CN101870576A - Cement composition and preparation method thereof - Google Patents
Cement composition and preparation method thereof Download PDFInfo
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- CN101870576A CN101870576A CN201010215079A CN201010215079A CN101870576A CN 101870576 A CN101870576 A CN 101870576A CN 201010215079 A CN201010215079 A CN 201010215079A CN 201010215079 A CN201010215079 A CN 201010215079A CN 101870576 A CN101870576 A CN 101870576A
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- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention relates to a cement composition and a preparation method thereof. The various raw materials for producing cement and semi-finished products have different grindability, the raw materials are introduced into the cement composition according to different dispersions, and the physical and chemical functions of the raw materials vary greatly. The cement composition and the preparation method of the invention can use limestone, slag and separated crude coal ash to the largest extent, so the production cost of the cement composition can be reduced and the comprehensive property of the cement composition can be improved. The cement composition comprises portland cement clinker, gypsum, desulfurized gypsum from power plants, the limestone, the slag, the separated crude coal ash, the bottom slag of boilers, the slag of fluidized bed furnaces and the like.
Description
Technical field
The present invention relates to a kind of cement composition and preparation method thereof.
Background technology
Traditionally, in order to simplify production technique, the cement mill after measuring fixed amount mixes, does not enter the dispersity that is milled down to regulation in the same milling equipment to the various starting material of producing cement, work in-process with making any distinction between.The quality control of this process, some enterprise sieves with water sieve or negative pressure to control screen over-size, and some enterprise comes the control ratio surface-area with the specific surface area instrument, and minority enterprise analyzes the granule-morphology of cement products with the laser particle size distribution instrument.
In recent years, some enterprise has adopted will dry the independent grinding of slag, but will grog, gypsum, flyash and other blended material concentrate the technology of grinding, had realized that scoriaceous grindability difference and when it is milled down to higher dispersity, can use slag to substitute grog more and do not influence and physical and chemical index such as the cement intensity that makes moderate progress.
Gypsum is Nonrenewable resources, and the power plant desulfurization gypsum is a kind of industry byproduct, is to absorb sulfur in smoke with limestone powder under the effect of high-temperature steam, and displaces the secondary industrial residue that forms behind the carbonic acid gas.
Be called as the former ash of flyash (combination ash of being called as, system ash, flying dust [fly ash] are also arranged) from the collected powder mix coal ash of power plant's dust-removal system, sub-elect the sorting ash that a part has superior physics and a chemical property with aerodynamic principle and be called as sorting I level ash.Account for the 25-30% of former grey total amount, the national standard of sorting I level flyash is: [GB1596-91] 0.045 square hole tails over less than 12%, and loss on ignition is less than 5%, is called as meal coal ash after the sorting through remaining part after the sorting, belongs to industrial residue.
Existing cement grinding process exists the component that will need not high degree of dispersion to carry out grinding and the technical problem that will need the component of high degree of dispersion more to disengage in advance and its effect can not be utilized effectively.
Summary of the invention
The object of the present invention is to provide a kind of cement composition and preparation method thereof.The chemically reactive that has solved active mixed material (as slag), potential volcanic ash blended material (as meal coal ash, boiling furnace slag etc. after the sorting) discharges in advance, and reduces the Portland clinker consumption to reach the hydration heat that reduces cement composition, the effect of strength of stability growth curve.
A kind of cement composition comprises meal coal ash after Portland clinker, gypsum, power plant desulfurization gypsum, Wingdale, slag, the sorting, furnace bottom slag and boiling furnace slag.
Wherein, the meal coal ash obtains as follows after the sorting: the former ash of flyash (as collecting from power plant's dust-removal system) is carried out sorting, obtain meal coal ash after sorting I level ash and the sorting.
The weight proportion of each component is as follows:
Portland clinker 30-50 weight part
Gypsum 1-5 weight part
Power plant desulfurization gypsum 1-5 weight part
Wingdale 2-10 weight part
Slag 10-30 weight part
Meal coal ash 10-30 weight part after the sorting
Furnace bottom slag 2-10 weight part
Boiling furnace slag 2-10 weight part.
