CN101708972B - Liquid composite cement grinding aid and preparation method thereof - Google Patents
Liquid composite cement grinding aid and preparation method thereof Download PDFInfo
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- CN101708972B CN101708972B CN2009101752207A CN200910175220A CN101708972B CN 101708972 B CN101708972 B CN 101708972B CN 2009101752207 A CN2009101752207 A CN 2009101752207A CN 200910175220 A CN200910175220 A CN 200910175220A CN 101708972 B CN101708972 B CN 101708972B
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- cement
- parts
- grinding aid
- sodium
- kilograms
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Classifications
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/52—Grinding aids; Additives added during grinding
Abstract
The invention relates to a cement additive, in particular to liquid composite cement grinding aid and a preparation method thereof, which solve the problems of bottleneck effect occurring in reactions among various components in cement caused by conventional cement grinding aid, poor effect in improving performance of each aspect of the cement and the like. The grinding aid is prepared from coconut oil diethan olamide, water, acetic acid, melamine, sodium nitrite, sodium acetate, sodium thiosulfate, molasses, sodium hexametaphosphate, calcium lignosulfonate and soap, can provide an intermediate platform for reactions among the components in the cement to ensure that the components in the cement can generate compound synergy and additive effects with one another, and more effectively excites potential activity of raw material components, thereby receiving sufficient reactions to play respective grinding aid effect in a powder grinding process, effectively eliminating ball stick and over grinding phenomena, improving the specific surface area of the cement, and simultaneously improving the machine-hour output of a cement mill; and the product which is added with 0.1 weight percent of cement can improve the 3-day strength of the cement by 4 to 7MPa, and improve the 28-day strength of the cement by 3 to 6MPa.
Description
Technical field
The present invention relates to a kind of cement additive, be specially a kind of liquid composite cement grinding aid and preparation method thereof.
Background technology
Population expansion, shortage of resources and environmental degradation are the three big problems that mankind nowadays society faces, and the road of walking Sustainable development has become the strategic objective of global common recognition and future development.China is a manufacture of cement big country, and its manufacture of cement amount occupies first place, the world always, but our most of cement production enterprises still adopt shaft kiln and wet-process rotary kiln calcination of cement clinker for a long time; Its energy consumption of the cement that this method is produced is high, and dust is big, and the grog volume is big; Limestone resource consumption is big, and the waste residue utilization rate is low, and the cement quality of being produced is not high yet; This technology is not suitable for the requirement of current national energy-conserving and environment-protective policy fully, will move towards backward and trend that be eliminated.Simultaneously, along with the fast development of China's basis industry and mining, the industry and mining solid emission increases year by year, and because its utilization ratio is low mostly to store up disposal, has brought the serious environmental pollution on every side for the stockyard.Therefore, seek a kind of grog addition content that can reduce greatly in the cement, thereby reduce the consumption and the CO of the energy
2Discharging, the cement technology that can greatly utilize simultaneously industrial residue more and more is the demand of current cement development.
Cement grinding aid can reduce the manufacture of cement cost, improves manufacture of cement efficient, increases cement output; Improve cement performance and quality etc., be widely used in countries in the world, China is world manufacture of cement big country; The research and development of cement grinding aid is very fast; Utilize cement additire technology such as cement grinding aid to improve strength of cement, improve cement output, reduce grog addition content in the cement; The intensity of excited cement blended material improves in the cement blended material addition content etc., thisly utilizes cement additire to reach cement to practice thrift grog, cut down the consumption of energy, utilize the cement technology of waste residue of common occurrence.But there is function singleness in the existing grinding aid of being produced, costs an arm and a leg, problems such as universality difference.In recent years; The research and development of polygamy side, many performances, efficient composite grinding aids become this hot research fields; The cement grinding aid that is composited by multiple organic and inorganic material is combined together plurality of active ingredients; Performance grinding-aid effect separately in grinding process; But these cement grinding aids are mostly main to be relied on and cement is played acting on of chemi-excitation improves strength of cement to a certain extent, thereby reaches the purpose that reduces cement clinker, improves blended material, and (having referred in the chemistry of cement reaction to have accelerated owing to the effect of chemi-excitation the rapid reaction of cement after when beginning here causes chemistry to be assembled and obstruction often to be easy to cause reaction between each mineral constituent of cement ink-bottle effect to occur; Causing the later stage fully to react makes strength of cement the retraction phenomenon occur); Make cement early strength increase fast and the later stage gain in strength is slow even the phenomenon of retraction, effect is relatively poor improving aspect cement various aspects of performance and the quality, and simultaneously present national cement standard stipulates that the chloride ion content in the cement can not be greater than 0.06%; And the volume of grinding aid must be less than 0.5% of cement weight, and tradition is that main powder enhanced type grinding aids will be stopped using with sodium-chlor.Develop in a word that high performance-price ratio, reinforced effects are good, the composite grinding aids of grinding aid excellent property, environmental sound has great market application foreground.
