CN102718429A - Enhanced cement grinding aid and preparation method thereof - Google Patents
Enhanced cement grinding aid and preparation method thereof Download PDFInfo
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- CN102718429A CN102718429A CN2012102096921A CN201210209692A CN102718429A CN 102718429 A CN102718429 A CN 102718429A CN 2012102096921 A CN2012102096921 A CN 2012102096921A CN 201210209692 A CN201210209692 A CN 201210209692A CN 102718429 A CN102718429 A CN 102718429A
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Abstract
The invention relates to an enhanced cement grinding aid and a preparation method thereof. The enhanced cement grinding aid comprises the following raw materials by mass percent: 5 to 20% of triethanolamine, 5 to 20% of diethanolamine single isopropyl alcohol amine, 20 to 50% of diisopropyl monoethanolamine, 5 to 8% of propylene glycol, 2 to 8% of lignosulfonate, 3 to 10% of sodium lauryl sulfate, 3 to 10% of sodium humate and 10 to 30% of water. The invention further comprises the preparation method of the enhanced cement grinding aid. The prepared enhanced cement grinding aid has the advantages that the strength of cement is improved, the production efficiency is improved, and the cost is lowered.
Description
Technical field
The present invention relates to a kind of cement grinding aid and preparation method thereof, especially relate to a kind of enhanced cement grinding aid and preparation method thereof.
Background technology
Grinding is an important step in the cement production process.Along with the development of grinding technology, novel milling equipments such as Vertical Mill, small planet mill have appearred now; Yet because the manufacturing cost of these equipment is high and not clear to finished cement particle performance impact, it still can not be widely used in manufacture of cement in a short time.Change in the process of finished cement at cement clinker, most of manufacture of cement merchants also are to use traditional ball mill to carry out cement grinding.Ball mill is applied to the pulverizing of ore the earliest, makes its particle size reduction, and specific surface area increases.Although the use of ball mill has considerable time, low this shortcoming of ball mill mill efficiency does not obtain basic improvement.In the energy that grinding machine consumed, quite a few energy changes acoustic energy, heat energy etc. into, and really be used for material grinding the not enough grinding machine total energy consumption of energy consumption 5%.
Cement grinding aid is a kind of chemical admixture that improves mill grinding efficiency, improves cement performance; Generally be directly add in the cement mill or go into to grind on the belt, get into cement grinding mill together with cement clinker or other blended material and carry out grinding through being added to cement clinker.After grinding aid got into grinding machine with cement clinker, it was attracted on material particles surface and the crackle.Because grinding aid has the polar molecular structure characteristic; The foreign ion that it the provided static electric charge that cement clinker produces because of friction in grinding process that neutralized on the one hand; Reduced subparticle accumulative ability; The grog particle is separated with powder grinding medium, reduce or prevented slimeball, stick with paste the mill phenomenon.On the other hand, grinding aid plays a part the superfluous valence link in balance granules surface in the material grinding process.The foreign ion balance that its is introduced new formations surface go up unsaturated electrovalent bond, make the surface energy reduction, eliminate thus or weaken that crackle heals again, particle accumulative trend once more.The use of grinding aid not only makes cement granules reach better dispersion state, has also improved the friability of cement granules simultaneously.
The use of cement grinding aid can improve mill efficiency and the mill output of unit time, the energy consumption that reduces grinding machine and the loss of ball mill, thereby reduces the Cement Production cost.The history of the existing many decades of grinding aid is used in external cement mill, and the external cement grinding overwhelming majority uses grinding aid, uses grinding aid, and is effectively simple, as use proper 10%～40% the mill efficiency that improves.The output of China's cement in 2011 reaches 20.6 hundred million tons, accounts for about 60% of world's cement output, and the grinding aid that domestic manufacturer produces also has very big gap with external product on effect and stability.Most of cement grinding aid enterprise adopts to buy the composite production technique of industrial chemicals, and the threshold that gets into this industry is lower, and most cement grinding aid enterprise production technologies fall behind, management is lack of standardization, and quality product and cost performance are not high.At present, cement in China grinding aid product has powder and two kinds of forms of liquid, and the liquid volume is 0.02% ~ 0.2%, and the powder volume is 0.5% ~ 1.0%, and southern enterprise uses liquid product more, and northern part enterprise uses powder product.Cement in China grinding aid patent is most of to be powder product (wherein most of products contain various hardening accelerator), and the staple in the powder grinding aid is villaumite and sodium sulfate.But; Cl ions in the villaumite is to cause steel bar corrosion, causes the major cause of reinforced concrete structure failure, and sulfate ion in the sodium sulfate and the calcium ion in the cement generate calcium sulfate; Its coefficient of expansion is big; Cause the concrete swelling cracking, therefore, powder grinding aid joins can cause some potential harm in the cement.
