FR2272359A1 - Plant for calcining cement - where sec. air from the cooler is fed to supplementary burner located upstream of the furnace - Google Patents

Plant for calcining cement - where sec. air from the cooler is fed to supplementary burner located upstream of the furnace

Info

Publication number
FR2272359A1
FR2272359A1 FR7417834A FR7417834A FR2272359A1 FR 2272359 A1 FR2272359 A1 FR 2272359A1 FR 7417834 A FR7417834 A FR 7417834A FR 7417834 A FR7417834 A FR 7417834A FR 2272359 A1 FR2272359 A1 FR 2272359A1
Authority
FR
France
Prior art keywords
air
sec
cooler
furnace
fed
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.)
Granted
Application number
FR7417834A
Other languages
French (fr)
Other versions
FR2272359B3 (en
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
Original Assignee
Fives Cail Babcock SA
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 Fives Cail Babcock SA filed Critical Fives Cail Babcock SA
Priority to FR7417834A priority Critical patent/FR2272359A1/en
Publication of FR2272359A1 publication Critical patent/FR2272359A1/en
Application granted granted Critical
Publication of FR2272359B3 publication Critical patent/FR2272359B3/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
    • C04B7/434—Preheating with addition of fuel, e.g. calcining
    • 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
    • F27B7/2016—Arrangements of preheating devices for the charge
    • F27B7/2025—Arrangements of preheating devices for the charge consisting of a single string of cyclones

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

Installation for the high temp. calcining of a powdered matl. comprises an exchanger head for preheating; a calcining furnace; a cooler; and upstream of the furnace, a supplementary burner fed with sec. air from the cooler. Means are provided for subjecting the sec. air to the thrust of a propellant moving at high speed. The propellant is pref. prim. air feeding the burner, or the exhaust gas leaving the furnace. The pupe carrying the sec. air from the cooler is pref. connected to a duct located between the furnace and the heat exchanger via one or two tuyeres contg. pipes for injecting the fuel, and several alternatives are described. Ensures that a large vol. of sec. air at 700-800 degrees C. obtd. from the cooler flows at high speed into the lower part of the heat-exchanger with the object of obtg. quasi-complete removal of carbonates.
FR7417834A 1974-05-22 1974-05-22 Plant for calcining cement - where sec. air from the cooler is fed to supplementary burner located upstream of the furnace Granted FR2272359A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7417834A FR2272359A1 (en) 1974-05-22 1974-05-22 Plant for calcining cement - where sec. air from the cooler is fed to supplementary burner located upstream of the furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7417834A FR2272359A1 (en) 1974-05-22 1974-05-22 Plant for calcining cement - where sec. air from the cooler is fed to supplementary burner located upstream of the furnace

Publications (2)

Publication Number Publication Date
FR2272359A1 true FR2272359A1 (en) 1975-12-19
FR2272359B3 FR2272359B3 (en) 1977-03-18

Family

ID=9139165

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7417834A Granted FR2272359A1 (en) 1974-05-22 1974-05-22 Plant for calcining cement - where sec. air from the cooler is fed to supplementary burner located upstream of the furnace

Country Status (1)

Country Link
FR (1) FR2272359A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0002054A1 (en) * 1977-11-23 1979-05-30 Krupp Polysius Ag Apparatus for the heat treatment of pulverulent materials
FR2659134A1 (en) * 1990-03-02 1991-09-06 Francais Ciments Method and apparatus for the heat treatment of powder-form mineral materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0002054A1 (en) * 1977-11-23 1979-05-30 Krupp Polysius Ag Apparatus for the heat treatment of pulverulent materials
FR2659134A1 (en) * 1990-03-02 1991-09-06 Francais Ciments Method and apparatus for the heat treatment of powder-form mineral materials

Also Published As

Publication number Publication date
FR2272359B3 (en) 1977-03-18

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Legal Events

Date Code Title Description
ST Notification of lapse