CN109836064A - A kind of cement grinding aid and preparation method thereof - Google Patents
A kind of cement grinding aid and preparation method thereof Download PDFInfo
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- CN109836064A CN109836064A CN201811581251.8A CN201811581251A CN109836064A CN 109836064 A CN109836064 A CN 109836064A CN 201811581251 A CN201811581251 A CN 201811581251A CN 109836064 A CN109836064 A CN 109836064A
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Abstract
The invention discloses a kind of in cement production process as the cement grinding aid and preparation method thereof for improving grinding efficiency, is related to manufacture of cement processing technique field.The technical scheme is that a kind of cement grinding aid, is characterized in that the cement grinding aid includes the raw material of following parts by weight: 25-47 parts of egg-shell meal, 2.5-5 parts of water；The egg-shell meal is the screenings that 0.85mm sieve is crossed after discarded birds, beasts and eggs shell is ground.The present invention, which has compared with prior art using environmentally protective, waste utilization fowl egg-shell meal as primary raw material, to be prepared, the alternative existing cement grinding aid of the cement grinding aid described in it, can significantly improve cement technology performance indicator, the substantive distinguishing features outstanding of update and significant progress.
Description
Technical field
The present invention relates to manufacture of cement processing technique fields, more particularly to one kind to grind in cement production process as raising
Grind the cement grinding aid and preparation method thereof of efficiency.
Background technique
During cement, the surface of microparticle will form more and more unsaturated valence links and with positive negative electricity
The structural unit of lotus makes particle be in the upper state of meta-stable.Particle surface energy, which also suddenly gathers, to be increased, the group of microparticle than
Under biggish attractive interaction effect, form the aggregate for being difficult to disperse again, particle coalesces again increases ultra-fine grinding difficulty.It helps
After grinding agent is added, under conditions of keeping initial quality standard, cement mill yield 10%-30% can be improved, economize on electricity 6-12kWh/
t；Cement granules gradation is obviously improved；Strength of cement can be made to improve 3-10MPa when keeping original mill output;Keep original water
Mud yield and quality can add mixing material 3%-8% more；The operating condition of cement grinding can fundamentally be improved using grinding aid, reduced
Circulating load improves grinding efficiency, can also reduce the power consumption of cement pneumatic conveying and listen wind to the mill of pipeline；Grinding aid is to raising
The early strength of concrete improves mobility and brings certain benefit；It is also beneficial to improve the workability, impervious of cement concrete
Property and frost resistance, improve its reinforcing bar cohesion；Cement granules gradation is obviously improved.China's national standard " common portland cement "
(GB175-2007) formally implement on June 1st, 2007, increasing in this cement standard " allows to be added in manufacture of cement
Chloride ion content in≤0.5% grinding aid and cement is necessary≤0.06% " requirement.
House refuse carries out whole sortings during processing, and purpose is exactly the waste that will have value of exploiting and utilizing
Further developed and used.And some wastes are also that can not sort, as birds, beasts and eggs shell, the kitchen ventilator of rubbish from cooking recycle
Waste oil, remaining meal grape wine etc..And the substance for having utility value in remaining meal rubbish how is developed, it is allowed to turn waste into wealth, this is undoubtedly
It is the very worth project for going research to one skilled in the art.Only by taking the birds, beasts and eggs shell in waste as an example, according to having
Document announcement is closed, China is egg production and consumption big country, and every annual meeting generates largely discarded eggshell, each Eggshell weight and is about
5.2-5.4g, with a thickness of 0.3-0.4mm, as soon as calculating by an egg is eaten for each person every day, discarded egg shell has 7280- daily
7560 tons of weights.And the ingredient in eggshell contains calcium carbonate 83-85%, protein 15-17% through modern various scientific method detections, and
Containing various trace elements (zinc, copper, manganese, iron, selenium etc.), wherein the heavy metal element lead (Pb) being harmful to the human body, arsenic (As)
Content is extremely low, respectively less than 1PPM.Lysozyme in eggshell and egg white provides antibacterial functions, inhibits harmful microbe growth.
