US3844709A - Rotary kiln with cooling cells - Google Patents

Rotary kiln with cooling cells Download PDF

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Publication number
US3844709A
US3844709A US00430401A US43040174A US3844709A US 3844709 A US3844709 A US 3844709A US 00430401 A US00430401 A US 00430401A US 43040174 A US43040174 A US 43040174A US 3844709 A US3844709 A US 3844709A
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US
United States
Prior art keywords
kiln
cooling cell
tube section
rotary kiln
feed channel
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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
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US00430401A
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English (en)
Inventor
G Ghestem
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.)
Fives Cail Babcock SA
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Fives Cail Babcock SA
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Filing date
Publication date
Application filed by Fives Cail Babcock SA filed Critical Fives Cail Babcock SA
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Publication of US3844709A publication Critical patent/US3844709A/en
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Classifications

    • 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
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/38—Arrangements of cooling devices
    • F27B7/40—Planetary coolers

Definitions

  • a rotary kiln comprises a kiln body and a cooling cell [21] Appl 430401 body mounted on the kiln body for rotation therewith. A feed channel interconnects the kiln and cooling cell [30] Foreign Application Priority Data bodies in a tight manner and provides communication Jan.
  • the feed channel includes an ex- 52 us. Cl. 432/80 pansible bellows Sleeve having respective ends tightly 51 Int. Cl. F27b 7/38 affixed respectively to the kiln and the Cooling cell
  • References Cited tion being positioned withinthe bellows sleeve and having a refractory interior walhMaterial falling out UNITED STATES PATENTS of the rotary kiln body through the port is guided by 331333 ill???
  • the present invention relates to tubular rotary kilns equipped with cooling tubes or cells which are disposed around the output end of the kiln, with their axes substantially parallel to the rotary axis of the kiln body.
  • the output end of the kiln body defines ports whence feed channels lead into the cooling cell bodies so that material to be cooled falls through the ports into the cells when the same are rotated into a position below the kiln body. Cooling air blown across the cells passes into the kiln body and is used therein as secondary heating air, having been brought to an elevated temperature by heat exchange with the material in the cell which is being cooled by the air.
  • the feed channels must provide a fluid-tight connection between the kiln and cooling cell bodies while permitting their relative displacement due to the differences in expansion between the cooling cell and kiln bodies.
  • a feed channel including an expansible bellows sleeve having respective ends fluid-tightly affixed respectively to the kiln and the cooling cell body, and a tube section having respective ends.
  • the tube section is positioned within the bellows sleeve and has a refractory interior wall, and one end of the tube section is affixed to a selected one of the bodies while the other end is free. Material falling out of the rotary kiln body through the port is guided by the tube section into the cooling cell.
  • FIG. 1 is a cross sectional view showing the inlet of a cell of the rotary kiln, with its feed channel and a portion of the kiln, the section being taken along a plane containing the axis of the kiln and the cell;
  • FIG. 2 is a similar half-view, on an enlarged scale, of the feed channel of FIG. 1;
  • FIG. 3 is a view similar to that of FIG. 1 and showing another embodiment of this invention.
  • FIG. 4 is a view similar to that of FIG. 2, showing the feed channel of the embodiment of FIG. 3;
  • FIG. 5 is a view similar to that of FIG. 1 and showing a third embodiment.
  • the rotary kiln is represented by its refractory wall 12 lining metallic shell 11 and has affixed thereto a plurality of cooling cells represented in the drawing be cell 10, the axis of rotation of the tubular kiln and the axes of the cells being substantially parallel to each other.
  • the cells are affixed to the kiln at its outlet end and turn with the kiln about its rotary axis.
  • FIG. 1 shows only one of the support rings 14 positioned near the inlet end of the cell.
  • the other support ring (not illustrated) is linked to the collar of the kiln by a system of pivoted rods or like means suitable to permit the cell to move freely in the direction of its longitudinal axis.
  • Cell 10 is constituted by a generally cylindrical body having a frusto-conical inlet end 18.
  • the interior wall of the cell, or at least its inlet end, is lined with a refractory material.
  • the refractory material lining the interior of the frusto-conical inlet end 18 of the cell is constituted by refractory bricks whose long wear is assured by the archway effect produced by the shape of the inlet end.
  • the large base of the frusto-conical inlet end is adjacent the cylindrical main body of cell 10 while its small base is adjacent the feed channel connecting the cell to the interior of the kiln.
  • the axis of the frusto-conical inlet end is inclined in respect of the axis of the cylindrical main body, i.e., it encloses an obtuse angle therewith, and the bases of the frusto-conical inlet end 18 extend in two planes inclined in respect of the axis of the main body, i.e., they enclose acute angles with this axis. In this manner, material which falls into the cell when the same is in its lower path of revolution about the rotary axis of the kiln moves away from the inlet end of the cell when the cell rises again.
  • the cell has a cylindrical end portion 20 in alignment with tubular section 26 constituting the feed channel for the cell.
  • the feed channel is adjacent and in communication with port 24 in the kiln wall.
  • the material fed from the interior of the kiln into the .cells for cooling therein passes through the feed channel whose axis is inclined in respect of the axis of the port downstream thereof, i.e. the axis of the feed channel 26 encloses an obtuse angle with the axis of port 24.
  • the interior of the feed channel is lined with refractory material.
  • the cooling cell body and the feed'channel comprise a metallicouter shell 13 and 25, respectively, and a refractory lining.
  • the outer end of cylindrical end portion 20 carries flange 22 and one end of tubular section 26 carries cooperating flange 28, the two flanges being affixed to each other by bolts 24 to interconnect the cylindrical end portion 20 of cell 10 with feed channel 26.
  • the opposite end of tubular section 26 is free and slightly spaced from flange 30 affixed to collar 11 of the kiln about port 24.
  • the space between the opposite end of tubular section 26 and flange 30 is interiorly closed by a refractory steel ring 32. Steel ring 32 is clamped in position between flange 30 and clamping ring 34 held together by bolts 16.
  • This refractory steel ring protects the refractory lining of tubular section 26 at the inlet end and prevents the escape of granular material through the space between the tubular section and port 24
  • the tubular feed channel section is surrounded by an expansible bellows 36 whose opposite ends are soldered, welded or otherwise attached to flange 28 and clamping ring 34, respectively.
  • This bellows assures a tight connection between the kiln and the cell and is formed by two bellows portions 38, 38 at the respective ends of the bellows and interconnected by a sleeve 40.
  • the two bellows portions extend in respective planes intersecting in line A outside the feed channel.
  • the planes of contact between flanges 22 and 28, on the one hand, and between flange 30 and clamping ring 24, on the other hand, also intersect along a line outside the feed channel and at the same side as the cell in respect of the feed channel.
  • the tubular section 26 is positioned entirely between these two planes, which facilitates the assembly and disassembly of the tubular section.
  • Port 24 is lined with a refractory steel sleeve 42 to protect the refractory lining of the kiln from wear and .tear.
  • FIGS. 3 and 4 differs from that of H68. 1 and 2 only in the manner of mounting the feed channel, like parts being designated by like reference numerals in both embodimentsfexcept that the numerals in FIGS. 3 and 4 are primed.
  • tubular feed channel section 26 is not spaced from flange 30' but carries flange 44 affixed to flange 30 carried by kiln 12.
  • the other end of the tubular section is slightly spaced from flange 22' of cell 10 and this space is interiorly closed by refractory steel ring 32'.
  • This steel ring is affixed to the other end of the tubular section and gasket 46 is positioned between ring 32' and the adjacent end of cylindrical portion 20' of the cell to provide a tight joint between the cell and the feed channel.
  • bellows 36' are suitably attached to flanges 50 and 52 respectively affixed to flanges 22' and 44.
  • FIG. differs from that of FIGS. 3 and 4 only in the orientation of the feed channel and the position of the bellows, like parts again being designated by like reference numerals in both embodiments to dispense with the need for a repetition of the description, except that the numerals in FIG. 5 are double primed.
  • the axis of the feed channel 26" is perpendicular to the rotary axis of the kiln, i.e. in alignment with the axis of port 24", and the bellows portions 38", 38" extend in parallel planes perpendicular to the axis of the feed channel.
  • supplementary bellows portion may be provided intermediate the end portions 38 of the bellows.
  • a rotary kiln comprising 1. a kiln body having an output end and defining a port at the output end,
  • feed channel including a. an expansible bellows sleeve'having respective ends fluid-tightly affixed respectively to the kiln and the cooling cell body, and
  • a tube section having respective ends, the tube section being positioned within the bellows sleeve and having a refractory interior wall, and one of the tube section ends being affixed to a selected one of the bodies whilethe other end is free, material falling out of the rotary kiln body through the port being guided by the tube section into the cooling cell.
  • the bellows sleeve comprises two bellows portions at the respective ends of the bellows sleeve and a sleeve portion interconnecting the bellows portions, an support flanges are mounted onthe kiln and cooling cell'bodies respectively, the ends of the bellows sleeve being affixed to the support flanges.
  • the tube section comprises a'metallic shell and an interior lining of refractory material, and a flange on one end of the metallic shell being affixed to the selected body.
  • the cooling cell body comprises a cylindrical body portion and a frustoconical inlet portion lined with refractory material, the fru sto-conical inlet portion of the cooling cell having a large base adjacent the cylindrical body portion thereof and a small base adjacentthe feed channel, the planes wherein the frusto-conical inlet portion bases extend being inclinedin respect of the axis of the cylindrical portion whereby material falling into the cooling cell from the interior of the rotary kiln body when the same is in the lower part of its rotary path is moved away from the inlet portion when the same ascends.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
US00430401A 1973-01-03 1974-01-03 Rotary kiln with cooling cells Expired - Lifetime US3844709A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7300096A FR2212914A5 (da) 1973-01-03 1973-01-03

