US1942140A - Attemperator for rotary kilns and the like - Google Patents

Attemperator for rotary kilns and the like Download PDF

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Publication number
US1942140A
US1942140A US592427A US59242732A US1942140A US 1942140 A US1942140 A US 1942140A US 592427 A US592427 A US 592427A US 59242732 A US59242732 A US 59242732A US 1942140 A US1942140 A US 1942140A
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US
United States
Prior art keywords
kiln
gaseous medium
shell
heat
attemperator
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
US592427A
Other languages
English (en)
Inventor
Johan S Fasting
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 US1942140A publication Critical patent/US1942140A/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
    • F27B7/14—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge
    • F27B7/16—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means
    • F27B7/161—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising projections jutting out from the wall
    • F27B7/162—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising projections jutting out from the wall the projections consisting of separate lifting elements, e.g. lifting shovels
    • 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
    • F27B7/16—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means
    • F27B7/161—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising projections jutting out from the wall
    • 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
    • F27B7/16—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means
    • F27B7/166—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising chains

Definitions

  • This invention has been developed and will be described with particular reference to the interchange of heat in rotary kilns as between the material being treated, such as cement raw materials, passing in one direction through the kiln, and a gaseous medium, such as hot air or the hot combustion gases from the lower part of the kiln, but it will be understood that the invention is capable of application to other industrial processes, in which an interchange of heat between the material treated and an aeriform fluid or gaseous medium is to be eiiected.
  • the heat transmitting members are secured to the shell of the kiln about its inner periphery, are projected somewhat toward the axis of the kiln, are so formed as to permit the passage of the gaseous medium and of the material in an axial direction, are thin so that their temperature will be quickly and materially reduced as they pass through the material in the lower segment of the kiln, and are so shaped that as they pass through such material they will stir it up somewhat, but without causing the material to be cascaded through the medium with the consequent and highly objectionable carrying on and ultimate discharge from the stack of the finer particles in the form of dust.
  • Figure 1 is a view in longitudinal section of a portion of a kiln which embodies the invention.
  • Figure 2 is a view of the same in transverse sectional elevation.
  • Figures 3 and l are views similar respectively to Figures 1 and 2, but showing a slightly different embodiment of the invention.
  • the kiln has a metal shell which, as usual, is provided with a refractory lining 2, which may be formed in any usual or suitable manner.
  • a refractory lining 2 which may be formed in any usual or suitable manner.
  • attemperating or heat transmitting members 3 are shown as sectional rings which are secured to the kiln in such manner that the refractory lining of the kiln is not weakened or subjected to breaking stresses through the expansion or contraction of the metallic members.
  • each of such members is formed of an annular series of independent sections 3 each section being formed with a foot 3 which bears against and is secured to the shell 1 of the kiln as by a bolt 4 each section being also formed with extensions 3 which bear upon the lining, being preferably set into the same slightly, as clearly lib shown in Figure 2, but without penetrating the lining deeply.
  • These members being secured to the inner periphery of the shell, are projected inwardly therefrom toward the axis of the kiln and they are also shown as notched at intervals, nearly or quite to the lining, as at 3 so that they do not interfere materially with the passage either of the material or of the aeriform or gaseous medium longitudinally through the kiln, They are shown as disposed substantially transverse or at right angles to the axis of the kiln but obviously they might be inclined or otherwise disposed or formed so as to promote or retard the passage of the material as may be desired.
  • the heat transmitting members have no lifting action on the material and that the material therefore is not permitted to fall or to be cascaded through the gaseous medium with the consequent release of the finer particles in, the form of dust to be carried on with the hot gases through the kiln and into the stack from which the dust would be spread upon the surrounding country to its detriment besides loss of material.
  • the shell 1 is provided with a refractory lining 2 and the attemperators or heat transmitting bodies 3 being formed, as in the construction shown in Figures 1 and 2, of an annular series of independent sections 3, each with a foot 3 to bear against the shell and with extensions 3! tobear against the refractory lining, substantially as described with respect to Figures 1 and 2, are secured to the inner periphery ofv the mill, project inward toward. the axis, being cut away so as to offer little obstruction to the passage of the material or gaseous medium and are provided each at its inner end with a flange or fin 5 which is extended generally in an axial direction and at a small angle to theshell,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US592427A 1931-04-11 1932-02-11 Attemperator for rotary kilns and the like Expired - Lifetime US1942140A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR715109T 1931-04-11

Publications (1)

Publication Number Publication Date
US1942140A true US1942140A (en) 1934-01-02

Family

ID=9088743

Family Applications (1)

Application Number Title Priority Date Filing Date
US592427A Expired - Lifetime US1942140A (en) 1931-04-11 1932-02-11 Attemperator for rotary kilns and the like

Country Status (5)

Country Link
US (1) US1942140A (de)
AT (1) AT133992B (de)
CH (1) CH161776A (de)
FR (1) FR715109A (de)
GB (1) GB385153A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3026627A (en) * 1960-01-04 1962-03-27 R N Corp Rotary cylindrical heat transfer device
CN115950247A (zh) * 2022-12-09 2023-04-11 江苏鹏飞集团股份有限公司 一种锂矿焙烧回转窑

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2307108C3 (de) * 1973-02-14 1985-07-11 Klöckner-Humboldt-Deutz AG, 5000 Köln Hubschaufel für Kühlrohre mit feuerfester Innenauskleidung
US4060118A (en) * 1976-02-17 1977-11-29 Alumax Mill Products, Inc. Recovering chloride flux salts for aluminum
DE3708224A1 (de) * 1987-03-13 1988-09-22 Krupp Polysius Ag Drehtrommel zum waermeaustausch zwischen feststoffgut und gas
JP5569258B2 (ja) * 2010-08-26 2014-08-13 宇部興産株式会社 電極材料の連続製造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3026627A (en) * 1960-01-04 1962-03-27 R N Corp Rotary cylindrical heat transfer device
CN115950247A (zh) * 2022-12-09 2023-04-11 江苏鹏飞集团股份有限公司 一种锂矿焙烧回转窑

Also Published As

Publication number Publication date
GB385153A (en) 1932-12-22
FR715109A (fr) 1931-11-26
CH161776A (de) 1933-05-31
AT133992B (de) 1933-06-26

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