CN103641349A - Additive capable of improving grain composition of cement and preparation method thereof - Google Patents
Additive capable of improving grain composition of cement and preparation method thereof Download PDFInfo
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- CN103641349A CN103641349A CN201310659936.0A CN201310659936A CN103641349A CN 103641349 A CN103641349 A CN 103641349A CN 201310659936 A CN201310659936 A CN 201310659936A CN 103641349 A CN103641349 A CN 103641349A
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Abstract
The invention discloses an additive capable of improving grain composition of cement, and a preparation method of the additive. The additive capable of improving the grain composition of the cement consists of the following components in percentage by weight: 15-30% of triethanolamine, 12.5-20% of diethylene glycol, 7.5-15% of sodium acetate and the balance of water. By adopting the additive, the grain composition of the cement can be improved, the strength of the cement is improved, and the capacity and production efficiency of the cement are improved.
Description
Technical field
The present invention relates to technology of producing cement field, relate in particular to a kind of additive that can improve cement granules grating and preparation method thereof.
Background technology
Cement clinker and blended material by a certain percentage grinding form cement products after certain fineness, and the grain diameter in cement products more than 95% is between 0 ~ 80 μ m.Granular size and hydrated cementitious speed have direct correlation, also directly affect the performance of cement simultaneously.0 ~ 10 μ m particle, 1d aquation is large 75%, and 28d approaches completely; 10 ~ 30 μ m particles, 7d aquation approaches half; 30 ~ 60 μ m particles, 28d aquation approaches half; Be greater than 60 μ m particles, within 3 months, aquation is less than half.Obviously, excessively thick particle is less on the impact of cement hydration process and intensity thereof, only plays filler effect; And the possibility conglomeration of meticulous particle or increase cement water requirement, before slurry sclerosis, completed hydration process, very little to the contribution of the intensity of cement, only have the grog particle of 3 ~ 32 μ m to play Main Function to the contribution of strength of cement, particularly important to the performance impact of cement.
In cement pulverizing course, material from large to small, from the coarse to fine, this process is accompanied by the chemical transformation of physical change that specific surface area increases and Si-O, Ca-O chemical bond rupture, the phenomenon that grinding there will be small-particle conglomeration even to stick with paste ball, stick with paste mill to a certain extent afterwards.Add a small amount of cement grinding additive, can be adsorbed in the surface in particle surface or particle crack, low surface energy falls, eliminate " reunion " of subparticle, reduce the paste mill phenomenon of fine powder " paste ball ", " paste liner plate " in mill, can significantly improve cement unit-hour output, reduce grinding energy, can improve cement granules size distribution, improve the ratio of 3 ~ 32 μ m particles, improve the performance of cement simultaneously.
Application number is that 200610037920.6 Chinese patent < < cement intensifier, its preparation and application > > disclose a kind of cement intensifier, mainly comprise trolamine 2 ~ 4%, glycerol 3 ~ 5%, glycol ether 8 ~ 15%, malt sugar 15 ~ 20%, sodium sulphite anhydrous 99.3 2 ~ 4%, ethylene glycol 0 ~ 1%, propylene glycol 0 ~ 10%, sodium-acetate 0 ~ 10%, Sodium hexametaphosphate 99 0 ~ 2% and water.This invention is mainly the intensity that improves cement, and the effect in grain composition is not obviously special, and raw material used is more, and cost is higher.
Summary of the invention
In order to overcome the defect of prior art, the object of the present invention is to provide a kind ofly improve cement granules grating, refinforced cement intensity, improve cement output and production efficiency, the additive that can improve cement granules grating that cost is low and preparation method thereof.
Object of the present invention is achieved by the following technical programs:
Can improve an additive for cement granules grating, by following each component, be formed:
Trolamine 15 ~ 30%,
Glycol ether 12.5 ~ 20%,
Sodium-acetate 7.5 ~ 15%,
Surplus is water,
Described per-cent is mass percent.
The additive that improves cement grating of the present invention, material forms and has comprised trolamine, glycol ether and three kinds of surfactants of sodium-acetate.Trolamine polarity is very strong, and the aqueous solution is alkalescence, and metal ion and mineral substance interaction in can chelating cement, have certain grinding aid enhancement to cement; Glycol ether is the small-molecule active substance that contains hydroxyl, can be adsorbed on cement particle surface, the surface that reduces cement granules can, cement is had to obvious grinding aid effect, glycol ether and trolamine are compound can have promoter action to grinding-aid effect, also reduce the consumption of trolamine, reduce material cost simultaneously; Sodium-acetate contains COO
-group, can be penetrated into the depths of cement clinker crackle, and it is produced to strong " wedge splits " effect, and Crack prevention heals again, and to cement granules, refinement has promoter action.
