EP0672880A1 - Garnissage résistant à l'usure pour un four à cuve et briques correspondants - Google Patents

Garnissage résistant à l'usure pour un four à cuve et briques correspondants Download PDF

Info

Publication number
EP0672880A1
EP0672880A1 EP94113604A EP94113604A EP0672880A1 EP 0672880 A1 EP0672880 A1 EP 0672880A1 EP 94113604 A EP94113604 A EP 94113604A EP 94113604 A EP94113604 A EP 94113604A EP 0672880 A1 EP0672880 A1 EP 0672880A1
Authority
EP
European Patent Office
Prior art keywords
insert
wear lining
mortar layer
stone
horizontal joint
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.)
Withdrawn
Application number
EP94113604A
Other languages
German (de)
English (en)
Inventor
Morteza Dr.Nat.Phil. Nazirizadeh
Jürgen Dipl.-Ing. Plath
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.)
Didier Werke AG
Original Assignee
Didier Werke 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 Didier Werke AG filed Critical Didier Werke AG
Publication of EP0672880A1 publication Critical patent/EP0672880A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/0003—Linings or walls
    • F27D1/0023—Linings or walls comprising expansion joints or means to restrain expansion due to thermic flows
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/04—Blast furnaces with special refractories
    • C21B7/06—Linings for furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
    • F27D1/06—Composite bricks or blocks, e.g. panels, modules
    • F27D1/063—Individual composite bricks or blocks

Definitions

  • the invention relates to a wear lining of a shaft furnace made of refractory, ceramic stones, which are connected by means of a mortar layer, inserts burning out at operating temperature between the stones in the horizontal joints on the inside of the furnace in front of the mortar layer.
  • the invention relates to a refractory, ceramic stone for such a wear lining.
  • Such a wear lining is described in DE-OS 15 58 568.
  • the burnt inlays provide room for expansion that is open on the hot side, inside the furnace, and takes up about 2/3 of the stone depth. With their shorter part, about 1/3 of the stone depth, the stones lie on top of each other. Elaborate Verscuhe have shown that such an arrangement can cause serious damage to the wear lining.
  • the stability of the wear lining suffers from this arrangement, because the stones can tilt towards the vertical axis of the furnace because of the relatively small support surface. This could only be avoided by complex bracing of the stone layers in the radial direction to the vertical axis.
  • a wear lining of the type mentioned at the outset is provided, for example, in coke-fired lime kilns.
  • the firing is often uneven, so that, for example, 500 ° C. occurs in one place of the lining during a fire situation and, for example, 1200 ° in another fire situation.
  • the thermal expansion compensation according to DE-OS 15 58 568 is insufficient.
  • flaking occurs on the stones, especially on the inside of the furnace, especially when magnesia stones are used instead of magnesia chrome stones.
  • DE 30 35 827 C2 describes a refractory brick for lining rotary kilns.
  • the area of the expansion joint is much larger than that of the base.
  • the object of the invention is to propose a wear lining of the type mentioned at the outset which, with a simple structure, has high thermal and mechanical stability. Furthermore, it is an object of the invention to propose a stone for such a wear lining.
  • the above object is achieved in the case of a wear lining of the type mentioned at the outset in that the insert occupies less than half of the horizontal joint area and the mortar layer occupies more than half of the horizontal joint area.
  • the insert occupies approximately 1/3 of the horizontal joint surface and the mortar layer approximately 2/3 of the horizontal joint surface.
  • the insert preferably takes up about 1/3 of the horizontal joint depth and the mortar layer about 2/3 of the joint depth.
  • a refractory ceramic stone according to the invention is characterized in that an insert is attached to the stone on its horizontal surface, which occupies less than half of this surface from the hot side.
  • a cylindrical furnace for example a coke-fired lime shaft furnace, has a vertical axis (A). Insulating blocks (2) and a permanent lining (3) are arranged within an outer jacket (1). A wear lining (4) connects to the permanent lining (3) on the inside of the furnace. A layer (5) made of a foamed plastic or of fiber material is provided between the wear lining (4) and the permanent lining (3).
  • the wear lining (4) consists of refractory, ceramic stones (6). These are, for example, magnesia stones which are made from chrome-free, fire-resistant, ceramic material with the trade name Rubinal MZL by the applicant.
  • the stones (6) have the shape of rotary kiln arches and have a shape of rotary kiln arches and have a trapezoidal horizontal joint surface of depth (L) and an inside width (b) and an outside width (B), the width (B) is larger than the width (b) and is about 10 cm.
  • the height (H) of the stones (6) is greater than the width (B) and is approximately 20 cm.
  • the vertical stone surface (7) facing the inside of the furnace and the vertical stone contact surfaces (8) are rectangular.
  • the insert (9) has a thickness (d) which corresponds to the strength of the expansion distances in the wear lining (4) in the area of the stone surfaces (7) on the furnace side.
  • the thickness is between 0.2 mm and 2.0 mm.
  • the insert (9) extends from the stone surface (7) on the trapezoidal surface. horizontal joint surface to a depth (11), so that a depth (12) remains free on the trapezoidal joint surface for receiving mortar (10).
  • the partial area of the horizontal joint area covered by the insert (9) is smaller than the free-standing area on the horizontal joint area for the mortar (10).
  • the depth (11) that the insert (9) occupies is approximately 1/3 of the depth (L).
  • the depth (12) of the mortarable partial surface of the trapezoidal joint surface is approximately 2/3 of the length (L).
  • the depth (11) is, for example, 50 mm. If necessary, it is also possible within the scope of the invention to provide a mortar layer (13) over the insert (9) in order to even out the joint, but which is thinner than the mortar layer (10) by about the thickness of the insert (9) (Fig 3).
  • the stones (6) are built up one after the other in horizontal layers, with mortar being applied in the horizontal joint surface areas of the length (12).
  • Cardboard inserts (11) can be inserted between the stone surfaces (8).
  • the inserts (9) burn out during commissioning, so that expansion spaces are created between the stone surfaces (7) on the furnace side.
  • the mortar layers (10) which have a large surface area in comparison to these expansion spaces, ensure that the rows of stones lying vertically on top of one another do not have the tendency to tip inwards towards the axis (A).
  • a good pressure distribution between the superimposed stone layers is achieved via these comparatively large mortar surfaces (10), so that the individual stones (6) do not load themselves in the direction of the vertical axis (A) in such a way that the load of the upper stone layers or by the Exposure to thermal expansion leads to considerable quarries.
  • the stones (6) are designed as rotary kiln arches.
  • similar stone formats such as for transverse arches whose height is less than their width.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP94113604A 1994-03-19 1994-08-31 Garnissage résistant à l'usure pour un four à cuve et briques correspondants Withdrawn EP0672880A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944409501 DE4409501A1 (de) 1994-03-19 1994-03-19 Verschleißfutter eines Schachtofens und Stein hierfür
DE4409501 1994-03-19

