfer läßt sich bekanntlich in einer ungeteilten Kokille nicht zum Strang vergießen.Electrolyte and / or clean raffinate copper are used to manufacture rolled copper plates, bars, bolts, tubes or other semi-finished copper products are used. The copper is generally used Refining furnace melted and the melt an oxidizing and then reducing Melting process subjected to the absorbed during the melting of the bath from the heating means Remove gases. The copper obtained in this way contains copper oxide. Kufperoxydulhaltiges copper leaves As is well known, in an undivided mold not shed to form a strand.
Es ist ferner bekannt, daß sich Kupferoxydul aus der Schmelze durch ein entgasendes Desoxydationsmittel, wie z. B. Phosphor, mit Sicherheit völlig ent- *5 fernen läßt, wenn der Schmelze das Desoxydationsmittel im Überschuß zugesetzt wird. Dadurch wird aber die ursprüngliche Leitfähigkeit des Kupfers in unzulässiger Weise beeinträchtigt.It is also known that copper oxide is extracted from the melt by a degassing deoxidizer, such as B. phosphorus, can be removed completely with certainty if the deoxidizing agent is added in excess to the melt. This will but the original conductivity of the copper is adversely affected.
Es ist außerdem bekannt, daß der Überschuß des Phosphors aus dem Kupfer dadurch zu entfernen ist, daß der Schmelze mit dem zur Desoxydation hinzugefügten Desoxydationsmittel ein zweiter Stoff hinzugefügt wird, der sich im flüssigen Kupfer löst und den vorhandenen Überschuß des Desoxydationsmittels bindet. Als solche Zusatzmittel sind Kalzium und andere Metalle bekannt, die als Metallphosphid bei der Erstarrung des Kupfers in ihm kristallisieren und daher im Kupfer verbleiben.It is also known that the excess of phosphorus can be removed from the copper by that a second substance is added to the melt with the deoxidizing agent added for deoxidation which dissolves in the liquid copper and the existing excess of the deoxidizer binds. As such additives, calcium and other metals are known to act as metal phosphide the solidification of the copper crystallize in it and therefore remain in the copper.
In der deutschen Patentschrift 1 030 038 ist ferner vorgeschlagen worden, bei der Kupferraffination ein raffiniertes Kupfer zu erzeugen, das weder einen Rest an Kupferoxydul noch an entgasenden Desoxydationsmitteln, wie beispielsweise Phosphor, noch Verbindungen des Desoxydationsmittels, wie beispielsweise Kaiziumphosphid, enthält. Zu dem Zweck wird das durch die Raffination sauerstoff- und gashaltig gewordene Kupfer durch einen Zusatz von Phosphor im Überschuß Sauerstoff- und gasfrei gemacht und der im Kupfer zurückgebliebene Rest an Phosphor dadurch aus dem Kupfer entfernt, daß die Kupferschmelze mit pulverisiertem, gebranntem Kalk durchwirbelt wird.In the German patent specification 1 030 038 is also it has been proposed to produce a refined copper in copper refining, which neither has a residue in copper oxide nor in degassing deoxidizing agents, such as phosphorus, nor compounds of the deoxidizer, such as calcium phosphide. To that end, this is done by the refining of oxygen and gas-containing copper by adding excess phosphorus Made oxygen and gas-free and the remainder of phosphorus left in the copper as a result removed from the copper so that the copper melt is swirled through with pulverized, quicklime.
Die Erfindung vermeidet das eingangs erwähnte umständliche Raffinierverfahren bei der Verarbeitung von Elektrolyt- und bzw. oder Raffinatkupfer. Erfindungsgemäß werden nämlich diese Kupfersorten in einem Ofen, ζ. B. Elektroofen oder in einem kohle-, koks-, gas- oder ölbeheizten Ofen, geschmolzen, der Schmelze anschließend Phosphor als Desoxydationsund Entgasungsmittel im Überschuß zur Entfernung des Kupferoxyduls und der Gase in bekannter Weise zugesetzt und der Phosphorüberschuß, wie im Hauptpatent 1 030 038 angegeben, durch pulverisierten, gebrannten Kalk verschlackt, der mit der Schmelze in Verfahren zur Entfernung des Phosphors aus einer KupferschmelzeThe invention avoids the awkward refining process mentioned at the beginning during processing of electrolyte and / or raffinate copper. According to the invention, these types of copper are namely in an oven, ζ. B. electric furnace or in a coal, coke, gas or oil-fired furnace, melted, the Then melt excess phosphorus as a deoxidizer and degassing agent for removal of the copper oxide and the gases added in a known manner and the excess of phosphorus, as in the main patent 1 030 038 specified, slagged by pulverized, quicklime, which with the melt in Process for removing phosphorus from a copper melt
Zusatz zum Patent 1 030 038Addition to patent 1 030 038
Anmelder:Applicant:
Osnabrücker Kupfer- und Drahtwerk,
Osnabrück, Klosterstr. 29Osnabrück copper and wire works,
Osnabrück, Klosterstr. 29
Dipl.-Ing. Ludwig KatteTbach, Osnabrück,
ist als Erfinder genannt wordenDipl.-Ing. Ludwig KatteTbach, Osnabrück,
has been named as the inventor
innige Berührung, insbesondere durch Umrühren, gebracht wird. Dabei bildet sich Kalziumphosphat als Schlacke.intimate contact, in particular by stirring, is brought. Calcium phosphate is formed as a Slag.
Die ursprüngliche elektrische Leitfähigkeit des Elektrolyt- und/oder Raffinatkupfers, die durch den Zusatz des Desoxydationsmittels herabgesetzt ist, wird erfindungsgemäß dadurch wiederhergestellt, daß der Überschuß des Desoxydationsmittels aus der Schmelze durch das Verrühren mit Kalkstaub herausgelöst und verschlackt wird.The original electrical conductivity of the electrolyte and / or raffinate copper, which is determined by the Addition of the deoxidizing agent is reduced, is restored according to the invention in that the excess deoxidizing agent is dissolved out of the melt by stirring with lime dust and is slagged.
Beispielsweise wird beim Schmelzen von Kathodenkupfer der in den Kathodenplatten anwesende Wasserstoff durch den Phosphorzusatz an Phosphor gebunden. Aus der dabei gebildeten Phosphorverbindung entsteht nach dem Zusatz von pulverisiertem, gebranntem Kalk Kalziumphosphat. Die bei diesem Verfahren gebildete Schlacke wird, wie üblich, abgezogen und die Badoberfläche durch eine Schutzdecke, beispielsweise trockenen Kienruß, zur Verhinderung der Oxydation des Bades abgedeckt. Darauf kann das Kupfer zweckmäßigerweise unter Schutzgas auch in einer ungeteilten Stranggußkokille vergossen werden.For example, when melting cathode copper the hydrogen present in the cathode plates is bound to phosphorus by the addition of phosphorus. The phosphorus compound formed is formed after the addition of pulverized, burnt Lime calcium phosphate. The slag formed in this process is, as usual, drawn off and the bath surface by a protective cover, for example dry pine soot, to prevent the Oxidation of the bath covered. The copper can then also be expediently in a protective gas be cast in an undivided continuous casting mold.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEO2230A DE1080308B (en) | 1952-01-16 | 1952-03-13 | Process for removing phosphorus from a copper melt |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEO2104A DE1030038B (en) | 1952-01-16 | 1952-01-16 | Process for removing phosphorus from deoxidized copper as well as semi-finished copper products produced by the process |
| DEO2230A DE1080308B (en) | 1952-01-16 | 1952-03-13 | Process for removing phosphorus from a copper melt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1080308B true DE1080308B (en) | 1960-04-21 |
Family
ID=25989261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEO2230A Pending DE1080308B (en) | 1952-01-16 | 1952-03-13 | Process for removing phosphorus from a copper melt |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1080308B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE441930C (en) * | 1923-03-25 | 1927-03-12 | Siemens & Halske Akt Ges | Deoxidation of copper and its alloys |
| DE629388C (en) * | 1934-10-21 | 1936-04-29 | Ver Deutsche Metallwerke Akt G | Process for the production of oxygen-free copper |
-
1952
- 1952-03-13 DE DEO2230A patent/DE1080308B/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE441930C (en) * | 1923-03-25 | 1927-03-12 | Siemens & Halske Akt Ges | Deoxidation of copper and its alloys |
| DE629388C (en) * | 1934-10-21 | 1936-04-29 | Ver Deutsche Metallwerke Akt G | Process for the production of oxygen-free copper |
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