CN108821628A - A kind of no chlorine high-early (strength) cement grinding aid and preparation method thereof - Google Patents
A kind of no chlorine high-early (strength) cement grinding aid and preparation method thereof Download PDFInfo
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- CN108821628A CN108821628A CN201810761084.9A CN201810761084A CN108821628A CN 108821628 A CN108821628 A CN 108821628A CN 201810761084 A CN201810761084 A CN 201810761084A CN 108821628 A CN108821628 A CN 108821628A
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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
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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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/48—Clinker treatment
- C04B7/52—Grinding ; After-treatment of ground cement
-
- 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
This application provides a kind of no chlorine high-early (strength) cement grinding aids and preparation method thereof, are related to cement additive technical field, including following component：Reinforcing agent, dispersing agent and water；Wherein, reinforcing agent is ammonium acetate；Wherein, dispersing agent is modified hydramine.The grinding aid not chloride ion-containing, it is harmless to building and human body, and it can effectively improve the intensity and compression strength of cement, effectively improve the yield of cement, it effectively eliminates between cement granules and the mutual electrostatic attraction between ball forging, improves the grinding efficiency of cement grinding mill, improve the grinding efficiency of powder concentrator, to improve cement mill unit-hour output, power consumption is reduced.
Description
Technical field
The invention belongs to cement additive technical fields, and in particular to a kind of no chlorine high-early (strength) cement grinding aid and its preparation side
Method.
Background technique
China is manufacture of cement big country, and cement is a kind of very basic material of building trade, in the national economic development
Serve it is considerable, have in terms of defence engineering, bridge road engineering, residential houses, quotient's residence and its
It is widely applied.Manufacture of cement industry is to consume energy quite huge, accounts about the one third of building materials industry total energy consumption, manufacture of cement
Main technique includes three processes：The firing of the grinding, clinker of raw material and the grinding of clinker.The grinding in this technical process
Energy consumption highest, and rate of energy loss is very high in grinding process, and utilization rate is at a fairly low, energy consumed by clinker grinding process
Amount account for gross energy at least more than half, only small part energy acts on increase material grinding, other overwhelming majority are converted into heat
Amount wastes.Reason is that fineness of materials constantly increases in grinding process, if cement reach enough fineness and
The phenomenon that mill is outer, this can generate cushion to a certain extent cannot be drawn off in time, rushed again to make to grind interior material
Collision and grinding are hit, more energy are consumed；In addition, the adhesion strength and interfacial tension of powder can also become with the raising of fineness
Greatly, this will lead to the established crack of particle and heals again, increase the energy consumption of grinding again.To sum up, the above is all
It can produce serious influence to milling equipment mill efficiency, and the utilization rate of energy is caused to substantially reduce.In manufacture of cement,
Due to energy consumption and mill efficiency be restrict its development principal element, so improve its mill efficiency, reduce energy consumption oneself through becoming
Cement industry top priority urgently to be solved.
In order to improve mill efficiency, energy consumption is reduced, energy saving, country's cement production enterprise generally uses two kinds of measures one at present
It is that energy-efficient mesh so as to improve grinding mode and grinding operation process flow, is reached by the improvement of grinding system mechanical structure
's；Another measure is then to be achieved the goal into grinding material using the method for adding a small amount of grinding aid.The first measure exists
It can be improved mill efficiency to a certain extent, reduce energy consumption, but generally require increase mechanical equipment, thus greatly increase
The cost of investment of manufacture of cement；And second of measure is easy to operate, small investment, and quick, and can be good at improving water
Mud performance.Based on the above advantage of second of measure, cement production enterprise increasingly payes attention to grinding aid effect, and has obtained state
Inside and outside extensive research Jian hair and popularization and application.
Since the amount that powdery cement grinding aid needs to add is relatively high, and powdery cement grinding aid is mostly compound with technical pure
Organic salt and inorganic salts are primary raw material, these compound organic salts or inorganic salts contain more the chlorides such as calcium chloride, sodium chloride and
Sodium sulphate, the chloride ion in cement content that this will lead to produce are higher, it is difficult to reach grinding aid in new nation's standard and add
Enter the requirement that amount should be not more than 0.06% no more than 0.5% and chloride ion in cement content of cement weight, if in cement
Chloride ion content crosses higher position and pollutes the environment equal harmful acts to reinforcing bar generation burn into；If the excessive addition of sodium sulphate,
Although being conducive to the early strong raising of cement, the raising of alkali content brings the deficiency of later strength, the surface accumulation of salt in the surface soil and is also easy to produce alkali
Aggregate reaction influences the durability of concrete.