Summary of the invention
The technical problem that the present invention will solve is, overcomes the deficiency of prior art, and a kind of enhanced cement grinding aid and preparation method thereof is provided, and uses this cement grinding aid, can improve cement intensity, enhances productivity, and reduces cost.
The present invention's enhanced cement grinding aid is processed by the raw material of following massfraction: trolamine 5-20%, di-alcohol monoisopropanolamine 5-20%; Di-isopropyl monoethanolamine 20-50%; Ucar 35 5-8%, sulfonated lignin 2-8%, sodium laurylsulfate 3-10%; Sodium humate 3-10%, water 10-30%.
Sodium lignosulfonate and massfraction that wherein said sulfonated lignin preferred mass mark is 30-50% are the mixture of the calcium lignin sulphonate of 50-70%.
The preparation method of the present invention's enhanced cement grinding aid may further comprise the steps:
(1) water with 10-30wt% injects reaction kettle, is heated to 30-60 ℃ (preferred 35-50 ℃), adds the sodium laurylsulfate of 3-10wt%, stirs 5-25min (preferred 8-12min);
(2) sodium humate of adding 3-10 wt% stirs 3-8min (preferred 5min), adds the sulfonated lignin of 2-8wt% again, stirs 10-30min (preferred 12-18min);
(3) step (2) gained solution is cooled to room temperature, adds the Ucar 35 of 5-8 wt%, stir 5-25min (preferred 8-18min);
(4) add 5-20wt% trolamine, the di-alcohol monoisopropanolamine of 5-20 wt%, the di-isopropyl monoethanolamine of 20-50 wt%, stir 10-30min (preferred 15-25min), get the cement grinding aid product.
Said sulfonated lignin, sodium humate are that granularity is a 80-120 purpose dried powder.
Research shows, the enhanced cement grinding aid that the present invention is prepared is all having unusual effect aspect raising mill efficiency and the increase strength of cement.Adopt the present invention, made full use of trade waste and by product thereof, on the basis of usual component, added di-alcohol monoisopropanolamine novel surfactant, effectively improve the cement grinding mill unit-hour output, cut down the consumption of energy, improve cement performance.The cement that uses this grinding aid to produce is good to concrete admixture flexibility.During grinding, mix, improve mill efficiency and reach 2%-7%, can also improve cement early strength 1-3MPa, later strength 2-4MPa simultaneously according to the volume of the 0.01%-0.5% of grog and blended material total mass.
Embodiment
Below in conjunction with specific embodiment the present invention is done further explain.Should be noted that following explanation only is in order to explain the present invention, its content not to be limited.
Embodiment 1
The enhanced cement grinding aid A1 of present embodiment is processed by the raw material of following massfraction: trolamine 10%, di-alcohol monoisopropanolamine 8%; Di-isopropyl monoethanolamine 30%, Ucar 35 5%, sulfonated lignin 8%, sodium laurylsulfate 4%; Sodium humate 3%, water 32%.Wherein sulfonated lignin comprise the calcium lignin sulphonate of massfraction 35% sodium lignosulfonate and 65%.
The preparation method of the enhanced cement grinding aid of present embodiment may further comprise the steps:
(1) water is injected reaction kettle, be heated to 45 ℃, add sodium laurylsulfate, stir 10min;
(2) add sodium humate, stir 5min, add sulfonated lignin again, stir 15min;
(3) step (2) gained solution is cooled to room temperature, adds Ucar 35, stir 10min;
(4) add trolamine, di-alcohol monoisopropanolamine, di-isopropyl monoethanolamine, stir 20min, get the cement grinding aid product.
Embodiment 2
The enhanced cement grinding aid A2 of present embodiment is processed by the raw material of following massfraction: trolamine 8%, di-alcohol monoisopropanolamine 5%; Di-isopropyl monoethanolamine 43%, Ucar 35 4%, sulfonated lignin 3%, sodium laurylsulfate 4%; Sodium humate 3%, water 30%.
Wherein sulfonated lignin comprise massfraction 35% sodium lignosulfonate and 65% calcium lignin sulphonate.
Its preparation method is with embodiment 1.
Embodiment 3
The enhanced cement grinding aid A3 of present embodiment is processed by the raw material of following massfraction: trolamine 5%, di-alcohol monoisopropanolamine 20%; Di-isopropyl monoethanolamine 20%, Ucar 35 8%, sulfonated lignin 5%, sodium laurylsulfate 4%; Sodium humate 10%, water 28%.
Wherein sulfonated lignin comprise massfraction 35% sodium lignosulfonate and 65% calcium lignin sulphonate.
Its preparation method is with embodiment 1.
Embodiment 4
The enhanced cement grinding aid A4 of present embodiment is processed by the raw material of following massfraction: trolamine 20%, di-alcohol monoisopropanolamine 5%; Di-isopropyl monoethanolamine 21%, Ucar 35 8%, sulfonated lignin 8%, sodium laurylsulfate 3%; Sodium humate 7%, water 28%.
Wherein sulfonated lignin comprise the calcium lignin sulphonate of massfraction 35% sodium lignosulfonate and 65%.
Its preparation method is with embodiment 1.
Embodiment of the invention 1-4 is said to be liquid cement grinding additive, when manufacture of cement, is applied to ball mill, is applicable to ordinary Portland cement.General add-on is the 0.01-0.5% of cement quality.
The grinding-aid effect simultaneous test
A1-A4 is applied in the little mill of Φ 500mmx500mm standard test with embodiment of the invention 1-4 gained cement grinding aid, same cement proportion: peaceful cement mill grog 95%, natural dihydrate gypsum 5%; Grinding quality 3Kg; Grinding time 5min.The result shows employing A1-A4 grinding aid, 3 ~ 30 μ m, and < content of 80 μ m increases.Admixture embodiment of the invention 1-4 cement grinding aid is seen table 1 to the distribution situation that influences of cement granularity.
Table 1 admixture embodiment of the invention 1-4 cement grinding aid is to the distribution situation that influences of cement granularity
| Grinding aid | Volume/% | 1~3μm | 3~30μm | 30~80μm | >;80μm |
| Blank | 0 | 2.2 | 54.63 | 33.77 | 9.40 |
| A1 | 0.03 | 2.19 | 57.51 | 31.21 | 9.09 |
| A2 | 0.05 | 2.57 | 57.4 | 33.23 | 6.80 |
| A3 | 0.06 | 2.80 | 56.87 | 32.61 | 7.72 |
| A4 | 0.04 | 2.98 | 57.19 | 31.80 | 8.03 |
Add the influence of cement grinding aid to intensity
A1-A4 is applied in the little mill of Φ 500mmx500mm standard test with embodiment of the invention 1-4 gained cement grinding aid, cement proportion: certain cement mill grog 80%, slag 10%, Wingdale 5%, natural dihydrate gypsum 5%; Grinding quality 5Kg; Grinding time 20min; The test of GB/T 17671-1999 Test method for strength of hydraulic cement mortar.Adopt the permanent loading tester test of TYA-300B type microcomputer control 3 days, 28 days cement gel sand bending and compressive strength, test result is seen table 2, the result show adopt the A1-A4 grinding aid to cement early, the later strength reinforced effects is good.
Table 2 admixture embodiment 1-4 enhanced cement grinding aid is to the experimental result that influences of strength of cement
| Grinding aid | Volume (%) | 3 days folding strengths (MP) | 3 days ultimate compression strength (MP) | 28 days folding strengths (MP) | 28 days ultimate compression strength (MP) |
| Blank | 0 | 3.7 | 19.3 | 6.0 | 38.8 |
| A1 | 0.03 | 4.3 | 22.1 | 6.4 | 42.3 |
| A2 | 0.05 | 4.6 | 22.9 | 6.6 | 43.7 |
| A3 | 0.06 | 4.3 | 22.4 | 6.6 | 44.8 |
| A4 | 0.04 | 3.9 | 22.6 | 6.3 | 43.5 |
Claims (5)
1. an enhanced cement grinding aid is characterized in that, is processed by the raw material of following massfraction: trolamine 5-20%; Di-alcohol monoisopropanolamine 5-20%, di-isopropyl monoethanolamine 20-50%, Ucar 35 5-8%; Sulfonated lignin 2-8%; Sodium laurylsulfate 3-10%, sodium humate 3-10%, water 10-30%.
2. enhanced cement grinding aid according to claim 1 is characterized in that, wherein said sulfonated lignin are that massfraction is that sodium lignosulfonate and the massfraction of 30-50% is the mixture of the calcium lignin sulphonate of 50-70%.
3. enhanced cement grinding aid according to claim 1 and 2 is characterized in that, said sulfonated lignin, sodium humate are that granularity is a 80-120 purpose dried powder.
4. the preparation method of an enhanced cement grinding aid according to claim 1 or claim 2 is characterized in that, may further comprise the steps:
(1) water with 10-30wt% injects reaction kettle, is heated to 30-60 ℃, adds the sodium laurylsulfate of 3-10wt%, stirs 5-25min;
(2) sodium humate of adding 3-10 wt% stirred 3-8 minute, added the sulfonated lignin of 2-8wt% again, stirred 10-30min;
(3) step (2) gained solution is cooled to room temperature, adds the Ucar 35 of 5-8 wt %, stir 5-25min;
(4) add 5-20wt% trolamine, the di-alcohol monoisopropanolamine of 5-20 wt%, the di-isopropyl monoethanolamine of 20-50 wt%, stir 10-30min, get the cement grinding aid product.
5. the preparation method of enhanced cement grinding aid according to claim 4 is characterized in that, may further comprise the steps:
(1) water with 10-30wt% injects reaction kettle, is heated to 35-50 ℃, adds the sodium laurylsulfate of 3-10wt%, stirs 8-12min;
(2) sodium humate of adding 3-10 wt% stirs 5min, adds the sulfonated lignin of 2-8wt% again, stirs 12-18min;
(3) step (2) gained solution is cooled to room temperature, adds the Ucar 35 of 5-8 wt %, stir 8-18min;
(4) add 5-20wt% trolamine, the di-alcohol monoisopropanolamine of 5-20 wt%, the di-isopropyl monoethanolamine of 20-50 wt%, stir 15-25min, get the cement grinding aid product.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103641370A (en) * | 2013-10-12 | 2014-03-19 | 史才军 | Composite cement enhanced grinding aid containing amide polyamine polycarboxylic acids and preparation method therefor |
| CN104402295A (en) * | 2014-11-18 | 2015-03-11 | 桂林华越环保科技有限公司 | Reinforced cement grinding aid |
| CN104446112A (en) * | 2014-11-18 | 2015-03-25 | 桂林华越环保科技有限公司 | Polyether composite cement grinding aid |
| CN104446110A (en) * | 2014-11-18 | 2015-03-25 | 桂林华越环保科技有限公司 | Liquid cement grinding aid with low alcohol amine content |
| CN104446114A (en) * | 2014-11-18 | 2015-03-25 | 桂林华越环保科技有限公司 | Cement grinding aid |
| CN104446118A (en) * | 2014-11-18 | 2015-03-25 | 桂林华越环保科技有限公司 | Efficient chloride-free cement grinding aid |
| CN104496259A (en) * | 2014-11-18 | 2015-04-08 | 桂林华越环保科技有限公司 | Slow-setting grinding aid |
| CN104529229A (en) * | 2014-12-11 | 2015-04-22 | 山东宏艺科技股份有限公司 | Enhanced cement grinding aid |
| CN105693132A (en) * | 2016-01-28 | 2016-06-22 | 桂林华越环保科技有限公司 | Preparation method of special grinding aid for silver grey rock powder |
| CN106007448A (en) * | 2016-06-24 | 2016-10-12 | 桂林华越环保科技有限公司 | High-performance composite cement grinding aid |
| CN106082755A (en) * | 2016-06-24 | 2016-11-09 | 桂林华越环保科技有限公司 | A kind of enhanced cement grinding aid |
| CN108821631A (en) * | 2018-08-24 | 2018-11-16 | 浙江长盈建材科技有限公司 | A kind of sugar-free cement grinding aid and preparation method thereof |
| CN109467957A (en) * | 2018-12-05 | 2019-03-15 | 濮阳宏业高新科技发展有限公司 | A kind of novel environment friendly powder grinding aid, preparation method and application |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103641370A (en) * | 2013-10-12 | 2014-03-19 | 史才军 | Composite cement enhanced grinding aid containing amide polyamine polycarboxylic acids and preparation method therefor |
| CN103641370B (en) * | 2013-10-12 | 2015-06-10 | 史才军 | Composite cement enhanced grinding aid containing amide polyamine polycarboxylic acids and preparation method therefor |
| CN104446114A (en) * | 2014-11-18 | 2015-03-25 | 桂林华越环保科技有限公司 | Cement grinding aid |
| CN104446110A (en) * | 2014-11-18 | 2015-03-25 | 桂林华越环保科技有限公司 | Liquid cement grinding aid with low alcohol amine content |
| CN104446112A (en) * | 2014-11-18 | 2015-03-25 | 桂林华越环保科技有限公司 | Polyether composite cement grinding aid |
| CN104446118A (en) * | 2014-11-18 | 2015-03-25 | 桂林华越环保科技有限公司 | Efficient chloride-free cement grinding aid |
| CN104496259A (en) * | 2014-11-18 | 2015-04-08 | 桂林华越环保科技有限公司 | Slow-setting grinding aid |
| CN104402295A (en) * | 2014-11-18 | 2015-03-11 | 桂林华越环保科技有限公司 | Reinforced cement grinding aid |
| CN104529229A (en) * | 2014-12-11 | 2015-04-22 | 山东宏艺科技股份有限公司 | Enhanced cement grinding aid |
| CN104529229B (en) * | 2014-12-11 | 2016-06-29 | 山东宏艺科技股份有限公司 | A kind of enhanced cement grinding aid |
| CN105693132A (en) * | 2016-01-28 | 2016-06-22 | 桂林华越环保科技有限公司 | Preparation method of special grinding aid for silver grey rock powder |
| CN106007448A (en) * | 2016-06-24 | 2016-10-12 | 桂林华越环保科技有限公司 | High-performance composite cement grinding aid |
| CN106082755A (en) * | 2016-06-24 | 2016-11-09 | 桂林华越环保科技有限公司 | A kind of enhanced cement grinding aid |
| CN106007448B (en) * | 2016-06-24 | 2018-03-09 | 桂林华越环保科技有限公司 | A kind of high-performance composite cement grinding aid |
| CN106082755B (en) * | 2016-06-24 | 2018-05-25 | 桂林华越环保科技有限公司 | A kind of enhanced cement grinding aid |
| CN108821631A (en) * | 2018-08-24 | 2018-11-16 | 浙江长盈建材科技有限公司 | A kind of sugar-free cement grinding aid and preparation method thereof |
| CN109467957A (en) * | 2018-12-05 | 2019-03-15 | 濮阳宏业高新科技发展有限公司 | A kind of novel environment friendly powder grinding aid, preparation method and application |
| CN109467957B (en) * | 2018-12-05 | 2020-07-24 | 濮阳宏业高新科技发展有限公司 | Powder grinding aid, preparation method and application thereof |
| CN110327841A (en) * | 2019-07-04 | 2019-10-15 | 湖南格林朗科技有限公司 | A kind of novel generation hydroxyl alcamines surfactant and its preparation method and application |
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Application publication date: 20121010 Assignee: Hunan Xijiesi Building Materials Technology Co. Ltd. Assignor: Shi Caijun Contract record no.: 2013430000182 Denomination of invention: Reinforced type cement grinding aid and preparation method thereof Granted publication date: 20131120 License type: Exclusive License Record date: 20131224 |
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