The described preparation method that can improve the additive of cement granules grating, comprises the steps:
S1. water is injected to reactor, add sodium-acetate, stir 10 ~ 15min;
S2. add trolamine and glycol ether, stir 5 ~ 10min, obtain the additive that can improve cement granules grating.
Because sodium-acetate is lenticular, thus first dissolved, and then add trolamine and glycol ether.
Further,, when manufacture of cement, be applied to ball mill, be applicable to silicate cement, composite Portland cement.Addition content when cement grinding or use is 0.025 ~ 0.04 % by weight.
Compared with prior art, the present invention has following beneficial effect:
1. volume is low; Addition content when cement grinding or use is below 0.04%;
2. its good stability, can significantly improve cement granules grating after mixing, and the particle ratio of 3 ~ 34 μ m improves 8% ~ 18%;
3. mix 3 days intensity of cement of the present invention and improve 1 ~ 3 MPa, within 28 days, intensity improves 2-5MPa;
4. can improve cement grinding unit-hour output 15 ~ 25%, mill efficiency improves obviously, has greatly saved power consumption;
5. cost is low, and preparation is simple; The present invention only adopts three kinds of raw materials, than existing additive, is more than five or six kinds material compositions mostly, obviously in cost control, has superiority.
Embodiment
Below in conjunction with specific embodiment, the present invention is made further and being elaborated, but embodiment does not limit in any form the present invention.
Embodiment 1
Can improve an additive for cement granules grating, by following each component, be formed:
Trolamine 15%,
Glycol ether 12.5%,
Sodium-acetate 7.5%,
Water 65%,
Described per-cent is mass percent.
The described preparation method that can improve the additive of cement granules grating comprises the steps:
S1. water is injected to reactor, add sodium-acetate, stir 10min;
S2. add trolamine and glycol ether, stir 5min, obtain the additive that can improve cement granules grating.
Embodiment 2
Except improving each component percentages difference of additive of cement granules grating, other conditions are with embodiment 1;
The described additive that can improve cement granules grating is comprised of following each component:
Trolamine 30%,
Glycol ether 20%,
Sodium-acetate 15%,
Water 35%,
Described per-cent is mass percent.
Embodiment 3
Except improving each component percentages difference of additive of cement granules grating, other conditions are with embodiment 1;
The described additive that can improve cement granules grating is comprised of following each component:
Trolamine 23%;
Glycol ether 17%;
Sodium-acetate 12%,
Water 48%.
Described per-cent is mass percent.
Comparative example 1
Except improving each component percentages difference of additive of cement granules grating, other conditions are with embodiment 1;
The described additive that can improve cement granules grating is comprised of following each component:
Trolamine 14%,
Glycol ether 12%,
Sodium-acetate 7%,
Water 66%,
Described per-cent is mass percent.
Comparative example 2
Except improving each component percentages difference of additive of cement granules grating, other conditions are with embodiment 1;
The described additive that can improve cement granules grating is comprised of following each component:
Trolamine 31%,
Glycol ether 21%,
Sodium-acetate 16%,
Water 32%,
Described per-cent is mass percent.
Embodiment 4
The impact of the additive that can improve cement granules grating on cement granules grating
The embodiment of the present invention 1 ~ 3 and comparative example 1 ~ 2 gained cement grinding aid are applied in to the little mill of Φ 500mmx500mm standard test, cement proportion: conch cement clinker 95%, natural dihydrate gypsum 5%; Grinding quality 5Kg; Grinding time 27min.Mix the embodiment of the present invention 1 ~ 3 and comparative example 1 ~ 3 cement grinding aid on the situation that affects of cement granularity distribution in Table 1
Table 1 admixture embodiment of the present invention 1-3 and comparative example 1 ~ 2 cement grinding aid are to cement granules grain diameter influence distribution situation
| Cement additire | Volume (%) | ≤3μm | 3-34 μm | 34-67μm | ≥67μm |
| Blank | 0 | 4.80 | 64.98 | 18.28 | 11.95 |
| Embodiment 1 | 0.03 | 6.32 | 74.74 | 11.99 | 6.95 |
| Embodiment 2 | 0.03 | 6.65 | 75.35 | 11.12 | 6.88 |
| Embodiment 3 | 0.03 | 7.94 | 76.75 | 10.31 | 5.00 |
| Comparative example 1 | 0.03 | 6.05 | 71.85 | 12.95 | 9.15 |
| Comparative example 2 | 0.03 | 6.85 | 70.65 | 15.04 | 7.46 |
By blank, can find out with the contrast of embodiment: be mixed with cement grinding additive of the present invention, 3-34 μ m particle in cement sample obviously increases, being greater than 67 μ m particles obviously reduces by embodiment 1 ~ 3 and comparative example 1,2 contrast, can find out that its proportioning must be within the scope of the invention for optimum.