The specific surface area of Portland clinker is 300-400m
2/ kg, the specific surface area of gypsum is 700-800m
2/ kg, the specific surface area of power plant desulfurization gypsum is 700-800m
2/ kg, the specific surface area of Wingdale is 800-1000m
2/ kg, scoriaceous specific surface area is 450-500m
2/ kg, the specific surface area of meal coal ash is 600-700m after the sorting
2/ kg, the specific surface area of furnace bottom slag is 600-700m
2/ kg, the specific surface area of boiling furnace slag is 600-700m
2/ kg.
A further object of the present invention is to provide the preparation method of above-mentioned cement composition.
A kind of method for preparing above-mentioned cement composition comprises the steps:
1) meal coal ash, furnace bottom slag and boiling furnace slag after Portland clinker, gypsum, power plant desulfurization gypsum, Wingdale, slag, the sorting are carried out grinding respectively, make that the specific surface area of above-mentioned each component is as follows: the specific surface area of Portland clinker is 300-400m
2/ kg, the specific surface area of gypsum is 300-400m
2/ kg, the specific surface area of power plant desulfurization gypsum is 300-400m
2/ kg, the specific surface area of Wingdale is 300-400m
2/ kg, scoriaceous specific surface area is 300-400m
2/ kg, the specific surface area of meal coal ash is 300-400m after the sorting
2/ kg, the specific surface area of furnace bottom slag is 300-400m
2/ kg, the specific surface area of boiling furnace slag is 300-400m
2/ kg;
2) add the A type admixture of 0.01-0.05wt% respectively in the Portland clinker behind the grinding, the gypsum, power plant desulfurization gypsum behind the grinding, Wingdale add the Type B admixture of 0.01-0.05wt% respectively, the C type admixture that adds 0.01-0.05wt% in the slag, the D type admixture that adds 5-15wt% respectively after the sorting behind the grinding in meal coal ash, furnace bottom slag and the boiling furnace slag
Wherein, A type admixture is a trolamine, the mixture of sodium sulfate and calcium chloride, and trolamine, the weight proportion of sodium sulfate and calcium chloride is 1-1.5: (2-3): (2-3), the Type B admixture is the mixture of methyl cellulose ether and sulfonated lignin, and the weight proportion of methyl cellulose ether and sulfonated lignin is 1-2: 4-6, these sulfonated lignin can be calcium lignin sulphonate or sodium lignosulfonate etc., C type admixture is the poly carboxylic acid efficient liquid water reducer of net content 40%, this poly carboxylic acid graft copolymer water reducer can be common maleic anhydride graft copolymer, acrylate graft copolymers, contain terminal sulfonic group graft copolymer, unsaturated polyether graft copolymer etc., D type admixture is the mixture of quickened lime and organic acid calcium salt, the weight proportion of quickened lime and organic acid calcium salt is 95-99: 1-5, and this organic acid calcium salt can be calcium formiate or lime acetate etc.;
3) each component that step 2 is obtained is carried out uniform mixing.
Wherein, the meal coal ash obtains as follows after the sorting: the former ash of flyash is carried out sorting, obtain meal coal ash after sorting I level ash and the sorting.
Further, the addition of above-mentioned A, B, three kinds of admixtures of C is preferably 0.03wt%.D type admixture addition is preferably 10%.
Further, use vibration mill that each component except that grog and slag is carried out superfine pulverizing in the step 2.
Further, the metered charge system of robot calculator DCS system control is used in the mixing of each component in the step 3, makes to mix and stable, helps the stable of this mixture character.
The present invention can produce the general purpose portland cement product that meets and be better than national standard [GB12958-1999] regulation through the cement composition that above-mentioned processing obtains.
Description of drawings
Accompanying drawing 1 is the preparation flow figure of cement composition of the present invention.
