DE3332796C1 - Process for refining antimony-containing lead melts with supply of oxygen-enriched air - Google Patents

Process for refining antimony-containing lead melts with supply of oxygen-enriched air

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Publication number
DE3332796C1
DE3332796C1 DE19833332796 DE3332796A DE3332796C1 DE 3332796 C1 DE3332796 C1 DE 3332796C1 DE 19833332796 DE19833332796 DE 19833332796 DE 3332796 A DE3332796 A DE 3332796A DE 3332796 C1 DE3332796 C1 DE 3332796C1
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Germany
Prior art keywords
oxygen
refining
antimony
lead
boiler
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Expired
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DE19833332796
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German (de)
Inventor
Josef Dr.-Ing. 8000 München Blanderer
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Individual
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Individual
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Priority to DE19833332796 priority Critical patent/DE3332796C1/en
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Publication of DE3332796C1 publication Critical patent/DE3332796C1/en
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Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B13/00Obtaining lead
    • C22B13/06Refining

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  • 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)

Abstract

A process for refining antimony-containing lead melts is characterised in that the air supplied is enriched with oxygen. The conventional lead-refining processes have an upper output limit which is given essentially by the surface area of the ovens or vessels. The limit can be exceeded by adding oxygen to the blowing air. The conditions which allow risk-free and economical introduction of the oxygen are defined. Using oxygen, lead-refining in the vessel can compete with the existing large plants.

Description

An Abstrich wurden 490 kg gewogen, entsprechend einem Antimongehalt von 35,5%.The smear weighed 490 kg, corresponding to an antimony content of 35.5%.

Claims (3)

Patentanspruch: Verfahren zur Raffination von antimonhaltigen Bleischmelzen bei Temperaturen von 630-650"C, unter Rühren der Schmelze, Zugabe von kaustischem Alkali und Zufuhr von Luft, d du rch g e -k e n n z ei eh n e t, daß in die zugeführte Luft Sauerstoff eingedüst wird, und durch Regulierung der eingedüsten Sauerstoffmenge die erforderliche Behandlungstemperatur der Bleischmelze eingehalten wird.Claim: Process for refining lead melts containing antimony at temperatures of 630-650 "C, while stirring the melt, adding caustic Alkali and supply of air, which you can see that in the supplied Air is injected with oxygen, and by regulating the amount of oxygen injected the required treatment temperature of the lead melt is maintained. Der herkömmliche Raffinierofen hängt in seiner Oxidationsleistung von der über die Badoberfläche und die Blasrohre zugeführten Luft ab. The conventional refining furnace depends on its oxidation performance from the air supplied via the bath surface and the blowpipes. Die Oberfläche des Ofens ist eine unveränderliche Größe. Die eingeblasene Luft ist in ihrer Menge durch die Korrosion der Seitenwände bei zu starker Badbewegung begrenzt. The surface of the furnace is an invariable quantity. The blown Air is in its quantity due to the corrosion of the side walls when the bath is too active limited. Laut Literatur werden 3-4kg Antimon pro Quadratmeter Badoberfläche und Stunde oxidiert. Bei Arbeit mit Sumpf können maximal 10 kg erreicht werden. According to literature, 3-4kg of antimony per square meter of bath surface are required and hour oxidized. When working with sump, a maximum of 10 kg can be achieved. Ähnliche Verhältnisse bestehen bei den Kesselverfahren. Similar relationships exist with the boiler processes. Irt dJ?E-PS 30 48 680 wird ein Verfahren zur RaffinatipxnPvòn..antimon.4altigen Bleischmelzen im Kessel beiXè-mperåturen -von 63=650"C unter Rühren der Schmelze, Zugabe-von käustischem Alkali und Zufuhr von Luft beschrieben. Irt dJ? E-PS 30 48 680 is a process for RaffinatipxnPvòn..antimon.4altigen Lead melting in the boiler at Xè-mperåturen -of 63 = 650 "C while stirring the melt, Addition of caustic alkali and supply of air are described. Bei diesem Verfahren wird zwar die wirksame Oberfläche durch die Rührwirkung vergrößert, aber die eingeblasene Luftmenge findet eine Grenze in der entstehenden Turbulenz der Badfläche, welche zum Hochschleudern des Metalls und zu beginnenden Verdampfungsverlusten führt. In this process, although the effective surface is through the The stirring effect is increased, but the amount of air blown in has a limit resulting turbulence of the bath surface, which causes the metal to be thrown up and leads to incipient evaporation losses. In der Praxis werden bis zu 10 kg Antimon pro m2/h oxidiert. Damit ist aber die quantitative Leistungsobergrenze des Verfahrens erreicht. In practice, up to 10 kg of antimony per m2 / h are oxidized. In order to however, the quantitative upper limit of the process has been reached. Soll die Raffination von antimonhaltigen Bleischmelzen im großen Maßstab in Bleihütten erfolgen, dann muß im gegebenen Rahmen mehr Antimon oxidiert werden. Should the refining of antimony-containing lead melts on a large scale Scale in lead smelters, then more antimony must be oxidized within the given framework will. Der Anmeldung liegt daher die Aufgabe zugrunde, das bekannte Verfahren zur Raffination von Bleischmelzen so zu verbessern, daß das Antimon wirkungsvoller oxidiert wird. The application is therefore based on the task of the known method for refining lead melts so that the antimony is more effective is oxidized. Die gestellte Aufgabe wird gelöst durch ein Verfahren mit kennzeichnenden Merkmalen des Patentanspruchs. The problem posed is achieved by a method with characterizing Features of the claim. Der Vorschlag, mit Sauerstoff die Bleiraffination zu forcieren, ist nicht neu, aber im Ofen hat der Sauerstoff den an sich schon aggressiven Abstrich überhitzt und im Kessel waren Leistungssteigerungen mit der Gefährdung des Kessels verbunden. The proposal to force lead refining with oxygen is not new, but in the furnace the oxygen has the already aggressive smear overheated and in the boiler there were increases in performance with the risk to the boiler tied together. Das Problem der Verwendung von Sauerstoff in der Bleiraffination ist offensichtlich die Beherrschung der auftretenden Temperat tircu und erzeugten Wärmcmengen, Bei der Raffination im Kessel hat es sich als notwendig erwiesen: 1. Die außerordentlich große Wärmeentwicklung der reinen Sauerstoff-Metall-Reaktion zu vermeiden, indem man den Sauerstoff in den Luftstrom zur Raffination je nach Bedarf eindüst, und so die Verbrennung regulierbar macht. The problem of using oxygen in lead refining is obviously the mastery of the occurring temperat tircu and generated Amount of heat, when refining in the boiler it has been found necessary: 1. The extraordinarily large amount of heat generated by the pure oxygen-metal reaction avoid putting the oxygen in the air stream Refining as needed and makes the combustion controllable. 2. Die zwangsläufig auftretenden, vor den Blasrohren sich anhäufenden Hitzezonen müssen durch ein Rührwerk erfaßt und die Wärme auf den ganzen Kessel verteilt werden.2. The inevitable, accumulating in front of the blowpipes Heat zones must be captured by an agitator and the heat applied to the whole boiler be distributed. 3. Durch Regulieren der Sauerstoffzufuhr und wenn nötig, Kühlung des Kessels von außen, ist dafür zu sorgen, daß 650"C eingehalten werden, und so die Bildung von flüssigem Abstrich vermieden wird.3. By regulating the oxygen supply and, if necessary, cooling the Boiler from the outside, care must be taken that 650 "C are maintained, and so the Formation of liquid smear is avoided. Dadurch, daß der Raffinationsverlauf praktisch am Sauerstoffventil gesteuert wird, wechselt natürlich der Sauerstoffgehalt der Sauerstoff-Luft-Mischung und damit die jeweilige Oxidation der Metalle, die wiederum Raffinationsgeschwindigkeit und Leistung bestimmt. Because the refining process is practically at the oxygen valve is controlled, of course, the oxygen content of the oxygen-air mixture changes and thus the respective oxidation of the metals, which in turn affects the rate of refining and performance determined. Durch die vorgeschlagenen Maßnahmen wird die Leistung der Bleiraffination weitgehend von der Fläche des Ofens, bzw. Kessels unabhängig und erlaubt eine gefahrlose und regulierbare Vergrößerung der Raffinationsleistung.The proposed measures will improve the performance of lead refining largely independent of the area of the furnace or boiler and allows safe and adjustable increase in refining capacity. Als wesentlicher Vorteil der Anwendung des Sauerstoffs hat sich die Erhöhung des Antimongehaltes im Abstrich erwiesen. The application of oxygen has proven to be a major advantage Proven increase in the antimony content in the smear. Anwendungsbeispiel 25 800 kg entkupfertes und entzinntes Altblei mit 0,67% Antimon wurden im Kessel auf 630"C hochgeheizt und über zwei Eisenrohre Luft eingeblasen. In die Gebläseluft wurde mit 6 bar Sauerstoff eingedüst. Application example 25 800 kg decoppered and tinned waste lead with 0.67% antimony were heated in the boiler to 630 "C and over two iron pipes Air blown in. 6 bar oxygen was injected into the fan air. Gleichzeitig wurde ein starkes Rührwerk betätigt.At the same time a powerful agitator was activated. Von Beginn an wurde Ätznatron in kleinen Portionen zugegeben.From the beginning, caustic soda was added in small portions. Nach 180 Minuten zeigte eine Probe, daß das Antimon entfernt war.After 180 minutes a sample showed that the antimony was removed. Die Endtemperatur war 650" C.The final temperature was 650 "C. Der Sauerstoffverbrauch betrug 3 m3.The oxygen consumption was 3 m3.
DE19833332796 1983-07-25 1983-07-25 Process for refining antimony-containing lead melts with supply of oxygen-enriched air Expired DE3332796C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19833332796 DE3332796C1 (en) 1983-07-25 1983-07-25 Process for refining antimony-containing lead melts with supply of oxygen-enriched air