By 23.2 hundred million tons of China's cement output calculating in 2017, the maximum doping quantity of grinding aid was cement quality 0.5%, about needed to consume
1.16 thousand ten thousand tons of grinding aid.Therefore, birds, beasts and eggs shell utility value how is developed, for widely applied cement currently on the market
Cement grinding aid made of an alternative biomaterial is found in agent, this be to one skilled in the art one urgently
The breakthrough technical task solved.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, and provide one kind with environmentally protective, useless
Object using fowl egg-shell meal as primary raw material, have and substitute existing cement grinding aid and significantly improve cement technology performance indicator
Cement grinding aid.
Another technical problem to be solved by this invention is overcome the deficiencies in the prior art, and provide it is a kind of prepare it is new with
Environmentally protective, waste utilization fowl egg-shell meal as primary raw material, have and substitute existing cement grinding aid and significantly improve cement
The method of the cement grinding aid of technical performance index.
In order to solve the above technical problems, the present invention is achieved by implementing following technical solution: a kind of cement helps
Grinding agent is characterized in that the cement grinding aid further includes the raw material of following parts by weight: 25-47 parts of egg-shell meal, water 2.5-
5 parts；The egg-shell meal is the screenings that 0.85mm sieve is crossed after discarded birds, beasts and eggs shell is ground.
Further to solve above-mentioned technical problem, the preferred embodiment of above-mentioned technical proposal is:
Cement grinding aid described above contains the raw material of following parts by weight: 0-3 parts of triethanolamine, 0-1.5 parts of calcium chloride, and kitchen ventilator
Waste oil 0-10 parts, 0-10 parts of grape wine of recycling.
Cement grinding aid described above includes the raw material of following parts by weight: 30-45 parts of egg-shell meal, 3-4 parts of water, and triethanolamine
1-2.5 parts, 0.5-1 parts of calcium chloride, kitchen ventilator recycles waste oil 3-6 parts, 3-5 parts of grape wine.
Cement grinding aid described above includes the raw material of following parts by weight: 45 parts of egg-shell meal, 3.5 parts of water, and triethanolamine 2
Part, 1 part of calcium chloride, kitchen ventilator recycles 4 parts of waste oil, 3.5 parts of grape wine.
Egg-shell meal described above is any one of egg shell, Ovum Anas domestica putamina, goose egg-shell, quail eggshell or two kinds or more
Mixture；
Cement grinding aid described above is to be prepared via a method which:
1., cross 0.85mm sieve, extracting screen underflow after birds, beasts and eggs shell grinding that will be discarded；
2., grape wine and egg-shell meal are mixed into paste, dry 3 days and solidified under sunlight；
3., by calcium chloride dissolve water in, with three ethyl alcohol, kitchen ventilator recycling waste oil be added drop-wise in the eggshell powder carrier after solidifying,
It stirs evenly；
4., by after mixing evenly eggshell powder carrier and clinker, desulfurized gypsum, flyash composition cement major ingredient enter milling
Mill.
Cement grinding aid described above is characterized in that the cement grinding aid in cement production process
Application as the additive for improving grinding efficiency.
The present invention has following substantive distinguishing features outstanding and significant progress compared with prior art:
One is a kind of cement grinding aid of the present invention, the cement grinding aid includes the raw material of following parts by weight: eggshell
25-47 parts of powder, 2.5-5 parts of water；The egg-shell meal is the technology that the screenings of 0.85mm sieve is crossed after discarded birds, beasts and eggs shell is ground
Scheme proposes application of the cement grinding aid of the present invention in cement production process as the additive for improving grinding efficiency
A reliable technical solution is supplied, this technical solution is not only that discarded birds, beasts and eggs shell provides the item developed and used again
Part, and it is environmentally protective, pollution-free to have the cement grinding aid, is made that substantive tribute outstanding for energy-saving and emission-reduction
It offers, to make cement grinding aid of the present invention and preparation method thereof that there are substantive distinguishing features outstanding compared with prior art
And significant progress.
