DE2113005A1 - Liquid boiler slag - immediate casting technique - Google Patents

Liquid boiler slag - immediate casting technique

Info

Publication number
DE2113005A1
DE2113005A1 DE19712113005 DE2113005A DE2113005A1 DE 2113005 A1 DE2113005 A1 DE 2113005A1 DE 19712113005 DE19712113005 DE 19712113005 DE 2113005 A DE2113005 A DE 2113005A DE 2113005 A1 DE2113005 A1 DE 2113005A1
Authority
DE
Germany
Prior art keywords
slag
liquid
melting chamber
casting technique
castings
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
DE19712113005
Other languages
German (de)
Inventor
Ernst Brinker
Franz Schmitz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19712113005 priority Critical patent/DE2113005A1/en
Publication of DE2113005A1 publication Critical patent/DE2113005A1/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B32/00Artificial stone not provided for in other groups of this subclass
    • C04B32/005Artificial stone obtained by melting at least part of the composition, e.g. metal
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/54Producing shaped prefabricated articles from the material specially adapted for producing articles from molten material, e.g. slag refractory ceramic materials
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B3/00General features in the manufacture of pig-iron
    • C21B3/04Recovery of by-products, e.g. slag
    • C21B3/06Treatment of liquid slag
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B2400/00Treatment of slags originating from iron or steel processes
    • C21B2400/02Physical or chemical treatment of slags
    • C21B2400/022Methods of cooling or quenching molten slag
    • C21B2400/024Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B2400/00Treatment of slags originating from iron or steel processes
    • C21B2400/04Specific shape of slag after cooling
    • C21B2400/044Briquettes or moulded bodies other than sheets
    • 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
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • 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
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Structural Engineering (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The slag is cast directly from its outlet from the boiler into a turntable type casting machine, where castings of varous shapes are produced. The slag may be modified by additions or the slabs produced may be made porous by blowing steam through the molten slag. The process utilizes an otherwise useless product, that presents a disposal problem.

Description

Ernst Brinker, 468 Wanne-Eickel, Heerstraße 98 Franz Schmitz, 468 Wanne-Eickel, Jägerstraße 14 "Verwendung von in Schmelzkammerfeuerungen von Kesseln anfallender Schlacke" Es ist bekannt, daß in modernen Kraftwerken durch die Verbrennung von Kohlen zwei Arten von Verbrennungsrückständen anfallen, deren Verwertung mit erheblichen Schwierigkeiten verbunden ist. Es handelt sich hierbei um Rückstände, die aus Hochleistungskesseln anfallen, und zwar beim sog. trockenen Ascheabzug als Flugasche und beim sog. flüssigen Abzug der Schmelzkammerfeuerungen als Schlackengranulat.Ernst Brinker, 468 Wanne-Eickel, Heerstraße 98 Franz Schmitz, 468 Wanne-Eickel, Jägerstraße 14 "Use of in melting chamber furnaces of boilers accumulating slag "It is known that in modern power plants by incineration There are two types of incineration residues from coal, which can be recycled with associated with considerable difficulties. These are residues from high-performance boilers, namely with the so-called dry ash extraction as Fly ash and in the so-called liquid discharge of the melting chamber furnaces as slag granules.

Schlackengranulat, welches ein Schmelzprodukt ist, entsteht dadurch, daß der Hauptteil der Verbrennungsrückstände als flüssige Schlacke abgezogen, im Wasserbad abgekühlt und dabei granuliert wird. Derartiges Schlackengranulat ist unter verschiedenen Bezeichnungen bekannt, z.B. als Glasasche, Glasschlacke, Schmelzkammerschlacke, Schmelzkammergranulat usw.Slag granulate, which is a melted product, is created by that the main part of the combustion residues withdrawn as liquid slag, im Water bath is cooled and granulated in the process. Such slag granules are known under different names, e.g. as glass ash, glass slag, melting chamber slag, Melting chamber granulate, etc.

