CN111393061A - Cement grinding aid and preparation method thereof - Google Patents
Cement grinding aid and preparation method thereof Download PDFInfo
- Publication number
- CN111393061A CN111393061A CN202010199569.0A CN202010199569A CN111393061A CN 111393061 A CN111393061 A CN 111393061A CN 202010199569 A CN202010199569 A CN 202010199569A CN 111393061 A CN111393061 A CN 111393061A
- Authority
- CN
- China
- Prior art keywords
- parts
- grinding aid
- cement
- cement grinding
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- 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
Landscapes
- 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 relates to the technical field of building materials, in particular to a cement grinding aid and a preparation method thereof. The coating comprises the following components in parts by weight: 10-15 parts of triethanolamine, 21-32 parts of alcohol compounds, 10-15 parts of diethanol monoisopropanolamine, 8-10 parts of triisopropanolamine, 3-5 parts of calcium formate and 4-6 parts of sodium sulfate. According to the invention, the cement grinding aid is prepared by using triethanolamine, alcohol compounds, diethanol monoisopropanolamine, triisopropanolamine, calcium formate and sodium sulfate, the prepared cement grinding aid has stable quality, the particle gradation of cement can be improved, the fineness and the specific surface area of a cement product are improved, the grinding effect is improved, the energy utilization rate is improved, and the early strength and the later strength can be greatly improved.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a cement grinding aid and a preparation method thereof.
Background
The common concrete has the advantages of rich raw materials, low cost, high strength, good durability, strong plasticity, reinforcement by reinforcing steel bars and the like, so that the common concrete becomes a building material with the largest usage in the world, and the main component of the common concrete, namely cement, also becomes the most important building material in recent times.
The production process of cement comprises three parts of grinding of raw materials, firing of clinker and grinding of cement. The grinding of cement is a process of grinding a mixture of clinker and a mixture in a certain proportion. The process is mainly carried out in a ball mill and is completed by the impact of mutual collision, extrusion and friction of materials and grinding bodies in the ball mill. Because a large amount of static electricity is generated in the process, the grinding bodies such as ball forgings and the like and the powder are in a strong static environment, so that the powder bodies and the powder bodies are mutually adsorbed and bonded to form cushion layer impact force for buffering collision, extrusion and friction, the acting force for continuously crushing the powder bodies is weakened, and energy is wasted; meanwhile, with the continuous grinding, the material becomes thin continuously, the specific surface area is increased continuously, the interfacial tension is increased, the stress required by the material fracture is increased continuously, and the balance is achieved, so that the crack on the particle has the tendency of healing again. For these reasons, some fine powder cannot be discharged from the mill along with wind in time to occupy the space in the mill, and becomes a buffer cushion layer, which further wastes the energy of the motor, so that the energy consumed by the mill is not used for producing a new surface in a large ratio, but is converted into heat, which further aggravates the environment in the mill, and thus a serious ball-wrapping and ball-wrapping forging phenomenon, namely an over-grinding phenomenon generally known in the industry, occurs. This phenomenon causes a great deal of energy waste, and more than 80% of the energy is dissipated in the form of heat energy, and at the same time, the grinding efficiency is greatly reduced.
In order to improve the grinding condition, a cement grinding aid is generally added during the grinding process. The cement grinding aid is an additive which is added during the grinding of cement powder and has the function of grinding aid without damaging the performance of the cement. The grinding aid is added into the grinding machine, so that the grinding process can be obviously improved, and the machine-hour output of the cement grinding machine is increased. However, the existing cement grinding aids still have many problems in the using process, such as unstable quality of the grinding aids and large mixing amount, thereby causing fluctuation of cement quality, insufficient cement strength and the like. In view of the above problems, the present invention is directed to provide a cement grinding aid which has stable quality, can improve the particle composition of cement, and can greatly improve the early and late strengths.
Disclosure of Invention
In order to solve the problems, the first aspect of the invention provides a cement grinding aid, which comprises the following components in parts by weight: 10-15 parts of triethanolamine, 21-32 parts of alcohol compounds, 10-15 parts of diethanol monoisopropanolamine, 8-10 parts of triisopropanolamine, 3-5 parts of calcium formate and 4-6 parts of sodium sulfate.
As a preferable technical scheme, the paint comprises the following components in parts by weight: 12 parts of triethanolamine, 26 parts of alcohol compounds, 12 parts of diethanol monoisopropanolamine, 9 parts of triisopropanolamine, 4 parts of calcium formate and 5 parts of sodium sulfate.
As a preferred technical scheme, the cement grinding aid also comprises 20 to 40 weight parts of water.
As a preferred technical scheme, the cement grinding aid also comprises 32 parts by weight of water.
As a preferable technical scheme, the alcohol compound is monohydric alcohol and/or polyhydric alcohol.
In a preferred embodiment, the polyol in the alcohol compound is at least one selected from the group consisting of ethylene glycol, propylene glycol, butylene glycol, cyclopentanediol, glycerol, sorbitol, pentaerythritol, and polymeric polyols.
In a preferred embodiment, the alcohol compound comprises 3 to 8 parts by weight of propylene glycol, 8 to 12 parts by weight of glycerin, and 10 to 12 parts by weight of a polymeric polyol.
In a preferred embodiment, the alcohol compound contains 5 parts by weight of propylene glycol, 10 parts by weight of glycerin, and 11 parts by weight of a polymeric polyol.
The invention provides a preparation method of a cement grinding aid, which comprises the following steps: mixing polymeric polyol, glycerol, calcium formate and sodium sulfate, adding triethanolamine and diethanol monoisopropanolamine, standing for 10-15min, adding propylene glycol and triisopropanolamine, standing for 10-15min, adding water, mixing and stirring to obtain the product.
Has the advantages that: according to the invention, the cement grinding aid is prepared by using triethanolamine, alcohol compounds, diethanol monoisopropanolamine, triisopropanolamine, calcium formate and sodium sulfate, the prepared cement grinding aid has stable quality, the particle gradation of cement can be improved, the fineness and the specific surface area of a cement product are improved, the grinding effect is improved, the energy utilization rate is improved, and the early strength and the later strength can be greatly improved.
Detailed Description
The technical features in the technical solutions provided by the present invention are further clearly and completely described below with reference to the specific embodiments, but the scope of protection of the present invention is not limited thereto.
"preferred", "more preferred", and the like, in the present invention, refer to embodiments of the invention that may provide certain benefits, under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.
The invention provides a cement grinding aid, which comprises the following components in parts by weight: 10-15 parts of triethanolamine, 21-32 parts of alcohol compounds, 10-15 parts of diethanol monoisopropanolamine, 8-10 parts of triisopropanolamine, 3-5 parts of calcium formate and 4-6 parts of sodium sulfate.
In a preferred embodiment, the composition comprises the following components in parts by weight: 12 parts of triethanolamine, 26 parts of alcohol compounds, 12 parts of diethanol monoisopropanolamine, 9 parts of triisopropanolamine, 4 parts of calcium formate and 5 parts of sodium sulfate.
The applicant finds that when triethanolamine, an alcohol compound, diethanol monoisopropanolamine, triisopropanolamine, calcium formate and sodium sulfate are used together to prepare the cement grinding aid, a good grinding aid effect can be ensured, and particularly, the yield can be increased by 15-20% by adopting the compound of propylene glycol, glycerol and polymeric polyol as the alcohol compound. The propylene glycol, the glycerol, the polymeric polyol and triethanolamine, diethanol monoisopropanolamine, triisopropanolamine, calcium formate and sodium sulfate in the system have good synergistic effect, and the propylene glycol, the glycerol, the polymeric polyol and the like in the system can be adsorbed on the surfaces of cement particles, so that the surface free energy of the surfaces of the cement particles is reduced, the surface hardness and strength of materials are reduced, and the material particles are fragile and easy to grind, and the crushing of the materials is facilitated; meanwhile, propylene glycol, glycerol, polymeric polyol and the like in the system can provide free ions or unsaturated electrovalence bonds in molecules and on the section, so that the tendency of section coincidence can be reduced, the aggregation and adhesion of powder particles are eliminated or weakened, more power for grinding is used for continuously grinding the powder, the powder particles are finer, the fineness and the specific surface area of a cement product can be greatly improved, the grinding aiding effect is improved, and the output per hour is greatly improved.
