CN103265223A - Cement grinding aid - Google Patents
Cement grinding aid Download PDFInfo
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- CN103265223A CN103265223A CN2013102192177A CN201310219217A CN103265223A CN 103265223 A CN103265223 A CN 103265223A CN 2013102192177 A CN2013102192177 A CN 2013102192177A CN 201310219217 A CN201310219217 A CN 201310219217A CN 103265223 A CN103265223 A CN 103265223A
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- grinding aid
- cement
- high molecular
- molecular polymer
- cement grinding
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Abstract
The invention discloses a liquid cement grinding aid. The cement grinding aid is prepared by dissolving components in water. The cement grinding aid comprises the following components by mass percent: 50-60% of macromolecular polymer, 1-5% of sulfanilic acid, 5-10% of propylene glycol, 1-5% of ammonium nitrate and the balance of water. The macromolecular polymer is formed by taking acetone as a solvent, carrying out free radical polymerization on a polymerization monomer, an initiator and a chain transfer agent and then carrying out reduced pressure distillation. The cement grinding aid has an obvious grinding assisting effect, yield of a mill is effectively increased, specific surface area of cement is increased, grain composition of the cement can also be improved, and cement strength can be improved.
Description
Technical field
The present invention relates to field of cement production, be specifically related to a kind of cement grinding aid.
Background technology
Cement grinding is a high energy consumption, inefficient process, and wherein the energy more than 75% is wasted, so energy-saving and emission-reduction, the development low-carbon economy is the problem that cement industry urgently will solve.For cutting down the consumption of energy, improve mill efficiency, people take the measure of following two aspects usually: one, improve milling equipment and grinding process to utilize mechanical energy to greatest extent; Two, in cement pulverizing course, add water cement grinding aids and improve mill efficiency.Second kind of research emphasis that measure is current field of cement production wherein.The America and Europe, developed countries such as Japan, the use of grinding aid is quite general, and we also are in the infancy.Trace it to its cause, mostly by organic alcohol amine, compositions such as inorganic salt constitute in the prescription of China's grinding aid, even the producer that has a large amount of industrial by-products that use in producing the grinding aid process.These grinding aids display gradually in the deficiency of use, bring very big potential safety hazard for cement and concrete weather resistance as villaumite; Grinding aid quality instability, volume is big, thereby causes cement quality fluctuation etc.
In recent years, along with the progress of science and technology, develop the research focus that the grinding aid starting material become this field by synthetic means, this will fundamentally solve the drawback that traditional grinding aid exists.
Summary of the invention
It is the cement grinding aid of main component with the synthesising macromolecule copolymer that the object of the invention is to provide a kind of, to solve existing grinding aid quality instability, the problem that volume is big.
The present invention is by the following technical solutions:
A kind of cement grinding aid comprises following component, by percentage to the quality:
High molecular polymer 50～60%,
Sulphanilic Acid 1～5%,
Propylene glycol 5～10%,
Ammonium nitrate 1～5%,
Water 20～43%;
Wherein, described high molecular polymer comprises following component, by percentage to the quality:
Polymerization single polymerization monomer: 26～30%, formed by mass ratio 0.8～1.2:8～12:2～4 by vinylbenzene, allyl polyether, ethyl propenoate:,
Diisopropyl azodicarboxylate as initiator: 0.3～1.0%,
Positive Dodecyl Mercaptan as chain-transfer agent: 0.2～0.8%,
Acetone: 69～73%;
Described high molecular polymer preparation method is as follows: get acetone in four-hole boiling flask, add initiator, chain-transfer agent respectively, start stirring, be warming up to 55～65 ℃ of backflows, add polymerization single polymerization monomer after 3～8 minutes; The control temperature was reacted 3～5 hours at 55～65 ℃, and after reacting completely, the control temperature is removed acetone at 55～65 ℃ by underpressure distillation, obtains high molecular polymer.
2, cement grinding aid according to claim 1 is characterized in that, the structural formula of described allyl polyether is:
CH
2=CHCH
2O(CH
2CH
2O)
nH
Wherein, n is 20～30 natural number.
Beneficial effect of the present invention:
1, the present invention has developed a kind of novel aqueous macromolecular material as the main moiety of cement grinding aid, through evidence, use contains the cement grinding aid of aqueous high molecular among the present invention, unit-hour output can improve about 20%, the specific surface area of cement significantly improves simultaneously, and the cement granules grating improves.
2: the cement grinding aid of the present invention's exploitation, through the effect that evidence has excited cement intensity, 28 days intensity of cement can improve about 8%.
3, incorporation is low, only is the 0.02-0.03% of cement consumption.
Embodiment
Do further explanation below in conjunction with the present invention of embodiment.The following example only is used for explanation the present invention, but is not used for limiting practical range of the present invention.
Embodiment 1
A kind of cement grinding aid comprises following component, by mass percentage:
High molecular polymer: 56%
Sulphanilic Acid: 4%
Propylene glycol: 6%
Ammonium nitrate: 2%
Water: 32%
The preparation process of this cement grinding aid is as follows:
Under whipped state, in water, add phenalgin sulfonic acid, propylene glycol, ammonium nitrate successively, to adding high molecular polymer after the dissolving fully, be stirred to dissolving fully.
The preparation method of high molecular polymer is as follows, by percentage to the quality:
Get 71.2% acetone in four-hole boiling flask, add 0.5% Diisopropyl azodicarboxylate, 0.3% positive Dodecyl Mercaptan then respectively, start stirring, be warming up to 60 ℃ of backflows, add 2% vinylbenzene, 20% allyl ethers (n=25), 6% ethyl propenoate monomer after 5 minutes; The control temperature was reacted 3.5 hours at 60 ± 1 ℃.After reacting completely, the control temperature is removed acetone at 60 ± 1 ℃ by underpressure distillation, obtains high molecular polymer.
Embodiment 2
A kind of cement grinding aid comprises following component, by mass percentage:
High molecular polymer: 50%
Sulphanilic Acid: 3%
Propylene glycol: 10%
Ammonium nitrate: 4%
Water: 33%
The preparation process of this cement grinding aid is as follows:
Under whipped state, in water, add phenalgin sulfonic acid, propylene glycol, ammonium nitrate successively, to adding high molecular polymer after the dissolving fully, be stirred to dissolving fully.
The preparation method of high molecular polymer is as follows, by percentage to the quality:
Get 69.1% acetone in four-hole boiling flask, add 0.6% Diisopropyl azodicarboxylate, 0.3% positive Dodecyl Mercaptan then respectively, start stirring, be warming up to 58 ℃ of backflows, add 2% vinylbenzene, 22% allyl ethers (n=28), 6% ethyl propenoate monomer after 5 minutes; The control temperature was reacted 4 hours at 59 ± 1 ℃.After reacting completely, the control temperature is removed acetone at 59 ± 1 ℃ by underpressure distillation, obtains high molecular polymer.
Embodiment 3
A kind of cement grinding aid comprises following component, by mass percentage:
High molecular polymer: 60%
Sulphanilic Acid: 5%
Propylene glycol: 5%
Ammonium nitrate: 1%
Water: 29%
The preparation process of this cement grinding aid is as follows:
Under whipped state, in water, add phenalgin sulfonic acid, propylene glycol, ammonium nitrate successively, to adding high molecular polymer after the dissolving fully, be stirred to dissolving fully.
The preparation method of high molecular polymer is as follows, by percentage to the quality:
Get 69% acetone in four-hole boiling flask, add 0.8% Diisopropyl azodicarboxylate, 0.2% positive Dodecyl Mercaptan then respectively, start stirring, be warming up to 58 ℃ of backflows, add 2.2% vinylbenzene, 23.8% allyl ethers (n=28), 4% ethyl propenoate monomer after 5 minutes; The control temperature was reacted 5 hours at 58 ± 1 ℃.After reacting completely, the control temperature is removed acetone at 58 ± 1 ℃ by underpressure distillation, obtains high molecular polymer.
Embodiment 4
A kind of cement grinding aid comprises following component, by mass percentage:
High molecular polymer: 55%
Sulphanilic Acid: 1%
Propylene glycol: 5%
Ammonium nitrate: 5%
Water: 34%
The preparation process of this cement grinding aid is as follows:
Under whipped state, in water, add Sulphanilic Acid, propylene glycol, ammonium nitrate successively, to adding high molecular polymer after the dissolving fully, be stirred to dissolving fully.
The preparation method of high molecular polymer is as follows, by percentage to the quality:
Get 71.68% acetone in four-hole boiling flask, add 0.3% Diisopropyl azodicarboxylate, 0.5% positive Dodecyl Mercaptan then respectively, start stirring, be warming up to 55 ℃ of backflows, add 1.92% vinylbenzene, 19.2% allyl ethers (n=20), 6.4% ethyl propenoate monomer after 8 minutes; The control temperature was reacted 5 hours at 56 ± 1 ℃.After reacting completely, the control temperature is removed acetone at 56 ± 1 ℃ by underpressure distillation, obtains high molecular polymer.
Embodiment 5
A kind of cement grinding aid comprises following component, by mass percentage:
High molecular polymer: 55%
Sulphanilic Acid: 3%
Propylene glycol: 8%
Ammonium nitrate: 3%
Water: 31%
The preparation process of this cement grinding aid is as follows:
Under whipped state, in water, add Sulphanilic Acid, propylene glycol, ammonium nitrate successively, to adding high molecular polymer after the dissolving fully, be stirred to dissolving fully.
The preparation method of high molecular polymer is as follows, by percentage to the quality:
Get 71.2% acetone in four-hole boiling flask, add 1% Diisopropyl azodicarboxylate, 0.8% positive Dodecyl Mercaptan then respectively, start stirring, be warming up to 65 ℃ of backflows, add 2% vinylbenzene, 20% allyl ethers (n=30), 5% ethyl propenoate monomer after 3 minutes; The control temperature was reacted 3 hours at 64 ± 1 ℃.After reacting completely, the control temperature is removed acetone at 64 ± 1 ℃ by underpressure distillation, obtains high molecular polymer.
The grinding-aid effect simultaneous test
(model: GA-100) mix in the cement pulverizing course, each grinding aid is tested, used cement material proportioning sees Table 1, and test result sees Table 2 for the grinding aid that employing embodiment 1-3 prepares and commercially available grinding aid.
Table 1 cement material proportioning
| Title | Grog | Dihydrate gypsum | Flyash (II level) | Stone |
| Ratio (weight ratio %) | 75 | 5 | 15 | 5 |
Table 2 grinding aid test result
Claims (2)
1. a cement grinding aid is characterized in that, comprises following component, by percentage to the quality:
High molecular polymer 50～60%,
Sulphanilic Acid 1～5%,
Propylene glycol 5～10%,
Ammonium nitrate 1～5%,
Water 20～43%;
Wherein, described high molecular polymer comprises following component, by percentage to the quality:
Polymerization single polymerization monomer: 26～30%, formed by mass ratio 0.8～1.2:8～12:2～4 by vinylbenzene, allyl polyether, ethyl propenoate,
Diisopropyl azodicarboxylate as initiator: 0.3～1.0%,
Positive Dodecyl Mercaptan as chain-transfer agent: 0.2～0.8%,
Acetone: 69～73%;
Described high molecular polymer preparation method is as follows: get acetone in four-hole boiling flask, add initiator, chain-transfer agent respectively, start stirring, be warming up to 55～65 ℃ of backflows, add polymerization single polymerization monomer after 3～8 minutes; The control temperature was reacted 3～5 hours at 55～65 ℃, and after reacting completely, the control temperature is removed acetone at 55～65 ℃ by underpressure distillation, obtains described high molecular polymer.
2. cement grinding aid according to claim 1 is characterized in that, the structural formula of described allyl polyether is:
CH
2=CHCH
2O(CH
2CH
2O)
nH
Wherein, n is 20～30 natural number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310219217.7A CN103265223B (en) | 2013-06-03 | 2013-06-03 | Cement grinding aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310219217.7A CN103265223B (en) | 2013-06-03 | 2013-06-03 | Cement grinding aid |
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| CN103265223A true CN103265223A (en) | 2013-08-28 |
| CN103265223B CN103265223B (en) | 2014-07-23 |
Family
ID=49008902
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|---|---|---|---|
| CN201310219217.7A Expired - Fee Related CN103265223B (en) | 2013-06-03 | 2013-06-03 | Cement grinding aid |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104860573A (en) * | 2015-05-27 | 2015-08-26 | 湖州华仑助剂科技有限公司 | Liquid cement grinding aid |
| CN104891845A (en) * | 2015-05-27 | 2015-09-09 | 湖州华仑助剂科技有限公司 | Cement grinding aid |
| CN104909603A (en) * | 2015-05-19 | 2015-09-16 | 东南大学 | Cement grinding aid for masonry cement |
| CN108940553A (en) * | 2018-07-19 | 2018-12-07 | 佛山陵朝新材料有限公司 | A kind of ore crushing grinding aid special |
| CN109354433A (en) * | 2018-11-14 | 2019-02-19 | 遵义古匡坝建材有限责任公司 | A kind of liquid cement grinding additive and its manufacturing method |
| CN114956649A (en) * | 2022-07-01 | 2022-08-30 | 吉林省希普水泥助磨剂有限公司 | Cement grinding aid and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102643047A (en) * | 2012-04-19 | 2012-08-22 | 史才军 | Amide polyamine polycarboxylic acid high-polymer cement grinding aid and preparation method thereof |
-
2013
- 2013-06-03 CN CN201310219217.7A patent/CN103265223B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102643047A (en) * | 2012-04-19 | 2012-08-22 | 史才军 | Amide polyamine polycarboxylic acid high-polymer cement grinding aid and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104909603A (en) * | 2015-05-19 | 2015-09-16 | 东南大学 | Cement grinding aid for masonry cement |
| CN104860573A (en) * | 2015-05-27 | 2015-08-26 | 湖州华仑助剂科技有限公司 | Liquid cement grinding aid |
| CN104891845A (en) * | 2015-05-27 | 2015-09-09 | 湖州华仑助剂科技有限公司 | Cement grinding aid |
| CN108940553A (en) * | 2018-07-19 | 2018-12-07 | 佛山陵朝新材料有限公司 | A kind of ore crushing grinding aid special |
| CN109354433A (en) * | 2018-11-14 | 2019-02-19 | 遵义古匡坝建材有限责任公司 | A kind of liquid cement grinding additive and its manufacturing method |
| CN114956649A (en) * | 2022-07-01 | 2022-08-30 | 吉林省希普水泥助磨剂有限公司 | Cement grinding aid and preparation method thereof |
| CN114956649B (en) * | 2022-07-01 | 2023-02-10 | 吉林省希普水泥助磨剂有限公司 | Cement grinding aid and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN103265223B (en) | 2014-07-23 |
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Granted publication date: 20140723 Termination date: 20170603 |