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Application Number Priority Date Filing Date Title
DE19833332796 DE3332796C1 (en) 1983-07-25 1983-07-25 Process for refining antimony-containing lead melts with supply of oxygen-enriched air

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DE3332796C1 true DE3332796C1 (en) 1984-06-28

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3831898A1 (en) * 1988-09-20 1990-03-29 Preussag Boliden Blei Gmbh METHOD AND DEVICE FOR REMOVING ARSEN, TIN AND ANTIMONE FROM WORK LEAD WITH OXYGEN
EP0633324A1 (en) * 1993-07-08 1995-01-11 Messer Griesheim Gmbh Process and device for the removal of tin, arsenic and antimony from molten lead

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3048680C2 (en) * 1979-12-28 1988-10-20 Institut Francais Du Petrole, Rueil-Malmaison, Hauts-De-Seine, Fr

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3048680C2 (en) * 1979-12-28 1988-10-20 Institut Francais Du Petrole, Rueil-Malmaison, Hauts-De-Seine, Fr

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3831898A1 (en) * 1988-09-20 1990-03-29 Preussag Boliden Blei Gmbh METHOD AND DEVICE FOR REMOVING ARSEN, TIN AND ANTIMONE FROM WORK LEAD WITH OXYGEN
EP0438622A1 (en) * 1988-09-20 1991-07-31 Metaleurop Weser Blei Gmbh Method and apparatus for removing arsenic, tin and antimony from crude lead.
EP0633324A1 (en) * 1993-07-08 1995-01-11 Messer Griesheim Gmbh Process and device for the removal of tin, arsenic and antimony from molten lead
DE4322782A1 (en) * 1993-07-08 1995-01-12 Messer Griesheim Gmbh Process for removing tin, arsenic and antimony from molten lead

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