Summary of the invention
The present invention makes cement early strength increase fast in order to solve existing cement grinding aid and to be prone to cause reaction between each mineral constituent of cement ink-bottle effect to occur and the later stage gain in strength is slow and improving aspect cement various aspects of performance and the quality problems such as effect is relatively poor, and a kind of liquid composite cement grinding aid and preparation method thereof is provided.
The present invention adopts following technical scheme to realize: a kind of liquid composite cement grinding aid, form by the raw material of following parts by weight: 200～600 parts of lauric acid amide of ethanol, 300～600 parts in water; 100～300 parts of acetic acid, 50～150 parts of trimeric cyanamides, 10～15 parts of Sodium Nitrites; 20～30 parts of sodium-acetates, 20～50 parts in Sulfothiorine, 20～60 parts in molasses; 20～30 parts of Sodium hexametaphosphate 99s, 10～30 parts of wooden calcium sulfonates, 4～5 parts in soap.Above-mentioned raw materials all can be buied from market.
Prepare the method for aforesaid liquid composite cement grinding aid, may further comprise the steps:
(1) elder generation incorporates Sodium Nitrite, sodium-acetate, Sulfothiorine, Sodium hexametaphosphate 99, wooden calcium sulfonate in proportion and is mixed with A solution in the water; (2) lauric acid amide of ethanol, acetic acid, trimeric cyanamide, molasses are added in the retort in proportion stir then; Temperature is controlled at 40～60 ℃; Constant temperature stirred 25～40 minutes; In the process that stirs, soap cut into pieces simultaneously add water and heating and dissolve after, add together to stir in the retort and be mixed with B solution; (3) at last with stirring after above-mentioned A solution and the mixing of B solution, promptly obtain cement grinding aid of the present invention.In the said process, the amount of water when soap dissolves is that those of ordinary skill in the art is easy to control, and is about to a certain amount of soap and just in time dissolves and get final product.
The present invention is through a large amount of tests and summary of experience; Preferred above-mentionedly comprise the plurality of raw materials of inorganic materials and organic materials and adopt specific preparation method to make liquid composite cement grinding aid of the present invention, this grinding aid adds in the cement, and a kind of effect of intermediate platform can be provided to the reaction between each mineral constituent of cement; Make and produce compound collaborative, synergetic effect in the cement between each composition each other; More effectively excite the lateral reactivity of each feed composition, thereby reacted fully, performance grinding-aid effect separately in grinding process; Eliminated a kind of ink-bottle effect in the chemistry of cement reaction to a great extent; This cement grinding aid thereby can increase cement intensity greatly improves cement output, reduces cement fineness.
In order further to prove the result of use of grinding aid according to the invention, the applicant has also carried out following contrast experiment:
Experiment one: under the identical situation of cement quality, will be as follows by the contrast situation tabulation of Beijing China material cement Ltd, the fertile forever similar cement grinding aid product in Nanjing and the cement products of not mixing grinding aid and the cement products that mixes grinding aid according to the invention:
| Cement products | Volume | Blended material | Fineness | 3 days | 28 days | The grinding machine platform produces | Cl ions |
| Blank | / | 30％ | 3.3 | 13.9 | 37.2 | 18T/H | 0.039％ |
| Beijing China material | 0.1％ | 38％ | 2.6 | 12.8 | 36.5 | 18.5T/H | 0.051％ |
| Forever can in Nanjing | 0.1％ | 38％ | 2.2 | 12.6 | 35.9 | 19T/H | 0.047％ |
| This grinding aid | 0.1％ | 45％ | 1.5 | 13.1 | 36.8 | 20T/H | 0.042％ |
From table, can find out, mix the cement products of grinding aid of the present invention, compare with similar cement grinding aid product in the market; Its ultimate compression strength and grinding-aid effect are all very obvious; And can under the situation that guarantees the cement equal in quality, increase the blending amount of mixture material more than 15%, and reduced the grog consumption, reduced cost; Chloride ion content is lower in addition, meets the standard of country for cement grinding aid.
