US20130228102A1 - Process for controlling a crystal form of alite in portland cement clinker - Google Patents
Process for controlling a crystal form of alite in portland cement clinker Download PDFInfo
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- US20130228102A1 US20130228102A1 US13/509,793 US201013509793A US2013228102A1 US 20130228102 A1 US20130228102 A1 US 20130228102A1 US 201013509793 A US201013509793 A US 201013509793A US 2013228102 A1 US2013228102 A1 US 2013228102A1
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- Prior art keywords
- temperature
- clinker
- cement clinker
- portland cement
- alite
- Prior art date
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- 239000011398 Portland cement Substances 0.000 title claims abstract description 51
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000013078 crystal Substances 0.000 title claims abstract description 13
- 239000004568 cement Substances 0.000 claims description 43
- 235000012054 meals Nutrition 0.000 claims description 17
- 239000000843 powder Substances 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 9
- 238000001354 calcination Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims 5
- 239000000203 mixture Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000011505 plaster Substances 0.000 description 9
- 238000001228 spectrum Methods 0.000 description 8
- 238000007669 thermal treatment Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
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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
- C04B7/02—Portland cement
-
- 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
- C04B7/48—Clinker treatment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
Definitions
- the present invention relates to a process for controlling crystal form of Alite in Portland cement clinker, and particularly relates to a method for improving the performance of Portland cement clinker.
- Portland cement mainly consists of Portland cement clinker, plaster and composite material. In order to improve the performance of Portland cement, the performance of Portland cement clinker has to be improved.
- Portland cement clinker mainly consists of Alite, Belite, C 3 A(3CaO ⁇ Al 2 O 3 ) and C 4 AF (4CaO ⁇ 3Al 2 O 3 ⁇ Fe 2 O 3 ).
- Alite is the main supplier to provide gelling property of Portland cement clinker, while it is also the main energy consumer. Therefore, the content of C 3 S in clinker or its activity has to be improved in order to improve gelling property of Portland cement clinker, however, the increase of the content of C 3 S in clinker will lead to increase of energy consumption, therefore, under the national demand of energy saving and emission reduction, one of the effective measures to improve the performance of cement clinker is to improve the activity of Alite in Portland cement clinker. At present, doping is the most commonly used method to improve the activity of Alite, wherein high-activity Alite is obtained via modification of its crystal form.
- the object of present invention is to improve the performance of Portland cement clinker, providing a process for controlling crystal form of Alite in Portland cement clinker, as a result, the crystal form of Alite in Portland cement clinker is changed and therefore the performance of Portland cement clinker is improved.
- the technical scheme of present invention is: a process for controlling crystal form of Alite in Portland cement clinker, wherein it includes the following steps:
- step (2), (3), (2B) and (3B) is preferred to be 5 ⁇ 120 min, respectively.
- the specific surface area of ground powder of step (4) and (4B) is preferred to be 340 ⁇ 360 m 2 /kg.
- step (1) and (1B) the prepared cement raw meal is calcined to form clinker according to regular processing parameters. Besides, calcined clinker could also be directly used in the following thermal treatment.
- the present invention relates to a process for controlling crystal from of Alite in Portland cement clinker, wherein Portland cement clinker is thermally treated so that the crystal form of Alite in Portland cement clinker is changed and the performance of Portland cement clinker is improved.
- the present process is easy and feasible.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The present invention relates to a process of controlling crystal form of Alite in Portland cement clinker, wherein the said Portland cement clinker is thermally treated in order to change the crystal form of Alite in Portland cement clinker, so as to improve performance of resulting Portland cement clinker. The said process of present invention is easy and feasible.
Description
- The present invention relates to a process for controlling crystal form of Alite in Portland cement clinker, and particularly relates to a method for improving the performance of Portland cement clinker.
- Cement industry is growing rapidly in China. The output of cement in China in 2008 was around 1.45 billion tons, which took up around 50% of global cement total output and had been No. 1 cement producing country for 24 consecutive years all over the world. Due to the fact that Chinese economy is in the phase of rapid development, it is predicted that China's cement output will continuously increase at a rate of 10%. Although lots of cement is produced in China, the overall cement quality is relatively low, thus the lifetime of concrete work is influenced, therefore, the performance of cement has to be improved. Portland cement mainly consists of Portland cement clinker, plaster and composite material. In order to improve the performance of Portland cement, the performance of Portland cement clinker has to be improved. Portland cement clinker mainly consists of Alite, Belite, C3A(3CaO·Al2O3) and C4AF (4CaO·3Al2O3·Fe2O3). Alite is the main supplier to provide gelling property of Portland cement clinker, while it is also the main energy consumer. Therefore, the content of C3S in clinker or its activity has to be improved in order to improve gelling property of Portland cement clinker, however, the increase of the content of C3S in clinker will lead to increase of energy consumption, therefore, under the national demand of energy saving and emission reduction, one of the effective measures to improve the performance of cement clinker is to improve the activity of Alite in Portland cement clinker. At present, doping is the most commonly used method to improve the activity of Alite, wherein high-activity Alite is obtained via modification of its crystal form.
