CN108328957A - A kind of cement grinding aid - Google Patents
A kind of cement grinding aid Download PDFInfo
- Publication number
- CN108328957A CN108328957A CN201810333026.6A CN201810333026A CN108328957A CN 108328957 A CN108328957 A CN 108328957A CN 201810333026 A CN201810333026 A CN 201810333026A CN 108328957 A CN108328957 A CN 108328957A
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- Prior art keywords
- cement grinding
- cement
- grinding aid
- water
- sulfonic acid
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a kind of cement grinding aid, this cement grinding aid includes that the raw material of following weight percent is made：Triethanolamine 5% 15%, triisopropanolamine 10% 15%, polyalcohol 20% 30%, surfactant 5% 10%, water-reducing agent 2% 7%, modified lignin resin sulfonic acid magnesium 3% 10%, zirconia ball 1% 5%, the fineness and specific surface area of cement products are obviously improved in cement grinding aid of the present invention, improve grinding-aid effect, improve capacity usage ratio, to reduce the cost, it is significantly improved using cement, intensity made of cement grinding aid of the present invention.
Description
Technical field
The present invention relates to cement additive technical field, more particularly to a kind of cement grinding aid.
Background technology
Cement grinding is a most important link in cement production process, and the power consumption in grinding process accounts for about cement life
The 60%-70% of total energy consumption is produced, the grinding pow consumption of wherein finished cement accounts for total power consumption 30%-40%.The grinding process work of cement
Journey is cement material particle process from large to small and electric energy is converted into mechanical energy and then is converted into cement powder surface energy
Energy conversion process, and energy conversion efficiency determines the utilization rate of energy, improves the conversion effect of energy during grinding process
Rate can improve the utilization rate of energy to reduce cost.
Mill efficiency is improved, the measure of following two aspects is usually taken in people：One, improve milling equipment and grinding process
To utilize mechanical energy to greatest extent；Two, cement grinding aid is added in cement pulverizing course to improve mill efficiency.Wherein
Two kinds of measures are the research emphasis of current field of cement production.In America and Europe, the developed countries such as Japan, the use of grinding aid phase
When universal, and we are also in the infancy.China shows grinding aid, and there are still many problems, such as chlorine in use
Salt brings prodigious security risk to the durability of cement and concrete；Grinding aid unstable quality, volume is big, so as to cause water
Mud quality fluctuation, strength of cement are not high enough etc..
Therefore a kind of high-performance is researched and developed, stability is good, can improve capacity usage ratio, the cement of raising strength of cement helps
Grinding agent is particularly important.
Invention content
The purpose of the present invention is to provide a kind of high-performance, and stability is good, can improve capacity usage ratio, improve strength of cement
Cement grinding aid.
The present invention is achieved through the following technical solutions：
A kind of cement grinding aid includes that the raw material of following weight percent is made：Triethanolamine 5%-15%, three isopropanols
Amine 10%-15%, polyalcohol 20%-30%, surfactant 5%-10%, water-reducing agent 2%-7%, modified lignin resin sulfonic acid magnesium
3%-10%, industrial wastes 15%-25%, zirconia ball 1%-5%, water surplus, the zirconia ball grain size are 0.05mm.
Preferably, the cement grinding aid includes that the raw material of following weight percent is made：Triethanolamine 10%-
13%, triisopropanolamine 10%-13%, polyalcohol 25%-30%, surfactant 7%-10%, water-reducing agent 4%-7%, change
Property magnesium lignosulfonate 5%-9%, industrial wastes 15%-25%, zirconia ball 2%-4%, water surplus.
Preferably, the cement grinding aid includes that the raw material of following weight percent is made：：Triethanolamine 10%, three
Isopropanolamine 10%, polyalcohol 30%, surfactant 8%, water-reducing agent 5%, modified lignin resin sulfonic acid magnesium 8%, industrial wastes
18%, zirconia ball 3%, water surplus.
Preferably, the polyalcohol is the mixture of any one or more in ethylene glycol, glycerine, pentaerythrite.
Preferably, the surfactant is lauryl sulfosuccinic acid monoester disodium, Coconut Fatty Acid Monoethanolamide sulphur
The mixture of any one or more in base monomester succinate disodium and single Tryfac 5573.
Preferably, the water-reducing agent is that 2- naphthalene sulfonic acids is received, sulfamic acid is received, calcium lignosulfonate and polycarboxylate water-reducer
In one kind.