Das Schlackengranulat fällt in großen und regelmäßigen Mengen an, so daß es nicht an Bemühungen geihlt hat, hierfür Verwertungsmöglichkeiten zu finden. Bisher wird Schlackengranulat so wie es anfällt, z.B. als Bettungsmaterial für Drainagen und Rohrleitungen eingesetzt. Im Winter dient es teilweise als Streumittel. Auch Betonwerke verwenden es als billiges Verschnittmaterial zu anderen teuren Zuschlagstoffen, wie es gelegentlich auch in abgesiebtem Zustand als Zusatzmaterial bei der Mörtelherstellung verarbeitet wird. Weiterhin ist es bekannt, dieses Material als Zuschlagstoff zu Flugaschen bei der Herstellung von Bausteinen einzusetzen. All diese Vorschläge haben es jedoch nicht ermöglicht, die anfallenden Mengen von Schlackengranulat zu verwerten.The slag granulate accumulates in large and regular quantities, so that it did not count in efforts to exploit this to Find. So far, slag granulate has been used as it is, e.g. as bedding material used for drainage and pipelines. In winter it is sometimes used as a grit. Concrete plants also use it as a cheap waste material for other expensive aggregates, as it is occasionally used in the sieved state as an additional material in the production of mortar is processed. It is also known to use this material as an aggregate Use fly ash in the production of building blocks. All of these suggestions however, did not make it possible to increase the amount of granulated slag utilize.

Von diesem Stand der Technik ausgehend, liegt der Erfindung die Aufgabe zugrunde, eine neue Verwendung von in Schmelzkammerfeuerungen von Kesseln als Verbrennungsrückstand anfallender Schlacke vorzuschlagen, und zwar besteht diese darin, daß bereits die flüssige Schlacke zum Gießen von Formgußstücken bestimmter Gestalt benutzt wird. Der Vorschlag der Erfindung gipfelt somit darin, die flüssige Schlacke nicht erst in einem Wasserbad ahzuschrecken, so daß sie feste- Gestalt annimmt und dann durch Mahlwerkzeuge usw. gebrochen und zerkleinert werden muß, sondern die Schlacke noch im flüssigen Zustand in einem Gießverfahren zu den gewünschten Formen zu verarbeiten. Dies bringt außerordentliche Vorteile mit sich, daß die Schlacke praktisch über einen 24-Stundenbetrieb anfällt und somit fortlaufend verarbeitet werden kann.Proceeding from this prior art, the object of the invention is based on a new use of in melting chamber furnaces of boilers as combustion residue to propose incidental slag, namely that already the liquid slag is used for casting shaped castings of a certain shape. The proposal of the invention thus culminates in not only the liquid slag to frighten in a water bath so that it takes on solid form and then through Grinding tools etc. must be broken and crushed, but the slag still to process in the liquid state in a casting process into the desired shapes. This brings extraordinary advantages that the slag is practically over 24-hour operation occurs and can therefore be processed continuously.

Die Erfindung erstreckt sich weiterhin auf ein Verfahren zur Herstellung von Formgußstücken bestimmter Gestalt aus flüssiger Schmelzkammerschlacke, wobei der Schmelzkammer eines Kessels ein Gießkarussell, eine Gießmaschine od.dgl. nachgeordnet ist.The invention also extends to a method of manufacture from Castings of a certain shape from liquid melting chamber slag, the Melting chamber of a boiler, a casting carousel, a casting machine or the like. subordinate is.

Diese Gießeinrichtungen sowie Gießmashinen sind an sich bekann, so daß sie hier nicht weiter erläutert sind. Diese gestatten eine fortlaufende Fertigung, so daß dPe kontinuierlich anfallende, flüssige Schlacke entsprechend ihrer Menge weiterverarbeitet werden kann.These casting devices and casting machines are known per se, so that they are not further explained here. These allow continuous production, so that dPe continuously accumulating, liquid slag according to its amount can be further processed.

Der erfindungsgemäße Vorschlag eignet sich insbeDndere zur Herstellung von Steien, Formstücken, Verschleißschichten usw.The proposal according to the invention is particularly suitable for production of stones, fittings, wear layers, etc.

Da die erstarrte Schlacke in vollkommen glasigem Zustand vorliegt, sind die Einsatzmöglichkeiten vielfältig, da sie über ausgezeichnete Festigkeits- sowie Isolationseigenschaften verfügen.Since the solidified slag is in a completely glassy state, the possible applications are diverse, as they have excellent strength as well as insulating properties.