Embodiment
Embodiment 1
Meal coal ash, furnace bottom slag and boiling furnace slag after Portland clinker, gypsum, power plant desulfurization gypsum, Wingdale, slag, the sorting are carried out grinding, make that the specific surface area of above-mentioned each component is as follows: the specific surface area of Portland clinker is 300m
2/ kg, the specific surface area of gypsum is 750m
2/ kg, the specific surface area of power plant desulfurization gypsum is 700m
2/ kg, the specific surface area of Wingdale is 900m
2/ kg, scoriaceous specific surface area is 470m
2/ kg, the specific surface area of meal coal ash is 650m after the sorting
2/ kg, the specific surface area of furnace bottom slag is 700m
2/ kg, the specific surface area of boiling furnace slag is 700m
2/ kg;
2) add the A type admixture of 0.03wt% respectively in the Portland clinker behind the grinding, the gypsum, power plant desulfurization gypsum behind the grinding, Wingdale add the Type B admixture of 0.03wt% respectively, the C type admixture that adds 0.03wt% in the slag, the D type admixture that adds 5wt% respectively after the sorting behind the grinding in meal coal ash, furnace bottom slag and the boiling furnace slag
Wherein, A type admixture is the mixture of trolamine, sodium sulfate and calcium chloride, and the weight proportion of trolamine, sodium sulfate and calcium chloride is 1: 2: 2, the Type B admixture is the mixture of methyl cellulose ether and calcium lignin sulphonate, and the weight proportion of methyl cellulose ether and calcium lignin sulphonate is 1: 4, C type admixture is the poly carboxylic acid efficient liquid water reducer of net content 40%, D type admixture is the mixture of quickened lime, calcium formiate and lime acetate, and the weight proportion of quickened lime, calcium formiate and lime acetate is 99: 0.5: 0.5;
3) each component that step 2 is obtained is carried out uniform mixing, and this mixes the metered charge system that uses the control of robot calculator DCS system.
The key technical indexes of gained cement products is as follows: ultimate compression strength was not less than 19.0 in 3 days, ultimate compression strength was not less than 36.0 in 28 days, final setting time is not more than 6:30h (h is 6 hours 30 minutes), meets and be better than the silicate cement product of national standard [GB12958-1999] regulation.
Embodiment 2
Meal coal ash, furnace bottom slag and boiling furnace slag after Portland clinker, gypsum, power plant desulfurization gypsum, Wingdale, slag, the sorting are carried out grinding, make that the specific surface area of above-mentioned each component is as follows: the specific surface area of Portland clinker is 400m
2/ kg, the specific surface area of gypsum is 700m
2/ kg, the specific surface area of power plant desulfurization gypsum is 750m
2/ kg, the specific surface area of Wingdale is 1000m
2/ kg, scoriaceous specific surface area is 450m
2/ kg, the specific surface area of meal coal ash is 700m after the sorting
2/ kg, the specific surface area of furnace bottom slag is 600m
2/ kg, the specific surface area of boiling furnace slag is 600m
2/ kg;
2) add the A type admixture of 0.01wt% respectively in the Portland clinker behind the grinding, the gypsum, power plant desulfurization gypsum behind the grinding, Wingdale add the Type B admixture of 0.04wt% respectively, the C type admixture that adds 0.02wt% in the slag, the D type admixture that adds 10wt% respectively after the sorting behind the grinding in meal coal ash, furnace bottom slag and the boiling furnace slag
Wherein, A type admixture is the mixture of trolamine, sodium sulfate and calcium chloride, and the weight proportion of trolamine, sodium sulfate and calcium chloride is 1.5: 3: 2.5, the Type B admixture is the mixture of methyl cellulose ether and sulfonated lignin, and the weight proportion of methyl cellulose ether and sulfonated lignin is 2: 6, C type admixture is the poly carboxylic acid efficient liquid water reducer of net content 40%, D type admixture is the mixture of quickened lime, calcium formiate and lime acetate, and the weight proportion of quickened lime, calcium formiate and lime acetate is 95: 2: 3;
3) each component that step 2 is obtained is carried out uniform mixing, and this mixes the metered charge system that uses the control of robot calculator DCS system.
The key technical indexes of gained cement products is as follows: ultimate compression strength was not less than 19.0 in 3 days, ultimate compression strength was not less than 36.0 in 28 days, final setting time is not more than 6:30h (h is 6 hours 30 minutes), meets and be better than the silicate cement product of national standard [GB12958-1999] regulation.