In a preferred embodiment, the cement grinding aid further comprises 20 to 40 parts by weight of water.
In a more preferred embodiment, the cement grinding aid further comprises 32 parts by weight of water.
In a preferred embodiment, the alcohol compound is a monohydric alcohol and/or a polyhydric alcohol.
In a more preferred embodiment, the alcohol compound is a polyol.
In a preferred embodiment, the polyol is selected from at least one of ethylene glycol, propylene glycol, butylene glycol, cyclopentanediol, glycerol, sorbitol, pentaerythritol, polymeric polyols.
In a more preferred embodiment, the polyol is propylene glycol, glycerin, polymeric polyol.
In a preferred embodiment, the alcohol compound contains 3 to 8 parts by weight of propylene glycol, 8 to 12 parts by weight of glycerin, and 10 to 12 parts by weight of polymeric polyol.
In a more preferred embodiment, the alcohol compound contains 5 parts by weight of propylene glycol, 10 parts by weight of glycerin, and 11 parts by weight of a polymeric polyol.
The CAS number of the diethanolisopropanolamine is 6712-98-7.
The polymeric polyol is purchased from Jiangyu oil & fat Co., Ltd, Nanjing.
The triethanolamine is very polar, the nitrogen atom of the triethanolamine has lone pair electrons, the aqueous solution is alkaline, and the triethanolamine can chelate metal ions in the cement and mineral substances to interact, so that the early strength of the cement can be quickly improved, but the later strength is reduced.
The applicant unexpectedly finds that when propylene glycol, glycerol and polymeric polyol are compounded to be used as an alcohol compound to prepare the cement grinding aid, and simultaneously, diethanol monoisopropanolamine, triisopropanolamine and the like in a synergistic system have good compatibility with the propylene glycol, the glycerol and the polymeric polyol, the diethanol monoisopropanolamine, the triisopropanolamine and the like, and particularly for Portland cement, the early strength of the Portland cement can be improved, and the later strength of the Portland cement can also be improved. This is probably because the introduction of propylene glycol, glycerin, polymeric polyol, etc. improves the surface activity of triethanolamine and promotes hydration, thereby enabling to improve the early strength and the later strength of cement mortar.
The invention provides a preparation method of a cement grinding aid, which comprises the following steps: mixing polymeric polyol, glycerol, calcium formate and sodium sulfate, adding triethanolamine and diethanol monoisopropanolamine, standing for 10-15min, adding propylene glycol and triisopropanolamine, standing for 10-15min, adding water, mixing and stirring to obtain the product.
In a preferred embodiment, the preparation method of the cement grinding aid comprises the following steps: mixing polymeric polyol, glycerol, calcium formate and sodium sulfate, adding triethanolamine and diethanol monoisopropanolamine, standing for 12min, adding propylene glycol and triisopropanolamine, standing for 12min, adding water, mixing and stirring to obtain the product.
Hereinafter, the present invention will be described in more detail by way of examples, but it should be understood that these examples are merely illustrative and not restrictive. In addition, all the raw materials are commercially available if not particularly limited.
Examples
Example 1
The embodiment 1 of the invention provides a cement grinding aid, which comprises the following components in parts by weight: 12 parts of triethanolamine, 5 parts of propylene glycol, 10 parts of glycerol, 11 parts of polymeric polyol, 12 parts of diethanolisopropanolamine, 9 parts of triisopropanolamine, 4 parts of calcium formate, 5 parts of sodium sulfate and 32 parts of water.
The preparation method of the cement grinding aid comprises the following steps: mixing polymeric polyol, glycerol, calcium formate and sodium sulfate, adding triethanolamine and diethanol monoisopropanolamine, standing for 12min, adding propylene glycol and triisopropanolamine, standing for 12min, adding water, mixing and stirring to obtain the product.
Example 2
The embodiment 2 of the invention provides a cement grinding aid, which comprises the following components in parts by weight: 10 parts of triethanolamine, 3 parts of propylene glycol, 8 parts of glycerol, 10 parts of polymeric polyol, 10 parts of diethanol monoisopropanolamine, 8 parts of triisopropanolamine, 3 parts of calcium formate, 4 parts of sodium sulfate and 20 parts of water.