Preferably, the preparation method of the modified lignin resin sulfonic acid acid sodium, includes the following steps：In molar ratio 1:0.8
Magnesium lignosulfonate and acrylic acid are weighed, deionized water is added, adds the hydrogenperoxide steam generator of 40% mass concentration, at 100 DEG C
Reaction 4 hours, obtains modified lignin resin sulfonic acid magnesium；The mass ratio of the magnesium lignosulfonate and deionized water is 3:4；It is described
Magnesium lignosulfonate and hydrogenperoxide steam generator mass ratio be 38:1.
Preferably, the industrial wastewater is dyeing waste water or spent acid.
The cement grinding aid adds institute in use, by the 0.05%-0.08% of finished ground cement raw material weight
The cement grinding aid stated carries out cement grinding to cement.
The present invention also provides a kind of preparation methods of cement grinding aid, include the following steps：
(1) water is added in a kettle；
(2) addition zirconia ball, triethanolamine, triisopropanolamine into reaction kettle are stirred on one side to stir 30 minutes, then are added
Enter polyalcohol to stir 60-90 minutes, obtains mixture；
(3) surfactant, water-reducing agent, modified lignin resin sulfonic acid magnesium and work are added in the mixture obtained to step (2)
Industry waste liquid 15%-25% stirs 15 minutes, obtains cement grinding aid.
Modified lignin resin sulfonic acid magnesium：Lignosulfonates are that the processes such as, spray drying sulfonated using papermaking wastewater obtain
One of byproduct, magnesium lignosulfonate is cheap, has certain surface-active and water-reducing effect.Pass through chemical modification, profit
With phenylol in magnesium lignosulfonate, itself and acrylic acid are subjected to copolycondensation, enhance the surface-active of magnesium lignosulfonate
And water-reducing effect.In cement pulverizing course, modified lignin resin sulfonic acid magnesium destroys crystal structure, and can absorb electrostatic electricity
Lotus prevents the particle conglomeration of dispersion.
Water-reducing agent：Water-reducing agent is a kind of under conditions of maintaining concrete slump to be basically unchanged, and can reduce mixing water
The concrete admixture of amount.
Zirconia ball：Have good high intensity and high tenacity, wearability, corrosion-and high-temp-resistant, rigidity high, no at normal temperatures
Magnetic conduction, electrical isolation.For zirconia ball at 600 DEG C, its almost unchanged density of intensity, hardness is 6.00g/cm3, and coefficient of thermal expansion is close
Thermal expansion metal rate can be used with metal bonding.Suitable for bearing, sealing element etc..In cement grinding aid of the present invention, zirconium oxide
Ball can overcome lump material particle cohesive force in cement, destroy crystal structure, to reduce crystal structure degree, increase defect
And surface energy, cause lattice mismatch, surface energy to increase；Show as grain fineness reduction, specific surface area increases, apparent density carries
Height has powder characteristics.
Advantageous effect of the present invention：
(1) it is added to grain size zirconia ball in cement grinding aid of the present invention, at cement grinding initial stage, zirconia ball overcomes water
Lump material particle cohesive force in mud reduces crystal structure degree, increases defect and surface energy, reduces fineness and increases specific surface
Product improves grinding-aid effect；Cement grinding aid of the present invention also added modified lignin resin sulfonic acid magnesium, and modified lignin resin sulfonic acid magnesium is not only
With crystal structure is destroyed, also has the function of absorbing electrostatic charge, prevent the particle conglomeration of dispersion.Cement grinding aid of the present invention
The screening of 45um fineness is 8.6%-9.85%, specific surface area 345m2/kg-357m2/ kg is higher than existing cement grinding aid；This
For invention cement grinding aid when incorporation is 0.05%, raising efficiency is 24.3%-28.7%, and 28d strength of cement enhancing rates are
8.73-12.18 obviously higher than commercially available cement grinding aid.It can be seen that modified lignin resin sulfonic acid magnesium and zirconia ball are synergistic, reach
To the fineness and specific surface area for being obviously improved cement products, improves grinding-aid effect, the effect of capacity usage ratio is improved, to lower
Cost, and improve mechanical strength.
Specific implementation mode
Below in conjunction with specific embodiment, the present invention is further elaborated.
1-4 of the embodiment of the present invention and comparative example 1-2 cement agent prescriptions are shown in Table 1：
Table 1
The preparation method of above-described embodiment and the cement grinding aid of comparative example is as follows：
(1) water is added in a kettle；
(2) addition zirconia ball, triethanolamine, triisopropanolamine into reaction kettle are stirred on one side to stir 30 minutes, then are added
Enter polyalcohol to stir 90 minutes, obtains mixture；
(3) surfactant, water-reducing agent, modified lignin resin sulfonic acid magnesium and work are added in the mixture obtained to step (2)
Industry waste liquid 15%-25% stirs 15 minutes, obtains cement grinding aid.
The preparation method of the modified lignin resin sulfonic acid magnesium includes the following steps：In molar ratio 1:0.8 weighs lignin
Sulfonic acid magnesium and acrylic acid are added deionized water, add the hydrogenperoxide steam generator of 40% mass concentration, reacted 4 hours at 100 DEG C,
Obtain modified lignin resin sulfonic acid magnesium；The mass ratio of the magnesium lignosulfonate and deionized water is 3:4；The sulfomethylated lignin
The mass ratio of sour magnesium and hydrogenperoxide steam generator is 38:1.
Grinding-aid effect contrast test
Using 1-4 of the embodiment of the present invention and comparative example the 1-2 grinding aid being prepared into and commercially available grinding aid (model：GA-100)
It mixes in cement raw material grinding process, each grinding aid is tested, test result is shown in Table 2：
Table 2
As can be seen from Table 2, when incorporation is 0.05%, raising efficiency and enhancing of the embodiment 1-4 with blank control comparison
Rate is apparently higher than the raising efficiency and enhancing rate of comparative example 1-2 and commercially available grinding aid and blank control comparison, it is seen that water of the present invention
Cement grinding aids have the effect of increase significantly mill efficiency and enhancing strength of cement, by comparative example 1-2 and 1 comparative example of embodiment
As it can be seen that when being free of modified lignin resin sulfonic acid magnesium in formula or without zirconia ball, mill efficiency and strength of cement can not show a candle to add
Add cement grinding aid when magnesium lignosulfonate and zirconia ball, it can be seen that, modified lignin resin sulfonic acid magnesium and water-reducing agent association
Same synergy；When incorporation is 0.08%, the raising efficiency of embodiment 1 is 25.12%, and enhancing rate is 9.19%；When incorporation is
The raising efficiency of embodiment 1 is 11.62% when 0.04%, and enhancing rate is 4.36%；Embodiment 1 carries when incorporation is 0.09%
High efficiency is 11.58%, and enhancing rate is 4.13%, and the raising efficiency of embodiment 1 is 28.74% when incorporation is 0.05%, is increased
Strong rate is 12.12%, it can be seen that, cement grinding aid optimal mixing amount of the present invention is 0.05%-0.08%.
Cement grinding is tested：
Cement raw material 5kg and embodiment 1-4 and comparative example 1-2 cement grinding aids are packed into Φ 500mm × 500mm examinations together
It tests and carries out grinding in small mill, cement grinding aid volume is 5kg × 0.05%=0.0025kg, grinding time 30min.
As a comparison, cement grinding aid is not mixed, above-mentioned cement raw material 5kg is packed into Φ 500mm × 500mm test mills
Middle carry out grinding, grinding time 30min.
As a comparison, by above-mentioned cement raw material 5kg and commercially available grinding aid (model commonly used in the art：GA-100 it) fills together
Enter and carry out grinding in Φ 500mm × 500mm test mills, cement grinding aid volume is 5kg × 0.05%=0.00175kg, powder
Consume time 30min.
Test data measures
The cement powder that above-mentioned incorporation fluid present invention grinding aid grinding is gone out respectively；The powder that grinding aid grinding goes out is not mixed
Grind cement powder；And the commercially available grinding aid (model that incorporation is commonly used in the art：GA-100) the cement powder that grinding goes out carries out
45um fineness tails over, specific area measuring.Measurement result is listed in table 3.
Table 3
By table 3 as it can be seen that the 45um fineness screening of embodiment 1-4, specific surface area and intensity are far above comparative example 1-2 and commercially available
Grinding aid, it can be seen that, cement grinding aid of the present invention has excellent grinding effect.
Above example only illustrates embodiment of the present invention, and there is no have limitation in any form to the present invention；Appoint
What is engaged in professional and technical personnel, all has the ability to make some changes or modification using the technology contents disclosed, becomes equivalent
The equivalent embodiment of variation carries out simple modification, equivalent change and modification to the present invention, belongs to according to the technology of the present invention essence
In the range of technical solution of the present invention.
Claims (10)
1. a kind of cement grinding aid, which is characterized in that the cement grinding aid includes that the raw material of following weight percent is made：
Triethanolamine 5%-15%, triisopropanolamine 10%-15%, polyalcohol 20%-30%, surfactant 5%-10%, diminishing
Agent 2%-7%, modified lignin resin sulfonic acid magnesium 3%-10%, industrial wastes 15%-25%, zirconia ball 1%-5%, water surplus,
The zirconia ball grain size is 0.05mm.
2. cement grinding aid according to claim 1, which is characterized in that the cement grinding aid includes following weight hundred
The raw material of ratio is divided to be made：Triethanolamine 10%-13%, triisopropanolamine 10%-13%, polyalcohol 25%-30%, surface-active
Agent 7%-10%, water-reducing agent 4%-7%, modified lignin resin sulfonic acid magnesium 5%-9%, industrial wastes 15%-25%, zirconia ball
2%-4%, water surplus.
3. cement grinding aid according to claim 1, which is characterized in that the cement grinding aid includes following weight hundred
The raw material of ratio is divided to be made：Triethanolamine 10%, triisopropanolamine 10%, polyalcohol 30%, surfactant 8%, water-reducing agent
5%, modified lignin resin sulfonic acid magnesium 8%, industrial wastes 18%, zirconia ball 3%, water surplus.
4. according to claim 1-3 any one of them cement grinding aids, which is characterized in that the polyalcohol be ethylene glycol,
The mixture of any one or more in glycerine, pentaerythrite.
5. according to claim 1-3 any one of them cement grinding aids, which is characterized in that the surfactant is bay
It is arbitrary in base sulfosuccinic acid monoester disodium, Coconut Fatty Acid Monoethanolamide sulfosuccinic acid monoesters disodium and single Tryfac 5573
One or more mixtures.
6. according to claim 1-3 any one of them cement grinding aids, which is characterized in that the water-reducing agent is 2- naphthalene sulfonic acids
It receives, sulfamic acid is received, one kind in calcium lignosulfonate and polycarboxylate water-reducer.
7. according to claim 1-3 any one of them cement grinding aids, which is characterized in that the modified lignin resin sulfonic acid magnesium
Preparation method, include the following steps：In molar ratio 1:0.8 weighs magnesium lignosulfonate and acrylic acid, and deionized water is added, adds
The hydrogenperoxide steam generator of 40% mass concentration reacts 4 hours at 100 DEG C, obtains modified lignin resin sulfonic acid magnesium；Described is wooden
Plain sulfonic acid magnesium and the mass ratio of deionized water are 3:4；The mass ratio of the magnesium lignosulfonate and hydrogenperoxide steam generator is 38:
1。
8. according to claim 1-3 any one of them cement grinding aids, which is characterized in that the industrial wastes is that printing and dyeing are useless
Water or spent acid.
9. according to claim 1-3 any one of them cement grinding aids, which is characterized in that the cement grinding aid is using
In the process, by the 0.05%-0.08% of the finished ground cement raw material weight additions cement grinding aid, cement powder is carried out to cement
Mill.
10. a kind of method preparing any one of claim 1-3 cement grinding aids, includes the following steps：
(1) water is added in a kettle；
(2) addition zirconia ball, triethanolamine, triisopropanolamine into reaction kettle are stirred on one side to stir 30 minutes, are added more
First alcohol stirs 60-90 minutes, obtains mixture；
(3) surfactant, water-reducing agent, modified lignin resin sulfonic acid magnesium and Industry Waste are added in the mixture obtained to step (2)
Liquid 15%-25% stirs 15 minutes, obtains cement grinding aid.