Embodiment 3
Meal coal ash, furnace bottom slag and boiling furnace slag after Portland clinker, gypsum, power plant desulfurization gypsum, Wingdale, slag, the sorting are carried out grinding, make that the specific surface area of above-mentioned each component is as follows: the specific surface area of Portland clinker is 350m
2/ kg, gypsum, specific surface area be 800m
2/ kg, the specific surface area of power plant desulfurization gypsum is 800m
2/ kg, the specific surface area of Wingdale is 800m
2/ kg, scoriaceous specific surface area is 500m
2/ kg, the specific surface area of meal coal ash is 600m after the sorting
2/ kg, the specific surface area of furnace bottom slag is 650m
2/ kg, the specific surface area of boiling furnace slag is 650m
2/ kg;
2) add the A type admixture of 0.05wt% respectively in the Portland clinker behind the grinding, the gypsum, power plant desulfurization gypsum behind the grinding, Wingdale add the Type B admixture of 0.01wt% respectively, the C type admixture that adds 0.05wt% in the slag, the D type admixture that adds 15wt% respectively after the sorting behind the grinding in meal coal ash, furnace bottom slag and the boiling furnace slag
Wherein, A type admixture is the mixture of trolamine, sodium sulfate and calcium chloride, and the weight proportion of trolamine, sodium sulfate and calcium chloride is 1: 2: 3, the Type B admixture is the mixture of methyl cellulose ether and sulfonated lignin, and the weight proportion of methyl cellulose ether and sulfonated lignin is 1: 5, C type admixture is the poly carboxylic acid efficient liquid water reducer of net content 40%, D type admixture is the mixture of quickened lime and lime acetate, and the weight proportion of quickened lime and lime acetate is 98: 2;
3) each component that step 2 is obtained is carried out uniform mixing, and this mixes the metered charge system that uses the control of robot calculator DCS system.
The key technical indexes of gained cement products is as follows: ultimate compression strength was not less than 19.0 in 3 days, ultimate compression strength was not less than 36.0 in 28 days, final setting time is not more than 6:30h (h is 6 hours 30 minutes), meets and be better than the silicate cement product of national standard [GB12958-1999] regulation.
Claims (7)
1. a cement composition is characterized in that, comprises meal coal ash after Portland clinker, gypsum, power plant desulfurization gypsum, Wingdale, slag, the sorting, furnace bottom slag and boiling furnace slag.
2. cement composition as claimed in claim 1 is characterized in that, each components contents is as follows:
Portland clinker 30-50 weight part
Gypsum 1-5 weight part
Power plant desulfurization gypsum 1-5 weight part
Lime 2-10 weight part
Slag 10-30 weight part
Meal coal ash 10-30 weight part after the sorting
Furnace bottom slag 2-10 weight part
Boiling furnace slag 2-10 weight part.
3. cement composition as claimed in claim 1 or 2 is characterized in that, the specific surface area of Portland clinker is 300-400m
2/ kg, the specific surface area of gypsum is 700-800m
2/ kg, the specific surface area of power plant desulfurization gypsum is 700-800m
2/ kg, the specific surface area of Wingdale is 800-1000m
2/ kg, scoriaceous specific surface area is 450-500m
2/ kg, the specific surface area of meal coal ash is 600-700m after the sorting
2/ kg, the specific surface area of furnace bottom slag is 600-700m
2/ kg, the specific surface area of boiling furnace slag is 600-700m
2/ kg.
