CN111777354B - Composite efficient liquid cement grinding aid and preparation method thereof - Google Patents
Composite efficient liquid cement grinding aid and preparation method thereof Download PDFInfo
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- CN111777354B CN111777354B CN202010529901.5A CN202010529901A CN111777354B CN 111777354 B CN111777354 B CN 111777354B CN 202010529901 A CN202010529901 A CN 202010529901A CN 111777354 B CN111777354 B CN 111777354B
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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
- 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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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a composite high-efficiency liquid cement grinding aid, which consists of a compound liquid 1 and a compound liquid 2; the compound liquid 1 comprises the following components in parts by mass: 6-8 parts of triethanolamine, 2-4 parts of wax emulsion, 2-4 parts of sodium silicate and 20 parts of water; the compound liquid 2 comprises: 2-4 parts of polyether amine, 2-4 parts of water-soluble acrylic resin, 10-20 parts of ethylene glycol, 3-5 parts of polycarboxylic acid and 5-7 parts of molasses.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of building materials, and particularly relates to a composite efficient liquid cement grinding aid and a preparation method thereof.
[ background of the invention ]
The cement is an indispensable building material in national economic development and is also one of the artificial building materials with the largest yield in the world at present. Meanwhile, the per-capita consumption of cement is an important index for measuring whether the country is developed or not, and the cement plays an important role in the development and progress of human civilization. In view of the development of the current state of the art in the world, no building material has been able to replace cement for a short time.
In the process of cement production, the power consumption for preparing raw materials and grinding cement accounts for more than 70% of the total power consumption, and from the development trend of the cement industry grinding technology in recent decades, in order to improve the current grinding condition, a method mainly adopted is to add a cement grinding aid, which can be a liquid grinding aid or a powder grinding aid, into the cement grinding process, wherein most of the powder grinding aids are yield-increasing and reinforcing types, and the mixing amount in the cement production process is generally 0.5-1.0%; the liquid cement grinding aid is divided into a yield-increasing type, a yield-increasing type and an enhanced type, the yield-increasing type mixing amount is 0.01% -0.035%, the yield-increasing type and the enhanced type mixing amount is 0.1% -0.2%, the grinding quality can be obviously improved, and the machine-hour yield of the ball mill can be increased by about 5% -30%. On one hand, the cement grinding aid can improve the output of the ball mill per machine hour, which can reduce the power consumption during grinding; on the other hand, the addition of the cement grinding aid can indirectly save a large amount of electricity and coal consumption caused by cement production, and can greatly reduce the emission of waste gas, the addition amount of the existing cement admixture in China is generally 10% -30%, the range of particle size distribution is optimized by adding the cement grinding aid, so that the performance of each aspect of cement is improved, the addition amount of clinker in the cement production process is reduced by 6% -15%, about 7 million tons of raw materials can be saved every year in the whole country by adding the cement grinding aid, and about 5 million tons of substances such as carbon dioxide, industrial dust, sulfur dioxide and the like which pollute the atmosphere are rarely emitted.
At present, the commonly used liquid grinding aid is triethanolamine which has the effects of increasing yield and enhancing, but the price is high, and the manufacturing cost of cement is increased.
Chinese patent (CN105152570B) discloses a liquid cement grinding aid and a preparation method thereof. The grinding aid consists of raw materials such as a tri-new propanolamine hydrochloride solution, ethylene glycol, polycarboxylic acid, molasses and the like. The preparation method comprises weighing appropriate amount of trinopropanolamine hydrochloride powder, adding water, and stirring thoroughly to dissolve; weighing polycarboxylic acid powder, and adding the polycarboxylic acid powder into the aqueous solution of the trineopropanolamine hydrochloride; proportionally mixing ethylene glycol; and finally, adding molasses according to a proportion, and fully stirring to obtain a uniform liquid cement grinding aid product. The product of the invention has the characteristics of low mixing amount, high efficiency, low cost and the like, and simultaneously, the invention can improve the cement yield and save cement clinker.
[ summary of the invention ]
The invention provides a composite high-efficiency liquid cement grinding aid and a preparation method thereof, the composite high-efficiency liquid cement grinding aid is prepared, and has excellent performance, environmental friendliness, simplicity and convenience and low price.
