CN103803822B - Cement composition - Google Patents
Cement composition Download PDFInfo
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- CN103803822B CN103803822B CN201410049827.1A CN201410049827A CN103803822B CN 103803822 B CN103803822 B CN 103803822B CN 201410049827 A CN201410049827 A CN 201410049827A CN 103803822 B CN103803822 B CN 103803822B
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- surface area
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- gypsum
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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
- 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
Abstract
The invention relates to a cement composition and a preparation method thereof. Kinds of raw materials and semi-finished products for producing cement are mixed according to different dispersities to form the cement composition due to different grindabilities, so that the physical action and the chemical action are greatly different. By adopting the cement composition and the preparation method disclosed by the invention, the effects of limestone, slag, and coarse fly ashes after separation can be played to the maximal extent, and reduction of the production cost of the cement composition and improvement of the overall performance of the cement composition are facilitated. The cement composition comprises a portland cement clinker, gypsum, desulfurization gypsum in a power plant, limestone, slag, coarse fly ashes after separation, blaster furnace slag, boiling furnace slag and the like.
Description
Technical field
The present patent application is on 07 01st, 2010 applying date, and application number is: 201010215079.1, and name is called the divisional application of the application for a patent for invention of " a kind of cement composition and preparation method thereof ".The present invention relates to a kind of cement composition.
Background technology
Traditionally, in order to simplify production technique,, do not make any distinction between and enter the dispersity that is milled down to regulation in same milling equipment the various starting material, work in-process of producing cement in cement mill after measuring fixed amount mixes.The quality control of this process, screen over-size sieves to control by water sieve or negative pressure in some enterprise, and some enterprise carrys out control ratio surface-area with ratio surface area instrument, and minority enterprise analyzes the granule-morphology of cement products with laser fineness gage.
In recent years, some enterprise has adopted will dry slag separate grinding, but will grog, gypsum, flyash and other blended material concentrate the technique of grinding, have realized that the grindability of slag is poor and in the time that it is milled down to higher dispersity, can use more slag to substitute grog and do not affect and the physical and chemical index such as the intensity of the cement that makes moderate progress.
Gypsum is Nonrenewable resources, and power plant desulfurization gypsum is a kind of industry byproduct, is under the effect of high-temperature steam, to absorb the sulfurous gas in flue gas with limestone powder, and displaces the secondary industrial residue forming after carbonic acid gas.
Collect from power plant's dust-removal system the powder mix coal ash getting off and be called as the former ash of flyash (also having the combination ash of being called as, system ash, flying dust [fly ash]), sub-elect with aerodynamic principle the sorting ash that a part has superior physics and chemical property 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: more than [GB1596-91] 0.045 square hole sieve, be less than 12%, loss on ignition is less than 5%, and after sorting, remaining part is called as reject fly ash after sorting, belongs to industrial residue.
Existing cement grinding process exists and will carry out grinding and by the needs technical problem that more component of high degree of dispersion is disengaged in advance and its effect can not be utilized effectively without the component of crossing high degree of dispersion.
Summary of the invention
The object of the present invention is to provide a kind of cement composition.The chemically reactive that has solved active mixed material (as slag), potential volcanic ash blended material (as reject fly ash, boiling furnace slag etc. after sorting) discharges in advance, and reduces Portland clinker consumption and reduce the hydration heat of cement composition, the effect of strength of stability growth curve to reach.
A kind of cement composition, comprises reject fly ash after Portland clinker, gypsum, power plant desulfurization gypsum, Wingdale, slag, sorting, furnace bottom slag and boiling furnace slag.
Wherein, after sorting, reject fly ash obtains as follows: former flyash ash (as collected from power plant's dust-removal system) is carried out to sorting, obtain reject fly ash after sorting I level ash and 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
Reject fly ash 10-30 weight part after 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, the specific surface area of slag is 450-500m
2/ kg, after sorting, the specific surface area of reject fly ash is 600-700m
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 method of preparing above-mentioned cement composition, comprises the steps:
1) reject fly ash, furnace bottom slag and boiling furnace slag after Portland clinker, gypsum, power plant desulfurization gypsum, Wingdale, slag, sorting are carried out respectively to grinding, make the specific surface area of above-mentioned each component 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, the specific surface area of slag is 450-500m
2/ kg, after sorting, the specific surface area of reject fly ash is 600-700m
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) respectively toward the A type admixture that adds 0.01-0.05wt% in the Portland clinker after grinding, gypsum, respectively toward the power plant desulfurization gypsum after grinding, the Type B admixture that Wingdale adds 0.01-0.05wt%, toward the C type admixture that adds 0.01-0.05wt% in slag, respectively toward the D type admixture that adds 5-15wt% in reject fly ash, furnace bottom slag and boiling furnace slag after the sorting after grinding
Wherein, A type admixture is 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), 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, containing end 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, this organic acid calcium salt can be calcium formiate or lime acetate etc.,
3) each component step 2 being obtained is evenly mixed.
