GB1523621A - Method of and apparatus for calcinin cement material - Google Patents

Method of and apparatus for calcinin cement material

Info

Publication number
GB1523621A
GB1523621A GB3211375A GB3211375A GB1523621A GB 1523621 A GB1523621 A GB 1523621A GB 3211375 A GB3211375 A GB 3211375A GB 3211375 A GB3211375 A GB 3211375A GB 1523621 A GB1523621 A GB 1523621A
Authority
GB
United Kingdom
Prior art keywords
gases
kiln
cyclone
raw material
cement raw
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
Application number
GB3211375A
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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
Priority claimed from JP8769774A external-priority patent/JPS5413255B2/ja
Priority claimed from JP10837874A external-priority patent/JPS5134924A/en
Priority claimed from JP11255074A external-priority patent/JPS532646B2/ja
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of GB1523621A publication Critical patent/GB1523621A/en
Expired 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
    • F27B7/2033—Arrangements of preheating devices for the charge consisting of a single string of cyclones with means for precalcining the raw material

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

1523621 Producing cement clinker MITSUBISHI JUKOGYO KK 31 July 1975 [31 July 1974 20 Sept 1974 30 Sept 1974] 32113/75 Heading C1H [Also in Division F4] Cement clinker is produced by suspending powdered cement raw material in primary oxygencontaining gases, mixing with the suspension an amount of fuel greater than that required for complete combustion with the oxygen in the primary gases, burning to cause incomplete combustion of the fuel and partial calcination of the cement raw material and to produce reducing exhaust gases including combustible gases from the fuel and, suspended therein, the partially calcined cement raw material, mixing the reducing exhaust gases with kiln exhaust gases from the burning of the calcined material, the kiln exhaust gases containing nitrogen oxides, introducing secondary oxygen-containing gases into the mixture of exhaust gases, completely burning the combustible gases in the mixture and calcining the partially calcined cement raw material, separating the calcined cement raw material from the gases and then burning the material in the kiln. An apparatus for carrying out the process comprises a kiln (1), a gas duct (4a) connected at its lower end to the entrance to the kiln (1), a first cyclone (2a) whose upper end is connected to the upper end of the gas duct (4a) and the lower end of which cyclone (2a) is connected to the entrance to the kiln to permit the passage of powdered cement material from the cyclone to the kiln (1), a second cyclone (2b), means (3c) for supplying powdered cement raw material into the second cyclone, a gas producer (5), whose bottom opens into the lower end of the gas duct (4a), means (3b) for supplying the cement material from the second cyclone to the gas producer, means (6) for supplying fuel and primary oxygen-containing gases to the gas producer (5) and means (9) for supplying secondary oxygen-containing gases to a point above where the bottom of the gas producer (5) opens into the lower end of the gas duct (4a).
GB3211375A 1974-07-31 1975-07-31 Method of and apparatus for calcinin cement material Expired GB1523621A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP8769774A JPS5413255B2 (en) 1974-07-31 1974-07-31
JP10837874A JPS5134924A (en) 1974-09-20 1974-09-20 FUNMATSUGENRYOKANETSUSOCHI
JP11255074A JPS532646B2 (en) 1974-09-30 1974-09-30

Publications (1)

Publication Number Publication Date
GB1523621A true GB1523621A (en) 1978-09-06

Family

ID=27305577

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3211375A Expired GB1523621A (en) 1974-07-31 1975-07-31 Method of and apparatus for calcinin cement material

Country Status (5)

Country Link
BR (1) BR7504831A (en)
DE (1) DE2534438B2 (en)
DK (1) DK333075A (en)
FR (1) FR2280601A1 (en)
GB (1) GB1523621A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6688883B2 (en) 1997-07-30 2004-02-10 Cemex, Inc. Apparatus for oxygen enrichment of cement kiln system
CN112601725A (en) * 2019-08-01 2021-04-02 太平洋工程株式会社 Cement burning device and denitration method for cement kiln exhaust gas
FR3120074A1 (en) * 2021-02-23 2022-08-26 Fives Fcb Calcining unit for the decarbonation of raw materials

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2520102C2 (en) * 1975-05-06 1984-06-20 Krupp Polysius Ag, 4720 Beckum Device for the heat treatment of fine-grained goods
DE2708486C2 (en) * 1977-02-26 1984-05-10 Klöckner-Humboldt-Deutz AG, 5000 Köln Method and device for the production of low-alkali cement clinker from alkali-containing raw material
DE3146891C2 (en) * 1981-11-26 1985-03-14 BKMI Industrieanlagen GmbH, 8000 München Process for calcining minerals containing calorific value
DE3212009A1 (en) * 1982-03-31 1983-10-06 Krupp Polysius Ag METHOD AND DEVICE FOR THE HEAT TREATMENT OF FINE GRAIN GOODS
FR2588853B2 (en) * 1985-10-18 1988-01-15 Cle Groupe Technip METHOD AND INSTALLATION FOR HEAT TREATMENT, WHICH CAN BE APPLIED TO THE MANUFACTURE OF A HYDRAULIC BINDER, INCLUDING AN POST-COMBUSTION STAGE
DE3582564D1 (en) * 1984-11-12 1991-05-23 Cle METHOD AND DEVICE FOR THERMAL TREATMENT, USED IN THE PRODUCTION OF A HYDRAULIC BINDING AGENT, CONTAINING A POST-COMBUSTION STAGE.
FR2573063B1 (en) * 1984-11-12 1987-02-20 Technip Cie METHOD AND INSTALLATION FOR HEAT TREATMENT, WHICH CAN BE APPLIED TO THE MANUFACTURE OF A HYDRAULIC BINDER, INCLUDING AN POST-COMBUSTION STAGE
DE3925475A1 (en) * 1989-08-01 1991-02-07 Krupp Polysius Ag METHOD FOR THE HEAT TREATMENT OF FINE GRAIN GOODS
DE4123306C2 (en) * 1991-07-13 2000-05-25 Deutz Ag Plant for the thermal treatment of flour-like raw materials
WO1999006778A1 (en) * 1997-07-30 1999-02-11 Southdown, Inc. Oxygen enrichment of cement kiln system combustion

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6688883B2 (en) 1997-07-30 2004-02-10 Cemex, Inc. Apparatus for oxygen enrichment of cement kiln system
CN112601725A (en) * 2019-08-01 2021-04-02 太平洋工程株式会社 Cement burning device and denitration method for cement kiln exhaust gas
FR3120074A1 (en) * 2021-02-23 2022-08-26 Fives Fcb Calcining unit for the decarbonation of raw materials
WO2022180326A1 (en) * 2021-02-23 2022-09-01 Fives Fcb Calcination unit for decarbonating raw materials, and clinker production process

Also Published As

Publication number Publication date
FR2280601B1 (en) 1977-12-16
DE2534438A1 (en) 1976-03-04
FR2280601A1 (en) 1976-02-27
BR7504831A (en) 1976-07-13
DK333075A (en) 1976-02-01
DE2534438B2 (en) 1979-05-10

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee