US3910756A - Heat treating drum - Google Patents

Heat treating drum Download PDF

Info

Publication number
US3910756A
US3910756A US412429A US41242973A US3910756A US 3910756 A US3910756 A US 3910756A US 412429 A US412429 A US 412429A US 41242973 A US41242973 A US 41242973A US 3910756 A US3910756 A US 3910756A
Authority
US
United States
Prior art keywords
wall
wear plates
drum
lifting blades
blades
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
US412429A
Other languages
English (en)
Inventor
Kurt Henning
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Polysius 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 Polysius AG filed Critical Polysius AG
Application granted granted Critical
Publication of US3910756A publication Critical patent/US3910756A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/10—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material
    • F28C3/12—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid
    • F28C3/18—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid the particulate material being contained in rotating drums
    • 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
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/14—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge
    • F27B7/18—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being movable within the drum
    • 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
    • F27D15/028—Cooling with means to convey the charge comprising a rotary drum

Definitions

  • This invention relates to apparatus for heat treating abrasive material and more particularly to a rotatable drum including material lifting blades removably secured to the inside of the drum.
  • a hollow, material receiving drum is rotated and a hot gas stream is passed through the rotating drum to effect an exchange between the gas stream and the material being treated in the drum.
  • the drum includes lifting blades which raise the material and convey it through the drum, so that a haze of material extends over at least part of the drum crosssection to produce intensive contact of all the particles of material with the treating gas.
  • all the components which come into contact with the erosive material are subject to wear, so that these components have to be replaced from time to time.
  • the lifting blades In order to protect the internal drum wall both from erosion and from overheating by the material, it is known to provide the lifting blades with plate-shaped, blade feet, lying against the internal drum' wall, and of a size such that the blade feet of peripherally adjacent blades are in contact with, and hence shield, the internal drum wall from the material being treated.
  • the parts of the lifting blades which dip into the material are subject to particularly intense wear and will require replacement well before the blade feet require replacement. Since the blade feet are integral with the lifting blades, the known form of lifting blade thus necessarily means that when replacement of the worn lifting blades becomes necessary, a relatively larger part of the lifting blade foot which is scarcely worn, or not at all worn, must also be thrown away or sold as scrap.
  • the invention is'thus based on the problem of providing a drum of the type initially described which is notable for an economical construction of the lifting blades combined with effective covering of the internal drum w'all.
  • this problem is solved by mounting peripherally adjacent lifting blades on the lining periphery at a distance from each other, and providing separate wear plates which protect the internal drum lining from overheating and wear in the area between said lifting blades.
  • the blade feet of each lifting blade can be kept small enough to provide just sufficient size for attaching the lifting blade to the internal wall of the drum.
  • the lifting blade feet can be made substantially planar, or flat, while the wear plates are curved to match the curvature of the internal drum wall.
  • the lifting blades are made largely independent of the drum diameter so that the same lifting blade model can be used for various drum sizes. This provides a considerable simplification and saving of costs in the storage of spare lift- 7 ing blades.
  • FIG. 1 is a cross-sectional view taken through a drum constructed according to the present invention
  • FIG. 2 is an exploded plan view of a lifting blade and an intermediate wear plate to be assembled therewith;
  • FIG. 3 is an enlarged cross-sectional view of a lifting blade with its corresponding wear plate, constructed in accordance with a further embodiment of the invention.
  • Apparatus constructed in accordance with the present invention includes a drum, generally designated 1, for the heat treatment of erosive material, for example for cooling hot cement clinker (not shown).
  • a drum Separably mounted to the internal drum surface or wall 2 are a plurality of circumferentially spaced, identically shaped, material lifting blades 3, each consisting in general of a radially inwardly projecting, material lifting blade wall 4 and of a transversely extending blade foot 5 affixed to the internal drum wall 2.
  • the material lifting blades 3 which are adjacent each other in a peripheral direction are disposed at a distance from each other.
  • the neighbouring or adjacent lifting blades 3 have between them at least one wear plate 6, affixed to the internal drum wall 2, constructed as an intermediate plate or plates extending from the one end of a blade foot 5 to the adjacent end of the blade foot of the next following lifting blade 3.
  • the wear plates 6 protect those areas of the internal drum wall 2, not covered by the lifting blades 3, from the material being treated and in this way they form an overheating and wear shield for the internal drum wall.