In order to solve the technical problems, the invention adopts the following technical scheme:
The composite efficient liquid cement grinding aid consists of a compound liquid 1 and a compound liquid 2; the compound liquid 1 comprises the following components in parts by mass: 6-8 parts of triethanolamine, 2-4 parts of wax emulsion, 2-4 parts of sodium silicate and 20 parts of water; the compound liquid 2 comprises: 2-4 parts of polyether amine, 2-4 parts of water-soluble acrylic resin, 10-20 parts of ethylene glycol, 3-5 parts of polycarboxylic acid and 5-7 parts of molasses.
Further, the ratio of the compound liquid 1 to the compound liquid 2 is 2.4-2.8: 1.
Further, the composite efficient liquid cement grinding aid comprises the following components in parts by mass: 7 parts of triethanolamine, 3 parts of wax emulsion, 3 parts of sodium silicate and 20 parts of water; the compound liquid 2 comprises: 3 parts of polyetheramine, 3 parts of water-soluble acrylic resin, 15 parts of ethylene glycol, 4 parts of polycarboxylic acid and 6 parts of molasses.
Further, the wax emulsion is at least one of polyethylene wax emulsion and carnauba wax emulsion.
Further, the polyether amine is amino-terminated polyoxyethylene ether with the molecular weight of 200-300.
Further, the polycarboxylic acid is a tricarboxylic polycarboxylic acid.
The preparation method of the composite high-efficiency liquid cement grinding aid comprises the following steps:
(1) stirring 6-8 parts of triethanolamine, 2-4 parts of wax emulsion, 2-4 parts of sodium silicate and 20 parts of water in a high-speed homogenizer for 5-10 minutes to obtain a compound liquid 1;
(2) 2-4 parts of polyetheramine, 2-4 parts of water-soluble acrylic resin, 10-20 parts of glycol, 3-5 parts of polycarboxylic acid and 5-7 parts of molasses, and uniformly mixing and ultrasonically dispersing to obtain a compound liquid 2;
(3) and (3) dropwise adding the compound liquid 2 into the compound liquid 1, quickly stirring while dropwise adding, and continuously dispersing for 10min after dropwise adding.
The composite high-efficiency liquid cement grinding aid disclosed by the invention has the advantages that the dosage of triethanolamine is greatly reduced, meanwhile, the dosage of the cement grinding aid can be reduced, and the cement grinding effect is improved. Specifically, the wax emulsion and the sodium silicate are added into the triethanolamine to form the compound liquid 1, then the polyether amine is added into the compound liquid 2, and the three are matched to form a specific synergistic effect in the grinding process, so that the technical effect is improved. Compared with the prior art, the trineopropanolamine hydrochloride is slightly lower than triethanolamine in price, but the preparation process is complex, so that the content of chloride ions in the cement exceeds the standard, and the performance of the cement is influenced.
[ detailed description ] A
In order to facilitate a better understanding of the invention, the following examples are given to illustrate, but not to limit the scope of the invention.
The composite efficient liquid cement grinding aid consists of a compound liquid 1 and a compound liquid 2; the compound liquid 1 comprises the following components in parts by mass: 6-8 parts of triethanolamine, 2-4 parts of wax emulsion, 2-4 parts of sodium silicate and 20 parts of water; the compound liquid 2 comprises: 2-4 parts of polyether amine, 2-4 parts of water-soluble acrylic resin, 10-20 parts of ethylene glycol, 3-5 parts of polycarboxylic acid and 5-7 parts of molasses.
The ratio of the compound liquid 1 to the compound liquid 2 is 2.4-2.8: 1.
The wax emulsion is at least one of polyethylene wax emulsion and carnauba wax emulsion.
The polyether amine is amino-terminated polyoxyethylene ether with the molecular weight of 200-300.
The polycarboxylic acid is a tricarboxylic polycarboxylic acid.