Wherein, after sorting, reject fly ash obtains as follows: former flyash ash is carried out to sorting, obtain reject fly ash after sorting I level ash and sorting.
Further, the addition of above-mentioned A, B, tri-kinds of admixtures of C is preferably 0.03wt%.D type admixture addition is preferably 10%.Described sulfonated lignin are that calcium lignin sulphonate and sodium lignosulfonate mix by weight 1:1; Described quickened lime refers to that rate of decomposition is 90-98%, the active lime calcination of decomposition temperature 900-1050 DEG C.
Further, in step 2, use vibration mill to carry out superfine pulverizing to the each component except grog and slag.
Further, in step 3, the mixing of each component is used the metered charge system of robot calculator DCS system control, makes to mix and stablizes, and is conducive to the stable of this mixture character.
The cement composition that the present invention obtains through above-mentioned processing, can produce the general purpose portland cement product that meets and be better than national standard [GB12958-1999] regulation.
Brief description of the drawings
Accompanying drawing 1 is the preparation flow figure of cement composition of the present invention.
Embodiment
Embodiment 1
Reject fly ash, furnace bottom slag and boiling furnace slag after Portland clinker, gypsum, power plant desulfurization gypsum, Wingdale, slag, sorting are carried out to grinding, make the specific surface area of above-mentioned each component 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, the specific surface area of slag is 470m
2/ kg, after sorting, the specific surface area of reject fly ash is 650m
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) respectively toward the A type admixture that adds 0.03wt% in the Portland clinker after grinding, gypsum, respectively toward the power plant desulfurization gypsum after grinding, the Type B admixture that Wingdale adds 0.03wt%, toward the C type admixture that adds 0.03wt% in slag, respectively toward the D type admixture that adds 5wt% in reject fly ash, furnace bottom slag and boiling furnace slag after the sorting after grinding
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, 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 step 2 being obtained is evenly mixed, and this mixing is used the metered charge system of robot calculator DCS system control.
The key technical indexes of gained cement products is as follows: within 3 days, ultimate compression strength is not less than 19.0, within 28 days, ultimate compression strength is not less than 36.0, 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
Reject fly ash, furnace bottom slag and boiling furnace slag after Portland clinker, gypsum, power plant desulfurization gypsum, Wingdale, slag, sorting are carried out to grinding, make the specific surface area of above-mentioned each component 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, the specific surface area of slag is 450m
2/ kg, after sorting, the specific surface area of reject fly ash is 700m
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) respectively toward the A type admixture that adds 0.01wt% in the Portland clinker after grinding, gypsum, respectively toward the power plant desulfurization gypsum after grinding, the Type B admixture that Wingdale adds 0.04wt%, toward the C type admixture that adds 0.02wt% in slag, respectively toward the D type admixture that adds 10wt% in reject fly ash, furnace bottom slag and boiling furnace slag after the sorting after grinding
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, 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 step 2 being obtained is evenly mixed, and this mixing is used the metered charge system of robot calculator DCS system control.
The key technical indexes of gained cement products is as follows: within 3 days, ultimate compression strength is not less than 19.0, within 28 days, ultimate compression strength is not less than 36.0, 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
Reject fly ash, furnace bottom slag and boiling furnace slag after Portland clinker, gypsum, power plant desulfurization gypsum, Wingdale, slag, sorting are carried out to grinding, make the specific surface area of above-mentioned each component 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, the specific surface area of slag is 500m
2/ kg, after sorting, the specific surface area of reject fly ash is 600m
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) respectively toward the A type admixture that adds 0.05wt% in the Portland clinker after grinding, gypsum, respectively toward the power plant desulfurization gypsum after grinding, the Type B admixture that Wingdale adds 0.01wt%, toward the C type admixture that adds 0.05wt% in slag, respectively toward the D type admixture that adds 15wt% in reject fly ash, furnace bottom slag and boiling furnace slag after the sorting after grinding
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, 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%, and 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 step 2 being obtained is evenly mixed, and this mixing is used the metered charge system of robot calculator DCS system control.
