FR2265700A1 - Cement calcining process and plant - fuel inlets in preheater permit use of fuel oil with high sulphur content - Google Patents

Cement calcining process and plant - fuel inlets in preheater permit use of fuel oil with high sulphur content

Info

Publication number
FR2265700A1
FR2265700A1 FR7411196A FR7411196A FR2265700A1 FR 2265700 A1 FR2265700 A1 FR 2265700A1 FR 7411196 A FR7411196 A FR 7411196A FR 7411196 A FR7411196 A FR 7411196A FR 2265700 A1 FR2265700 A1 FR 2265700A1
Authority
FR
France
Prior art keywords
fuel
fuel oil
furnace
solids
cement
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
FR7411196A
Other languages
French (fr)
Other versions
FR2265700B1 (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.)
Lafarge SA
Original Assignee
Lafarge 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 Lafarge SA filed Critical Lafarge SA
Priority to FR7411196A priority Critical patent/FR2265700A1/en
Priority to GB10758/75A priority patent/GB1506733A/en
Priority to CA75222347A priority patent/CA1048267A/en
Priority to US05/561,856 priority patent/US4028049A/en
Priority to DE2513304A priority patent/DE2513304B2/en
Publication of FR2265700A1 publication Critical patent/FR2265700A1/en
Application granted granted Critical
Publication of FR2265700B1 publication Critical patent/FR2265700B1/fr
Granted legal-status Critical Current

Links

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
    • F27B7/2016—Arrangements of preheating devices for the charge
    • F27B7/2025—Arrangements of preheating devices for the charge consisting of a single string of cyclones
    • F27B7/2033—Arrangements of preheating devices for the charge consisting of a single string of cyclones with means for precalcining the raw material
    • 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
    • C04B7/432—Preheating without addition of fuel

Landscapes

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

Abstract

Process for converting raw materials in cement prodn. in which the solids forming the raw materials are heated to remove hydroxides and carbon in a vertical multi-stage heat exchanger consisting of several cyclones, and then passed to a calcining furnace in counter current to a stream of hot gas from the furnace. The flow of solids from the penultimate cyclone into the final cyclone depends on the degree of decarbonisation of the solids leaving the penultimate cyclone. A fuel and a hot combustion mixt. is pref. fed into the stream of gas leaving the furnace. The pref. device consists of a rotary drum calcining furnace and a battery of preheating cyclones. A fuel oil with a high sulphur content can be used to calcine and preheat the cement without forming deposits on the walls of the final preheating stage which normally occurs when the fuel oil contains more than 1% sulphur.
FR7411196A 1974-03-29 1974-03-29 Cement calcining process and plant - fuel inlets in preheater permit use of fuel oil with high sulphur content Granted FR2265700A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7411196A FR2265700A1 (en) 1974-03-29 1974-03-29 Cement calcining process and plant - fuel inlets in preheater permit use of fuel oil with high sulphur content
GB10758/75A GB1506733A (en) 1974-03-29 1975-03-14 Method of treating raw material for producing cement
CA75222347A CA1048267A (en) 1974-03-29 1975-03-18 Method and installation of treating raw material for producing cement
US05/561,856 US4028049A (en) 1974-03-29 1975-03-25 Method and installation of treating raw material for producing cement
DE2513304A DE2513304B2 (en) 1974-03-29 1975-03-26 Method and device for the treatment of raw materials for cement production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7411196A FR2265700A1 (en) 1974-03-29 1974-03-29 Cement calcining process and plant - fuel inlets in preheater permit use of fuel oil with high sulphur content

Publications (2)

Publication Number Publication Date
FR2265700A1 true FR2265700A1 (en) 1975-10-24
FR2265700B1 FR2265700B1 (en) 1978-02-17

Family

ID=9137070

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7411196A Granted FR2265700A1 (en) 1974-03-29 1974-03-29 Cement calcining process and plant - fuel inlets in preheater permit use of fuel oil with high sulphur content

Country Status (1)

Country Link
FR (1) FR2265700A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534245A1 (en) * 1982-10-08 1984-04-13 Kloeckner Humboldt Deutz Ag PROCESS AND INSTALLATION FOR THE HEAT TREATMENT OF A PRECAUTED, HIGHLY CALCINATED, FINISHED GRAIN PRODUCT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534245A1 (en) * 1982-10-08 1984-04-13 Kloeckner Humboldt Deutz Ag PROCESS AND INSTALLATION FOR THE HEAT TREATMENT OF A PRECAUTED, HIGHLY CALCINATED, FINISHED GRAIN PRODUCT

Also Published As

Publication number Publication date
FR2265700B1 (en) 1978-02-17

Similar Documents

Publication Publication Date Title
EP0176695A3 (en) Device for the treatment of fines
GB1463124A (en) Calcination of pulverous material
GB1434091A (en) Plant for burning or heat treatment of granular or pulverous material
EA018769B1 (en) Process for operating a plant for producing calcined clay
GB1437704A (en) Device for the thermal treatment of fine-grained material with a associated with a heat exchanber system
GB1491293A (en) Heat treatment of pulverous raw materials
ES437083A1 (en) Method of burning calcined and uncalcined pulverous raw material and rotary kiln plant therefor
GB1483166A (en) Installations for use in manufacturing cement by the dry method
GB1506863A (en) Installations for the manufacture of cement by the dry process
ES479297A1 (en) Apparatus for the thermal treatment of fine-grained material with hot gases
ES475352A1 (en) Apparatus for the heat treatment of pulverulent materials.
GB1506733A (en) Method of treating raw material for producing cement
JO1282B1 (en) Method and apparatus for calcining raw phosphate material
GB1479220A (en) Kiln plant
FR2265700A1 (en) Cement calcining process and plant - fuel inlets in preheater permit use of fuel oil with high sulphur content
ES8500198A1 (en) Method and apparatus for heat treating pulverulent raw material.
FR2284576A1 (en) Cement calcining process and plant - fuel inlets in preheater permit use of fuel oil with high sulphur content
ES485388A1 (en) Heat-treatment method for fine-grained material.
ES472350A1 (en) Method and apparatus for the thermal treatment of fine-grained material with hot gases
GB1420704A (en) Heat treatment of a powdery material
FR2250423A5 (en) Cement powder preheating - in several stages by kiln waste gases and in parallel stages by combustion gases
EP0158387B1 (en) A process for calcining green coke
FR2359800A1 (en) Calcining powdered material, esp. cement - using heat exchanger in preheater stages to produce hot air used in precalcining chamber
ES8703820A1 (en) Process and apparatus for thermal treatment of fine grained material, particularly for burning raw cement powder.
SU680638A3 (en) Apparatus and method for obtaining aluminium-containing loose material