Nach einem weiteren Vorschlag der Erfindung ist es auch möglich, in die flüssige Schlacke gespannten Dampf einzuleiten, so daß die so erstellten Formgußstücke bimssteinähnlichen Charakter besitzen. Das Endprodukt kann auch durch Beigabe von Zuschlag-oder in die Kesselfeuerung stoffen in die flüssige Schlacketbeeinflußt werden.According to a further proposal of the invention, it is also possible in initiate the liquid slag strained steam, so that the castings thus created have a pumice-like character. The end product can also be obtained by adding Aggregate or in the boiler materials in the liquid slag influence will.

Mit dem-- erfindungsgemäßen Vorschlag lassen sich insbesondere Steine jeglicher Art für den Haus- und Straßenbau sowie Verschleißschichten für die verschiedensten Anwendungsfälle erstellen.With the proposal according to the invention, stones in particular of all kinds for house and road construction as well as wearing layers for the most diverse Create use cases.

Claims (3)

P a t e n t a ns p r ü c h eP a t e n t a ns p r ü c h e 1.) Verwendung von in Schmelzkammerfeuerungen von Kesseln als Verbrennungsrückstand anfallender flüssiger Schlacke zum Gießen von Formgußstücken bestimmter Gestalt.1.) Use of in melting chamber furnaces of boilers as combustion residue resulting liquid slag for pouring molded castings of a certain shape. Verfahren zur Herstellung von Formgußstücken bestimmter Gestalt aus flüssiger Schmelzkammerschlacke, dadurch gekennzeichnet, daß dr Schmelzkammer eines Kessels ein Gießkarussell, eine Gießmaschine od.dgl. nachgeordnet ist.Process for the production of castings of a certain shape liquid melting chamber slag, characterized in that the melting chamber is one Kessels a casting carousel, a casting machine or the like. is subordinate. 3.) Verfahren nach Anspruch 1 und/oder 2, dadurch gekennzeichnet, daß in die flüssige Schlacke Dampf eingeleitet wird.3.) Method according to claim 1 and / or 2, characterized in that that steam is introduced into the liquid slag. Verfahren nach Anspruch 1 und/oder einem oder mehreren der folgenden, dadurch gekennzeichnet, daß der flüssigen Schlacke Zuschlagstoffe beigegeben werden. Method according to claim 1 and / or one or more of the following, characterized in that aggregates are added to the liquid slag.
DE19712113005 1971-03-18 1971-03-18 Liquid boiler slag - immediate casting technique Pending DE2113005A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19712113005 DE2113005A1 (en) 1971-03-18 1971-03-18 Liquid boiler slag - immediate casting technique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712113005 DE2113005A1 (en) 1971-03-18 1971-03-18 Liquid boiler slag - immediate casting technique

Publications (1)

Publication Number Publication Date
DE2113005A1 true DE2113005A1 (en) 1972-11-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712113005 Pending DE2113005A1 (en) 1971-03-18 1971-03-18 Liquid boiler slag - immediate casting technique

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DE (1) DE2113005A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001505A1 (en) * 1980-10-27 1982-05-13 Anton Hulek Process for the production of slag elements and device for its implementation
EP1083236A1 (en) * 1999-09-09 2001-03-14 Anton Dipl.-Ing. Hulek Process and system for the dry cooling of metallurgical slags with heat recovery
EP1288177A1 (en) * 2000-05-31 2003-03-05 Asahi Glass Company Ltd. Porous high alumina cast refractory and method for its production

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001505A1 (en) * 1980-10-27 1982-05-13 Anton Hulek Process for the production of slag elements and device for its implementation
EP1083236A1 (en) * 1999-09-09 2001-03-14 Anton Dipl.-Ing. Hulek Process and system for the dry cooling of metallurgical slags with heat recovery
EP1288177A1 (en) * 2000-05-31 2003-03-05 Asahi Glass Company Ltd. Porous high alumina cast refractory and method for its production
EP1288177A4 (en) * 2000-05-31 2005-04-27 Asahi Glass Co Ltd Porous high alumina cast refractory and method for its production

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