DE1408841B2 - Device for generating a solid particle-gas suspension to be introduced into a metal melt - Google Patents

Device for generating a solid particle-gas suspension to be introduced into a metal melt

Info

Publication number
DE1408841B2
DE1408841B2 DE19601408841 DE1408841A DE1408841B2 DE 1408841 B2 DE1408841 B2 DE 1408841B2 DE 19601408841 DE19601408841 DE 19601408841 DE 1408841 A DE1408841 A DE 1408841A DE 1408841 B2 DE1408841 B2 DE 1408841B2
Authority
DE
Germany
Prior art keywords
suspension
solid particle
chamber
gas
generating
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
Application number
DE19601408841
Other languages
German (de)
Other versions
DE1408841A1 (en
Inventor
Emile Alfred Hanne Paris Wiame
Original Assignee
Eugene Goffart & Cie., Charleroi (Belgien)
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 Eugene Goffart & Cie., Charleroi (Belgien) filed Critical Eugene Goffart & Cie., Charleroi (Belgien)
Publication of DE1408841A1 publication Critical patent/DE1408841A1/en
Publication of DE1408841B2 publication Critical patent/DE1408841B2/en
Pending 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
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28Manufacture of steel in the converter
    • C21C5/30Regulating or controlling the blowing
    • C21C5/32Blowing from above
    • 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
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52Manufacture of steel in electric furnaces
    • C21C5/5294General arrangement or layout of the electric melt shop
    • 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
    • C21C7/0037Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Description

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Die Erfindung bezieht sich auf eine Vorrichtung zur Erzeugung einer in eine Metallschmelze einzuführenden FeststofEteilchen-Gas-Suspension, mit einem in einer Mischkammer befindlichen Einblaskopf, dem die Feststoffteilchen von einem Behälter aus zugeführt werden, und mit einer der Mischkammer nachgeordneten Suspensionskammer.The invention relates to a device for generating a to be introduced into a metal melt Solid particle gas suspension, with an injection head located in a mixing chamber, to which the solid particles are supplied from a container, and with one of the mixing chambers downstream suspension chamber.

Eine solche Vorrichtung ist bekannt. Hierbei dient die Suspensionskammer der verbesserten Durchmischung von Feststoffteilchen und Gas. Andererseits bildet die Suspensionskammer jedoch ein um so größeres Strömungshindernis für die Feststoffteilchen-Gas-Suspension, je stärker sie diese durchmischt. Daher wird bei der bekannten Vorrichtung für die Suspensionskammer eine Düsenform oder eine sich kegelförmig erweiternde Form gewählt, die nur ein Kompromiß aus den Forderungen nach guter Durchmischung und geringem Strömungswiderstand ist.Such a device is known. Here, the suspension chamber is used for the improved Mixing of solid particles and gas. On the other hand, however, forms the suspension chamber the greater the obstacle to the flow of the solid particle-gas suspension, the stronger it is mixed. Therefore, in the known apparatus, the suspension chamber becomes a nozzle shape or a conically widening shape was chosen, which is only a compromise between the requirements after thorough mixing and low flow resistance.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zur Erzeugung einer in eine Metallschmelze einzuführenden Feststoffteilchen-Gas-Suspension so auszubilden, daß zur Erreichung einer hohen Arbeitsgeschwindigkeit die Suspension unter voller Aufrechterhaltung ihrer Gleichmäßigkeit mit hoher Geschwindigkeit aus der Suspensionskammer abbefördert wird.The invention is based on the object of a device for generating a molten metal to be introduced solid particles-gas suspension in such a way that to achieve a high working speed with the suspension while fully maintaining its uniformity is conveyed away from the suspension chamber at high speed.

Die Aufgabe wird gemäß der Erfindung bei einer Vorrichtung der eingangs genannten Art dadurch gelöst, daß sich an die Suspensionskammer ein Druckgasinjektor zur beschleunigten Abgabe der Feststoffteilchen-Gas-Suspension an die Förderleitung anschließt.The object is achieved according to the invention with a device of the type mentioned at the beginning solved that a pressurized gas injector for the accelerated delivery of the suspension chamber Solid particle gas suspension connects to the delivery line.

Bei der neuen Vorrichtung wird mittels des Druckgasinjektors eine nachträgliche Beschleunigung der Feststoffteilchen-Gas-Suspension erzielt, die es gestattet, der Suspensionskammer eine erhöhte Arbeitsgeschwindigkeit zu vermitteln. Weiter kann die Suspensionskammer gegenüber den seitherigen Ausführungen eine strömungsungünstigere, dabei aber hinsichtlich der Verwirbelung und Durchmischung der Feststoffteilchen-Gas-Suspension günstigere Raumform haben. Die durch das Zusammenwirken der Suspensionskammer mit dem Druckgasinjektor verbesserte gleichmäßige und schnelle Abführung der Feststoffteilchen-Gas-Suspension erlaubt es auch, die Feststoffteilchen aus dem Behälter der Mischkammer in einem relativ kompakten Strom zuzuführen, während seither vorzugsweise in dem Behälter ein Fließbett der nachzuführenden Feststoffteilchen aufrechterhalten wurde, was mit erheblichem Aufwand verbunden ist.With the new device, a subsequent acceleration is achieved by means of the pressurized gas injector the solid particle-gas suspension achieved, which allows the suspension chamber an increased To convey work speed. The suspension chamber can also be compared to the previous Versions less favorable to the flow, but in terms of turbulence and mixing the solid particle-gas suspension have a more favorable spatial shape. The through cooperation the suspension chamber with the pressurized gas injector improved even and fast Discharge of the particulate matter gas suspension also allows the particulate matter to be removed from the container to be supplied to the mixing chamber in a relatively compact stream, while since then preferably a fluidized bed of the solid particles to be fed in was maintained in the container, which with considerable effort is involved.

Die Erfindung wird im folgenden an Hand der Zeichnung näher erläutert, in der ein Ausführungsbeispiel dargestellt ist. The invention is explained in more detail below with reference to the drawing, in which an exemplary embodiment is shown.

Aus einem nur ausschnittsweise dargestellten Behälter 2 mit trichterförmigem Boden wird einer Mischkammer 24 ein Strom von Feststoffteilchen zugeführt, dessen Menge mittels eines an einem Handrad 26 verstellbaren Ventiltellers 25 regulierbar ist. In der Mischkammer 24 befindet sich ein Einblaskopf 29, der Teil eines an die Leitung 38 angeschlossenen, abnehmbaren Injektors 28 ist, dem ein Gas — Preßluft oder ein inertes Gas — mit regelbarem Druck zugeführt wird. Bevor die Feststoffteilchen von dem Gasstrom des Einblaskopfs 29 mitgerissen werden, werden sie an einem Ablenkblech 27, das unter 45° geneigte Bohrungen aufweist, bereits geringfügig in die Förderrichtung umgelenkt.A container 2 with a funnel-shaped bottom, shown only in part, becomes one A flow of solid particles is supplied to the mixing chamber 24, the amount of which can be regulated by means of a valve disk 25 which can be adjusted on a handwheel 26. In the mixing chamber 24 there is an injection head 29, which is part of a pipe 38 connected to removable injector 28 is to which a gas - compressed air or an inert gas - with adjustable Pressure is applied. Before the solid particles are entrained by the gas flow from the injection head 29 are, they are on a baffle 27, which has holes inclined at 45 °, already slightly deflected in the conveying direction.

An die Mischkammer 24 schließt sich eine Suspensionskammer 30 an, in der die noch inhomogene Mischung zu einer homogenen Feststoffteilchen-Gas-Suspension vermischt wird.The mixing chamber 24 is followed by a suspension chamber 30 in which the still inhomogeneous Mixture is mixed into a homogeneous solid particle gas suspension.

An die Suspensionskammer 30 schließt sich ein aus einer Zerstäuberkammer 31 und einer Gaszuleitung 32 bestehender Druckgasinjektor an, der die Feststoffteilchen-Gas-Suspension gegenüber deren Geschwindigkeit in der Mischkammer 24 stark beschleunigt und einen in der Suspensionskammer 30 eingetretenen Druckabfall ausgleicht. Aus der Zerstäuberkammer 31 gelangt die Feststoffteilchen-Gas-Suspension mit hoher Geschwindigkeit in eine Förderleitung 34, mittels derer sie einer Metallschmelze zugeführt wird.The suspension chamber 30 is followed by a pressure gas injector consisting of an atomizer chamber 31 and a gas supply line 32, which the Solid particle-gas suspension is greatly accelerated compared to its speed in the mixing chamber 24 and compensates for a pressure drop that has occurred in the suspension chamber 30. The solid particle-gas suspension passes from the atomizer chamber 31 at high speed in a conveying line 34, by means of which they a molten metal is fed.

Claims (1)

Patentanspruch:Claim: Vorrichtung zur Erzeugung einer in eine Metallschmelze einzuführenden Feststoffteilchen-Gas-Suspension, mit einem in einer Mischkammer befindlichen Einblaskopf, dem die Feststoffteilchen von einem Behälter aus zugeführt werden, und mit einer der Mischkammer nachgeordneten Suspensionskammer, dadurch -gekennzeichnet, daß sich an die Suspensionskammer (30) ein Druckgasinjektor (31, 32) zur beschleunigten Abgabe der Feststoffteilchen-Gas-Suspension an die Förderleitung (34) anschließt.Device for generating a solid particle-gas suspension to be introduced into a metal melt, with an injection head located in a mixing chamber, to which the solid particles are fed from a container, and with a suspension chamber downstream of the mixing chamber, characterized in that a pressurized gas injector (31, 32) is attached to the suspension chamber (30) accelerated delivery of the solid particle-gas suspension to the conveying line (34).
DE19601408841 1960-02-11 1960-11-26 Device for generating a solid particle-gas suspension to be introduced into a metal melt Pending DE1408841B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR818216A FR1250107A (en) 1960-02-11 1960-02-11 Process for producing metals and alloys such as steel and cast iron, and device for implementing this process

Publications (2)

Publication Number Publication Date
DE1408841A1 DE1408841A1 (en) 1968-11-28
DE1408841B2 true DE1408841B2 (en) 1970-07-16

Family

ID=8725072

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19601408841 Pending DE1408841B2 (en) 1960-02-11 1960-11-26 Device for generating a solid particle-gas suspension to be introduced into a metal melt

Country Status (6)

Country Link
US (1) US3194539A (en)
BE (1) BE599296A (en)
DE (1) DE1408841B2 (en)
ES (1) ES261739A1 (en)
FR (1) FR1250107A (en)
GB (1) GB970990A (en)

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US9169062B2 (en) * 2011-06-30 2015-10-27 Kellogg Brown & Root Llc Lock hopper mass flow arrangement
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CN104325556B (en) * 2014-10-21 2016-09-28 重庆市住宏节能建材有限公司 A kind of inorganic heat insulation material mixing tank
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Also Published As

Publication number Publication date
GB970990A (en) 1964-09-23
FR1250107A (en) 1961-01-06
BE599296A (en) 1961-05-16
DE1408841A1 (en) 1968-11-28
ES261739A1 (en) 1961-01-01
US3194539A (en) 1965-07-13

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