  • the lifting blade feet 5 are made substantially flat, while the wear plates 6 are arcuate and match the curvature of the internal drum wall 2.
  • the same type of blade can be used for drums with different internal diameters, since the foot 5 of each lifting blade, which is made exceedingly short in the peripheral direction, is practically independent of diameter. This facilitates the manufacture of the lifting blades since there is no necessity for precisely matching the curvature of the blade feet to the curvature of the internal drum wall and also facilitates the storage of spare lifting blades.
  • the lifting blades and the wear plates 6 could be affixed to the internal drum lining 2 only singly, by screws or pins, so that the feet 5 of the blades would then abut against the corresponding ends of the wear plates 6. It
  • the lifting blades 3 and the wear plates 6 are, however, desirable for the lifting blades 3 and the wear plates 6 to be so related that the blades 3 can be affixed to the internal drum lining 2 by the wear plates 6.
  • the blades 3 could be attached to the internal drum wall by the wear plates 6 in clamp fashion, so that it is then sufficient merely to screw the wear plates 6 to the drum wall (see FIGS. 1 and 2).
  • the clamp-like attachment can be effected in the manner shown from the drawings by a simple overlapping of the co-operating ends of the lifting blades 5 and the wear plates 6.
  • the overlapping parts could, however, equally well have engaging grooves and projections, or a wedge-type structure.
  • the clamp-like attachment of the lifting blades 3 and wear plates 6 can be used for both one-piece and composite wear plates.
  • FIG. 3 A further embodiment of the invention is shown in FIG. 3 and includes a drum 11 having an internal wall 12, internally covered by a plurality of abutting or adjacent wear plates 16, each integrally formed.
  • the wear plates 16 have, in central regions, recesses 17 for snugly receiving radially extending projections a provided on the blade feet 15 of a plurality of generally radially inwardly extending lifting blades 13.
  • the area of each recess 17 is less than the area of the associated lifting blade foot 15.
  • Each projection 15a is provided with a radially extending passage 18 which lies opposite a corresponding bore 19 in the drum casing 11.
  • These bores 18, 19 can then receive connecting bolts (not shown) whereby the lifting blades 13 are afiixed to the drum wall.
  • this attachment also fixes the corresponding wear plate 16 to the internal drum wall 12.
  • each wear plate 16 which in general is matched to the curvature of the internal drum wall 12, has, in the vicinity of its recess 17, a section 160 with a fiat or planar surface and whose dimensions are at least as great as the area of the abutting portion of the associated blade foot 15.
  • This blade foot 15, which in this embodiment is again made substantially flat, can thus lie with a relatively large area on the wear plate 16 and thus press the latter against the internal drum wall 12.
  • the wear plates 19 may be desirable to construct the wear plates 19 with radially projecting ribs 20, 20a on their radially outer sides which faces the internal drum wall 12.
  • the ribs 20a lie in the vicinity of the recess 17 and are disposed directly against the internal drum wall 12, while the ribs 20 which are at the end region, as seen in the peripheral direction, of the wear plate 16 can be somewhat spaced from the internal drum wall 12.
  • This formation of the wear plates 16 permits effective fitting against the internal drum wall 12, especially when subjected to the deformations which can arise due to heat effects. For this reason it will also be desirable to put a small expansion gap 21 between two wear plates 16 adjacent each other in the peripheral direction.
  • the lifting blades and the wear plates are made of different materials. In this way, the various parts of the rotary drum will have an optimum useful life as provided by the invention.
  • Apparatus for the heat treatment of erosive material comprising a rotary drum having a cylindrical wall and adapted to receive material to be treated; a plurality of wear plates on the inner surface of said wall and extending circumferentially about the wall to provide a liner; means for securing said wear plates to said wall, said wear plates being curved to conform substantially to the curvature of said wall and selected ones of said plates being spaced from one another at circumferentially spaced intervals; a plurality of uniform material lifting blades within said drum spaced circumferentially about said wall according to the spacing between said se ected ones of said wear plates; and mounting means carried by each of said blades for mounting the latter on said wall, each of said mounting means comprising a foot occupying the space between said selected ones of said wear plates and having a planar surface confronting said wall, the wear plates on opposite sides of each space overlying the adjacent edge of the associated foot and clamping the latter against said wall, each of said lifting blades extending radially inwardly of said drum and
  • each of said wear plates comprises a pair of members between adjacent lifting blades.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Crushing And Grinding (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
US412429A 1972-11-10 1973-11-02 Heat treating drum Expired - Lifetime US3910756A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722255069 DE2255069B2 (de) 1972-11-10 1972-11-10 Trommel zur thermischen behandlung von schleissendem gut