Embodiment 5
Can improve the impact of the additive of cement granules grating on strength of cement
The embodiment of the present invention 1 ~ 3 and comparative example 1 ~ 3 gained cement grinding aid are applied in to the little mill of Φ 500mmx500mm standard test, cement proportion: conch cement clinker 95%, natural dihydrate gypsum 5%, cement grinding additive volume is 0.03%; Grinding quality 5Kg; Grinding time 27min.According to GB/T17671-1999 < < Test method for strength of hydraulic cement mortar > > test intensity, test result is in Table 2,
The cement grinding aid of table 2 admixture embodiment of the present invention 1-3 and comparative example 1 ~ 3 affects situation to strength of cement
By table 2 comparative example 1 ~ 3 and comparative example 1,2, in the data aspect folding strength and ultimate compression strength, all can find out, embodiment 1 ~ 3 each component formula is optimum.
Claims (3)
1. can improve an additive for cement granules grating, it is characterized in that, by following each component, be formed:
Trolamine 15 ~ 30%,
Glycol ether 12.5 ~ 20%,
Sodium-acetate 7.5 ~ 15%,
Surplus is water,
Described per-cent is mass percent.
2. can improve according to claim 1 the preparation method of the additive of cement granules grating, it is characterized in that, comprise the steps:
S1. water is injected to reactor, add sodium-acetate, stir 10 ~ 15min;
S2. add trolamine and glycol ether, stir 5 ~ 10min, obtain the additive that can improve cement granules grating.
3. the additive that can improve cement granules grating according to claim 1, is characterized in that, addition content when cement grinding or use is 0.025 ~ 0.04 % by weight.
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| CN201310659936.0A CN103641349A (en) | 2013-12-09 | 2013-12-09 | Additive capable of improving grain composition of cement and preparation method thereof |
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| CN201310659936.0A CN103641349A (en) | 2013-12-09 | 2013-12-09 | Additive capable of improving grain composition of cement and preparation method thereof |
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| CN103641349A true CN103641349A (en) | 2014-03-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106915910A (en) * | 2017-03-31 | 2017-07-04 | 王秀贵 | A kind of activity excitant of nonactive volcanic ash and preparation method thereof |
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|---|---|---|---|---|
| KR20050108767A (en) * | 2004-05-13 | 2005-11-17 | 경남유화 주식회사 | Cement grinding aid composition |
| CN1803692A (en) * | 2006-01-20 | 2006-07-19 | 徐福明 | Cement grinding aid and preparation method thereof |
| CN102372454A (en) * | 2010-08-16 | 2012-03-14 | 广州基业长青化工有限公司 | Cement grinding aid |
| CN102838311A (en) * | 2012-07-27 | 2012-12-26 | 浙江华骏建材有限公司 | Composite cement grinding aid and preparation method thereof |
-
2013
- 2013-12-09 CN CN201310659936.0A patent/CN103641349A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050108767A (en) * | 2004-05-13 | 2005-11-17 | 경남유화 주식회사 | Cement grinding aid composition |
| CN1803692A (en) * | 2006-01-20 | 2006-07-19 | 徐福明 | Cement grinding aid and preparation method thereof |
| CN102372454A (en) * | 2010-08-16 | 2012-03-14 | 广州基业长青化工有限公司 | Cement grinding aid |
| CN102838311A (en) * | 2012-07-27 | 2012-12-26 | 浙江华骏建材有限公司 | Composite cement grinding aid and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| 陈冀渝: "用助磨剂高效磨制高细度水泥", 《四川水泥》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106915910A (en) * | 2017-03-31 | 2017-07-04 | 王秀贵 | A kind of activity excitant of nonactive volcanic ash and preparation method thereof |
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Application publication date: 20140319 |