4. a method for preparing as each described cement composition of claim 1-3 is characterized in that, comprises the steps:
1) meal coal ash, furnace bottom slag and boiling furnace slag after Portland clinker, gypsum, power plant desulfurization gypsum, Wingdale, slag, the sorting are carried out grinding respectively, make that the specific surface area of above-mentioned each component is as follows: the specific surface area of Portland clinker is 300-400m
2/ kg, the specific surface area of gypsum is 700-800m
2/ kg, the specific surface area of power plant desulfurization gypsum is 700-800m
2/ kg, the specific surface area of Wingdale is 800-1000m
2/ kg, scoriaceous specific surface area is 450-500m
2/ kg, the specific surface area of meal coal ash is 600-700m after the sorting
2/ kg, the specific surface area of furnace bottom slag is 600-700m
2/ kg, the specific surface area of boiling furnace slag is 600-700m
2/ kg;
2) add the A type admixture of 0.01-0.05wt% respectively in the Portland clinker behind the grinding, the gypsum, power plant desulfurization gypsum behind the grinding, Wingdale add the Type B admixture of 0.01-0.05wt% respectively, the C type admixture that adds 0.01-0.05wt% in the slag, the D type admixture that adds 5-15wt% respectively after the sorting behind the grinding in meal coal ash, furnace bottom slag and the boiling furnace slag
Wherein, A type admixture is the mixture of trolamine, sodium sulfate and calcium chloride, and the weight proportion of trolamine, sodium sulfate and calcium chloride is 1-1.5: (2-3): (2-3), the Type B admixture is the mixture of methyl cellulose ether and sulfonated lignin, and the weight proportion of methyl cellulose ether and sulfonated lignin is 1-2: 4-6, C type admixture is the high-efficiency water-reducing agent of poly-carboxylic acid of net content 40%, D type admixture is the mixture of quickened lime and organic acid calcium salt, and the weight proportion of quickened lime and organic acid calcium salt is 95-99: 1-5;
3) each component that step 2 is obtained is carried out uniform mixing.
5. method as claimed in claim 4 is characterized in that, described sulfonated lignin are that calcium lignin sulphonate and sodium lignosulfonate mixed by weight 1: 1.
6. as claim 4 or 5 each described methods, it is characterized in that described quickened lime is meant that rate of decomposition is 90-98%, decomposition temperature 900-1050 ℃ active lime calcination.
7. as each described method of claim 4-6, it is characterized in that described organic acid calcium salt is calcium formiate or lime acetate.
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| CN201010215079A CN101870576A (en) | 2010-07-01 | 2010-07-01 | Cement composition and preparation method thereof |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410049878.4A Division CN103833248B (en) | 2010-07-01 | 2010-07-01 | Cement composition |
| CN201410049827.1A Division CN103803822B (en) | 2010-07-01 | 2010-07-01 | Cement composition |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591564A (en) * | 2015-01-06 | 2015-05-06 | 清水河县蒙西水泥有限公司 | Burnt rock cement mixture and burnt rock cement |
| CN105417979A (en) * | 2014-09-22 | 2016-03-23 | 武汉鸿信通科技有限公司 | Preparation method for low-expansion cement |
| CN105503001A (en) * | 2014-09-22 | 2016-04-20 | 武汉鸿信通科技有限公司 | Low-expansion cement |
| CN106278050A (en) * | 2016-08-19 | 2017-01-04 | 宁夏博大新型建材有限公司 | High-early (strength) cement base gelating material for prefabrication component |
| CN107098610A (en) * | 2017-05-17 | 2017-08-29 | 洛阳宏昌水泥有限公司 | A kind of cement ingredient of utilization bottom slag |
| CN108529911A (en) * | 2018-06-20 | 2018-09-14 | 湖南辰砾新材料有限公司 | A kind of environment protection architecture cement |
| CN110698095A (en) * | 2019-11-26 | 2020-01-17 | 衡阳县海华水泥有限责任公司 | Cement and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105417979A (en) * | 2014-09-22 | 2016-03-23 | 武汉鸿信通科技有限公司 | Preparation method for low-expansion cement |
| CN105503001A (en) * | 2014-09-22 | 2016-04-20 | 武汉鸿信通科技有限公司 | Low-expansion cement |
| CN104591564A (en) * | 2015-01-06 | 2015-05-06 | 清水河县蒙西水泥有限公司 | Burnt rock cement mixture and burnt rock cement |
| CN106278050A (en) * | 2016-08-19 | 2017-01-04 | 宁夏博大新型建材有限公司 | High-early (strength) cement base gelating material for prefabrication component |
| CN107098610A (en) * | 2017-05-17 | 2017-08-29 | 洛阳宏昌水泥有限公司 | A kind of cement ingredient of utilization bottom slag |
| CN108529911A (en) * | 2018-06-20 | 2018-09-14 | 湖南辰砾新材料有限公司 | A kind of environment protection architecture cement |
| CN108529911B (en) * | 2018-06-20 | 2020-10-09 | 陈磊 | Environment-friendly building cement |
| CN110698095A (en) * | 2019-11-26 | 2020-01-17 | 衡阳县海华水泥有限责任公司 | Cement and preparation method thereof |
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