Publications (1)

Publication Number Publication Date
EP0672880A1 true EP0672880A1 (fr) 1995-09-20

Family

ID=6513301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94113604A Withdrawn EP0672880A1 (fr) 1994-03-19 1994-08-31 Garnissage résistant à l'usure pour un four à cuve et briques correspondants

Country Status (2)

Country Link
EP (1) EP0672880A1 (fr)
DE (1) DE4409501A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002025197A1 (fr) * 2000-09-18 2002-03-28 Siemens Aktiengesellschaft Pierre servant de bouclier thermique pour garnir une paroi de chambre de combustion, chambre de combustion et turbine a gaz correspondantes
US8343970B2 (en) 2010-03-12 2013-01-01 Omeros Corporation PDE10 inhibitors and related compositions and methods
US9493447B2 (en) 2014-04-28 2016-11-15 Omeros Corporation Optically active PDE10 inhibitor
US9650368B2 (en) 2014-04-28 2017-05-16 Omeros Corporation Processes and intermediates for the preparation of a PDE10 inhibitor
US9879002B2 (en) 2015-04-24 2018-01-30 Omeros Corporation PDE10 inhibitors and related compositions and methods

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29917012U1 (de) * 1999-09-27 2001-02-15 D.W. Schulte GmbH & Co. KG, 58840 Plettenberg Feuerfeste Ofenzustellung für Wärmeöfen und Feuerfestplatten hierfür