- The object of present invention is to improve the performance of Portland cement clinker, providing a process for controlling crystal form of Alite in Portland cement clinker, as a result, the crystal form of Alite in Portland cement clinker is changed and therefore the performance of Portland cement clinker is improved.
- In order to realize said object, the technical scheme of present invention is: a process for controlling crystal form of Alite in Portland cement clinker, wherein it includes the following steps:
- (1) The prepared Portland cement raw meal is calcined;
- (2) Portland cement raw meal is heated to 1400˜1600° C. at a rate of 1˜35° C. per min, and kept at said temperature and then naturally cooled;
- (3) When its temperature is at 600˜800° C., the said cooled clinker is heated at a rate of 1-35° C. per minute until it reaches 700˜1300° C., the said clinker is kept at said temperature, and then it is naturally cooled;
- (4) The said cooled clinker is ground to powder with the aid of ball mill;
- Or it consists of the following steps:
- (1B) The prepared Portland cement raw meal is calcined;
- (2B) Portland cement raw meal is heated to 1400˜1600° C. at a rate of 1˜35° C. per minute, kept at said temperature and then it is transferred to a cooler, being cooled at a rate of 40˜80° C. per minute;
- (3B) When the temperature reaches 700˜1300° C., it is kept at said temperature;
- (4B) The said clinker is naturally cooled; the cooled clinker is ground to powder with the aid of ball mill.
- The holding time of step (2), (3), (2B) and (3B) is preferred to be 5˜120 min, respectively. The specific surface area of ground powder of step (4) and (4B) is preferred to be 340˜360 m2/kg.
- In step (1) and (1B), the prepared cement raw meal is calcined to form clinker according to regular processing parameters. Besides, calcined clinker could also be directly used in the following thermal treatment.
- The present invention relates to a process for controlling crystal from of Alite in Portland cement clinker, wherein Portland cement clinker is thermally treated so that the crystal form of Alite in Portland cement clinker is changed and the performance of Portland cement clinker is improved. The present process is easy and feasible.
-
FIG. 1 is XRD spectrum of Alite in cement clinker at different 2θ (the said clinker is produced by Huaihai Cement Factory), whereinFIG. 1-1 is XRD spectrum (2θ=32˜33°) of Alite in cement clinker without thermal treatment,FIG. 1-2 is XRD spectrum (2θ=51.5˜52.7°) of Alite in cement clinker without thermal treatment; -
FIG. 2 is XRD spectrum of Alite in cement clinker at different 2θ (the said clinker is produced by Huaihai Cement Factory and is thermally treated); whereinFIG. 2-1 is XRD spectrum (2θ=32˜33°) of Alite in cement clinker after thermal treatment,FIG. 2-2 is XRD spectrum (2θ=51.0˜52.5°) of Alite in cement clinker after thermal treatment. - The present invention is further illustrated with reference to the following examples, but the present invention is not limited to the following examples.
-
- (1) The prepared Portland cement raw meal is heated to 1450° C. and calcined for 1 h; and then cooled;
- (2) The temperature of Portland cement raw meal is increased at a rate of 5° C./min until it reaches 1450° C., and kept at said temperature for 30 min, and then naturally cooled;
- (3) The said cooled clinker is heated at a temperature below 800° C., the temperature is increased at a rate of 10° C. per minute until it reaches 1100° C., subsequently, the clinker is kept at said temperature for 60 min and then naturally cooled;
- (4) The said cooled clinker was ground to powder with the aid of ball mill, the specific surface area of said powder is 340 m2/kg; the XRD spectrum of Alite in said clinker and the XRD spectrum of Alite in clinker of Xuchou Huaihai Cement Factory without thermal treatment are shown in
FIG. 1 andFIG. 2 ; it can be seen that after calcination at 1100° C. for 60 min, the crystal form of Alite in Portland cement clinker of Huaihai Cement Factory is changed from M3 to M1. - (5) 4 g plaster was added to 96 g finally obtained cement clinker, the said mixture is stirred uniformly, subsequently, 29 mL water (ratio between water and cement w/c=0.29) was added, the said mixture was stirred and molded to form 20×20×20 mm samples, and the 3d and 28d compressive strength of the samples are determined. Samples are first cured in a curing box for 24 h, wherein the relative humidity is 90% and the temperature is 20±2° C., and then knockout sample is cured in a water curing case at 20±1° C. The comparison of resulting strength is shown in Table 1.
