FR2366231A2 - Cement calcining plant contg. suction fans - which provide large vol. of hot gas for drying raw material - Google Patents

Cement calcining plant contg. suction fans - which provide large vol. of hot gas for drying raw material

Info

Publication number
FR2366231A2
FR2366231A2 FR7629337A FR7629337A FR2366231A2 FR 2366231 A2 FR2366231 A2 FR 2366231A2 FR 7629337 A FR7629337 A FR 7629337A FR 7629337 A FR7629337 A FR 7629337A FR 2366231 A2 FR2366231 A2 FR 2366231A2
Authority
FR
France
Prior art keywords
preheater
raw material
contg
chamber
hot gas
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
FR7629337A
Other languages
French (fr)
Other versions
FR2366231B2 (en
Inventor
Pierre Herriquet
Gerard 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
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 FR7629337A priority Critical patent/FR2366231A2/en
Publication of FR2366231A2 publication Critical patent/FR2366231A2/en
Application granted granted Critical
Publication of FR2366231B2 publication Critical patent/FR2366231B2/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
    • F27B7/2041—Arrangements of preheating devices for the charge consisting of at least two strings of cyclones with two different admissions of raw material
    • F27B7/205—Arrangements of preheating devices for the charge consisting of at least two strings of cyclones with two different admissions of raw material with precalcining means on the string supplied with exhaust gases from the cooler

Abstract

In parent patent a plant for mfg. cement by the dry method used two preheaters (a,b) heated by the fumes leaving a combustion chamber (c) or a rotary drum furnace (d) located downstream of chamber (c). All the raw material is fed into one preheater (a) but is divided into two fractions (1,2) after one preheating stage. Fractions (1) travels through the remaining stages of preheater (a) to chamber (c); but fraction (2) travels through preheater (b) to chamber (c). In this addn., the fume outlet duct of preheater (a) is connected to a suction fan leading to the fume outlet duct of preheater (b); and a second suction fan is located on the outlet side of the joint between the two ducts. A large vol. of gas at a lower temp. can be obtd. for drying the raw material.
FR7629337A 1976-09-30 1976-09-30 Cement calcining plant contg. suction fans - which provide large vol. of hot gas for drying raw material Granted FR2366231A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7629337A FR2366231A2 (en) 1976-09-30 1976-09-30 Cement calcining plant contg. suction fans - which provide large vol. of hot gas for drying raw material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7629337A FR2366231A2 (en) 1976-09-30 1976-09-30 Cement calcining plant contg. suction fans - which provide large vol. of hot gas for drying raw material

Publications (2)

Publication Number Publication Date
FR2366231A2 true FR2366231A2 (en) 1978-04-28
FR2366231B2 FR2366231B2 (en) 1983-05-13

Family

ID=9178222

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7629337A Granted FR2366231A2 (en) 1976-09-30 1976-09-30 Cement calcining plant contg. suction fans - which provide large vol. of hot gas for drying raw material

Country Status (1)

Country Link
FR (1) FR2366231A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619806A1 (en) * 1987-08-25 1989-03-03 Cle Process and system for producing clinker and product thus obtained

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619806A1 (en) * 1987-08-25 1989-03-03 Cle Process and system for producing clinker and product thus obtained

Also Published As

Publication number Publication date
FR2366231B2 (en) 1983-05-13

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