The preparation method of the cement grinding aid comprises the following steps: mixing polymeric polyol, glycerol, calcium formate and sodium sulfate, adding triethanolamine and diethanol monoisopropanolamine, standing for 12min, adding propylene glycol and triisopropanolamine, standing for 12min, adding water, mixing and stirring to obtain the product.
Example 3
The embodiment 3 of the invention provides a cement grinding aid, which comprises the following components in parts by weight: 15 parts of triethanolamine, 8 parts of propylene glycol, 12 parts of glycerol, 12 parts of polymeric polyol, 15 parts of diethanolisopropanolamine, 10 parts of triisopropanolamine, 5 parts of calcium formate, 6 parts of sodium sulfate and 40 parts of water.
The preparation method of the cement grinding aid comprises the following steps: mixing polymeric polyol, glycerol, calcium formate and sodium sulfate, adding triethanolamine and diethanol monoisopropanolamine, standing for 12min, adding propylene glycol and triisopropanolamine, standing for 12min, adding water, mixing and stirring to obtain the product.
Example 4
The embodiment 4 of the invention provides a cement grinding aid and a preparation method thereof, and the concrete implementation manner of the cement grinding aid is the same as that of the embodiment 1, except that the contents of propylene glycol, glycerol and polymeric polyol are respectively replaced by 0 part.
Example 5
The embodiment 5 of the invention provides a cement grinding aid and a preparation method thereof, and the concrete implementation mode of the cement grinding aid is the same as that of the embodiment 1, except that the contents of glycerol and polymeric polyol are respectively replaced by 0 part.
Example 6
The embodiment 6 of the invention provides a cement grinding aid and a preparation method thereof, and the concrete implementation mode of the cement grinding aid is the same as that of the embodiment 1, except that the contents of propylene glycol and polymeric polyol are respectively replaced by 0 part.
Example 7
The embodiment 7 of the invention provides a cement grinding aid and a preparation method thereof, and the concrete implementation mode of the cement grinding aid is the same as that of the embodiment 1, except that the contents of propylene glycol and glycerol are respectively replaced by 0 part.
Example 8
The embodiment 8 of the invention provides a cement grinding aid and a preparation method thereof, and the concrete implementation mode of the cement grinding aid is the same as that of the embodiment 1, except that the content of the polymeric polyol is replaced by 0 part.
Example 9
The embodiment 9 of the invention provides a cement grinding aid and a preparation method thereof, and the concrete implementation mode of the cement grinding aid is the same as that of the embodiment 1, except that the content of glycerol is replaced by 0 part.
Example 10
The embodiment 10 of the invention provides a cement grinding aid and a preparation method thereof, and the concrete implementation mode of the cement grinding aid is the same as that of the embodiment 1, except that the content of propylene glycol is replaced by 0 part.
Example 11
The embodiment 11 of the invention provides a cement grinding aid and a preparation method thereof, and the concrete implementation mode of the cement grinding aid is the same as that of the embodiment 1, except that the content of triethanolamine is replaced by 20 parts.
Performance evaluation
The portland cement was mixed with the cement grinding aids prepared in examples 1 to 11, respectively, and then ground, the amount of the cement grinding aid added was 0.02% by mass of the portland cement, and after 30min of grinding, the performance of the ground cement powders was measured, respectively.
1. Cement particle size test
(1) Determination of specific surface area
The specific surface area of the cement powder ground by the cement grinding aid powder prepared in the example 1 is tested according to GB/T8074-2008.
(2) Sieve analysis of 45 μm fineness
And respectively carrying out 45-micron fineness screen analysis on the cement powder ground by the cement grinding aid powder prepared in the doping example 1 according to GB/T1345-2005.
The results are shown in Table 1.
TABLE 1 Cement granulometry test results
| Specific surface area (m)2/kg) | 45 μm fineness screen (%) | |
| Blank space | 390 | 13 |
| Example 1 | 420 | 9.0 |
2. Test for setting time and stability of standard consistency
The standard consistency setting time and the stability of the cement powder ground by the cement grinding aid powder prepared in the embodiment 1 are respectively tested according to GB/T1346-2011.
The results are shown in Table 2.
