DE482786C - Process for the production of pellets from hot sintered material - Google Patents

Process for the production of pellets from hot sintered material

Info

Publication number
DE482786C
DE482786C DEE31568D DEE0031568D DE482786C DE 482786 C DE482786 C DE 482786C DE E31568 D DEE31568 D DE E31568D DE E0031568 D DEE0031568 D DE E0031568D DE 482786 C DE482786 C DE 482786C
Authority
DE
Germany
Prior art keywords
rollers
depressions
sintered material
roller
roll barrel
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
Application number
DEE31568D
Other languages
German (de)
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.)
FR GROEPPEL C LUEHRIG S NACHFO
Original Assignee
FR GROEPPEL C LUEHRIG S NACHFO
Publication date
Priority to DEE31568D priority Critical patent/DE482786C/en
Application granted granted Critical
Publication of DE482786C publication Critical patent/DE482786C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B11/00Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/16Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
    • B30B11/165Roll constructions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B11/00Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/16Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00Preliminary treatment of ores or scrap
    • C22B1/14Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24Binding; Briquetting ; Granulating

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Description

Verfahren zum Herstellen von Preßlingen aus heißem Sintergut Es ist bekannt, Feinerze einem Agglomerierverfahren zu unterwerfen und die aus dem Agglomer.erofen, z. B. einem Drehrohrofen, austretenden kleinstückigen, noch heißen Agglomerate, die sich in einem bildsamen halbflüssigen Zustande befinden, mit Hilfe von walzenförmigen Pressen, die Aussparungen enthalten, in Formlinge überzuführen, wie sie für die anschließenden Schmelzverfahren geeignet sind. Bei der praktischen. Durchführung dieses Verfahrens hat sich gezeigt, daß das glühende Agglomerat die eisernen Walzen angreift und auf dein Eisen haftet, wobei sich zwischen dem Eisenoxyd des Agglomerats und dem metallischen Eisen der Walzen Verbindungen bilden, die ein Ablösen des anhaftenden Agglomerats verhindern. Infolgedessen werden die Walzen schon nach kurzer Zeit zerstört. Dieser Mißstand tritt in erhöhtem Maße auf, wenn die Oberfläche der Walzen nicht glatt ist, sondern winklige Vertiefungen enthält. Auch snd die nach dem geschilderten Verfahren hergestellten Formlinge vollkommen dicht, also ohne Porosität, so daß sie im Hochofen schwer reduzierbar sind.Process for producing compacts from hot sintered material It is known to subject fine ores to an agglomeration process and the from the Agglomer.erofen, z. B. a rotary kiln, emerging small-sized, still hot agglomerates, which are in a malleable, semi-fluid state, with the help of cylindrical ones Presses that contain recesses to be converted into moldings, as they are for the subsequent melting processes are suitable. In the practical. execution this process has been shown that the glowing agglomerate the iron rollers attacks and adheres to your iron, between the iron oxide of the agglomerate and the metallic iron of the rollers form compounds that detach the adhesive Prevent agglomerate. As a result, the rollers are destroyed after a short time. This inconvenience occurs to a greater extent when the surface of the rolls is not is smooth but contains angled indentations. Also according to what has been described Process produced moldings completely dense, without porosity, so that they are difficult to reduce in the blast furnace.

Diese Mängel werden durch die Erfindung beseitigt, und zwar dadurch, daß die an sich in bekannter Weise durch Wassereinlaß gekühlten Walzen so eingerichtet sind, daß Kühlwasser während des Preßvorganges in die Formhälften einspritzt und hier 'verdampft. Es ist ferner durch nachgiebige Verlagerung einer der Walzen Vorsorge getroffen, daß bei Überlastung Brüche vermieden werden, und die Formhälften haben eine besondere Gestaltung erfahren, nach welcher winklig zueinander stehende Flächen py rami denartige Hohlräume bilden, die an ihrer Spitze eine feine, in das Walzeninnere führende Bohrung besitzen.These deficiencies are eliminated by the invention, namely by that the rollers, which are cooled in a known manner by water inlet, are set up in such a way are that cooling water is injected into the mold halves during the pressing process and here 'evaporated. It is also precautionary by resilient displacement of one of the rollers made that breakages are avoided when overloaded, and the mold halves have Experience a special design, according to which surfaces are at an angle to one another Py rami den-like cavities form, which at their tip a fine, into the inside of the roller own leading hole.

In der Zeichnung ist eine Vorrichtung zur Ausführung des Verfahrens dargestellt. Von den beiden wassergekühlten Hohlwalzen a und b ist die eine Walzea fest, die andere, b, gefedert und ausschwenkbar angeordnet, um größeren und etwa bereits erhärtetes Stücken trotzdem Durchgang zu gewähren. Beide Walzen werden nach der Art der Eierbrikettpressen zwangsläufig mit gleicher Drehzahl in gegenläufigem Drehsinn angetrieben. Der Mantel jeder Walze ist auf dem ganzen Umfange müt gleichförmigen., schalenartigen Vertiefungen c versehen, welche die Gestalt eines polygonalen länglichen Pyramidenstumpfes haben (Abb.2). In den Scheitelpunkt dieser Vertiefungen mündet eine kleine Öffnung, welche durch einen dünnen Kanal d mit dem Walzeninnern verbunden ist und ständig Wasser in die Form einführt, das sofort verdampft und dadurch den. Formling porös macht. Außerdem strömt den Walzen ununterbrochen Frischwasser von außen zu, so daß sämtliche Metallteile ständig gekühlt sind.The drawing shows a device for carrying out the method. Of the two water-cooled hollow rollers a and b, one roller a is fixed, the other, b, is spring-loaded and swivel-mounted, in order to still allow larger and approximately already hardened pieces to pass through. Like the egg briquette presses, both rollers are inevitably driven in opposite directions at the same speed. The jacket of each roller is provided over its entire circumference with uniform, shell-like depressions c, which have the shape of a polygonal elongated truncated pyramid (Fig. 2). A small opening opens into the apex of these depressions, which is connected to the inside of the roller by a thin channel d and constantly introduces water into the mold, which evaporates immediately and thereby the. Makes the molding porous. In addition, fresh water flows continuously to the rollers from the outside, so that all metal parts are constantly cooled.

Von besonderer Wichtigkeit bei der Ausbildung der Sinterpressen ist der Umstand, daß die Stege zwischen den polygonalen Vertiefungen leine Flächen, sondern nur Kanten bilden.Is of particular importance in the formation of the sintering press the fact that the webs between the polygonal depressions are flat surfaces, but only form edges.

Von gleicher Wichtigkeit ist der Umstand, daß diese Vertiefungen nirgendwo scharfwinklige Kanten und Ecken haben. Wichtig ist endlich, daß die zweite Walze schwenkbar angeordnet ist, damit keine Betriebsstockung entsteht, sobald etwa durch unvermeidliche Betriebsverhältnisse eine vorzeitige Erstarrung des Sintergutes eintritt.Equally important is the fact that these depressions are nowhere have sharp-angled edges and corners. It is finally important that the second roller is pivotably arranged so that no business interruption occurs as soon as about unavoidable operating conditions premature solidification of the sintered material occurs.

Claims (3)

PATRNTANSPRÜcFIR: i. Verfahren zum Herstellen, von Preßlingen aus heißem Sintergut in Walzenpressen mit der Formgebung dienenden Vertiefungen in den Walzenballen, dadurch gekennzeichnet, daß aus den in bekannter Weise wasse@ekühlten Hohlwalzen während des PreßvorZanges Wasser in die Formhälften eingespritzt wird. PATENT CLAIM FOR: i. Method of manufacturing, from compacts hot sintered material in roller presses with the shaping depressions in the Roll barrel, characterized in that the wasse @ ecooled in a known manner Hollow rollers during the PreßvorZange water is injected into the mold halves. 2. Vorrichtung zur Ausübung -des Verfahrens nach Anspruch i, bestehend aus einem gegenläufigen Walzenpaar nach Art der Eierbrikettpressen; dadurch gekennzelchnet, daß die eine Walze in der Mittelachse fest gelagert und die andere seitlich ausschwenkbar ist. 2. Apparatus for exercising -the method according to claim i, consisting of one counter-rotating pair of rollers in the manner of egg briquette presses; characterized by that one roller is fixedly mounted in the central axis and the other can be swiveled out laterally is. 3. Vorrichtung nach Anspruch 2, dadurch gekennee,Ichnet, daß die Formen durch pyramidenstumpfförmige Vertiefungen in den Walzenballen gebildet werden. q.. Vorri:chtung nach Anspruch 2 und 3, dadurch gekennzeichnet, daß die Vertiefungen in den. Walzenballen durch feine Kanäle mit dem Innern der Walzen verbunden sind, die denn Kühlmittel der Walzen dien Zu9.uß zu den Formen gestatten.3. Apparatus according to claim 2, characterized in that the forms by Truncated pyramidal depressions are formed in the roll barrel. q .. caution according to claim 2 and 3, characterized in that the depressions in the. Roll barrel are connected to the inside of the rollers by fine channels that act as coolants the rollers are used to allow access to the molds.
DEE31568D Process for the production of pellets from hot sintered material Expired DE482786C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE31568D DE482786C (en) Process for the production of pellets from hot sintered material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE31568D DE482786C (en) Process for the production of pellets from hot sintered material

Publications (1)

Publication Number Publication Date
DE482786C true DE482786C (en) 1929-09-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEE31568D Expired DE482786C (en) Process for the production of pellets from hot sintered material

Country Status (1)

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DE (1) DE482786C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997025285A1 (en) * 1996-01-05 1997-07-17 Isover Saint-Gobain Formed body, and method and device for producing it

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997025285A1 (en) * 1996-01-05 1997-07-17 Isover Saint-Gobain Formed body, and method and device for producing it

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