The key technical indexes of gained cement products is as follows: within 3 days, ultimate compression strength is not less than 19.0, within 28 days, ultimate compression strength is not less than 36.0, 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 (1)
1. a cement composition, comprises reject fly ash after Portland clinker, gypsum, power plant desulfurization gypsum, Wingdale, slag, sorting, furnace bottom slag and boiling furnace slag, and 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 furnace bottom slag is 600-700m
2/ kg, the specific surface area of boiling furnace slag is 600-700m
2/ kg, after sorting, the specific surface area of reject fly ash is 600-700m
2/ kg, wherein, after sorting, reject fly ash obtains as follows: former flyash ash is carried out to sorting, obtain reject fly ash after sorting I level ash and sorting,
The content 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
Reject fly ash 10-30 weight part after 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 Wingdale is 800-1000m
2/ kg, the specific surface area of slag is 450-500m
2/ kg, prepare the method for described cement composition, comprise the steps: 1) reject fly ash, furnace bottom slag and boiling furnace slag after Portland clinker, gypsum, power plant desulfurization gypsum, Wingdale, slag, sorting are carried out respectively to grinding, make the specific surface area of above-mentioned each component 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, the specific surface area of slag is 450-500m
2/ kg, after sorting, the specific surface area of reject fly ash is 600-700m
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) respectively toward the Portland clinker after grinding, in gypsum, add the A type admixture of 0.01-0.05wt%, respectively toward the power plant desulfurization gypsum after grinding, Wingdale adds the Type B admixture of 0.01-0.05wt%, toward the C type admixture that adds 0.01-0.05wt% in slag, respectively toward reject fly ash after the sorting after grinding, in furnace bottom slag and boiling furnace slag, add the D type admixture of 5-15wt%, wherein, A type admixture is 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), 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 poly carboxylic acid efficient liquid water reducer of net content 40%, 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, described organic acid calcium salt is calcium formiate, described quickened lime refers to that rate of decomposition is 90-98%, the active lime calcination of decomposition temperature 900-1050 DEG C, described sulfonated lignin are that calcium lignin sulphonate and sodium lignosulfonate mix by weight 1:1, 3) each component step 2 being obtained is evenly mixed.
Priority Applications (1)
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|---|---|---|---|
| CN201410049827.1A CN103803822B (en) | 2010-07-01 | 2010-07-01 | Cement composition |
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|---|---|---|---|
| CN201410049827.1A CN103803822B (en) | 2010-07-01 | 2010-07-01 | Cement composition |
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|---|---|---|---|
| CN201010215079A Division CN101870576A (en) | 2010-07-01 | 2010-07-01 | Cement composition and preparation method thereof |
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| CN103803822A CN103803822A (en) | 2014-05-21 |
| CN103803822B true CN103803822B (en) | 2014-11-19 |
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| CN110845157A (en) * | 2019-11-14 | 2020-02-28 | 四川省星船城水泥股份有限公司 | Process technology for changing components of gypsum in power plant under different working conditions |
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| US6213415B1 (en) * | 1999-09-13 | 2001-04-10 | W.R. Grace & Co.-Conn. | Process for improving grinding of cement clinker in mills employing rollers |
| CN101337779B (en) * | 2008-07-11 | 2010-11-10 | 南京师范大学 | Additive of composite portland cement and producing method thereof |
| CN101337777B (en) * | 2008-08-14 | 2012-07-04 | 宋云星 | Novel low carbon complex cement |
| CN101386494A (en) * | 2008-10-30 | 2009-03-18 | 盐城工学院 | Composite gelate material and preparation method thereof |
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Effective date of registration: 20161010 Address after: 225510, Ma 986 Road, Jiangyan District, Jiangsu, Taizhou Patentee after: 5ELEM HI-TECH CORPORATION Address before: 315041 Zhejiang province Ningbo City Jiangdong District Yonggang 52 Lane Road No. 306 room 14 Patentee before: Chen Min |