GB1517819A - Process for the production of clinkers for white or grey cements - Google Patents

Process for the production of clinkers for white or grey cements

Info

Publication number
GB1517819A
GB1517819A GB4786976A GB4786976A GB1517819A GB 1517819 A GB1517819 A GB 1517819A GB 4786976 A GB4786976 A GB 4786976A GB 4786976 A GB4786976 A GB 4786976A GB 1517819 A GB1517819 A GB 1517819A
Authority
GB
United Kingdom
Prior art keywords
cooler
air
cooled
white
roasting kiln
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
GB4786976A
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.)
Ciments Francais SAS
Original Assignee
Ciments Francais SAS
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 Ciments Francais SAS filed Critical Ciments Francais SAS
Publication of GB1517819A publication Critical patent/GB1517819A/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
    • 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
    • C04B7/47—Cooling ; Waste heat management

Landscapes

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

Abstract

1517819 Producing white or grey cements SOC DES CIMENTS FRANCAIS 17 Nov 1976 [17 Nov 1975] 47869/76 Addition to 1,090,539 Heading C1H [Also in Division F4] Clinkers of white or grey cements are produced by preheating unfired clays so as to decarbonate them at approximately 850‹C, introducing the decarbonated clays into a roasting kiln at 1450‹C and then cooling in two distinct phases, namely a first phase in which the roasted material is cooled to approximately 700‹C by means of a flow of air to act as combustion-supporting air for the roasting kiln burner and a second phase in which the roasted material is cooled from 700‹C to ambient temperature during which the clinker coloured during the first phase is either cooled in order to produce grey cement clinker, or reheated to 800‹ to 1200‹C and then cooled in the absence of air, i.e. either in water or water vapour or in a neutral or reducing atmosphere in order to produce white cement clinker. An installation for carrying out the above process comprises a preheating and decarbonation unit 1 connected to a roasting kiln 3 which is in turn, connected to a first cooler 4, a second cooler 7, a heating kiln 8 connected to a cooling device 12 adapted to cool clinker in the absence of air i.e. either in water or water vapour or in a neutral or reducing atmosphere and a guiding device 5 situated at the outlet of the first cooler 4 and adapted to direct clinkers either towards the second cooler 7 or towards the heater 8, means being provided for supplying cooling air from the first cooler 4 as combustion-supporting air to the roasting kiln 3.
GB4786976A 1975-11-17 1976-11-17 Process for the production of clinkers for white or grey cements Expired GB1517819A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7534967A FR2331529A2 (en) 1975-11-17 1975-11-17 PERFECTED PROCESS FOR THE MANUFACTURING OF WHITE CEMENT

Publications (1)

Publication Number Publication Date
GB1517819A true GB1517819A (en) 1978-07-12

Family

ID=9162474

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4786976A Expired GB1517819A (en) 1975-11-17 1976-11-17 Process for the production of clinkers for white or grey cements

Country Status (5)

Country Link
BE (1) BE848128R (en)
DE (1) DE2651752A1 (en)
ES (1) ES453397A2 (en)
FR (1) FR2331529A2 (en)
GB (1) GB1517819A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128180A (en) * 1982-10-06 1984-04-26 Thaelmann Schwermaschbau Veb Method and apparatus for manufacturing cement of the Belite type
CN104108891A (en) * 2014-07-14 2014-10-22 中国中材国际工程股份有限公司 White cement clinker bleaching device and process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3210136A1 (en) * 1982-03-19 1983-09-22 Taškentskij naučno-issledovatel'skij i proektnyj institut stroitel'nych materialov NIISTROMPROEKT, Taškent Process for the manufacture of cement clinker
DE3310129A1 (en) * 1983-03-21 1984-09-27 Klöckner-Humboldt-Deutz AG, 5000 Köln METHOD AND DEVICE FOR PRODUCING HYDRAULIC BINDING AGENTS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128180A (en) * 1982-10-06 1984-04-26 Thaelmann Schwermaschbau Veb Method and apparatus for manufacturing cement of the Belite type
CN104108891A (en) * 2014-07-14 2014-10-22 中国中材国际工程股份有限公司 White cement clinker bleaching device and process
CN104108891B (en) * 2014-07-14 2015-11-18 中国中材国际工程股份有限公司 A kind of white cement clinker bleaching process device and processing method

Also Published As

Publication number Publication date
FR2331529A2 (en) 1977-06-10
DE2651752A1 (en) 1977-05-26
ES453397A2 (en) 1978-03-16
BE848128R (en) 1977-03-01

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee