US3790335A - Lined coolers for rotary kilns - Google Patents

Lined coolers for rotary kilns Download PDF

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Publication number
US3790335A
US3790335A US00242213A US3790335DA US3790335A US 3790335 A US3790335 A US 3790335A US 00242213 A US00242213 A US 00242213A US 3790335D A US3790335D A US 3790335DA US 3790335 A US3790335 A US 3790335A
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US
United States
Prior art keywords
junction piece
lining
sections
kiln
monolithic
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
US00242213A
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English (en)
Inventor
V Andreassen
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.)
FLSmidth and Co AS
Original Assignee
FLSmidth and Co AS
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 FLSmidth and Co AS filed Critical FLSmidth and Co AS
Application granted granted Critical
Publication of US3790335A publication Critical patent/US3790335A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 specially adapted for rotary-drum furnaces
    • F27B7/38—Arrangements of cooling devices
    • F27B7/40—Planetary coolers

Definitions

  • a junction piece for use in rotary kilns of yp v having a plurality of planetary cooler tubes is dis- [22] ES. Cll. ...i$..7432/80 closed in which the lining of the junction piece "t. C .v' 2 b l at least in t on o mo l thic ateri Field of Search 432/80, 78, 252
  • This invention relates to rotary kilns of the type which are equipped with cooler tubes arranged in planetary fasihion around the outlet end of the kiln for rotation with it to receive and cool the product such as cement clinker from the kiln by air flowing through the tubes in countercurrent to the product.
  • cooler tubes are generally connected to the kiln by radial chutes through which the product falls and slides.
  • the kiln and the cooler tubes are formed by metal shells lined by heat-resisting material. At least in the hot end of each cooler tube the lining consists conventionally of fire bricks and is normally interrupted by iron sections which are welded to the walls of the tube and abut against the sides of the adjacent bricks.
  • the hot ends of the cooler tubes are subjected in operation to considerable thermal and mechanical stresses, the thermal stresses arising from continually alternating heating and cooling, and the mechanical stresses from the action of the hot product from the kiln, which partly slides down and partly falls into the cooler tubes.
  • the thermal stresses arising from continually alternating heating and cooling
  • the mechanical stresses from the action of the hot product from the kiln which partly slides down and partly falls into the cooler tubes.
  • the gaps are formed on cooling, and some of the kiln product may enter these gaps.
  • the gaps tend to close and jam the kiln product, with the result that the brick lining breaks.
  • each cooler tube is connected to the kiln by a separate junction piece registering at one end with an opening in the kiln and being secured at the other end to the cooler tube proper, part at least of the lining of each junction piece being monolithic.
  • the monolithic lining consists of a mass of heatresistant material cast or tamped into position and hydraulically or chemically set.
  • the mass forming the monolithic lining may advantageously be anchored in position by being reinforce welded to the shell of the junction piece and embedded in the mass.
  • the whole lining mayadvantageously be monolithic, since although it may not have the mechanical strength of a fire brick it will resist wearing down for a longer time than a fire brick lining will resist destruction by crushing.
  • the lining may be composite.
  • it may consist, in part, of sections of fire bricks interrupted by monolithic sections which allow of expansion or contraction of the fire brick sections without presenting the disadvantage that gaps open between them and the fire bricksections on cooling.
  • the monolithic mass may be composed of any suitable refractory material, for example, sand or crushed brick, and may be set hydraulically, in which case aluminous cement may advantageously be used as a binding agent, or may be set chemically, in which case phosphoric acid may advantageously be used as the binding agent.
  • aluminous cement may advantageously be used as a binding agent
  • phosphoric acid may advantageously be used as the binding agent.
  • FIG. 1 shows diagrammatically part of a kiln and some planetary cooling tubes
  • FIG. 2 is a diagrammatic section on the line 2-2 in FIG. 1;
  • FIG. 3 is a cross-section on the line 3-3 in FIG. 2.
  • FIG. 1 shows the general arrangement of typical planetary cooler tubes spaced around a kiln 1. As shown in FIG. 2, the kiln 1 has openings 17 in its wall and hollow spigots 2 around these openings. Junction pieces 3, each including a radial chute 4, are mounted to register with the openings 17, and, each junction piece also includes a part 18 'with a mouth that registers with the corresponding cooler tube.
  • the cooler tube 5 is lined by fire brick 6, and it has an end flange 19 which mates with a corresponding flange 20 on the junction piece 3, the junction piece being held firmly in position by bolts passing through the flanges 19 and 20.
  • the kiln shell 7 is lined by fire brick 8, and the opening 17 is similarly lined by fire brick 21.
  • the junction piece is not actually secured to the spigot 2, but its end lies within a ring 22 which is bolted to the spigot 2, the arrangement permitting radial expansion and contraction of the chute 4 on heating and cooling. At ,what may be regarded as the corner 23 the junction piece presents a flat lens-shaped surface externally.
  • the junction piece shown is lined partly monolithically and partly of fire brick.
  • Fire brick sections are indicated generally by reference numerals 9, 10, 11 and 12, and monolithic sections by reference numeral 13.
  • FIG. 3 the parts of the lining that consist of fire brick and that are visible to the eye of an observer at the section line 3-3 are indicated by intersecting lines, while those parts that are monolithic are shown plain.
  • Iron reinforcement members 14, 15 and 16 are welded to the shell of the junctionpiece and embedded in the adjacent monolithic material.
  • the lining is a composite one comprising partly fire brick and partly a monolithic material, it is to be recognized that the entire lining may be monolithic.
  • At least one junction piece having first and second open ended sections substantially perpendicular to each other, said first section being flanged and secured by bolt means to the corresponding cooler tube with the open end in communication therewith, and said second section communicates with an opening in the kiln and extends substantially radially from the kiln to the first section type having a plurality of 4 monolithic sections of the lining.
  • junction piece according to claim 3 including retaining members for the fire brick sections of the lining embedded in the adjacent monolithic material.
  • junction piece according to claim 2 including at least one reinforcement member embedded in the monolithic sections of the lining.
  • junction piece according to claim 4 including retaining members for the fire brick sections of the lining embedded in the adjacent monolithic material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Furnace Details (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
US00242213A 1971-04-08 1972-04-07 Lined coolers for rotary kilns Expired - Lifetime US3790335A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9077/71A GB1292089A (en) 1971-04-08 1971-04-08 Coolers for rotary kilns

Publications (1)

Publication Number Publication Date
US3790335A true US3790335A (en) 1974-02-05

Family

ID=9864924

Family Applications (1)

Application Number Title Priority Date Filing Date
US00242213A Expired - Lifetime US3790335A (en) 1971-04-08 1972-04-07 Lined coolers for rotary kilns

Country Status (13)

Country Link
US (1) US3790335A (fr)
JP (1) JPS5434779B1 (fr)
AU (1) AU462341B2 (fr)
BE (1) BE781820A (fr)
BR (1) BR7202057D0 (fr)
CA (1) CA972150A (fr)
DE (1) DE2216781A1 (fr)
ES (1) ES401542A1 (fr)
FR (1) FR2136270A5 (fr)
GB (1) GB1292089A (fr)
IT (1) IT950979B (fr)
SE (1) SE383202B (fr)
ZA (1) ZA722123B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3920381A (en) * 1973-02-01 1975-11-18 Polysius Ag Rotary furnace having a planetary cooler
US3927960A (en) * 1971-04-19 1975-12-23 Smidth & Co As F L Rotary kiln
US4193759A (en) * 1977-01-25 1980-03-18 Polysius Ag Rotary kiln with a plurality of planetary cooling tubes
US4243384A (en) * 1978-04-11 1981-01-06 F. L. Smidth & Company Rotary kiln

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6514254B2 (ja) 2017-03-13 2019-05-15 株式会社東芝 把持ツールおよび把持システム

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564497A (en) * 1947-11-26 1951-08-14 Gen Electric Combustion chamber liner
US2805633A (en) * 1953-11-27 1957-09-10 Mick A Naulin Incinerator wall construction
US3502311A (en) * 1967-05-17 1970-03-24 Smidth & Co As F L Coolers for rotary kilns

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564497A (en) * 1947-11-26 1951-08-14 Gen Electric Combustion chamber liner
US2805633A (en) * 1953-11-27 1957-09-10 Mick A Naulin Incinerator wall construction
US3502311A (en) * 1967-05-17 1970-03-24 Smidth & Co As F L Coolers for rotary kilns

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3927960A (en) * 1971-04-19 1975-12-23 Smidth & Co As F L Rotary kiln
US3920381A (en) * 1973-02-01 1975-11-18 Polysius Ag Rotary furnace having a planetary cooler
US4193759A (en) * 1977-01-25 1980-03-18 Polysius Ag Rotary kiln with a plurality of planetary cooling tubes
US4243384A (en) * 1978-04-11 1981-01-06 F. L. Smidth & Company Rotary kiln

Also Published As

Publication number Publication date
BR7202057D0 (pt) 1973-05-10
AU4089672A (en) 1973-10-11
BE781820A (fr) 1972-07-31
SE383202B (sv) 1976-03-01
FR2136270A5 (fr) 1972-12-22
IT950979B (it) 1973-06-20
DE2216781A1 (de) 1972-10-19
CA972150A (en) 1975-08-05
AU462341B2 (en) 1975-06-19
ZA722123B (en) 1972-12-27
GB1292089A (en) 1972-10-11
ES401542A1 (es) 1975-09-01
JPS5434779B1 (fr) 1979-10-29

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