The second is the preparation method of cement grinding aid of the present invention is to be prepared via a method which: 1., will give up
0.85mm sieve, extracting screen underflow are crossed after the birds, beasts and eggs shell grinding of abandoning；2., grape wine and egg-shell meal is mixed into paste, dry 3 under sunlight
It is solidified；3., by calcium chloride dissolve water in, with three ethyl alcohol, kitchen ventilator recycling waste oil be added drop-wise to the egg-shell meal after solidifying
In carrier, stir evenly；4., by after mixing evenly eggshell powder carrier and clinker, desulfurized gypsum, flyash composition water
Mud major ingredient enters the technical solution of milling mill, and the characteristic of this biomaterial of eggshell is adequately utilized in this technical solution, egg
83-85% calcium carbonate in shell becomes calcium carbonate fine powder after grinding, is real its characteristic with Micro-aggregate filling effect
Now shorten cement setting time, reduce cement normal consistency water consumption, improves strength of cement and provide a reliable technology branch
Support, so that the preparation method of cement grinding aid of the present invention be made to have, method is simple, technically reliable, significant effect, and existing
Having technology to compare has substantive distinguishing features outstanding and significant progress.
The third is the preparation method of cement grinding aid of the present invention, being will on the basis of sufficiently research eggshell structure
The had reticular structure of egg shell membrane and the characteristic for having absorption property, applying is reducing clinker powder surface energy, reduces particle aggregation,
Increase fine powder content, to realize the effect of the microscopic appearance of regulation hardened paste.And in the cement grinding mistake for overcoming the prior art
Cheng Zhong, mechanical energy are converted to thermal energy, grind interior temperature and increase, retarder dihydrate gypsum, which just dries out, generates semi-hydrated gypsum or anhydrous
Gypsum, when the technical issues of influencing cement retardative effect, the present invention is using the alkaline egg white gel in egg-shell meal in cement grinding
Process absorbs heat, reach reduce grind in temperature technical solution, while alkaline egg white gel and having cementing, waterproof membrane, biology
The characteristics such as mineralising template, sterilization.For the surface-active for further exciting eggshell, efficient grinding aid function is played, it is of the present invention
Cement grinding aid also passes through the compound various polarity functional group of the protein molecular side chain in egg-shell meal, to develop multiple functions type cement
Product provides the support of the technology of preparing of reliable additive and provides green, sustainable technical solution.To make the present invention
The cement grinding aid not only realize the characteristics of environmentally protective, waste utilization but also have substitute existing cement grinding aid and
The technical effect of cement technology performance indicator can be significantly improved, this has substantive distinguishing features outstanding compared with prior art and shows
The progress of work.
Specific embodiment
The following detailed description of a kind of cement grinding aid of the present invention and preparation method thereof as raising in cement production process
The application of the additive of grinding efficiency, the limiting to the claimed invention that must not be interpreted as in all senses.
Embodiment 1
A kind of cement grinding aid of the embodiment of the present invention 1, the cement grinding aid include the raw material of following parts by weight: egg-shell meal 47
Part, 2.5 parts of water；The egg-shell meal is the screenings that 0.85mm sieve is crossed after discarded birds, beasts and eggs shell is ground.
The preferred embodiment of above-mentioned technical proposal is:
Egg-shell meal described above is egg shell powder；
Cement grinding aid described above is to be prepared via a method which:
1., cross 0.85mm sieve, extracting screen underflow after birds, beasts and eggs shell grinding that will be discarded；
2., fine powder soaked with water, stir evenly；
3., by after mixing evenly eggshell powder carrier and clinker, desulfurized gypsum, flyash composition cement major ingredient enter milling
Mill.
Cement grinding aid described above is characterized in that the cement grinding aid in cement production process
Application as the additive for improving grinding efficiency.Through performance test are as follows: compared with blank cement, 45 μm tail over reduction 2.5%,
Consumptive use of water normal consistence reduces 0.93%, and fresh water curing condition, 28d flexural strength improves 0.6MPa, and 28d compression strength mentions
4.68MPa。
The above are a kind of cement grinding aids of the embodiment of the present invention 1 and preparation method thereof in cement production process as mentioning
The application process of the additive of high grinding efficiency.