Publications (1)

Publication Number Publication Date
US3844709A true US3844709A (en) 1974-10-29

Family

ID=9112852

Family Applications (1)

Application Number Title Priority Date Filing Date
US00430401A Expired - Lifetime US3844709A (en) 1973-01-03 1974-01-03 Rotary kiln with cooling cells

Country Status (15)

Country Link
US (1) US3844709A (da)
JP (1) JPS572992B2 (da)
AU (1) AU473737B2 (da)
BE (1) BE809164A (da)
BR (1) BR7400017D0 (da)
CA (1) CA1006349A (da)
CH (1) CH583405A5 (da)
DE (1) DE2400069C2 (da)
DK (1) DK135060B (da)
FR (1) FR2212914A5 (da)
GB (1) GB1438611A (da)
IT (1) IT1012113B (da)
SE (1) SE401558B (da)
YU (1) YU35921B (da)
ZA (1) ZA7432B (da)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975147A (en) * 1974-05-17 1976-08-17 Polysius Ag Rotary kiln
US3994677A (en) * 1974-04-17 1976-11-30 Polysius Ag Rotary kiln with planetary coolers
US4193759A (en) * 1977-01-25 1980-03-18 Polysius Ag Rotary kiln with a plurality of planetary cooling tubes
EP0032010A2 (en) * 1980-01-02 1981-07-15 F.L. Smidth & Co. A/S Rotary kiln with planetary cooler tube outlets
CN112897912A (zh) * 2021-01-18 2021-06-04 南京凯盛国际工程有限公司 一种用于篦式冷却机风室在线检修的过渡舱

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2412780A1 (fr) * 1977-12-23 1979-07-20 Creusot Loire Dispositif de protection d'un conduit debouchant dans une enceinte
EP0015350B1 (fr) * 1979-03-13 1981-07-01 Creusot-Loire Entreprises Dispositif de protection d'un conduit débouchant dans une enceinte
JPS61198493U (da) * 1985-05-31 1986-12-11
JPS6337791U (da) * 1986-08-27 1988-03-11
JPH0545750Y2 (da) * 1987-04-15 1993-11-25

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2472497A (en) * 1946-01-28 1949-06-07 Gas Machinery Co Furnace
US2845259A (en) * 1954-10-07 1958-07-29 Smidth & Co As F L Combined kiln and cooler
US3502311A (en) * 1967-05-17 1970-03-24 Smidth & Co As F L Coolers for rotary kilns
US3556495A (en) * 1968-01-22 1971-01-19 Smidth & Co As F L Rotary kilns with planetary coolers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1322111A (en) * 1971-05-25 1973-07-04 Smidth & Co As F L Rotary kiln

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2472497A (en) * 1946-01-28 1949-06-07 Gas Machinery Co Furnace
US2845259A (en) * 1954-10-07 1958-07-29 Smidth & Co As F L Combined kiln and cooler
US3502311A (en) * 1967-05-17 1970-03-24 Smidth & Co As F L Coolers for rotary kilns
US3556495A (en) * 1968-01-22 1971-01-19 Smidth & Co As F L Rotary kilns with planetary coolers

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994677A (en) * 1974-04-17 1976-11-30 Polysius Ag Rotary kiln with planetary coolers
US3975147A (en) * 1974-05-17 1976-08-17 Polysius Ag Rotary kiln
US4193759A (en) * 1977-01-25 1980-03-18 Polysius Ag Rotary kiln with a plurality of planetary cooling tubes
EP0032010A2 (en) * 1980-01-02 1981-07-15 F.L. Smidth & Co. A/S Rotary kiln with planetary cooler tube outlets
EP0032010A3 (en) * 1980-01-02 1982-01-13 F.L. Smidth & Co. A/S Rotary kiln with planetary cooler tube outlets
CN112897912A (zh) * 2021-01-18 2021-06-04 南京凯盛国际工程有限公司 一种用于篦式冷却机风室在线检修的过渡舱
CN112897912B (zh) * 2021-01-18 2024-01-30 中材国际智能科技有限公司 一种用于篦式冷却机风室在线检修的过渡舱

Also Published As

Publication number Publication date
GB1438611A (en) 1976-06-09
CH583405A5 (da) 1976-12-31
AU6417074A (en) 1975-07-03
DE2400069A1 (de) 1974-07-04
JPS572992B2 (da) 1982-01-19
DK135060C (da) 1977-08-01
JPS4998303A (da) 1974-09-18
YU35921B (en) 1981-08-31
SE401558B (sv) 1978-05-16
BR7400017D0 (pt) 1974-08-15
DK135060B (da) 1977-02-28
FR2212914A5 (da) 1974-07-26
DE2400069C2 (de) 1985-04-25
BE809164A (fr) 1974-04-16
AU473737B2 (en) 1976-07-01
CA1006349A (fr) 1977-03-08
IT1012113B (it) 1977-03-10
ZA7432B (en) 1974-11-27
YU674A (en) 1981-02-28

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