TABLE 2 results of the standard consistency setting time and stability test
3. Testing fluidity and strength of mortar
(1) Fluidity of mortar
The mortar fluidity of the cement powder ground by the cement grinding aid powder prepared in the example 1 was tested according to GB/T2419-2005 respectively.
The results are shown in Table 3.
TABLE 3 mortar fluidity test results
| Fluidity of mortar (mm) | |
| Blank space | 193 |
| Example 1 | 208 |
(2) Strength of mortar
The cement powders milled from the cement grinding aid powders prepared in the examples 1-4 were tested for mortar strength according to GB/T17671-1999, respectively.
The results are shown in Table 4.
TABLE 4 mortar Strength test results
4. Grading test of cement particles
The particle size distribution of the cement powder ground by the cement grinding aid powder prepared in the example 1 is respectively tested by using an L S909E laser particle size analyzer.
The results are shown in Table 5.
TABLE 5 Cement granulometric composition test results
5. Mill stand hour yield test
And respectively putting the portland cement without the cement grinding aid and the portland cement with the cement grinding aid prepared in the examples 1-11 into a grinding machine for grinding, testing the machine hour yield of the portland cement, and recording the improvement rate of the machine hour yield. The mixing amount of the cement grinding aid is 0.02 percent of the mass of the Portland cement. And (4) judging the standard: the yield per machine hour is improved by 15 to 20 percent; the yield of the medium-machine hour is improved by 10 to 15 percent; the yield of the product is improved by 5 to 10 percent in the poor-machine-hour.
The results are shown in Table 6.
TABLE 6 bench-hour output of mill experimental results
Experimental results show that the cement grinding aid prepared by the method has stable quality, can improve the particle gradation of cement, improves the fineness and the specific surface area of a cement product, and can greatly improve the early strength and the later strength. In addition, after the cement grinding aid prepared by the method is added, the machine-hour yield is greatly improved, and the yield can be increased by 15-20%.
The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. The use of some numerical ranges in the claims also includes sub-ranges within their range, and variations in these ranges are also to be construed as being covered by the appended claims where possible.
Claims (9)
1. The cement grinding aid is characterized by comprising the following components in parts by weight: 10-15 parts of triethanolamine, 21-32 parts of alcohol compounds, 10-15 parts of diethanol monoisopropanolamine, 8-10 parts of triisopropanolamine, 3-5 parts of calcium formate and 4-6 parts of sodium sulfate.
2. The cement grinding aid of claim 1, comprising the following ingredients in parts by weight: 12 parts of triethanolamine, 26 parts of alcohol compounds, 12 parts of diethanol monoisopropanolamine, 9 parts of triisopropanolamine, 4 parts of calcium formate and 5 parts of sodium sulfate.
3. The cement grinding aid of claim 1 or 2, further comprising 20 to 40 parts by weight of water.
4. The cement grinding aid of claim 3, further comprising 32 parts by weight water.
5. The cement grinding aid of claim 3, wherein the alcohol compound is a monohydric alcohol and/or a polyhydric alcohol.
6. The cement grinding aid of claim 5, wherein the alcohol compound comprises at least one polyol selected from the group consisting of ethylene glycol, propylene glycol, butylene glycol, cyclopentanediol, glycerol, sorbitol, pentaerythritol, and polymeric polyols.
7. The cement grinding aid according to claim 6, wherein the alcohol compound comprises 3 to 8 parts by weight of propylene glycol, 8 to 12 parts by weight of glycerol, and 10 to 12 parts by weight of polymeric polyol.
8. The cement grinding aid according to claim 7, wherein the alcohol compound comprises 5 parts by weight of propylene glycol, 10 parts by weight of glycerol and 11 parts by weight of polymeric polyol.