Publications (1)

Publication Number Publication Date
US3910756A true US3910756A (en) 1975-10-07

Family

ID=5861366

Family Applications (1)

Application Number Title Priority Date Filing Date
US412429A Expired - Lifetime US3910756A (en) 1972-11-10 1973-11-02 Heat treating drum

Country Status (7)

Country Link
US (1) US3910756A (de)
JP (1) JPS5121952B2 (de)
BE (1) BE806213A (de)
DE (1) DE2255069B2 (de)
ES (1) ES420088A1 (de)
FR (1) FR2206486B1 (de)
GB (1) GB1401102A (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4094628A (en) * 1975-01-22 1978-06-13 F. L. Smith & Co. Rotary drum
US4207290A (en) * 1975-10-09 1980-06-10 Pfizer Inc. Flue gas scrubber
US4244656A (en) * 1978-11-29 1981-01-13 Rtl Contactor Holding S.A. Apparatus for contacting liquids and solids with liquids
US4289279A (en) * 1977-02-25 1981-09-15 Trelleborg Ab Mill lining
US4416858A (en) * 1979-06-22 1983-11-22 Rtl Contactor Holding S.A. Contactor
US4422848A (en) * 1982-01-29 1983-12-27 Iowa Manufacturing Company Of Cedar Rapids, Iowa Heat shields for drum aggregate driers and asphaltic drum mixers
US4639216A (en) * 1985-04-25 1987-01-27 Schnupp's Grain Roasting, Inc. Grain roasting machine and method
EP0240575A1 (de) * 1986-03-18 1987-10-14 Giesserei Kohlscheid GmbH L-förmige Hubschaufel für Rohrkühler
US5033863A (en) * 1990-02-06 1991-07-23 Cedarapids, Inc. Method and arrangement of a flight attachment
US5083382A (en) * 1990-12-11 1992-01-28 Gencor Industries Inc. Adjustable flights with dams for rotary dryers
US5203693A (en) * 1991-10-01 1993-04-20 Astec Industries, Inc. Rotary drum dryer having internal flights
US5409577A (en) * 1992-04-13 1995-04-25 Siemens Aktiengesellschaft Carbonization apparatus
US20100226200A1 (en) * 2009-03-04 2010-09-09 Dr. Herfeld Gmbh & Co. Kg Mixing Machine
US20100302898A1 (en) * 2009-05-26 2010-12-02 Dr. Herfeld Gmbh & Co. Kg Mixing Machine
US9968897B2 (en) 2014-04-15 2018-05-15 Dr. Herfeld Gmbh & Co. Kg Mixing machine
US20190101281A1 (en) * 2017-10-02 2019-04-04 Pro-Iroda Industries, Inc. Fire Display Device
US11008713B2 (en) * 2019-10-22 2021-05-18 Astec, Inc. Rotary dryer having notched flights
US20220307205A1 (en) * 2021-03-25 2022-09-29 e5 Engineers, LLC Flight for Asphalt Rotary Dryer