The preparation method of the composite high-efficiency liquid cement grinding aid comprises the following steps:
(1) stirring 6-8 parts of triethanolamine, 2-4 parts of wax emulsion, 2-4 parts of sodium silicate and 20 parts of water in a high-speed homogenizer for 5-10 minutes to obtain a compound liquid 1;
(2) 2-4 parts of polyetheramine, 2-4 parts of water-soluble acrylic resin, 10-20 parts of ethylene glycol, 3-5 parts of polycarboxylic acid and 5-7 parts of molasses, uniformly mixing, and performing ultrasonic dispersion to obtain a compound liquid 2;
(3) And (3) dropwise adding the compound liquid 2 into the compound liquid 1, quickly stirring while dropwise adding, and continuously dispersing for 10min after dropwise adding.
Example 1
The composite high-efficiency liquid cement grinding aid comprises the following components in parts by mass: 7 parts of triethanolamine, 3 parts of wax emulsion, 3 parts of sodium silicate and 20 parts of water; the compound liquid 2 comprises: 3 parts of polyetheramine, 3 parts of water-soluble acrylic resin, 15 parts of ethylene glycol, 4 parts of polycarboxylic acid and 6 parts of molasses.
The ratio of the compound liquid 1 to the compound liquid 2 is 2.6: 1.
The wax emulsion is a polyethylene wax emulsion.
The polyether amine is amino-terminated polyoxyethylene ether with the molecular weight of 200-300.
The polycarboxylic acid is a tricarboxylic polycarboxylic acid.
The preparation method of the composite high-efficiency liquid cement grinding aid comprises the following steps:
(1) stirring triethanolamine, wax emulsion, sodium silicate and water in a high-speed homogenizer for 7.5 minutes to obtain a compound liquid 1;
(2) polyether amine, water-soluble acrylic resin, ethylene glycol, polycarboxylic acid and molasses are uniformly mixed and subjected to ultrasonic dispersion to obtain a compound liquid 2;
(3) and (3) dropwise adding the compound liquid 2 into the compound liquid 1, quickly stirring while dropwise adding, and continuously dispersing for 10min after dropwise adding.
Example 2
The composite efficient liquid cement grinding aid consists of a compound liquid 1 and a compound liquid 2; the compound liquid 1 comprises the following components in parts by mass: 6 parts of triethanolamine, 4 parts of wax emulsion, 2 parts of sodium silicate and 20 parts of water; the compound liquid 2 comprises: 4 parts of polyetheramine, 2 parts of water-soluble acrylic resin, 20 parts of ethylene glycol, 3 parts of polycarboxylic acid and 7 parts of molasses.
The ratio of the compound liquid 1 to the compound liquid 2 is 2.4: 1.
The rest is the same as in example 1.
Example 3
A composite high-efficiency liquid cement grinding aid is composed of a compound liquid 1 and a compound liquid 2; the compound liquid 1 comprises the following components in parts by mass: 8 parts of triethanolamine, 2 parts of wax emulsion, 4 parts of sodium silicate and 20 parts of water; the compound liquid 2 comprises: 2 parts of polyether amine, 4 parts of water-soluble acrylic resin, 10 parts of ethylene glycol, 5 parts of polycarboxylic acid and 5 parts of molasses.
The ratio of the compound liquid 1 to the compound liquid 2 is 2.8: 1.
The rest is the same as in example 1.
Comparative example 1
The procedure of example 1 was essentially the same except that the raw materials for making the composite high efficiency liquid cement grinding aid were devoid of wax emulsion.
Comparative example 2
The procedure of example 1 was essentially the same except that the raw materials used to prepare the composite high efficiency liquid cement grinding aid lacked sodium silicate.
Comparative example 3
The preparation process was essentially the same as that of example 1, except that the raw materials for preparing the composite high efficiency liquid cement grinding aid were absent of polyetheramine.
Comparative example 4
The preparation process is basically the same as that of the preparation process in the example 1, except that the wax emulsion, the sodium silicate and the polyether amine are not added into the raw materials for preparing the composite high-efficiency liquid cement grinding aid.
Comparative example 5
The preparation process was substantially the same as that of example 1, except that no wax emulsion and sodium silicate were added to the raw materials for preparing the composite high efficiency liquid cement grinding aid.