9. A method for preparing a cement grinding aid as claimed in any one of claims 6 to 8, comprising the steps of: mixing polymeric polyol, glycerol, calcium formate and sodium sulfate, adding triethanolamine and diethanol monoisopropanolamine, standing for 10-15min, adding propylene glycol and triisopropanolamine, standing for 10-15min, adding water, mixing and stirring to obtain the product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199569.0A CN111393061A (en) | 2020-03-20 | 2020-03-20 | Cement grinding aid and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199569.0A CN111393061A (en) | 2020-03-20 | 2020-03-20 | Cement grinding aid and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111393061A true CN111393061A (en) | 2020-07-10 |
Family
ID=71424752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010199569.0A Withdrawn CN111393061A (en) | 2020-03-20 | 2020-03-20 | Cement grinding aid and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111393061A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112876125A (en) * | 2021-03-26 | 2021-06-01 | 唐山冀东水泥外加剂有限责任公司 | Cement grinding aid and high early strength cement using same |
| CN113185183A (en) * | 2021-06-11 | 2021-07-30 | 赵佳男 | Cement mineralizer and preparation method thereof |
| CN114763294A (en) * | 2021-05-31 | 2022-07-19 | 辽宁天宝华瑞建材有限公司 | Raw material vertical grinding aid and preparation method thereof |
| CN114940595A (en) * | 2022-04-27 | 2022-08-26 | 北京金隅水泥节能科技有限公司 | Cement grinding aid, preparation method thereof and cement using grinding aid |
-
2020
- 2020-03-20 CN CN202010199569.0A patent/CN111393061A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112876125A (en) * | 2021-03-26 | 2021-06-01 | 唐山冀东水泥外加剂有限责任公司 | Cement grinding aid and high early strength cement using same |
| CN114763294A (en) * | 2021-05-31 | 2022-07-19 | 辽宁天宝华瑞建材有限公司 | Raw material vertical grinding aid and preparation method thereof |
| CN114763294B (en) * | 2021-05-31 | 2023-03-14 | 辽宁天宝华瑞建材有限公司 | Raw material vertical grinding aid and preparation method thereof |
| CN113185183A (en) * | 2021-06-11 | 2021-07-30 | 赵佳男 | Cement mineralizer and preparation method thereof |
| CN114940595A (en) * | 2022-04-27 | 2022-08-26 | 北京金隅水泥节能科技有限公司 | Cement grinding aid, preparation method thereof and cement using grinding aid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111393061A (en) | Cement grinding aid and preparation method thereof | |
| JP4796770B2 (en) | Amine-containing cement processing additive | |
| CN104271529A (en) | Grinding additive for mineral binders | |
| JPH10504514A (en) | Improved grinding aid composition and cement product | |
| JP2015520723A (en) | Method for producing hydraulic binder, corresponding additive and use thereof | |
| CN113185183A (en) | Cement mineralizer and preparation method thereof | |
| CN113135688B (en) | Active grinding aid for grinding steel slag by vertical mill | |
| EP0792849B1 (en) | Limestone filled Portland cements | |
| CN111268934A (en) | Modified production preparation method of composite mineral admixture | |
| CN102815898B (en) | Superfine slag powder concrete and preparation method thereof | |
| CN107200501A (en) | additive and its application in cement or concrete | |
| CN112341026A (en) | Copper tailings modifier and preparation method and application thereof | |
| JP2019131433A (en) | Method for producing cement composition | |
| EP2085366A2 (en) | Method for producing hydraulic binding agent in a form of activated fly ash, activated fly ash, hydraulic binding agent, sulfur or cement concrete, mineral-asphalt mixture and application of the activated fly ash | |
| CN115432951A (en) | Preparation method of mineral admixture for commercial concrete | |
| CN111944483B (en) | Coal grinding aid and preparation method and application thereof | |
| CN113929331A (en) | Modified limestone powder, cementing material and preparation method | |
| JP6497864B2 (en) | Ground improvement composition and method for producing ground improvement composition | |
| CN113416011A (en) | Mineralized material used in cement grinding process | |
| CN113816630A (en) | Cement grinding aid and preparation method and application thereof | |
| CN113562991A (en) | Superfine iron-based carbon-free cementing material and preparation method and application thereof | |
| CN113135696A (en) | Large-dosage steel slag solid waste water hydraulic ecological frame concrete and proportioning determination method thereof | |
| CN112408910A (en) | Environment-friendly recycled concrete and preparation method thereof | |
| KR101338794B1 (en) | Composition for Grinding of Mineral Containing Sodium Silicate Hydrate | |
| JPH0769694A (en) | Mixing material for cement and cement composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200710 |
|
| WW01 | Invention patent application withdrawn after publication |