-
TABLE 1 Plaster strength of Portland cement clinker (MPa) Examples 3 d 28 d Xuzhou Huaihai Cement Factory 55.6 88.6 (Portland cement clinker) Example 1 57.3 92.9 -
- (1) The prepared Portland cement raw meal is heated to 1480° C. and calcined for 0.5 h; and then cooled;
- (2) The temperature of said Portland cement raw meal is increased at a rate of 10° C./min until it reaches 1500° C., and kept at said temperature for 60 min, and then it was naturally cooled;
- (3) The said cooled clinker is heated at a temperature below 700° C., the temperature is increased at a rate of 15° C./min until it reaches 1000° C., subsequently, the said clinker and kept at said temperature for 90 min, and then naturally cooled; the said clinker is ground to powder with the aid of ball mill, the resulting specific surface area of said powder is 350 m2/kg;
- (4) 4 g plaster is added to 96 g finally obtained cement clinker, the said mixture is stirred uniformly, subsequently, 29 mL water (ratio between water and cement w/c=0.29) is added, the said mixture was stirred and molded to form 20×20×20 mm samples, and the 3d and 28d compressive strength of the samples are determined. Samples are first cured in a curing box for 24 h, wherein the relative humidity is 90% and the temperature is 20±2° C., and then knockout sample is cured in a water curing box at 20±1° C. The comparison of resulting strength is shown in Table 2.
-
TABLE 2 Plaster strength of Portland cement clinker (MPa) Examples 3 d 28 d Xuzhou Huaihai Cement Factory 55.6 88.6 (Portland cement clinker) Example 2 58.0 95.6 -
- (1) The prepared Portland cement raw meal is heated to 1450° C. and calcined for 1 h; and then cooled;
- (2) The temperature of said Portland cement raw meal is increased at a rate of 5° C./min until it reaches 1450° C., and kept at said temperature for 60 minutes, and then the said mixture enters a cooling machine, and the temperature of said mixture is decreased at a rate of 55° C./minute;
- (3) The temperature is cooled to 1000° C., and the mixture is kept at said temperature for 60 minutes;
- (4) And then it was naturally cooled; the cooled clinker is ground to powder with the aid of ball mill, wherein the specific surface area of said powder was 360 m2/kg;
- (5) 4 g plaster was added to 96 g finally obtained cement clinker, the said mixture was stirred uniformly, subsequently, 29 mL water (ratio between water and cement w/c=0.29) is added, the said mixture is stirred and molded to form 20×20×20 mm samples, and the 3d and 28d compressive strength of samples are determined. Samples are first cured in a curing box for 24 h, wherein the relative humidity is 90% and the temperature is 20±2° C., and then knockout sample is cured in a water curing box at 20±1° C. The comparison of resulting strength is shown in Table 3.
-
TABLE 3 Plaster strength of Portland cement clinker (MPa) Examples 3 d 28 d Xuzhou Huaihai Cement Factory 55.6 88.6 (Portland cement clinker) Example 3 58.5 105.0 -
- (1) The prepared Portland cement raw meal is heated to 1450° C. and calcined for 1 h; and then cooled;
- (2) The temperature of said Portland cement raw meal is increased at a rate of 15° C./min until it reaches 1500° C., and kept at said temperature for 30 minutes, and then the said mixture enters a cooling machine, and the temperature of said mixture was decreased at a rate of 50° C. per minute;
- (3) The temperature is cooled to 1100° C., and then the mixture is kept at said temperature for 30 minutes;
- (4) And then it was naturally cooled; the cooled clinker was ground to powder with the aid of ball mill, wherein the specific surface area of said powder was 350 m2/kg;
- (5) 4 g plaster is added to 96 g finally obtained cement clinker, the said mixture was stirred, subsequently, 29 mL water (ratio between water and cement w/c=0.29) is added, the said mixture is stirred and molded to form 20×20×20 mm samples, and the 3d and 28d compressive strength of samples are determined. Samples are first cured in a curing box for 24 h, wherein the relative humidity is 90% and the temperature is 20±2° C., and then knockout sample is cured in a water curing case at 20±1° C. The comparison of resulting strength is shown in Table 4.