Meanwhile there is also following deficiencies for existing powdery cement grinding aid：Grinding aid product cost is higher, to large dosage stone
The cement of lime stone mention potent fruit it is unobvious, containing the harmful components such as the chloride ion for having an impact building service life, grinding aid quality
Unstable, volume often exceeded addition, so as to cause cement quality fluctuation.
Summary of the invention
In order to overcome the shortcomings of described in background technique, the embodiment of the present application provide a kind of no chlorine high-early (strength) cement grinding aid and
Preparation method, the grinding aid can effectively improve the intensity and compression strength of cement, effectively improve the yield of cement, be free of
Chloride ion, it is harmless to building and human body, it effectively eliminates between cement granules and the mutual electrostatic attraction between ball forging, improves cement
The grinding efficiency of mill, improves the grinding efficiency of powder concentrator, to improve cement mill unit-hour output, reduces power consumption.
The embodiment of the present application solves technical solution used by its technical problem：
A kind of no chlorine high-early (strength) cement grinding aid, in parts by weight, the cement grinding aid includes following component：Enhancing
7-25 parts of agent, 23-65 parts of dispersing agent and 25-75 parts of water；
Wherein, the reinforcing agent packet is ammonium acetate；
Wherein, the dispersing agent is one of modified hydramine or a variety of.
Preferably, modified hydramine includes monoethanolamine, diethanol amine and triethanolamine.
Preferably, dispersing agent further includes one of glycerine, diethylene glycol (DEG), white sugar and ethylene glycol or a variety of.
Preferably, reinforcing agent further includes one of carbon black, tertiary sodium phosphate, sodium aluminate or a variety of.
Preferably, the purity of ammonium acetate is 95-98%.
Preferably, the concentration of triethanolamine is 85-99%, and the concentration of the diethylene glycol (DEG) is 80-99%, described the third three
Determining alcohol is 85-90%.
Preferably, in parts by weight, the cement grinding aid is by 2-10 parts of ammonium acetate, 5-15 parts of sodium aluminate, three
10-30 parts of ethanol amine, 3-10 parts of white sugar, 10-25 parts of diethylene glycol (DEG) and 30-65 parts of water compositions.
Preferably, in parts by weight, the cement grinding aid is by 2-5 parts of carbon black, 2-5 parts of ammonium acetate, sodium aluminate
1-8 parts, 10-15 parts of triethanolamine, 5-10 parts of white sugar, 8-15 parts of diethylene glycol (DEG) and 30-65 parts of water.
A kind of preparation method of no chlorine high-early (strength) cement grinding aid is also disclosed, this method comprises the following steps：In reaction kettle
In, reinforcing agent and dispersing agent is added, is stirring evenly and then adding into water, mixes, stirring can be prepared for 1-2 hours.
The advantages of the embodiment of the present application is：
1, not chloride ion-containing, it is without side-effects to building and human body；
2, cement grinding aid effectively eliminates between cement granules and the mutual electrostatic attraction between ball forging, improves cement grinding mill
Grinding efficiency, improves the grinding efficiency of powder concentrator, to improve cement mill unit-hour output, reduces power consumption, output increased is in 8-
Between 20%, ton cement reduces power consumption in 3-5KWH；
3, the cement grinding aid can effectively facilitate the hydration reaction of cement early stage and brilliant item is grown, and keep the early stage of cement strong
Degree is improved rapidly, and 1 day intensity can be improved 15-20%, and compression strength improves 10% or more within 3 days, and compression strength mentions within 28 days
It is high by 5% or more；Be conducive to concrete construction unit to demould ahead of time, accelerate construction progress；
4, in the case where intensity remains unchanged, increase fine slag contents in 8-10%, increase flyash between 4-6%,
Increase lime stone 5% or more, the production cost of homogenous quantities cement is effectively reduced；
5, good with the adaptability of concrete admixture.