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2180969A (en) * 1939-02-15 1939-11-21 E J Lavino & Co Furnace construction
FR892956A (fr) * 1942-03-28 1944-05-25 Veitscher Magnesitwerke Ag Voûte pour fours industriels
US3324810A (en) * 1964-10-30 1967-06-13 Kaiser Aluminium Chem Corp Refractory with expansion means attached
DE1558568A1 (de) * 1967-07-25 1970-04-09 Inst Za Bakar Mauerwerk fuer metallurgische OEfen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2180969A (en) * 1939-02-15 1939-11-21 E J Lavino & Co Furnace construction
FR892956A (fr) * 1942-03-28 1944-05-25 Veitscher Magnesitwerke Ag Voûte pour fours industriels
US3324810A (en) * 1964-10-30 1967-06-13 Kaiser Aluminium Chem Corp Refractory with expansion means attached
DE1558568A1 (de) * 1967-07-25 1970-04-09 Inst Za Bakar Mauerwerk fuer metallurgische OEfen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"feuerfest abc - ein kleines lexikon der feuerfesttechnik", DIDIER WERKE AG, WIESBADEN *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002025197A1 (fr) * 2000-09-18 2002-03-28 Siemens Aktiengesellschaft Pierre servant de bouclier thermique pour garnir une paroi de chambre de combustion, chambre de combustion et turbine a gaz correspondantes
US6948437B2 (en) 2000-09-18 2005-09-27 Siemens Aktiengesellschaft Thermal shielding brick for lining a combustion chamber wall, combustion chamber and a gas turbine
US8343970B2 (en) 2010-03-12 2013-01-01 Omeros Corporation PDE10 inhibitors and related compositions and methods
US9493447B2 (en) 2014-04-28 2016-11-15 Omeros Corporation Optically active PDE10 inhibitor
US9650368B2 (en) 2014-04-28 2017-05-16 Omeros Corporation Processes and intermediates for the preparation of a PDE10 inhibitor
US9850238B2 (en) 2014-04-28 2017-12-26 Omeros Corporation Optically active PDE10 inhibitor
US9879002B2 (en) 2015-04-24 2018-01-30 Omeros Corporation PDE10 inhibitors and related compositions and methods

Also Published As

Publication number Publication date
DE4409501A1 (de) 1995-09-21

Similar Documents

Publication Publication Date Title
AT405766B (de) Schlusssteinset
EP0672880A1 (fr) Garnissage résistant à l'usure pour un four à cuve et briques correspondants
DE4433154C2 (de) Feuerfeste Wandung für einen Heizkanal eines offenen Ringkammerofens
DE2243517C3 (de) Feuerfeste Wandkonstruktion
DE1997750U (de) Stuetzglied fuer die verwendung in ofenanlagen.
DE3909340A1 (de) Wandkonstruktion von kokstrockenkuehlkammern mit feuerfester auskleidung und verfahen zum auswechseln der auskleidung
DE69418341T3 (de) Drehrohrofenauskleidung und stein dafür
EP2784421B1 (fr) Brique de voûte pour le revêtement intérieur cylindrique d'un four rotatif et four rotatif
AT246007B (de) Feuerfeste aufrechte Ausmauerung für etwa zylindrische oder teilzylindrische Hohlräume
DE2221639C3 (de) Ausmauerung von Seitenwandteilen eines Ofens, insbesondere eines Hochofens
DE2256523B2 (de) Winderhitzer, insbesondere für Hochöfen
DE2843735A1 (de) Herdausbau
DE908594C (de) Moertellsoes Futter fuer OEfen mit kreisfoermigem oder ovalem Querschnitt, insbesondere fuer Drehoefen
DE8321679U1 (de) Platte aus feuerfestem material
DE629481C (de) Ausmauerung fuer Gewoelbe von Hochtemperaturoefen, wie Elektrostahl- oder Siemens-Martin-OEfen
AT200493B (de) Feuerfester Stein zur Ausmauerung von Öfen ringförmigen Querschnittes, insbesondere von Drehrohröfen
DE3035827C2 (de) Feuerfester Stein zur Ausmauerung von Drehrohröfen
DE1301011B (de) Feuerfester Keilstein zur Ausmauerung von gewoelbten Feuerraeumen, insbesondere von Drehrohroefen, und damit hergestelltes Mauerwerk
DE2918281C2 (de) Feuerfestes Plateau für Tunnelofenwagen
DE2212318C3 (de) Ausmauerung für den Boden metallurgischer Schachtöfen, insbesondere von Hochöfen
DE2804913B2 (de) Feuerfeste Auskleidung für den Boden eines Schachtofens, insbesondere eines Hochofens
DE3232244A1 (de) Verfahren zur auskleidung metallurgischer oefen mit basischem auskleidungsmaterial
DE2246339A1 (de) Thermisch beanspruchungsgerechtes, schnell verlegbares steinformat fuer die hochtemperaturzone von drehrohroefen, hergestellt aus teergebundenen hochbasischen sinterprodukten, wie dolomit, magnesit oder deren mischungen
DE738050C (de) Unverankertes Mauerwerk fuer keramische Brennoefen
DE2458989C3 (de) Verbundblock für feuerfeste Ofenauskleidungen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19940831

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE DK ES FR GB GR IE IT NL

17Q First examination report despatched

Effective date: 19960417

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19961118