Experiment two: the application of grinding aid according to the invention in cement:
1, produce the preparation of PO42.5 cement industry by present cement mill, grog mixes 86%, and slag is 5%, and slag is 2%, flyash 3%, and gypsum is 4%, cement specific surface area is controlled at 360m
2About/Kg, A during fineness＜2.0%, its cement physical properties see the following form and numbers;
2, by producing the preparation of PO42.5 cement industry, the grog addition content is 64%, and slag is 20%; Slag is 5%, and flyash is 6%, and gypsum is 5%; Simultaneously suitably take comprehensive grinding process, the grog with above 64%, 5% gypsum; 0.1% grinding aid of the present invention grinding in same mill, specific surface area is controlled at 380m
2About/Kg, the slag with above 20%, 5% slag, 6% flyash is grinding in another mill, and specific surface area is controlled at 400～450m
2About/Kg, stir with High-efficient Stirrer by above comprehensive proportioning at last, finally obtain needed finished cement, comprehensive fineness＜1%, its performance middle B that sees the following form,
Can find out from test-results; When the mineral composition of cement, grain composition, fineness etc. are tending towards under certain reasonably situation; Admixture 0.1% grinding aid according to the invention can further make and produce compound collaborative, synergetic effect in the cement between each composition each other, can guarantee to reduce the grog more than 20% under the basic identical situation of cement quality.
In sum, grinding aid of the present invention provides an intermediate platform can for the reaction between each mineral constituent of cement, makes and produces compound collaborative, synergetic effect in the cement between each composition each other; More effectively excite the lateral reactivity of each feed composition, thereby reacted fully, performance grinding-aid effect separately in grinding process; Can not only effectively eliminate and stick with paste ball and cross the grinding phenomenon, improve cement specific surface area, and increased substantially the addition content of blended material in the cement; Its blending amount of mixture material even can bring up to about 20～30%; Greatly reduce production cost, under the situation that does not reduce the grog consumption, mix the product of the present invention that is equivalent to 0.1% cement weight simultaneously; Can improve 3 days intensity 4～7MPa of cement, improve 28 days intensity 3～6MPa of cement; Each item performance and the quality aspect of cement are greatly improved, improve the unit-hour output of cement mill simultaneously.
Embodiment
Embodiment 1: 1 kilogram every part
A kind of liquid composite cement grinding aid is made up of the raw material of following parts by weight: 200 kilograms of lauric acid amide of ethanol, 300 kilograms in water; 100 kilograms of acetic acid, 50 kilograms of trimeric cyanamides, 10 kilograms of Sodium Nitrites; 20 kilograms of sodium-acetates, 20 kilograms in Sulfothiorine, 20 kilograms in molasses; 20 kilograms of Sodium hexametaphosphate 99s; 10 kilograms of wooden calcium sulfonates, 4 kilograms in soap, the preparation method may further comprise the steps: (1) incorporates Sodium Nitrite, sodium-acetate, Sulfothiorine, Sodium hexametaphosphate 99, wooden calcium sulfonate in proportion earlier and is mixed with A solution in the water; (2) lauric acid amide of ethanol, acetic acid, trimeric cyanamide, molasses are added in the retort in proportion stir then; Temperature is controlled at 40 ℃; Constant temperature stirred 25 minutes; In the process that stirs, soap cut into pieces simultaneously add water and heating and dissolve after, add together to stir in the retort and be mixed with B solution; (3) at last with stirring after above-mentioned A solution and the mixing of B solution, promptly obtain cement grinding aid of the present invention.
