DE2629275A1 - Gas permeable body - for treating molten metals contains a metal treating agent and substance which forms passages on heating (SW 9.5.77) - Google Patents

Gas permeable body - for treating molten metals contains a metal treating agent and substance which forms passages on heating (SW 9.5.77)

Info

Publication number
DE2629275A1
DE2629275A1 DE19762629275 DE2629275A DE2629275A1 DE 2629275 A1 DE2629275 A1 DE 2629275A1 DE 19762629275 DE19762629275 DE 19762629275 DE 2629275 A DE2629275 A DE 2629275A DE 2629275 A1 DE2629275 A1 DE 2629275A1
Authority
DE
Germany
Prior art keywords
carrier body
body according
substance
escape
heat
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.)
Ceased
Application number
DE19762629275
Other languages
German (de)
Inventor
Gammal Tarek Prof Dr Ing El
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GAMMAL, TAREK EL, PROF. DR.-ING., 5100 AACHEN, DE
Original Assignee
Foseco Trading AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Foseco Trading AG filed Critical Foseco Trading AG
Priority to DE19762629275 priority Critical patent/DE2629275A1/en
Priority to SE7611368A priority patent/SE7611368L/en
Priority to BR7606896A priority patent/BR7606896A/en
Priority to CA263,426A priority patent/CA1079529A/en
Priority to AU18757/76A priority patent/AU504073B2/en
Priority to JP51124362A priority patent/JPS5257010A/en
Priority to FR7631054A priority patent/FR2328050A1/en
Priority to GB42992/76A priority patent/GB1562818A/en
Publication of DE2629275A1 publication Critical patent/DE2629275A1/en
Ceased legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04Removing impurities by adding a treating agent
    • C21C7/064Dephosphorising; Desulfurising
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00Refining of pig-iron; Cast iron
    • C21C1/10Making spheroidal graphite cast-iron
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/10General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
    • C22B9/103Methods of introduction of solid or liquid refining or fluxing agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Abstract

Parent patent relates to a heat insulating gas permeable carrier for introducing inoculating agents into molten metal. To prevent sudden disintegration of the carrier in case of blockage, channels or passages are provided in the carrier body by incorporating an (in)organic, and/or synthetic substance which is volatile, and disintegrates with vol. redn. on heating. By providing channels or passages readily for the evolution or movement of the vapour or melt formed by the inoculating substance, the danger of explosion with health hazard is eliminated.

Description

"Trägerkörper zum Einbringen von Behandlungsmitteln in flüssige Metalle""Carrier body for introducing treatment agents into liquid metals"

Im Hauptpatent sind wärmeisolierende, gasdurchlässige Trägerkörper zum Einbringen von Behandlungsmitteln in flüssige Metalle beschrieben worden. Die Trägerkörper, die aus organischen und/oder anorgannischen faserigen Stoffen und Hilfsmitteln hergestellt sind, beinhalten die Reaktionsmittel. die faserigen, organischen Stoffe erhöhen die Wärmeisolierung des Körpers und fördern die Bildung von Hohlräumen und Kanülen, wodurch die gebildeten Dämpfe oder Schmelzen der Behandlungsmittel (z. B. Alkalimetalle, Erdalkalimetalle, Metalle der Seltenen Erden wie Ca, Mg, Al, Na, Ce oder deren Legierungen) aus dem Trägerkörper reguliert entweichen können.The main patent includes heat-insulating, gas-permeable support bodies has been described for introducing treatment agents into liquid metals. the Carrier bodies made of organic and / or inorganic fibrous materials and Auxiliaries are prepared, include the reactants. the fibrous, organic ones Fabrics increase the body's thermal insulation and promote the formation of cavities and cannulas, whereby the formed vapors or melts of the treatment agent (e.g. alkali metals, alkaline earth metals, rare earth metals such as Ca, Mg, Al, Na, Ce or their alloys) can escape in a regulated manner from the carrier body.