Specific embodiment
The embodiment of the present application is solved in the prior art by providing a kind of no chlorine high-early (strength) cement grinding aid and preparation method thereof
Grinding aid product cost is higher, it is unobvious that potent fruit is mentioned to the cement of large dosage lime stone, containing the building service life that has an impact
Big etc. the problem of harmful components, grinding aid unstable quality, the volume such as chloride ion.
Technical solution general thought in the embodiment of the present application is as follows：
A kind of no chlorine high-early (strength) cement grinding aid, in parts by weight, the cement grinding aid includes following component：Enhancing
7-25 parts of agent, 23-65 parts of dispersing agent and 25-75 parts of water；
Wherein, the reinforcing agent packet is ammonium acetate；
Wherein, the dispersing agent is one of modified hydramine or a variety of.
Hydramine substance is a kind of common surface reactive material, it includes：Monoethanolamine, diethanol amine, triethanolamine
And modified Propanolamine etc..Hydramine substance is added in cement grinding aid as auxiliary agent, monoethanolamine, diethanol amine, three second
Hydramine is colourless thick liquid, and micro- smell for having ammonia is in strong basicity in aqueous solution, is that a kind of very strong non-ionic surface of polarity is living
Property agent can reduce cement particle surface energy as cement grinding aid, eliminates fine grain electrostatic attraction, reduces particle
Reunite, promotes the raising of mill efficiency, and have fine facilitation to cement early strength development, play early strength function.
In the present embodiment, partial esterification after ammonium acetate and modified hydramine mix in water, the esterification mixture of generation are molten
Liquid greatly improves the intensity and grinding aid of cement, and containing by adjusting hydramine substance in the case where not introducing chloride ion
Amount configures no chlorine and early strong cement grinding aid.The cement for being added to the cement grinding aid can control chloride ion content
Not exceeded, intensity greatly improves, and due to the effect of modified hydramine, reduces cement particle surface energy, eliminate fine grain
Electrostatic attraction reduces particle agglomeration, promotes powder efficient utilization.Chamotte powder grinds the size distribution narrow of the particle come, 3-
32 μm of effective granule content increases.
The addition of ammonium acetate in cement grinding aid, keeps the cement granules generated in process of lapping thinner, and grain corner is less,
Surface is more smooth；To making the cement granules material that the grinding aid is added in hydration process, aquation faster, aquation depth it is deeper,
Strength of cement after solidification is higher.
In above-mentioned technical proposal, preferably modified hydramine includes modified monoethanolamine, diethanol amine and triethanolamine and modification
Propanolamine etc..
In above-mentioned technical proposal, preferred dispersants further include one of glycerine, diethylene glycol (DEG), white sugar and ethylene glycol or more
Kind.Above-mentioned alcohols material is added in cement grinding aid, cement granules degree and partial size point after mainly adjusting grinding as needed
Cloth, or improve early intensity.
Wherein, glycerine is used to reduce the fineness of cement, improves grinding efficiency；Diethylene glycol (DEG) is colorless and transparent sticky oil liquid
Body has hygroscopicity, has water imbibition, there is acrid odors, be a kind of stronger nonionic surfactant of polarity, can eliminate water
Electrostatic attraction between mud particle improves the mobility in powder process between particle, improves mill efficiency；So as to improve water
The uniformity of mud material particles distribution, and have good function and effect to the coarse granule in material；White sugar is as grinding aid group
Point, power consumption can not only be reduced, and be all improved to some extent to cement early anaphase cement mortar strength；Ethylene glycol can make cement
Angle of repose decline, makes to tail over significant decrease, has grinding-aid effect to cement grinding.
In the above-mentioned technical solutions, preferred reinforcing agent further includes one of carbon black, tertiary sodium phosphate, sodium aluminate or more
Kind.
Wherein, the strong of cement can be further enhanced during hardening of cement by superfine carbon black being added in cement grinding aid
Degree；The addition of tertiary sodium phosphate and sodium aluminate can introduce the sodium ion that strength of cement can be enhanced.And the addition of tertiary sodium phosphate,
The calcium phosphate precipitations objects such as insoluble calcium phosphate Ca3 (PO4) 2 are generated in cement hydration process is conducive to the close of cement-hydrate
Reality increases intensity.