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3119108A1 (de) * 1981-05-14 1982-12-02 O & K Orenstein & Koppel AG, 4600 Dortmund "waermetauscher fuer rieselfaehiges gut"
DE3708224A1 (de) * 1987-03-13 1988-09-22 Krupp Polysius Ag Drehtrommel zum waermeaustausch zwischen feststoffgut und gas
US5975752A (en) * 1998-02-25 1999-11-02 Conoco Inc. Fabricated steel lifter for rotary kiln
US6688884B2 (en) 2002-06-06 2004-02-10 Harbison-Walker Refractories Company Rotary kiln heat exchanger and method of assembling same
DE102010047075A1 (de) 2010-10-01 2012-04-05 Alba 2 Energy Gmbh Verfahren zum Trocknen von Hausmüll sowie Trocknertrommel hierzu
DE102010044129B4 (de) 2010-11-18 2021-02-18 Alba 2 Energy Gmbh Modulare Schottwand für einen Trommeltrockner sowie selbiger und Bausatz hierfür
JP6373635B2 (ja) * 2014-04-30 2018-08-15 Ｊｘ金属株式会社 リフター、リフターの施工方法およびロータリーキルン

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1986530A (en) * 1932-09-10 1935-01-01 Alexander M Read Grinding mill
US2084713A (en) * 1936-03-07 1937-06-22 Quigley Co Rotary kiln
US2704636A (en) * 1955-03-22 Weston
US3042323A (en) * 1958-11-17 1962-07-03 Newton L Hall Lifter-liner lining for rotary ball mills
US3191874A (en) * 1963-07-30 1965-06-29 Mine And Smelter Supply Compan Disintegrators
US3318537A (en) * 1963-11-22 1967-05-09 Trelleborgs Gummifabriks Ab Rotary grinding drum with panel-like lining elements
US3592454A (en) * 1969-08-07 1971-07-13 California Portland Cement Co Formless installation of materials lifters and kiln lining
US3717937A (en) * 1971-04-19 1973-02-27 S Thompson Flighting for dehydrator drum
US3807936A (en) * 1972-04-13 1974-04-30 Polysius Ag Blade lifter especially for strongly abrasive substances
US3853458A (en) * 1973-04-09 1974-12-10 Polysius Ag Rotary drum for the heat treatment of strongly erosive material
US3869247A (en) * 1973-02-14 1975-03-04 Kloeckner Humboldt Deutz Ag Cooling pipe for use in satellite coolers of rotary kilns

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704636A (en) * 1955-03-22 Weston
US1986530A (en) * 1932-09-10 1935-01-01 Alexander M Read Grinding mill
US2084713A (en) * 1936-03-07 1937-06-22 Quigley Co Rotary kiln
US3042323A (en) * 1958-11-17 1962-07-03 Newton L Hall Lifter-liner lining for rotary ball mills
US3191874A (en) * 1963-07-30 1965-06-29 Mine And Smelter Supply Compan Disintegrators
US3318537A (en) * 1963-11-22 1967-05-09 Trelleborgs Gummifabriks Ab Rotary grinding drum with panel-like lining elements
US3592454A (en) * 1969-08-07 1971-07-13 California Portland Cement Co Formless installation of materials lifters and kiln lining
US3717937A (en) * 1971-04-19 1973-02-27 S Thompson Flighting for dehydrator drum
US3807936A (en) * 1972-04-13 1974-04-30 Polysius Ag Blade lifter especially for strongly abrasive substances
US3869247A (en) * 1973-02-14 1975-03-04 Kloeckner Humboldt Deutz Ag Cooling pipe for use in satellite coolers of rotary kilns
US3853458A (en) * 1973-04-09 1974-12-10 Polysius Ag Rotary drum for the heat treatment of strongly erosive material