In dem Fall, daß die Beschaffenheit der Trägerkörper, z. B. Größe, Zusammensetzung oder Aufbau, nicht die gewünschten Ausströmungsbedingungen der Reaktionsmittel erfüllen, so könnte es zur Stauung der Dämpfe oder Schmelzen mit gleichzeitiger Drucksteigerung im Körperinneren kommen.In the event that the nature of the carrier body, e.g. B. size, Composition or structure, not the desired outflow conditions of the reactants meet so there could be congestion of vapors or melting with simultaneous Pressure increase inside the body.

Dadurch kann der Trägerkörper zerplatzen oder explodieren und die Arbeitsumgebung gefährden.As a result, the carrier body can burst or explode and the Endanger the working environment.

Die Erfindung hat es sich zur Aufgabe gemacht, diese Nachteile zu vermeiden, indem ein dreidimensionales, netzartiges Entgasungs- bzw.The invention has set itself the task of addressing these disadvantages avoid by using a three-dimensional, network-like degassing resp.

Druckausgleichsystem im Trägerkörper geschaffen wird. Erfindungsgemäß wird - je nach Beschaffenheit des Trägerkörpers - feine, kurze Faser und/oder dickere, lange zusammengebundene Stoffe, die in der Hitze mindestens unter Volumenabnahme zerfallen oder schrumpfen, im Trägerkörper eingebettet.Pressure equalization system is created in the carrier body. According to the invention - depending on the nature of the carrier body - fine, short fibers and / or thicker, Fabrics that have been tied together for a long time and that at least decrease in volume in the heat disintegrate or shrink, embedded in the carrier body.

Bei relativ kleinen Trägerkörpern und/oder die nach. der Skelettbauweise hergestellt sind, können die skelettbildenden Fasern - insbesondere nach deren Zerfall bzw. Schrumpfung in der Hitze - die Aufgabe für die Bildung der Entweichungskanäle übernehmen. Sind die Trägerkörper dagegen groß und massiv gebaut (mit oder ohne faserige Stoffe, verdichtete, körnige Materialien), so müssen im Trgerkörper.zusätzlich Entweichungswege geschaffen werden, indem - je nach Bedarf - die Länge, Dicke und Menge der hohlraumbildenden Stoffe berücksichtigt werden. Eine Mischung aus feinen und groben hohlraumbildenden Stoffen, z. B. Papierfaser und gestückelte Kordel oder ähnlichen Stoffen, kann vorzugsweise verwendet werden, so daß ein gestuftes, verzweigtes Entweichungssystem geschaffen wird. Die in dem Poreninneren gebildeten Dämpfe oder Schmelzen strömen in diesem Fall zunächst in die naheliegenden kleinen Primärkanäle und anschließend in die großen Sammelkanäle, die das Ausströmen der Dämpfe aus dem Trägerkörper erleichtern.With relatively small support bodies and / or the after. the skeleton construction are produced, the skeleton-forming fibers - especially after their disintegration or shrinkage in the heat - the job for that Formation of Take over escape channels. On the other hand, if the carrier bodies are large and solidly built (with or without fibrous materials, compacted, granular materials), so must im Trgerkkörper.Additional escape routes are created by - as required - the length, thickness and quantity of the void-forming substances are taken into account. A mixture of fine and coarse cavity-forming substances, e.g. B. paper fiber and piece of cord or similar material, can preferably be used so that a stepped, branched escape system is created. The one in that In this case, vapors or melts formed inside the pores initially flow into the nearby small primary ducts and then into the large collecting ducts, which make it easier for the vapors to escape from the carrier body.

Zur Schaffung der Entweichungswege bzw. -kanäle werden erfindungsgemäß den Ausgangsmaterialien organische, anorganische oder synthetisch= hergestellte Stoffe zugegeben, die in der Hitze zerfallen oder zumindest schrumpfen, z. B. Papier, Papierfaser, Baumwolle, Holzspäne, Sägemehl, Holzrinde, Stroh, Leinen, verkohltes Holz, Pflanzenteile, Wolle, Asbest oder Kunststoff, wie Nylon und Perlon. Diese Stoffe können je nach Bedarf in der geeigneten Form, Länge und Dicke verwendet werden.In order to create the escape routes or channels, according to the invention the starting materials organic, inorganic or synthetic = manufactured Added substances that disintegrate or at least shrink in the heat, e.g. B. paper, Paper fiber, cotton, wood shavings, sawdust, wood bark, straw, linen, charred Wood, parts of plants, wool, asbestos or plastic such as nylon and perlon. These Fabrics can be used in the appropriate shape, length and thickness as needed.