Embodiment 2: 1 kilogram every part
A kind of liquid composite cement grinding aid is made up of the raw material of following parts by weight: 600 kilograms of lauric acid amide of ethanol, 600 kilograms in water; 300 kilograms of acetic acid, 150 kilograms of trimeric cyanamides, 15 kilograms of Sodium Nitrites; 30 kilograms of sodium-acetates, 50 kilograms in Sulfothiorine, 60 kilograms in molasses; 30 kilograms of Sodium hexametaphosphate 99s; 30 kilograms of wooden calcium sulfonates, 5 kilograms in soap, the preparation method may further comprise the steps: (1) incorporates Sodium Nitrite, sodium-acetate, Sulfothiorine, Sodium hexametaphosphate 99, wooden calcium sulfonate in proportion earlier and is mixed with A solution in the water; (2) lauric acid amide of ethanol, acetic acid, trimeric cyanamide, molasses are added in the retort in proportion stir then; Temperature is controlled at 60 ℃; Constant temperature stirred 40 minutes; In the process that stirs, soap cut into pieces simultaneously add water and heating and dissolve after, add together to stir in the retort and be mixed with B solution; (3) at last with stirring after above-mentioned A solution and the mixing of B solution, promptly obtain cement grinding aid of the present invention.
Embodiment 3: 1 kilogram every part
A kind of liquid composite cement grinding aid is made up of the raw material of following weight kilogram number: 200 kilograms of lauric acid amide of ethanol, 600 kilograms in water; 100 kilograms of acetic acid, 50 kilograms of trimeric cyanamides, 15 kilograms of Sodium Nitrites; 20 kilograms of sodium-acetates, 45 kilograms in Sulfothiorine, 30 kilograms in molasses; 30 kilograms of Sodium hexametaphosphate 99s; 10 kilograms of wooden calcium sulfonates, 4 kilograms in soap, the preparation method may further comprise the steps: (1) incorporates Sodium Nitrite, sodium-acetate, Sulfothiorine, Sodium hexametaphosphate 99, wooden calcium sulfonate in proportion earlier and is mixed with A solution in the water; (2) lauric acid amide of ethanol, acetic acid, trimeric cyanamide, molasses are added in the retort in proportion stir then; Temperature is controlled at 40 ℃; Constant temperature stirred 30 minutes; In the process that stirs, soap cut into pieces simultaneously add water and heating and dissolve after, add together to stir in the retort and be mixed with B solution; (3) at last with stirring after above-mentioned A solution and the mixing of B solution, promptly obtain cement grinding aid of the present invention.
Embodiment 4: 1 kilogram every part
A kind of liquid composite cement grinding aid is made up of the raw material of following weight kilogram number: 400 kilograms of lauric acid amide of ethanol, 500 kilograms in water; 150 kilograms of acetic acid, 100 kilograms of trimeric cyanamides, 12 kilograms of Sodium Nitrites; 25 kilograms of sodium-acetates, 35 kilograms in Sulfothiorine, 45 kilograms in molasses; 25 kilograms of Sodium hexametaphosphate 99s; 20 kilograms of wooden calcium sulfonates, 5 kilograms in soap, the preparation method may further comprise the steps: (1) incorporates Sodium Nitrite, sodium-acetate, Sulfothiorine, Sodium hexametaphosphate 99, wooden calcium sulfonate in proportion earlier and is mixed with A solution in the water; (2) lauric acid amide of ethanol, acetic acid, trimeric cyanamide, molasses are added in the retort in proportion stir then; Temperature is controlled at 55 ℃; Constant temperature stirred 35 minutes; In the process that stirs, soap cut into pieces simultaneously add water and heating and dissolve after, add together to stir in the retort and be mixed with B solution; (3) at last with stirring after above-mentioned A solution and the mixing of B solution, promptly obtain cement grinding aid of the present invention.