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| CN201810333026.6A CN108328957A (en) | 2018-04-13 | 2018-04-13 | A kind of cement grinding aid |
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| CN201810333026.6A CN108328957A (en) | 2018-04-13 | 2018-04-13 | A kind of cement grinding aid |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109020294A (en) * | 2018-09-28 | 2018-12-18 | 合肥中亚环保科技有限公司 | A kind of novel liquid cement grinding aid and preparation method thereof |
| CN109503018A (en) * | 2018-12-29 | 2019-03-22 | 山东宏艺科技股份有限公司 | A kind of cement grinding aid |
| CN112707751A (en) * | 2021-01-15 | 2021-04-27 | 杭州左纳实业有限公司 | Method for preparing cement floor color paste and cement curing reinforcing agent from dye residual paste and application |
| CN113233810A (en) * | 2021-04-30 | 2021-08-10 | 长沙市神宇建材有限公司 | Preparation method of light sand |
| CN115057637A (en) * | 2022-05-26 | 2022-09-16 | 昌德新材科技股份有限公司 | Cement grinding aid and application thereof |
| CN115819005A (en) * | 2022-11-15 | 2023-03-21 | 安徽海螺材料科技股份有限公司 | Modified alcohol amine efficient cement grinding aid and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006132762A2 (en) * | 2005-06-02 | 2006-12-14 | W.R. Grace & Co.-Conn. | Biomass-derived grinding aids |
| CN102372454A (en) * | 2010-08-16 | 2012-03-14 | 广州基业长青化工有限公司 | Cement grinding aid |
| CN103193407A (en) * | 2012-01-09 | 2013-07-10 | 广州浩方建材有限公司 | Formula and preparation method of composite liquid cement grinding aid |
| CN104058618A (en) * | 2014-07-07 | 2014-09-24 | 秦皇岛市太极环纳米制品有限公司 | Method for preparing nanoscale cement |
| CN104844052A (en) * | 2015-05-27 | 2015-08-19 | 湖州华仑助剂科技有限公司 | Cement composite grinding aid |
| CN105271918A (en) * | 2015-11-06 | 2016-01-27 | 吴金文 | Cement grinding aid and preparation method thereof |
-
2018
- 2018-04-13 CN CN201810333026.6A patent/CN108328957A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006132762A2 (en) * | 2005-06-02 | 2006-12-14 | W.R. Grace & Co.-Conn. | Biomass-derived grinding aids |
| CN102372454A (en) * | 2010-08-16 | 2012-03-14 | 广州基业长青化工有限公司 | Cement grinding aid |
| CN103193407A (en) * | 2012-01-09 | 2013-07-10 | 广州浩方建材有限公司 | Formula and preparation method of composite liquid cement grinding aid |
| CN104058618A (en) * | 2014-07-07 | 2014-09-24 | 秦皇岛市太极环纳米制品有限公司 | Method for preparing nanoscale cement |
| CN104844052A (en) * | 2015-05-27 | 2015-08-19 | 湖州华仑助剂科技有限公司 | Cement composite grinding aid |
| CN105271918A (en) * | 2015-11-06 | 2016-01-27 | 吴金文 | Cement grinding aid and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 广西壮族自治区地方志编纂委员会: "《广西通志 科学技术志》", 31 December 1997, 广西人民出版社 * |
| 潘东: "采用高硬度助磨剂对煤基碳素进行超细粉碎的试验研究", 《煤炭技术》 * |
| 贾陆军: "接枝改性木质素磺酸钙的制备及应用", 《中国造纸学报》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109020294A (en) * | 2018-09-28 | 2018-12-18 | 合肥中亚环保科技有限公司 | A kind of novel liquid cement grinding aid and preparation method thereof |
| CN109503018A (en) * | 2018-12-29 | 2019-03-22 | 山东宏艺科技股份有限公司 | A kind of cement grinding aid |
| CN109503018B (en) * | 2018-12-29 | 2021-07-23 | 临沂海螺新材料科技有限公司 | Cement grinding aid |
| CN112707751A (en) * | 2021-01-15 | 2021-04-27 | 杭州左纳实业有限公司 | Method for preparing cement floor color paste and cement curing reinforcing agent from dye residual paste and application |
| CN113233810A (en) * | 2021-04-30 | 2021-08-10 | 长沙市神宇建材有限公司 | Preparation method of light sand |
| CN115057637A (en) * | 2022-05-26 | 2022-09-16 | 昌德新材科技股份有限公司 | Cement grinding aid and application thereof |
| CN115057637B (en) * | 2022-05-26 | 2024-01-09 | 昌德新材科技股份有限公司 | Cement grinding aid and application thereof |
| CN115819005A (en) * | 2022-11-15 | 2023-03-21 | 安徽海螺材料科技股份有限公司 | Modified alcohol amine efficient cement grinding aid and preparation method thereof |
| CN115819005B (en) * | 2022-11-15 | 2024-02-02 | 安徽海螺材料科技股份有限公司 | Modified alcohol amine efficient cement grinding aid and preparation method thereof |
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Application publication date: 20180727 |