Embodiment 2
A kind of cement grinding aid of the embodiment of the present invention 2, the cement grinding aid include the raw material of following parts by weight: egg-shell meal 45
Part, 5 parts of water；The egg-shell meal is the screenings that 0.85mm sieve is crossed after discarded birds, beasts and eggs shell is ground.
The preferred embodiment of above-mentioned technical proposal is:
Egg-shell meal described above is two kinds of mixture of Ovum Anas domestica putamina and goose egg-shell；
Cement grinding aid described above is to be prepared via a method which:
1., cross 0.85mm sieve, extracting screen underflow after birds, beasts and eggs shell grinding that will be discarded；
2., fine powder soaked with water, stir evenly；
3., by after mixing evenly eggshell powder carrier and clinker, desulfurized gypsum, flyash composition cement major ingredient enter milling
Mill.
Cement grinding aid described above is characterized in that the cement grinding aid in cement production process
Application as the additive for improving grinding efficiency.The performance test results are same as Example 1.
The above are a kind of cement grinding aids of the embodiment of the present invention 2 and preparation method thereof in cement production process as mentioning
The application process of the additive of high grinding efficiency.
Embodiment 3
A kind of cement grinding aid of the embodiment of the present invention 3, the cement grinding aid include the raw material of following parts by weight: egg-shell meal 25
Part, 5 parts of water；The egg-shell meal is the screenings that 0.85mm sieve is crossed after discarded birds, beasts and eggs shell is ground.
The preferred embodiment of above-mentioned technical proposal is:
Cement grinding aid described above also contains the raw material of following parts by weight: 3 parts of triethanolamine, 1.5 parts of calcium chloride, kitchen ventilator returns
Receive 10 parts of waste oil, 10 parts of grape wine.
Egg-shell meal described above is egg shell, two kinds of quail egg of mixture；
Cement grinding aid described above is to be prepared via a method which:
1., cross 0.85mm sieve, extracting screen underflow after birds, beasts and eggs shell grinding that will be discarded；
2., grape wine and egg-shell meal are mixed into paste, dry 3 days and solidified under sunlight；
3., by calcium chloride dissolve water in, with triethanolamine, kitchen ventilator recycling waste oil be added drop-wise to the eggshell powder carrier after solidifying
In, it stirs evenly；
4., by after mixing evenly eggshell powder carrier and clinker, desulfurized gypsum, flyash composition cement major ingredient enter milling
Mill.
Cement grinding aid described above is characterized in that the cement grinding aid in cement production process
Application as the additive for improving grinding efficiency.Performance test: 45 μm tail over 1%, 17.4% are reduced compared with blank cement, water
Mud fineness is most thin.Using 0.3 ratio of mud, net slurry test block 2mm × 2mm × 2mm being prepared, can be floated on the water, density ratio water is light,
And there are hydrophobicity and moisture resistance.
The above are a kind of cement grinding aids of the embodiment of the present invention 3 and preparation method thereof in cement production process as mentioning
The application process of the additive of high grinding efficiency.
Embodiment 4
A kind of cement grinding aid of the embodiment of the present invention 4, the cement grinding aid include the raw material of following parts by weight: egg-shell meal
30 parts, 3 parts of water, 2.5 parts of triethanolamine, 1 part of calcium chloride, kitchen ventilator recycles 6 parts of waste oil, 5 parts of grape wine.
Egg-shell meal described above is egg shell, Ovum Anas domestica putamina, four kinds of goose egg-shell, quail eggshell mixtures；
Cement grinding aid described above is to be prepared via a method which:
1., cross 0.85mm sieve, extracting screen underflow after birds, beasts and eggs shell grinding that will be discarded；
2., grape wine and egg-shell meal are mixed into paste, dry 3 days and solidified under sunlight；
3., by calcium chloride dissolve water in, with triethanolamine, kitchen ventilator recycling waste oil be added drop-wise to the eggshell powder carrier after solidifying
In, it stirs evenly；
4., by after mixing evenly eggshell powder carrier and clinker, desulfurized gypsum, flyash composition cement major ingredient enter milling
Mill.
