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
  • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
  • F27D15/02—Cooling
  • F27D15/0206—Cooling with means to convey the charge
  • F27D15/0213—Cooling with means to convey the charge comprising a cooling grate
  • F27D15/022—Cooling with means to convey the charge comprising a cooling grate grate plates
• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
  • C22B1/00—Preliminary treatment of ores or scrap
  • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
  • C22B1/16—Sintering; Agglomerating
  • C22B1/20—Sintering; Agglomerating in sintering machines with movable grates
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23H—GRATES; CLEANING OR RAKING GRATES
  • F23H11/00—Travelling-grates
  • F23H11/18—Details
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23H—GRATES; CLEANING OR RAKING GRATES
  • F23H13/00—Grates not covered by any of groups F23H1/00-F23H11/00
  • F23H13/02—Basket grates, e.g. with shaking arrangement
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23H—GRATES; CLEANING OR RAKING GRATES
  • F23H17/00—Details of grates
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
  • F26B25/06—Chambers, containers, or receptacles
  • F26B25/063—Movable containers or receptacles, e.g. carts, trolleys, pallet-boxes
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
  • F26B25/06—Chambers, containers, or receptacles
  • F26B25/08—Parts thereof
  • F26B25/10—Floors, roofs, or bottoms; False bottoms
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
  • F26B25/06—Chambers, containers, or receptacles
  • F26B25/14—Chambers, containers, receptacles of simple construction
  • F26B25/18—Chambers, containers, receptacles of simple construction mainly open, e.g. dish, tray, pan, rack
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
  • F26B5/12—Drying solid materials or objects by processes not involving the application of heat by suction
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F27—FURNACES; KILNS; OVENS; RETORTS
  • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
  • F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
  • F27B21/02—Sintering grates or tables
• • 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
  • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
  • F27D15/02—Cooling

