US3393904A - Travelling grate sintering apparatus and the like - Google Patents

Travelling grate sintering apparatus and the like Download PDF

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Publication number
US3393904A
US3393904A US560422A US56042266A US3393904A US 3393904 A US3393904 A US 3393904A US 560422 A US560422 A US 560422A US 56042266 A US56042266 A US 56042266A US 3393904 A US3393904 A US 3393904A
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US
United States
Prior art keywords
grate
tunnel
pallets
drop
windboxes
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 - Lifetime
Application number
US560422A
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English (en)
Inventor
Taylor Wilfred Cyril George
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.)
HUNTINGTON HEBERLEIN AND Co Ltd
HUNTINGTON HEBERLEIN AND COMPA
Original Assignee
HUNTINGTON HEBERLEIN AND COMPA
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 HUNTINGTON HEBERLEIN AND COMPA filed Critical HUNTINGTON HEBERLEIN AND COMPA
Application granted granted Critical
Publication of US3393904A publication Critical patent/US3393904A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/02—Moulding by agglomerating
    • B29C67/04—Sintering
    • 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
    • F27B21/06—Endless-strand sintering machines

Definitions

  • the invention relates to sintering apparatus of the kind having a gas collecting hood, drop seal arrangements being provided between the travelling grate of the apparatus and the hood, the drop-bars of the drop seal arrangements being carried by protuberances from the sides of i the grate and which define continuous troughs along the sides of the grate for carrying dust out of the hood.
  • the present invention relates to apparatus, such as s ntering apparatus, of the kin-d having an endless travelllng grate, for example in the form of a series of pallets, for carrying material which is treated by gases blown through the grate from the underside thereof, as the grate travels along, windboxes being provided beneath the grate and a gas collecting hood in the form of a tunnel being positioned over the grate.
  • apparatus such as s ntering apparatus, of the kin-d having an endless travelllng grate, for example in the form of a series of pallets, for carrying material which is treated by gases blown through the grate from the underside thereof, as the grate travels along, windboxes being provided beneath the grate and a gas collecting hood in the form of a tunnel being positioned over the grate.
  • the grate is, so to speak, sealed to the windboxes to prevent excessive escape of gases to the atmosphere, the seal comprising either a grease slide arrangement which also provides a supporting track for the travelling grate, or, if the grate has a separate supporting rail track engaged by rollers or the like on the grate, a drop seal arrangement.
  • the guiding of the grate over its return run is usually by rollers or the like on the grate which engage a guide track.
  • such apparatus may also be operated so that over a first section gas is blown upwardly from the underside of the grate and over a second section is drawn downwardly through the grate by using pressure windboxes over the first section and suction windboxes over the second section, the sealing arrangement over said second section serving to prevent excessive air being drawn directly into the suction boxes.
  • Grease slide and drop seal arrangements are similar insofar as they both comprise surfaces associated with the windboxes, for example surfaces on the supporting frame for the windboxes, over which slide sealing members associated with the travelling grate.
  • grease slide arrangement grease is pumped between the sliding surfaces and in the drop seal arrangement the sealing members associated with the grate are drop bars which slide over wear strips and are so mounted that as the wear strips wear away, drop downwardly under their own weight to take up the wear automatically.
  • agglomerated material for example sintered material or hardened pellets, principally of a mineral base
  • dust and particles blown off the grate can fall between the sides of the grate and the sides of the tunnel in known apparatus and can eventually block the track path of the grate.
  • the dust under these conditions can eventually penetrate the axle bearing enclosure of the grate rollers which then require continuous maintenance.
  • a drop seal arrangement between the tunnel and grate, the drop bars of the drop seal arrangement being supported by protuberances from the sides of the grate which are adapted to collect the dust blown oft the grate and thus transport the dust out of the tunnel where it can be discharged.
  • the side-walls of the tunnel can be termi nated at the level of this drop seal arrangement, so that the ends of the tunnel which are sealed off to prevent gases being blown to atmosphere or air being sucked into or out of the tunnel ends need only be profiled to allow movement through them of that part of the grate above the drop seals; thus the problem of sealing off the ends of the tunnel arising when the rollers have to pass through the ends of the tunnel is obviated.
  • the lower side-walls of the grate and the rollers and associated tracks can be exposed to atmosphere which gives ease of access for maintenance and also prolongs the life of the lubricating grease for the rollers because the grease is not subject to the temperature of the hot gases blown through the grate.
  • the tunnel side-walls can be extended to do so.
  • FIGURE 1 is a section through the sintering apparatus looking towards the discharge end
  • FIGURE 2 is an enlarged view of that part indicated at X in FIGURE 1.
  • the sintering apparatus has a travelling grate in the form of an endless series of pallets 1 which are supported and guided to move continuously around a closed loop through upper and lower runs.
  • the pallets I carry material 2 over a series of windboxes 3 through which hot gases are blown as indicated by the arrows 4 to pass through the bottoms of the pallets 1 and hence through the material 2 to effect sintering.
  • the material 2 is automatically discharged from the pallets 1 and the pallets 1 return empty over their lower run which is below the windboxes 3 to the reloading position.
  • a gas collecting hood in the form of a tunnel 5 is disposed over the windboxes 3 and extending from the tunnel 5 in a gas take-01f duct 6.
  • the apparatus is supported by a girder framework as can be clearly seen in the drawings and this carries rails 7 extending along the upper run of the pallets 1 and forming a track engaged by roller 8 on the pallets 1 to support and guide the pallets 1 over their upper run and rails 9 extending along the lower run of the pallets 1 and which are engaged by the rollers 8 to support and guide the pallets 1 over their lower run.
  • Deflector plates 15 extend inwardly and downwardly from the sides of the tunnel so that some of the dust and particles blown out of the bed of material 2 is deflected back into the bed.
  • the sides of the pallets 1 are in upper and lower sidewall sections 16 and 17, the floor 18 of the pallets 1 extending from the junction of the upper and lower sections 16 and 17.
  • brackets 19 which carry the axles of aforementioned rollers 8 and drop bars 14 of drop seal arrangement.
  • the brackets 19 each terminate at their upper end, which is about at the level of the floors 18 of the pallets 1, in a trough 20' to the outer side of which is mounted a drop bar 22 of a further drop seal arrangement, the associated wear strip 23 of this drop seal arrangement being carried by a girder 24 supporting a sand seal 25 in which the lower edge of the sheet metal structure of tunnel 5 terminates.
  • the drop seal arrangement between the tunnel 5 and the pallets 1 enables the tunnel to terminate as shown at the girders 24 so that the rail 7, rollers 8 and lower side- .4 wall sections 17 of the pallets 1 are exposed to the atmosphere. If it is desired to extend the tunnel sides downwardly this can be done by casing 26 shown in dash-dot line in FIGURE 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Tunnel Furnaces (AREA)
US560422A 1965-07-02 1966-06-27 Travelling grate sintering apparatus and the like Expired - Lifetime US3393904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28147/65A GB1097371A (en) 1965-07-02 1965-07-02 Improvements in or relating to sintering apparatus and the like

Publications (1)

Publication Number Publication Date
US3393904A true US3393904A (en) 1968-07-23

Family

ID=10271031

Family Applications (1)

Application Number Title Priority Date Filing Date
US560422A Expired - Lifetime US3393904A (en) 1965-07-02 1966-06-27 Travelling grate sintering apparatus and the like

Country Status (4)

Country Link
US (1) US3393904A (instruction)
BE (1) BE683158A (instruction)
DE (1) DE1508475C3 (instruction)
GB (1) GB1097371A (instruction)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589691A (en) * 1968-10-07 1971-06-29 Mckee & Co Arthur G Treatment of material on a moving support
US3841829A (en) * 1972-10-17 1974-10-15 Polysius Ag Traveling grate for heat treating materials
US4437452A (en) 1979-07-31 1984-03-20 Detroit Stoker Company Rotary continuous ash discharge stoker
US5517767A (en) * 1995-02-01 1996-05-21 Schechinger; Thomas M. Grass and other yard waste materials dryer apparatus and method
US20140311870A1 (en) * 2011-09-28 2014-10-23 AUMUND Fördertechnik GmbH Conveying system sealed off from the surrounding atmosphere
CN104864716A (zh) * 2015-06-09 2015-08-26 马春强 烧结机台车水循环式二级水密封装置
CN104864713A (zh) * 2015-06-09 2015-08-26 马春强 烧结机台车一级水密封装置
US10234205B2 (en) * 2016-02-19 2019-03-19 Outotec (Finland) Oy Method and apparatus for charging pallet cars of a traveling grate for the thermal treatment of bulk materials

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2844227C2 (de) * 1978-10-11 1987-03-26 Metallgesellschaft Ag, 6000 Frankfurt Rundkühler für heißes stückiges Material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789809A (en) * 1956-03-26 1957-04-23 Mckee & Co Arthur G Sealing means for sintering machines or the like
US2825550A (en) * 1955-12-06 1958-03-04 Mcdowell Company Inc Wind box sealing construction for sintering machines
US3059912A (en) * 1960-04-15 1962-10-23 Koppers Co Inc Self-sealing sintering machine and sinter cooler
US3172936A (en) * 1965-03-09 Sliding seals for sintering machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3172936A (en) * 1965-03-09 Sliding seals for sintering machines
US2825550A (en) * 1955-12-06 1958-03-04 Mcdowell Company Inc Wind box sealing construction for sintering machines
US2789809A (en) * 1956-03-26 1957-04-23 Mckee & Co Arthur G Sealing means for sintering machines or the like
US3059912A (en) * 1960-04-15 1962-10-23 Koppers Co Inc Self-sealing sintering machine and sinter cooler

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589691A (en) * 1968-10-07 1971-06-29 Mckee & Co Arthur G Treatment of material on a moving support
US3841829A (en) * 1972-10-17 1974-10-15 Polysius Ag Traveling grate for heat treating materials
US4437452A (en) 1979-07-31 1984-03-20 Detroit Stoker Company Rotary continuous ash discharge stoker
US5517767A (en) * 1995-02-01 1996-05-21 Schechinger; Thomas M. Grass and other yard waste materials dryer apparatus and method
US20140311870A1 (en) * 2011-09-28 2014-10-23 AUMUND Fördertechnik GmbH Conveying system sealed off from the surrounding atmosphere
US9004267B2 (en) * 2011-09-28 2015-04-14 Aumund Fordertechnik Conveying system sealed off from the surrounding atmosphere
CN104864716A (zh) * 2015-06-09 2015-08-26 马春强 烧结机台车水循环式二级水密封装置
CN104864713A (zh) * 2015-06-09 2015-08-26 马春强 烧结机台车一级水密封装置
US10234205B2 (en) * 2016-02-19 2019-03-19 Outotec (Finland) Oy Method and apparatus for charging pallet cars of a traveling grate for the thermal treatment of bulk materials

Also Published As

Publication number Publication date
DE1508475C3 (de) 1974-08-08
GB1097371A (en) 1968-01-03
DE1508475B2 (de) 1974-01-17
DE1508475A1 (de) 1969-10-30
BE683158A (instruction) 1966-12-01

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