Sodium aluminate high-temperature fusion product is white powder, soluble easily in water, and aluminum hydroxide precipitation, water is precipitated after dissolving in water
Solution alkaline, pH value 12.3 easily absorb moisture and carbon dioxide, there is hygroscopicity.Aqueous solution is in strong basicity, can be absorbed gradually
Moisture forms aluminum hydroxide precipitation, effectively digests the excessive moisture in cement, reduces the stomata occurred by moisture evaporation, there is increasing
Pretend use.
In the above-mentioned technical solutions, the purity of acetic acid amine aqueous solution is 95-98%.
In the above-mentioned technical solutions, the concentration of triethanolamine aqueous solution is 85-99%, and the concentration of diethylene glycol (DEG) aqueous solution is
80-99%, the concentration of glycerin solution are 85-90%.
As optimal technical scheme, in parts by weight, cement grinding aid is by 2-10 parts of ammonium acetate, sodium aluminate 5-15
Part, 10-30 parts of triethanolamine, 3-10 parts of white sugar, 10-25 parts of diethylene glycol (DEG) and 30-65 parts of water compositions.
As optimal technical scheme, in parts by weight, cement grinding aid is by 2-5 parts of carbon black, 2-5 parts of ammonium acetate, aluminium
Sour sodium 1-8 parts, 10-15 parts of triethanolamine, 5-10 parts of white sugar, 8-15 parts of diethylene glycol (DEG) and 30-65 parts of water.
A kind of preparation method of no chlorine high-early (strength) cement grinding aid is also disclosed, this method comprises the following steps：In reaction kettle
In, reinforcing agent and dispersing agent is added, is stirring evenly and then adding into water, mixes, stirring can be prepared for 1-2 hours.
Embodiment 1：
In parts by weight, ammonium acetate 7KG, triethanolamine 23KG and water 25KG are weighed, is added in reaction kettle, is stirred
Cement grinding aid 55KG can be prepared in 1 hour in mixing.It is indicated with GA1.
Embodiment 2：
In parts by weight, ammonium acetate 25KG, triethanolamine 65KG and water 75KG are weighed, is added in reaction kettle, stirs
Cement grinding aid 165KG can be prepared in 2 hours by mixing mixing.
Embodiment:3：
In parts by weight, ammonium acetate 20KG, triethanolamine 40KG and water 60KG are weighed, is added in reaction kettle, stirs
Cement grinding aid 120KG can be prepared in 2 hours by mixing mixing.
Embodiment 4：
In parts by weight, ammonium acetate 10KG, triethanolamine 35KG and water 45KG are weighed, is added in reaction kettle, stirs
Cement grinding aid 90KG can be prepared in 2 hours by mixing mixing.It is indicated with GA4.
Embodiment 5：
In parts by weight, ammonium acetate 2KG, sodium aluminate 10KG, triethanolamine 10KG, white sugar 3KG, diethylene glycol (DEG) are weighed
10KG and water 30KG, is added in reaction kettle, and cement grinding aid 65KG can be prepared by being stirred 1 hour.Wherein, three second
The concentration of hydramine is 85%, and the concentration of diethylene glycol (DEG) is 80%.
Embodiment 6：
In parts by weight, ammonium acetate 10KG, sodium aluminate 15KG, triethanolamine 30KG, white sugar 10KG, diethylene glycol (DEG) are weighed
25KG and water 65KG, is added in reaction kettle, and cement grinding aid 155KG can be prepared by being stirred 2 hours.Wherein, three
The concentration of ethanol amine is 99%, and the concentration of diethylene glycol (DEG) is 99%.
Embodiment 7：
In parts by weight, ammonium acetate 6KG, sodium aluminate 8KG, triethanolamine 15KG, white sugar 6KG, diethylene glycol (DEG) are weighed
18KG and water 50KG, is added in reaction kettle, and cement grinding aid 103KG can be prepared by being stirred 1.5 hours.Wherein,
The concentration of triethanolamine is 90%, and the concentration of diethylene glycol (DEG) is 90%.It is indicated with GA7.
Embodiment 8：
Weigh carbon black 2KG, ammonium acetate 2KG, sodium aluminate 1KG, triethanolamine 10KG, white sugar 5KG, diethylene glycol (DEG) 8KG and water
30KG is added in reaction kettle, and cement grinding aid 58KG can be prepared by being stirred 1 hour.Acetic acid amine concentration is 96%,
The concentration of triethanolamine is 85%, and the concentration of diethylene glycol (DEG) is 80%.