Definitions

• the invention relates to a method for converting a device for thermal
• Fine-grained materials in particular a device for drying, burning and / or sintering fine-grained raw materials to be used in the iron industry, with a grate for taking up the substances to be treated, for increasing the capacity.
• the maximum amount of material to be treated that can be applied to the grate is essentially limited by the height of the side walls, the grate surface and the power with which the treatment gas can be sucked through the bed of granular material.
• Grate cars for sintering plants and pellet burning plants usually consist mainly of the following parts: the one-piece or multi-part grate car body of u. a. is equipped with rollers, the grate, which is arranged on the top of the grate body and is supported by it, the so-called side walls, which are installed on the two long sides of the grate and thus the grate, i. H. limit the width of the reaction area.
• the grate body with the longitudinal and transverse walls and stiffening ribs adjoining the grate approximately vertically forms spaces (can already be seen as part of the suction boxes) through which the sintering or
• Pellet plant the exhaust gas or the process air is directed to the suction lines.
• the top of the load is protected by so-called interchangeable insulating pieces.
• Sealing elements are arranged on the underside of the longitudinal walls of the grate car, which seal the grate car from the pipeline system adjoining in this area.
• the grate is formed by individual grate bars, which are suspended in the area of the upper side of the transverse walls and stiffening ribs running transversely to the longitudinal direction of the grate carriage, or in the insulating pieces usually arranged there.
• the grate cars form the essential part of the moving grate of a moving grate sintering machine or one
• the present invention also makes use of the attachment of gas-impermeable support elements, or the associated capacity expansion, the conversion of the suction box, in particular the replacement of parts of the vertical suction box walls by suction box walls which are inclined upwards outwards, should be mentioned as a further essential aspect.
• the embodiment of the invention described above is directed to the conversion of a device in which the suction box directly adjoins the grate at the bottom.
• Devices of this type usually do not have a moving grate, but have a stationary grate, for example sintering pans.
• the method according to the invention is carried out in such a way that the upper parts of the suction box walls which are inclined upwards outward also include an angle of 30 - 60, preferably 45 °, of the vertical.
• suction box walls are completely removed and replaced by suction box walls, each with a vertical lower part and an upper part inclined upwards outwards.
• the height of the removed upper part of the suction box walls is preferably 1/30 to 1/5 the width of the grate originally present.
• the width of the gas-impermeable support elements is preferably also 1/30 to 1/5 of the width of the grate originally present.
• This information refers to grate cars with a width of e.g. 4 m, which were widened to 5 m by the method according to the invention. In some cases, the widening that can be achieved can be even higher.
• Another embodiment of the method according to the invention is directed to the conversion of a system with a traveling grate.
• such plants described in the introduction make up the largest share of sintering or pellet burning plants.
• This further embodiment of the method according to the invention therefore relates to a method for converting a plant for the thermal treatment of fine-grained materials, in particular a device for drying, firing and / or sintering fine-grained raw materials to be used in the iron industry, with a traveling grate, the traveling grate of a plurality of Grate carriage is formed, wherein each grate carriage is formed a grate, a grate carriage body arranged underneath, each with two opposite, essentially vertical longitudinal and transverse walls, and having side walls extending upward from the long sides of the grate carriage body, longitudinal and side walls being essentially flush with one another are arranged.
• the object of the invention is achieved in that the grate car bodies each Grate car are replaced by grate car bodies, the longitudinal walls of which are designed inclined at an angle upwards outwards, and in which gas-tight support elements protrude outwards on the long sides of the grates.
• the design of the new grate car according to the invention differs from the previously standard grate car by the following features:
• the longitudinal walls of the grate body are preferably inclined at an angle of preferably approximately 45 ° to the vertical upwards outwards.
• the width of the grate is inclined upwards by the uppermost part of the grate
• the position of the rollers and the longitudinal seals can be compared to conventional
• the invention therefore also relates to grate cars with a grate body, which is formed by two opposite longitudinal and transverse walls, one on the
• Top of the grate car body arranged grate and with two opposite, extending from the long sides of the grate body upward side walls.
• the grate trolleys according to the invention achieve the object set according to the invention in that the longitudinal walls of the grate trolley body are inclined at an angle upwards outwards and in that gas-tight protruding outwards on the longitudinal sides of the grate
• the invention further relates to a plant for thermal treatment of fine-grained
• Fabrics in particular a device for drying, burning and / or sintering fine-grained raw materials to be used in the iron industry, with a traveling grate, the traveling grate being formed by a plurality of grate wagons according to the invention.
• the new grate cars according to the invention have a number of advantages for sintering and
• the width of a building required for the installation of a sintering machine or pellet burning machine can be considerably smaller than in the case of a grate wagon with the same grate wagon width, as a result of which substantial savings in investment costs can be achieved.
• the capacity of an existing sintering or pellet system can be increased by installing the new grate car according to the invention - depending on the original grate car width
• Pellet burning machine is installed without the subsequent suction or pressure system, the position of the rails and the
• Grate area (without the gas-tight area, which is additionally formed by the gas-tight plates) must be increased.
• Process volume (Nm3 / t pellet) in the pellet burning plant is significantly reduced.
• the drawing Fig. 1 shows a vertical section through a device before the conversion, all non-essential parts of the invention, such as. Sealing of the blower box, etc. are not shown.
• the prior art device shown in FIG. 1 has one
• Suction box 2 which extends from the side of the grate 1 downwards
• Suction box walls 3 is formed and to which a suction fan, not shown, is connected. With the suction fan, hot treatment gas is sucked from top to bottom through the bed of 4 fine-grained substances and the grate 1.
• the side walls 6 and usually also the grate 1 are first removed. Then an upper part is removed from the suction box walls 3 and the suction box walls 3 (FIG. 1) are shortened to suction box walls 3a (FIG. 2).
• gas-impermeable support elements 8 which are located approximately at the level of the grate 1, are fastened to the side edges 7 of the parts 3 b which are inclined upwards outwards.
• the gas-impermeable support elements 8 do not necessarily have to be designed as plates, but can also have, for example, a triangular cross-sectional profile.
• the initially removed side walls 6 are attached again.
• a grate 10 is used, which is either made by enlarging the grate 1 or can be a new purchase.
• the original width A of the grate 1 has been increased by twice the lengths of the parts 3b (width B) projected horizontally into the horizontal, and by twice the width C of the gas-impermeable support elements 8.
• the embodiment shown in Fig. 3 shows in a cross section through a sintering system with moving grate a grate car 11 according to the invention.
• the grate car 11 has a grate car body 12 which is equipped with running wheels 13. Arranged above this is a grate 14, on the long sides of which gas-impermeable support elements 15 are attached. Side walls 16 are arranged on the side of the gas-impermeable support elements 15. Below the grate body 12 there is a fixed suction box 17.
• the grate body 12 shown in the figure has longitudinal walls which are inclined upwards at an angle of 45 ° to the vertical. This increases the original suction area width D to the new suction area width E. Due to the gas-impermeable support elements 15, the overall width of the grate wagon is widened again, namely to the new grate width F.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Life Sciences & Earth Sciences (AREA)
• Environmental & Geological Engineering (AREA)
• Molecular Biology (AREA)
• Health & Medical Sciences (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Geology (AREA)
• Manufacturing & Machinery (AREA)
• Materials Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Manufacture And Refinement Of Metals (AREA)
• Furnace Details (AREA)
• Tunnel Furnaces (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (2)

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Citations (5)

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• 2004
  • 2004-03-17 AT AT0020504U patent/AT7072U3/de not_active IP Right Cessation
• 2005
  • 2005-03-08 BR BRPI0508886-0A patent/BRPI0508886B1/pt active IP Right Grant
  • 2005-03-08 WO PCT/EP2005/002428 patent/WO2005093355A1/de active Application Filing
  • 2005-03-08 TW TW094106918A patent/TWI390171B/zh active
  • 2005-03-08 KR KR1020067021428A patent/KR20060130743A/ko not_active Application Discontinuation
  • 2005-03-08 EP EP05715827.1A patent/EP1725821B1/de not_active Not-in-force
  • 2005-03-08 RU RU2006136417/02A patent/RU2392553C2/ru active
  • 2005-03-08 CN CNA2005800150559A patent/CN1950660A/zh active Pending
  • 2005-08-03 UA UAA200610563U patent/UA48020U/ru unknown

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