GB1523621A - Method of and apparatus for calcinin cement material - Google Patents
Method of and apparatus for calcinin cement materialInfo
- 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
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).
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)
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)
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 |
-
1975
- 1975-07-22 DK DK333075A patent/DK333075A/en not_active Application Discontinuation
- 1975-07-24 FR FR7523176A patent/FR2280601A1/en active Granted
- 1975-07-29 BR BR7504831A patent/BR7504831A/en unknown
- 1975-07-30 DE DE19752534438 patent/DE2534438B2/en not_active Withdrawn
- 1975-07-31 GB GB3211375A patent/GB1523621A/en not_active Expired
Cited By (4)
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 |