Embodiment 5: 1 kilogram every part
A kind of liquid composite cement grinding aid is made up of the raw material of following weight kilogram number: 500 kilograms of lauric acid amide of ethanol, 400 kilograms in water; 250 kilograms of acetic acid, 125 kilograms of trimeric cyanamides, 13 kilograms of Sodium Nitrites; 22 kilograms of sodium-acetates, 40 kilograms in Sulfothiorine, 30 kilograms in molasses; 27 kilograms of Sodium hexametaphosphate 99s; 15 kilograms of wooden calcium sulfonates, 5 kilograms in soap, the preparation method may further comprise the steps: (1) incorporates Sodium Nitrite, sodium-acetate, Sulfothiorine, Sodium hexametaphosphate 99, wooden calcium sulfonate in proportion earlier and is mixed with A solution in the water; (2) lauric acid amide of ethanol, acetic acid, trimeric cyanamide, molasses are added in the retort in proportion stir then; Temperature is controlled at 46 ℃; Constant temperature stirred 30 minutes; In the process that stirs, soap cut into pieces simultaneously add water and heating and dissolve after, add together to stir in the retort and be mixed with B solution; (3) at last with stirring after above-mentioned A solution and the mixing of B solution, promptly obtain cement grinding aid of the present invention.
Claims (2)
1. liquid composite cement grinding aid is characterized in that being made up of the raw material of following parts by weight:
200～600 parts of lauric acid amide of ethanol, 300～600 parts in water, 100～300 parts of acetic acid; 50～150 parts of trimeric cyanamides, 10～15 parts of Sodium Nitrites, 20～30 parts of sodium-acetates; 20～50 parts in Sulfothiorine, 20～60 parts in molasses, 20～30 parts of Sodium hexametaphosphate 99s; 10～30 parts of wooden calcium sulfonates, 4～5 parts in soap.
2. the method for preparing a kind of liquid composite cement grinding aid as claimed in claim 1 is characterized in that may further comprise the steps:
(1) elder generation incorporates Sodium Nitrite, sodium-acetate, Sulfothiorine, Sodium hexametaphosphate 99, wooden calcium sulfonate in proportion and is mixed with A solution in the water;
(2) lauric acid amide of ethanol, acetic acid, trimeric cyanamide, molasses are added in the retort in proportion stir then; Temperature is controlled at 40～60 ℃; Constant temperature stirred 25～40 minutes; In the process that stirs, soap cut into pieces simultaneously add water and heating and dissolve after, add together to stir in the retort and be mixed with B solution;
(3) at last with stirring after above-mentioned A solution and the mixing of B solution, promptly obtain described cement grinding aid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101752207A CN101708972B (en) | 2009-11-19 | 2009-11-19 | Liquid composite cement grinding aid and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101752207A CN101708972B (en) | 2009-11-19 | 2009-11-19 | Liquid composite cement grinding aid and preparation method thereof |
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| Publication Number | Publication Date |
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| CN101708972A CN101708972A (en) | 2010-05-19 |
| CN101708972B true CN101708972B (en) | 2012-01-11 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102329095B (en) * | 2011-06-08 | 2015-12-09 | 山东众森科技股份有限公司 | A kind of grinding aid special for cement vertical mill and preparation method thereof |
| CN103938478A (en) * | 2014-04-16 | 2014-07-23 | 芜湖富祺科技有限公司 | Cement grinding aid and method for fabricating cement grinding aid by using papermaking waste liquor |
| CN111875287A (en) * | 2020-08-13 | 2020-11-03 | 衡阳市九州建材有限公司 | Preparation method of composite cement grinding aid |
| CN115403287B (en) * | 2022-08-26 | 2023-07-04 | 安徽海螺制剂工程技术有限公司 | Raw material mineralizer doped with 2-acrylamido-2-methylpropanesulfonic acid and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4871395A (en) * | 1987-09-17 | 1989-10-03 | Associated Universities, Inc. | High temperature lightweight foamed cements |
| CN101318791A (en) * | 2008-06-03 | 2008-12-10 | 南京永能建材技术有限公司 | Liquid cement grinding aid and preparation method thereof |
| CN101428985A (en) * | 2008-11-05 | 2009-05-13 | 北京中大新材能源有限公司 | Composite grinding aid, production method and uses thereof |
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2009
- 2009-11-19 CN CN2009101752207A patent/CN101708972B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4871395A (en) * | 1987-09-17 | 1989-10-03 | Associated Universities, Inc. | High temperature lightweight foamed cements |
| CN101318791A (en) * | 2008-06-03 | 2008-12-10 | 南京永能建材技术有限公司 | Liquid cement grinding aid and preparation method thereof |
| CN101428985A (en) * | 2008-11-05 | 2009-05-13 | 北京中大新材能源有限公司 | Composite grinding aid, production method and uses thereof |
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