Embodiment 9：
Weigh carbon black 5KG, ammonium acetate 5KG, sodium aluminate 8KG, triethanolamine 15KG, white sugar 10KG, diethylene glycol (DEG) 25KG and water
65KG is added in reaction kettle, and cement grinding aid 133KG can be prepared in 2 hours in stirring.Acetic acid ammonium concentration is 98%, three
The concentration of ethanol amine is 99%, and the concentration of diethylene glycol (DEG) is 99%.
Embodiment 10：
Weigh carbon black 3KG, ammonium acetate 3KG, sodium aluminate 6KG, triethanolamine 12KG, white sugar 8KG, diethylene glycol (DEG) 18KG and water
45KG is added in reaction kettle, and cement grinding aid 95KG can be prepared by being stirred 1.5 hours.Acetic acid ammonium concentration is
95%, the concentration of triethanolamine is 95%, and the concentration of diethylene glycol (DEG) is 98%.
Embodiment 11：
According to the number of parts by weight, carbon black 3KG, ammonium acetate 14KG, monoethanolamine 10KG, white sugar 8KG, glycerine are weighed
20KG, ethylene glycol 10KG and water 65KG, are added in reaction kettle, and cement grinding aid can be prepared by being stirred 1.5 hours
130KG, wherein glycerol concentration is 85%.It is indicated with GA11.
Embodiment 12：
According to the number of parts by weight, tertiary sodium phosphate 8KG, sodium aluminate 8KG, ammonium acetate 9KG, diethanol amine 10KG, white is weighed
Sugared 8KG, diethylene glycol (DEG) 12KG, glycerine 12KG and water 70KG, are added in reaction kettle, and being stirred 2 hours can be prepared
Cement grinding aid 137KG, glycerol concentration 90%.It is indicated with GA12.
Embodiment 13：
According to the number of parts by weight, tertiary sodium phosphate 8KG, sodium aluminate 12KG, diethanol amine 20KG, white sugar 8KG, two sweet is weighed
Alcohol 25KG and water 68KG, is added in reaction kettle, and cement grinding aid 141KG can be prepared by being stirred 1-2 hours.
Application example：
Using the clinker of Shandong cement production enterprise, gypsum and various mixing materials, PO42.5 and PC32.5 sky is ground with small
The proportion of plain boiled water mud sample each 20KG, PO42.5 are clinker 75%, and gypsum 5%, lime stone 5%, flyash 15%, specific surface area is
350m2/kg.The proportion of PC32.5 is clinker 55%, gypsum 5%, lime stone 5%, flyash 5%, clinker 10%, specific surface area
For 390m2/kg.On two kinds of cement, prepared GA1, GA4, GA7, GA11 and GA12 grinding aid is done with Different adding amount
Experiment is added dropwise in module, compares the Strength Changes of 3 days and 28 days.
Sample detection：
The microcosmic Mechanism Analysis of grinding aid function and effect：
1. choosing 5 parts of cement samples, is observed by surface topography of the SEM to cement powder particle, observed by SEM
Cement slurry 3d hydrated product is analyzed, XRD analysis cement slurry 3d hydrated product is passed through；Later in 5 parts of cement samples respectively
Grinding is carried out mixed with the grinding aid that embodiment 5-9 is prepared, is carried out respectively by surface topography of the SEM to cement powder particle
Observation, is obtained front and back by XRD analysis cement slurry 3d hydrated product by sem analysis cement slurry 3d hydrated product
As a result analysis total is carried out, following result is obtained：
(1) cement powder particle surface pattern is observed by SEM, does not mix grinding aid mixed with the cement sample of grinding aid
Cement sample, cement granules are thinner, and grain corner is less, and surface is more smooth；Illustrate that grinding aid is conducive between cement granules
Opposite sliding, promotes the heat evolution velocity of entire cement slurry.
(2) by observation cement slurry 3d hydrated product SEM pattern it is found that the cement sample mixed with grinding aid is not mixed and helped
The cement sample of grinding agent, hydrated product is more, and heat evolution velocity is more complete, and cement paste structure is more closely knit, macroscopically shows as water
The growth of earth rubber sand early strength；Illustrate that grinding aid is conducive to the growth of cement mortar early strength.