-
TABLE 4 Plaster strength of Portland cement clinker (MPa) Examples 3 d 28 d Xuzhou Huaihai Cement Factory 55.6 88.6 (Portland cement clinker) Example 4 56.8 91.5
Claims (9)
1. A process for controlling a crystal form of Alite in Portland cement clinker, wherein the method comprises:
(1) the calcining prepared Portland cement raw meal to form a cement clinker, the calcining comprising;
(2) increasing the temperature of the Portland cement raw meal at a rate of 1-35° C. per min to a first temperature of 1400-1600° C.;
holding the temperature at the first temperature; and
naturally cooling the formed cement clinker;
heat treating cement clinker after the temperature of the cement clinker is reduced from the first temperature to 600-800° C., the heat treatment comprising:
heating the cement clinker at a rate of 1-35° C. per minute until the cement clinker reaches a second temperature of 700-1300° C.;
holding the temperature of the cement clinker at the second temperature; and
naturally cooling the cement clinker; and
grinding the cement clinker after cooling from the second temperature.
2. The process according to claim 1 , wherein the holding times of the calcining and heat treatment operations are each 5-120 minutes, respectively.
3. The process according to claim 1 , wherein the specific surface area of the grounded clinker powder is 340-360 m2/kg.
4. The process according to claim 1 , wherein the cooled clinker is grounded to a powder using a ball mill.
5. A process for controlling crystal form of Alite in Portland cement clinker, wherein the method comprises:
calcining a Portland cement raw meal to form a cement clinker, the calcining comprising:
heating the Portland cement raw meal to a first temperature between 1400-1600° C. at a rate of 1-35° C. per min;
holding the temperature at the first temperature;
cooling at a rate of 40-80° C. per min to a temperature of 700-1300° C.;
holding the temperature at 700˜1300° C.; and
naturally cooling the formed cement clinker; and
grinding the cooled clinker to a powder.
6. The process according to claim 5 , wherein the holding times of the calcining and heat treatment operations are each 5-120 minutes, respectively.
7. The process according to claim 5 , wherein the specific surface area of powder of the grounded clinker is 340-360 m2/kg.
8. The process according to claim 5 , wherein the cooled clinker is grounded to a powder using a ball mill.
9. The process according to claim 5 , wherein cooling at a rate of 40-80° C. is performed using a cooling device.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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CN200910212646.5 | 2009-11-13 | ||
CN200910212646 | 2009-11-13 | ||
CN2009102126465A CN101717210B (en) | 2009-11-13 | 2009-11-13 | Process for regulating and controlling alite crystal form in portland cement clinker |
PCT/CN2010/075183 WO2011057505A1 (en) | 2009-11-13 | 2010-07-15 | Process of regulating and controlling alite crystal in portland cement clinker |
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US20130228102A1 true US20130228102A1 (en) | 2013-09-05 |
US8529690B1 US8529690B1 (en) | 2013-09-10 |
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US13/509,793 Active US8529690B1 (en) | 2009-11-13 | 2010-07-15 | Process for controlling a crystal form of alite in portland cement clinker |
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US (1) | US8529690B1 (en) |
EP (1) | EP2351719B1 (en) |
JP (1) | JP5551787B2 (en) |
CN (1) | CN101717210B (en) |
WO (1) | WO2011057505A1 (en) |
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CN101717210B (en) * | 2009-11-13 | 2012-02-15 | 南京工业大学 | Process for regulating and controlling alite crystal form in portland cement clinker |
JP5880069B2 (en) * | 2012-01-20 | 2016-03-08 | 住友大阪セメント株式会社 | High belite clinker composition excellent in initial strength development, its production method and high belite cement composition |
JP6702238B2 (en) * | 2017-03-14 | 2020-05-27 | 住友大阪セメント株式会社 | Hydraulic composition |