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4094628A (en) * 1975-01-22 1978-06-13 F. L. Smith & Co. Rotary drum
US4207290A (en) * 1975-10-09 1980-06-10 Pfizer Inc. Flue gas scrubber
US4289279A (en) * 1977-02-25 1981-09-15 Trelleborg Ab Mill lining
US4244656A (en) * 1978-11-29 1981-01-13 Rtl Contactor Holding S.A. Apparatus for contacting liquids and solids with liquids
US4416858A (en) * 1979-06-22 1983-11-22 Rtl Contactor Holding S.A. Contactor
US4422848A (en) * 1982-01-29 1983-12-27 Iowa Manufacturing Company Of Cedar Rapids, Iowa Heat shields for drum aggregate driers and asphaltic drum mixers
US4639216A (en) * 1985-04-25 1987-01-27 Schnupp's Grain Roasting, Inc. Grain roasting machine and method
EP0240575A1 (de) * 1986-03-18 1987-10-14 Giesserei Kohlscheid GmbH L-förmige Hubschaufel für Rohrkühler
US5033863A (en) * 1990-02-06 1991-07-23 Cedarapids, Inc. Method and arrangement of a flight attachment
US5083382A (en) * 1990-12-11 1992-01-28 Gencor Industries Inc. Adjustable flights with dams for rotary dryers
US5203693A (en) * 1991-10-01 1993-04-20 Astec Industries, Inc. Rotary drum dryer having internal flights
US5409577A (en) * 1992-04-13 1995-04-25 Siemens Aktiengesellschaft Carbonization apparatus
US20100226200A1 (en) * 2009-03-04 2010-09-09 Dr. Herfeld Gmbh & Co. Kg Mixing Machine
US8678639B2 (en) 2009-03-04 2014-03-25 Dr. Herfeld Gmbh & Co. Kg Mixing machine
US20100302898A1 (en) * 2009-05-26 2010-12-02 Dr. Herfeld Gmbh & Co. Kg Mixing Machine
US8979354B2 (en) * 2009-05-26 2015-03-17 Dr. Herfeld Gmbh & Co. Kg Mixing machine
US9968897B2 (en) 2014-04-15 2018-05-15 Dr. Herfeld Gmbh & Co. Kg Mixing machine
US20190101281A1 (en) * 2017-10-02 2019-04-04 Pro-Iroda Industries, Inc. Fire Display Device
US11008713B2 (en) * 2019-10-22 2021-05-18 Astec, Inc. Rotary dryer having notched flights
US20220307205A1 (en) * 2021-03-25 2022-09-29 e5 Engineers, LLC Flight for Asphalt Rotary Dryer
US12134864B2 (en) * 2021-03-25 2024-11-05 e5 Engineers, LLC Flight for asphalt rotary dryer

Also Published As

Publication number Publication date
GB1401102A (en) 1975-07-16
DE2255069B2 (de) 1977-03-03
JPS4978677A (de) 1974-07-29
DE2255069A1 (de) 1974-05-30
BE806213A (fr) 1974-02-15
FR2206486A1 (de) 1974-06-07
FR2206486B1 (de) 1975-03-21
ES420088A1 (es) 1976-03-16
JPS5121952B2 (de) 1976-07-06

Similar Documents

Publication Publication Date Title
US3934828A (en) Wear-resistant wall linings for shells of mills and like apparatuses
FI60581B (fi) Malningsskiva
KR20010082318A (ko) 필드 교체가능한 헬리컬 플라이트
US3853458A (en) Rotary drum for the heat treatment of strongly erosive material
AU584091B2 (en) Segmented seal for rotary equipment
US3680799A (en) Linings for rotary mills
US2909335A (en) Resilient and bonded drum lining
NO156536B (no) Sporstampe-nivelleringsmaskin med stabiliseringsaggregat.
US2476505A (en) Lining for ball mills
US4422848A (en) Heat shields for drum aggregate driers and asphaltic drum mixers
CS202024B2 (en) Device for mounting roll ring on the surface of a rotary tube,especially cylindrical rotary kiln
JPS586087B2 (ja) 回転ドラム
EP1060354B1 (de) Hergestellter heber aus stahl für drehrohrofen
US1895348A (en) Air seal for rotary drums
WO1986002150A1 (en) Drier and lifting element for same
US3289954A (en) Disk refiner
JP6238434B2 (ja) ディスク構造、ディスク用プロテクタ及びディスク型処理装置
US4664324A (en) Grinding mill liner plate support
US3843064A (en) Crusher blades of a sinter discharge part of a sintering machine
US20240390912A1 (en) Grate plate for a pulp lifter of a grinding mill
US4727658A (en) Drying machine
US2633778A (en) Removable grinding lining for jordan engines
US2230601A (en) Rotary kiln
US4508503A (en) Intake assembly for rotary drums
KR970000370A (ko) 폐기물 건조장치