Sie können z. B. faserförmig, gebündelt, gefilzt, geflochten, gewebt, gedreht bzw. gerippt oder in irgendeiner anderen Form vorliegen. Es ist auch möglich, daß zur Sicherung der Entweichungswege Schläuche oder Röhren mit verschiedenen Durchmessern und Längen im Trägerkörper eingebettet werden. Diese Schläuche oder Röhren können organischer, anorganischer oder synthetischer Herkunft sein, die vorzugsweise in der Hitze desintägrieren, so daß eine dirkete Verbindung zwischen den inneren Kanälen und der Masse des Trägerkörpers zustande kommen kann. Perforierte Rohre oder Schläuche aus Metallen oder Feuerfestmaterialien können auch für diesen Zweck eingesetzt werden.You can e.g. B. fibrous, bundled, felted, braided, woven, rotated or ribbed or in any other form. It is also possible, that to secure the escape routes hoses or tubes with different diameters and lengths are embedded in the carrier body. These hoses or tubes can of organic, inorganic or synthetic origin, preferably in disintegrate the heat so that a direct connection between the inner channels and the mass of the carrier body can come about. Perforated pipes or hoses Made of metals or refractories can also be used for this purpose.

Ein Zerfall des Trägerkörpers bleibt unschädlich, so lange sich dieser Prozeß langsam und von außen nach innen vollzieht. Sollte der Zerfall des Körpers durch dessen Beschaffenheit spontan vor sich gegen, so müssen zusätzlich Maßnahmen getroffen werden, um dessen Festigkeit zu erhöhen. Dies kann erreicht werden, indem die Trägerkörper mit Verstärkungseinlagen versehen werden. Die Verstärkungseinlagen können vorzugsweise aus in der Hitze beständigen Stoffen, z. B. hochschmelzende Metalle oder Legierungen oder Asbest, Faser, Wolle, Späne, Drähte, Rohre oder Platten - die in irgendeiner Form vorliegen können -hergestellt werden.A disintegration of the carrier body remains harmless as long as it is Process slowly and from the outside in. Should the disintegration of the body by its nature spontaneously in front of you, so need in addition Measures are taken to increase its strength. This can be achieved by providing the support bodies with reinforcement inserts. The reinforcement inserts can preferably be made of materials resistant to heat, e.g. B. high melting point Metals or alloys or asbestos, fiber, wool, shavings, wires, pipes or plates - which can be in any form.

Claims (1)

Anspriiche "Trägerkörper zum Einbringen von Behandlungsmitteln in flüssige Metalle" Anspruch 1) Trägerkörper zum Einbringen von Reaktionsstoffen in flüssige Metalle oder Legierungen d a d u r c h g e -k e n n z e i c h n e t , daß sie zur Bildung von Entweichungskanälen und -wegen Zusätze aus organischen oder anorganischen und/oder synthetischen Stoffen (entweichungsbildende Stoffe), die in der Hitze zerfallen oder zumindest unter Volumenabnahme des integrieren und freie Wege schaffen, beinhalten. Claims "carrier body for introducing treatment agents into liquid metals "claim 1) carrier body for introducing reactants into liquid metals or alloys denote that they to the formation of escape channels and paths additives from organic or inorganic and / or synthetic substances (substances that cause escape), the disintegrate in the heat or at least with a decrease in volume of the integrate and free Create, include. Anspruch 2) Trägerkörper nach Anspruch 1 d a d u r c h g e k e n n -z e i c h n e t , daß die Entweichungswege bildenden Stoffe faserförmig und/oder mechanisch oder chemisch zusammengebunden, z. B. gebündelt, verfilzt, gedreht, gewebt oder geflochten, vorliegen.Claim 2) carrier body according to claim 1 d a d u r c h g e k e n n -z e i c h n e t that the substances forming the escape routes are fibrous and / or mechanically or chemically bound together, e.g. B. bundled, matted, twisted, woven or braided. Anspruch 3) Trägerkörper nach Anspruch 1 - 2 d a d u r c h g e -k e n n z e i c h n e t , daß die Entweichungswege durch das Einbetten von Röhren und Schläuchen, die in der Hitze zumindest zum Teil-desintegrieren, geschaffen werden können.Claim 3) support body according to claim 1 - 2 d a d u r c h g e -k Note that the escape routes are through the embedding of pipes and hoses that at least partially disintegrate in the heat are created can. Anspruch 4) Trägerkörper nach Anspruch 1 - 3 d a d u r c h g e -k e n n z e i c h n e t , daß die Röhren oder Schläuche aus Feuerfestmaterialien und perforiert sind.Claim 4) carrier body according to claim 1 - 3 d a d u r c h g e -k It is noted that the tubes or hoses are made of refractory materials and are perforated. Anspruch 5) Trägerkörper nach Anspruch 1 - 4 d a d u r c h g e -k e n n z e i c h n e t , daß sie zur Erhöhung der Festigkeit Verstärkungseinlagen beinhalten.Claim 5) carrier body according to claim 1-4 d a d u r c h g e -k It is noted that they use reinforcement inserts to increase strength include. Anspruch 6) Trägerkörper nach Anspruch 1 - 5 d a d u r c h g e -k e n n z e i c h n e t , daß die Verstärkungseinlagen aus in der Hitze beständigen Materialien, z. 8. aus hochschmelzenden Metallen oder Metalllegierungen, Asbest oder feuerfesten Fasern, hergestellt sind.Claim 6) carrier body according to claim 1-5 d a d u r c h g e -k It is noted that the reinforcement inserts are resistant to heat Materials, e.g. 8. Made of refractory metals or metal alloys, asbestos or refractory fibers.
DE19762629275 1975-10-15 1976-06-30 Gas permeable body - for treating molten metals contains a metal treating agent and substance which forms passages on heating (SW 9.5.77) Ceased DE2629275A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE19762629275 DE2629275A1 (en) 1976-06-30 1976-06-30 Gas permeable body - for treating molten metals contains a metal treating agent and substance which forms passages on heating (SW 9.5.77)
SE7611368A SE7611368L (en) 1975-10-15 1976-10-13 CARRIER BODY FOR INFORMATION OF REACTIVITY IN METAL MELTOR
BR7606896A BR7606896A (en) 1975-10-15 1976-10-14 CARRYING ELEMENT FOR INTRODUCTION OF REACTIVE AGENTS IN METAL FUSES
CA263,426A CA1079529A (en) 1975-10-15 1976-10-14 Treatment body for the introduction of treatment agents into molten metals
AU18757/76A AU504073B2 (en) 1975-10-15 1976-10-15 A carrier body for abiding a treating agent to morten metal
JP51124362A JPS5257010A (en) 1975-10-15 1976-10-15 Reactor carrier for molten metal
FR7631054A FR2328050A1 (en) 1975-10-15 1976-10-15 SUPPORT BLOCK FOR THE INTRODUCTION OF REAGENTS IN MELTED METALS
GB42992/76A GB1562818A (en) 1975-10-15 1976-10-15 Carrier for introducing vapourising reactants into a metal melt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762629275 DE2629275A1 (en) 1976-06-30 1976-06-30 Gas permeable body - for treating molten metals contains a metal treating agent and substance which forms passages on heating (SW 9.5.77)

Publications (1)

Publication Number Publication Date
DE2629275A1 true DE2629275A1 (en) 1978-01-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19762629275 Ceased DE2629275A1 (en) 1975-10-15 1976-06-30 Gas permeable body - for treating molten metals contains a metal treating agent and substance which forms passages on heating (SW 9.5.77)

Country Status (1)

Country Link
DE (1) DE2629275A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114816A1 (en) * 1990-05-28 1991-12-05 Tokai Carbon Kk METHOD FOR REMOVING A FIBER REINFORCED ALUMINUM ALLOY COMPOSITE MATERIAL

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114816A1 (en) * 1990-05-28 1991-12-05 Tokai Carbon Kk METHOD FOR REMOVING A FIBER REINFORCED ALUMINUM ALLOY COMPOSITE MATERIAL

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