CN111302681B (en) * | 2020-03-19 | 2021-02-26 | 南京工业大学 | Method for regulating and controlling alite crystal form in portland cement clinker through gas-solid reaction |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2365152B2 (en) * | 1973-12-29 | 1977-02-17 | Ludwig, Udo, Prof. Dr.-Ing., 5100 Aachen | METHOD AND DEVICE FOR BURNING CEMENT GROUND TO BURN CEMENT CLINKERS |
DE3236652A1 (en) * | 1982-10-04 | 1984-04-05 | Klöckner-Humboldt-Deutz AG, 5000 Köln | METHOD AND SYSTEM FOR BURNING FINE-GRAINED GOODS, PARTICULARLY CEMENT FLOUR |
DE19540996A1 (en) * | 1995-11-03 | 1997-05-15 | Paul Loerke | Process for the thermal treatment of fine-grained material, in particular for the production of cement clinker |
MX9602271A (en) | 1996-06-10 | 1998-04-30 | Cemex S A De C V | High resistance hydraulic cement with accelerated development. |
DE19844038C2 (en) * | 1998-09-25 | 2002-08-08 | Paul Loerke | Process for producing white cement and device for carrying it out |
FR2807424B1 (en) * | 2000-04-05 | 2002-12-13 | Energetic Ind Internat | HYDRAULIC BINDER RESULTING FROM THE MIXTURE OF A SULFATIC BINDER AND A BINDER CONTAINING THE MINERALOGIC COMPOUND C4A3S |
MXPA01007229A (en) * | 2001-07-13 | 2003-08-19 | Cemex Trademarks Worldwide Ltd | Method for producing cement clinker using petroleum coke with sulphur content. |
FR2831161B1 (en) * | 2001-10-24 | 2004-09-10 | Francais Ciments | IRONLESS AND FREE LIMELESS SULFOALUMINOUS CLINKER, PREPARATION METHOD THEREOF AND USE IN WHITE BINDERS |
MXPA02012235A (en) * | 2002-12-10 | 2004-07-16 | Cemex Trademarks Worldwide Ltd | White cement and white clinker with high-sulfur content coming from oil coke with high-sulfur content used as fuel. |
FR2873366B1 (en) * | 2004-07-20 | 2006-11-24 | Lafarge Sa | SULFOALUMINOUS CLINKER HAVING A HIGH BELITE CONTENT, PROCESS FOR PRODUCING SUCH A CLINKER AND USE THEREOF FOR PREPARING HYDRAULIC BINDERS. |
MXPA04007614A (en) * | 2004-08-05 | 2006-02-09 | Cemex Trademarks Worldwide Ltd | Process to produce portland cement clinker and obtained clinker. |
CN1315749C (en) * | 2004-09-14 | 2007-05-16 | 中国建筑材料科学研究院 | High strength silicate clinker and its preparing method |
RU2304562C2 (en) * | 2005-04-12 | 2007-08-20 | Сергей Алексеевич Зубехин | Method of production of high-early-strength portland cement and method of production of concrete on base of this cement |
US20080041277A1 (en) * | 2006-08-10 | 2008-02-21 | Alcoa Inc. | Fluoride-containing hydraulic cements and methods of making the same |
CN101134647B (en) | 2007-06-14 | 2010-08-25 | 中国建筑材料科学研究总院 | Process for firing high-performance alite-sulphoaluminate cement clinker |
JP2009084105A (en) * | 2007-09-28 | 2009-04-23 | Sumitomo Osaka Cement Co Ltd | Cement clinker and method of producing the same |
ES2732127T3 (en) * | 2008-12-19 | 2019-11-20 | Holcim Technology Ltd | Hydraulic binder based on Clinker sulfoaluminoso and Clinker Portland |
ES2469940T3 (en) * | 2009-01-28 | 2014-06-20 | Vicat | Sulfoaluminum clinker and procedure for its preparation |
CN101717209B (en) * | 2009-11-13 | 2012-09-19 | 南京工业大学 | Secondary synthesis method of calcium sulfoaluminate mineral in silicate cement clinker |
CN101717210B (en) * | 2009-11-13 | 2012-02-15 | 南京工业大学 | Process for regulating and controlling alite crystal form in portland cement clinker |
-
2009
- 2009-11-13 CN CN2009102126465A patent/CN101717210B/en active Active
-
2010
- 2010-07-15 EP EP10829469.5A patent/EP2351719B1/en not_active Not-in-force
- 2010-07-15 JP JP2012538173A patent/JP5551787B2/en not_active Expired - Fee Related
- 2010-07-15 US US13/509,793 patent/US8529690B1/en active Active
- 2010-07-15 WO PCT/CN2010/075183 patent/WO2011057505A1/en active Application Filing
Also Published As
Publication number | Publication date |
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JP5551787B2 (en) | 2014-07-16 |
US8529690B1 (en) | 2013-09-10 |
EP2351719B1 (en) | 2015-02-11 |
CN101717210B (en) | 2012-02-15 |
EP2351719A4 (en) | 2012-07-04 |
WO2011057505A1 (en) | 2011-05-19 |
EP2351719A1 (en) | 2011-08-03 |
JP2013510784A (en) | 2013-03-28 |
CN101717210A (en) | 2010-06-02 |
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