Cement grinding aid described above is characterized in that the cement grinding aid in cement production process
Application as the additive for improving grinding efficiency.Performance: seawater curing condition, 3d compression strength improve 0.9MPa, and 28d is anti-
Compressive Strength improves 12.26MPa.
The above are a kind of cement grinding aids of the embodiment of the present invention 4 and preparation method thereof in cement production process as mentioning
The application process of the additive of high grinding efficiency.
Embodiment 5
A kind of cement grinding aid of the embodiment of the present invention 5, the cement grinding aid include the raw material of following parts by weight: egg-shell meal 25
Part, 5 parts of water, 1.5 parts of triethanolamine；The egg-shell meal is the screenings that 0.85mm sieve is crossed after discarded birds, beasts and eggs shell is ground.
The preferred embodiment of above-mentioned technical proposal is:
, egg-shell meal described above is two kinds of mixture of Ovum Anas domestica putamina and goose egg-shell；
Cement grinding aid described above is to be prepared via a method which:
1., cross 0.85mm sieve, extracting screen underflow after birds, beasts and eggs shell grinding that will be discarded；
2., fine powder soaked with water, stir evenly；
3., triethanolamine is added drop-wise to eggshell powder carrier, after mixing evenly with clinker, desulfurized gypsum, flyash composition
Cement major ingredient enters milling mill.
Cement grinding aid described above is characterized in that the cement grinding aid in cement production process
Application as the additive for improving grinding efficiency.Performance test performance: seawater curing condition, compared with blank cement, 3d is anti-
Compressive Strength improves 3.86MPa, and 28d compression strength improves 5.88MPa.
The above are a kind of cement grinding aids of the embodiment of the present invention 5 and preparation method thereof in cement production process as mentioning
The application process of the additive of high grinding efficiency.
Embodiment 6
A kind of cement grinding aid of the embodiment of the present invention 6, the cement grinding aid include the raw material of following parts by weight: egg-shell meal 45
Part, 3.5 parts of water, 2 parts of triethanolamine, 1 part of calcium chloride, kitchen ventilator recycles 4 parts of waste oil, 3.5 parts of grape wine；The egg-shell meal
For the screenings for crossing 0.85mm sieve after discarded birds, beasts and eggs shell grinding.
The preferred embodiment of above-mentioned technical proposal is:
Egg-shell meal described above is two kinds of mixture of Ovum Anas domestica putamina and goose egg-shell；
Cement grinding aid described above is to be prepared via a method which:
1., cross 0.85mm sieve, extracting screen underflow after birds, beasts and eggs shell grinding that will be discarded；
2., grape wine and egg-shell meal are mixed into paste, dry 3 days and solidified under sunlight；
3., by calcium chloride dissolve water in, with triethanolamine, kitchen ventilator recycling waste oil be added drop-wise to the eggshell powder carrier after solidifying
In, it stirs evenly；
4., by after mixing evenly eggshell powder carrier and clinker, desulfurized gypsum, flyash composition cement major ingredient enter milling
Mill.
Cement grinding aid described above is characterized in that the cement grinding aid in cement production process
The application of additive as high grinding efficiency.Performance test: compared with blank cement, 45 μm tail over reduction 10.4%.Fresh water is supported
Shield and seawater curing condition, early strength are below blank cement, and 28d intensity is higher than blank cement, and 3d heat of hydration 180J/g is
Prepare a kind of technological approaches of low-heat cement.
The above are a kind of cement grinding aids of the embodiment of the present invention 6 and preparation method thereof in cement production process as mentioning
The application process of the additive of high grinding efficiency.
Embodiment 7
A kind of cement grinding aid of the embodiment of the present invention 7, the cement grinding aid include the raw material of following parts by weight: egg-shell meal
45 parts, 4 parts of water, 2.5 parts of triethanolamine, 0.5 part of calcium chloride, kitchen ventilator recycles 3 parts of waste oil, 3 parts of grape wine.