Comparative example 6
Grinding aids were prepared according to the procedure of CN105152570B example 1.
The comparative example and the product of the example of the invention adopt the same batch of cement clinker, are ground in a test mill with the diameter of 500mm multiplied by 500mm for 20min, the content of particles with the diameter of more than 60um is measured, if the content is less than 10 percent, the product is qualified, the usage amount of the grinding aid is gradually reduced, the minimum qualified mixing amount of the product is recorded, in addition, the flexural strength and the compressive strength of 28d strength are measured, and the measurement results are shown in the following table.
The composite high-efficiency liquid cement grinding aid disclosed by the invention has the advantages that the dosage of triethanolamine is greatly reduced, meanwhile, the dosage of the cement grinding aid can be reduced, and the cement grinding effect is improved. Specifically, the wax emulsion and the sodium silicate are added into the triethanolamine to form the compound liquid 1, then the polyether amine is added into the compound liquid 2, and the three are matched to form a specific synergistic effect in the grinding process, so that the technical effect is improved. Compared with the prior art, the trineopropanolamine hydrochloride is slightly lower than triethanolamine in price, but the preparation process is complex, so that the content of chloride ions in the cement exceeds the standard, and the performance of the cement is influenced.
The above description should not be taken as limiting the invention to the particular embodiments described herein, but rather as providing the skilled person with the ability to make numerous simplifications or substitutions without departing from the spirit of the invention, which should be construed in part as broadly as the invention is defined by the appended claims.
Claims (1)
1. A preparation method of a composite high-efficiency liquid cement grinding aid comprises the following steps of (1) preparing a compound liquid and (2) preparing the compound liquid; the ratio of the compound liquid 1 to the compound liquid 2 is 2.4-2.8: 1; it is characterized in that: the method comprises the following steps:
step 1: preparation of compound liquid 1: stirring 7 parts of triethanolamine, 3 parts of wax emulsion, 3 parts of sodium silicate and 20 parts of water in a high-speed homogenizer for 5-10 minutes;
step 2: preparation of compound liquid 2: 2-4 parts of polyetheramine, 2-4 parts of water-soluble acrylic resin, 10-20 parts of ethylene glycol, 3-5 parts of polycarboxylic acid and 5-7 parts of molasses, uniformly mixing, and performing ultrasonic dispersion;
and step 3: slowly dripping the compound liquid 2 into the compound liquid 1, quickly stirring while dripping, and continuously dispersing for 10min after dripping is finished;
the wax emulsion is at least one of polyethylene wax emulsion and carnauba wax emulsion; the polyether amine is amino-terminated polyoxyethylene ether with the molecular weight of 200-300; the polycarboxylic acid is a tricarboxylic polycarboxylic acid.
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| CN202010529901.5A CN111777354B (en) | 2020-06-11 | 2020-06-11 | Composite efficient liquid cement grinding aid and preparation method thereof |
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| CN111777354B true CN111777354B (en) | 2022-06-28 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT297196B (en) * | 1966-08-05 | 1972-03-10 | British Petroleum Co | Process for the preparation of a lubricating oil composition |
| CN105152570A (en) * | 2015-10-12 | 2015-12-16 | 沈阳建筑大学 | Liquid cement grinding aid and preparation method thereof |
| CN110804167A (en) * | 2019-11-25 | 2020-02-18 | 江苏金木土新材料有限公司 | Preparation method of cement grinding aid |
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2020
- 2020-06-11 CN CN202010529901.5A patent/CN111777354B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT297196B (en) * | 1966-08-05 | 1972-03-10 | British Petroleum Co | Process for the preparation of a lubricating oil composition |
| CN105152570A (en) * | 2015-10-12 | 2015-12-16 | 沈阳建筑大学 | Liquid cement grinding aid and preparation method thereof |
| CN110804167A (en) * | 2019-11-25 | 2020-02-18 | 江苏金木土新材料有限公司 | Preparation method of cement grinding aid |
Non-Patent Citations (1)
| Title |
|---|
| 聚醚复合水泥助磨剂的研究及应用;李绍宽等;《中国水泥》;20141201(第12期);第89-90页 * |
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