(3) show that the hydrated product type of each sample is substantially not according to the analysis of the XRD diagram of cement slurry hydrated product
Become, but the hydrated product for not mixing the cement sample of grinding aid mixed with the cement sample of grinding aid increased significantly, it is unhydrated ripe
Expect that particle is relatively fewer, degree of hydration is more complete, illustrates that grinding aid is conducive to improve hydrated reaction of cement speed, it is early to improve glue sand
Phase intensity.
2. grinding aid is detected containing chlorine
It is detected by the sample to embodiment 5-9, when grinding aid additional amount is less than the 0.5% of cement weight, cement
Middle chloride ion content is not more than 0.04%, meets the highest limit value that national cement standard is no more than 0.06% to cement chloride ion.
Finally it should be noted that：Obviously, the above embodiment is merely an example for clearly illustrating the present invention, and simultaneously
The non-restriction to embodiment.For those of ordinary skill in the art, it can also do on the basis of the above description
Other various forms of variations or variation out.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn
The obvious changes or variations that Shen goes out are still in the protection scope of this invention.
Claims (9)
1. a kind of no chlorine high-early (strength) cement grinding aid, which is characterized in that in parts by weight, the cement grinding aid includes as follows
Component：7-25 parts of reinforcing agent, 23-65 parts of dispersing agent and 25-75 parts of water；
Wherein, the reinforcing agent packet is ammonium acetate；
Wherein, the dispersing agent is one of modified hydramine or a variety of.
2. a kind of no chlorine high-early (strength) cement grinding aid according to claim 1, which is characterized in that the modified hydramine includes one
Ethanol amine, diethanol amine and triethanolamine.
3. a kind of no chlorine high-early (strength) cement grinding aid according to claim 2, which is characterized in that the dispersing agent further includes third
One of triol, diethylene glycol (DEG), white sugar and ethylene glycol are a variety of.
4. a kind of no chlorine high-early (strength) cement grinding aid according to claim 3, which is characterized in that the reinforcing agent further includes charcoal
One of black, tertiary sodium phosphate, sodium aluminate are a variety of.
5. a kind of no chlorine high-early (strength) cement grinding aid according to claim 4, which is characterized in that the purity of the ammonium acetate
For 95-98%.
6. a kind of no chlorine high-early (strength) cement grinding aid according to claim 3, which is characterized in that the triethanolamine it is dense
Degree is 85-99%, and the concentration of the diethylene glycol (DEG) is 80-99%, and the glycerol concentration is 85-90%.
7. a kind of no chlorine high-early (strength) cement grinding aid according to claim 1-4, which is characterized in that according to parts by weight
Number meter, the cement grinding aid by 2-10 parts of ammonium acetate, 5-15 parts of sodium aluminate, 10-30 parts of triethanolamine, 3-10 parts of white sugar,
10-25 parts and water 30-65 parts compositions of diethylene glycol (DEG).
8. a kind of no chlorine high-early (strength) cement grinding aid according to claim 5, which is characterized in that in parts by weight, institute
The cement grinding aid stated by 2-5 parts of carbon black, 2-5 parts of ammonium acetate, 1-8 parts of sodium aluminate, 10-15 parts of triethanolamine, 5-10 parts of white sugar,
8-15 parts and water 30-65 parts of diethylene glycol (DEG).
9. preparing a kind of method of no chlorine high-early (strength) cement grinding aid described in claim 1-8, which is characterized in that the method
Include the following steps：In a kettle, reinforcing agent and dispersing agent is added, is stirring evenly and then adding into water, mixes, stirs 1-2 hours
It can be prepared.
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| CN110314763A (en) * | 2019-07-25 | 2019-10-11 | 中南大学 | A method of pellet feed is prepared using fine ore |
| CN110314763B (en) * | 2019-07-25 | 2021-09-21 | 中南大学 | Method for preparing pellet raw material by using fine ore |
| CN111470796A (en) * | 2020-03-31 | 2020-07-31 | 辽宁天宝华瑞建材有限公司 | Cement grinding aid |
| CN112624653A (en) * | 2020-12-31 | 2021-04-09 | 上海三瑞高分子材料股份有限公司 | Early-strength cement grinding aid |
| CN114163176A (en) * | 2021-12-03 | 2022-03-11 | 北京建筑大学 | Sintering-free raw material ball filler for rural sewage treatment system, and preparation and maintenance methods thereof |
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Application publication date: 20181116 |