Egg-shell meal described above is egg shell, two kinds of goose egg-shell of mixture；
Cement grinding aid described above is to be prepared via a method which:
1., cross 0.85mm sieve, extracting screen underflow after birds, beasts and eggs shell grinding that will be discarded；
2., grape wine and egg-shell meal are mixed into paste, dry 3 days and solidified under sunlight；
3., by calcium chloride dissolve water in, with triethanolamine, kitchen ventilator recycling waste oil be added drop-wise to the eggshell powder carrier after solidifying
In, it stirs evenly；
4., by after mixing evenly eggshell powder carrier and clinker, desulfurized gypsum, flyash composition cement major ingredient enter milling
Mill.
Cement grinding aid described above is characterized in that the cement grinding aid in cement production process
Application as the additive for improving grinding efficiency.Through performance test: compared with blank cement, 45 μm tail over reduction 10.4%.It is light
Water curing and seawater curing condition, early strength are below blank cement, and 28d intensity is higher than blank cement.3d heat of hydration 180J/
g.It is a kind of technological approaches for preparing low-heat cement.
The above are a kind of cement grinding aids of the embodiment of the present invention 7 and preparation method thereof in cement production process as mentioning
The application process of the additive of high grinding efficiency.
The above are a specific embodiment of the invention, those skilled in the art should be appreciated that tool described in the invention
Body embodiment is merely exemplary, rather than for restriction to the scope of the present invention, those skilled in the art according to
It is all in scope of the claimed protection of the invention according to compound made by spirit of the invention and variation.
Claims (7)
1. a kind of cement grinding aid, it is characterised in that: the cement grinding aid includes the raw material of following parts by weight: egg-shell meal 25-
47 parts, 2.5-5 parts of water；The egg-shell meal is the screenings that 0.85mm sieve is crossed after discarded birds, beasts and eggs shell is ground.
2. cement grinding aid according to claim 1, it is characterised in that: the cement grinding aid also contains following parts by weight
Raw material: 0-3 parts of triethanolamine, 0-1.5 parts of calcium chloride, kitchen ventilator recycle waste oil 0-10 parts, 0-10 parts of grape wine.
3. cement grinding aid according to claim 1 or 2, it is characterised in that: the cement grinding aid includes following weight
The raw material of part: 30-45 parts of egg-shell meal, 3-4 parts of water, 1-2.5 parts of triethanolamine, 0.5-1 parts of calcium chloride, kitchen ventilator recycles waste oil
3-6 parts, 3-5 parts of grape wine.
4. cement grinding aid according to claim 1 or 2, it is characterised in that: the cement grinding aid includes following weight
The raw material of part: 45 parts of egg-shell meal, 3.5 parts of water, 2 parts of triethanolamine, 1 part of calcium chloride, kitchen ventilator recycles 4 parts of waste oil, grape wine
3.5 part.
5. cement grinding aid according to claim 1, it is characterised in that: the egg-shell meal is egg shell, Ovum Anas domestica putamina, goose
Any one of eggshell, quail eggshell or two kinds or more of mixture.
6. cement grinding aid according to claim 1, it is characterised in that: the cement grinding aid is by the following method
It is prepared:
1., cross 0.85mm sieve, extracting screen underflow after birds, beasts and eggs shell grinding that will be discarded；
2., grape wine and egg-shell meal are mixed into paste, dry 3 days and solidified under sunlight；
3., by calcium chloride dissolve water in, with triethanolamine, kitchen ventilator recycling waste oil be added drop-wise to the eggshell powder carrier after solidifying
In, it stirs evenly；
4., by after mixing evenly eggshell powder carrier and clinker, desulfurized gypsum, flyash composition cement major ingredient enter milling
Mill.
7. cement grinding aid described in a kind of claim 1-6, it is characterised in that: the cement grinding aid is in manufacture of cement mistake
Application in journey as the additive for improving grinding efficiency.
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2018
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| CN105731855A (en) * | 2016-01-11 | 2016-07-06 | 东源县弘朝科技有限公司 | Vertical mill slag grinding aid and preparation method thereof |
| CN106673479A (en) * | 2016-10-25 | 2017-05-17 | 广东弘朝科技有限公司 | Cement grinding aid used for gangue |
| CN106946481A (en) * | 2017-04-30 | 2017-07-14 | 烟台大学 | A kind of oyster shell whiting surface finish nano grinding aid |
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