CN110330253B - Grinding aid formula - Google Patents
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- CN110330253B CN110330253B CN201910680817.0A CN201910680817A CN110330253B CN 110330253 B CN110330253 B CN 110330253B CN 201910680817 A CN201910680817 A CN 201910680817A CN 110330253 B CN110330253 B CN 110330253B
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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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Abstract
The invention relates to the technical field of cement additives, in particular to a grinding aid formula. The formula of the grinding aid is prepared from raw materials such as ethylene glycol, glycerol, neopentyl glycol, triethanolamine, dimethylacetamide and water. The grinding aid formula disclosed by the invention utilizes a large amount of industrial waste as a raw material, is low in mixing amount, greatly reduces the production cost, has a good using effect, can obviously increase the strength of a cement product, improves the fineness and the specific surface area of cement powder, optimizes the particle grading, improves the fluidity, durability, compatibility and adaptability of cement, improves the cement grinding efficiency, and reduces the grinding energy consumption and equipment abrasion.
Description
Technical Field
The invention relates to the technical field of cement additives, in particular to a grinding aid formula.
Background
The cement grinding aid is a chemical additive for improving the grinding effect and performance of cement. In the grinding process of cement clinker, a small amount of cement grinding aid is added, so that the grindability of materials can be improved without damaging the performance of cement, the cohesive agglomeration effect among particles is reduced, the phenomena that electrostatic adsorption balls are wrapped and fine particles are pasted on a lining plate are greatly reduced, the flowability of cement is improved, the grinding efficiency of a grinding machine and the powder selection efficiency of a powder selecting machine are obviously improved, the high yield is realized, and the grinding energy consumption is reduced. As a chemical activator, the grinding aid is also helpful for improving the distribution of cement particles and exciting the hydration power, improving the early strength and the later strength of the cement, and the cement product obtained by production has lower compaction and coalescence tendency, is beneficial to loading and unloading of the cement and can reduce the wall hanging phenomenon of a cement warehouse.
The cement grinding aids have a plurality of types, the cement grinding aids researched and applied in China at present comprise liquid grinding aids and solid grinding aids, and most of the basic components of the cement grinding aids belong to organic surface active substances, mainly amines, alcohols, alcamines, lignosulphonates, fatty acids and salts thereof, alkyl sulfonates and the like.
However, the existing cement grinding aid still has a plurality of problems in the using process, such as high raw material price and high production cost caused by large adding amount; the complex and undefined components make the quality control difficult and the product quality unstable, thereby affecting the use effect; the performance is not good, so that the indexes of the cement such as strength, durability, adaptability, setting time, water demand and the like do not reach the standard, the quality fluctuates, potential safety hazards are brought, and the like.
In conclusion, research and development of the cement grinding aid which has high performance, low cost, stable quality, good compatibility, improved grinding efficiency and energy utilization rate and can effectively improve the cement strength has important practical significance for the cement industry.
Disclosure of Invention
The inventor develops a new cement grinding aid formula through repeated screening and compatibility tests on the basis of long-term production practice. The formula of the invention can improve the fluidity of cement paste, improve the grindability of cement and the compatibility with other additives, obviously improve the mechanical strength of cement products, simultaneously contribute to improving the grinding efficiency and the energy utilization rate and greatly reduce the production cost.
The invention provides a grinding aid formula which is characterized by comprising the following raw materials in parts by weight:
10-45 parts of ethylene glycol; 8-52 parts of glycerol;
neopentyl glycol 0-7; 12-35 parts of triethanolamine;
0-24 parts of dimethylacetamide; and 25-55 parts of water.
Preferably, the first and second liquid crystal materials are,
the grinding aid comprises the following raw materials in parts by weight:
30 parts of ethylene glycol; 18 parts of glycerol;
triethanolamine 17; and (4) water 45.
Preferably, the first and second liquid crystal materials are,
the grinding aid comprises the following raw materials in parts by weight:
12 parts of ethylene glycol; 10 parts of glycerol;
neopentyl glycol 6; triethanolamine 35;
and (c) water 32.
Preferably, the first and second liquid crystal materials are,
the grinding aid comprises the following raw materials in parts by weight:
15 parts of ethylene glycol; 12 parts of glycerol;
neopentyl glycol 7; 15 of triethanolamine;
dimethylacetamide 24; and (5) water 55.
Further, in the present invention,
the processing method of the grinding aid formula comprises the following steps:
(1) heating neopentyl glycol and water to 60-65 ℃, and fully stirring for 15min until the neopentyl glycol is completely dissolved to obtain a mixed solution a;
(2) mixing and heating ethylene glycol, glycerol and triethanolamine to 35-40 ℃, and continuously stirring for 25-30min to obtain a mixed solution b;
(3) mixing the mixed solution a, the mixed solution b and dimethylacetamide, heating to 45-55 ℃, and fully stirring at constant temperature for 20-25min to obtain a mixed solution c;
(4) and (4) placing the mixed solution c obtained in the step (3) into an ultrasonic oscillator, carrying out constant-temperature ultrasonic oscillation for 40min at the temperature of 50 ℃, and cooling to obtain a grinding aid product.
Preferably, the first and second liquid crystal materials are,
the grinding aid comprises the following raw materials in parts by weight:
preferably, the first and second liquid crystal materials are,
the grinding aid comprises the following raw materials in parts by weight:
further, in the present invention,
the processing method of the grinding aid formula comprises the following steps:
(1) heating neopentyl glycol and water to 60-65 ℃, and fully stirring for 15min until the neopentyl glycol is completely dissolved to obtain a mixed solution a;
(2) mixing and heating ethylene glycol, glycerol and triethanolamine to 35-40 ℃, and continuously stirring for 25-30min to obtain a mixed solution b;
(3) mixing the mixed solution a, the mixed solution b, acetic acid, dimethylacetamide and diethanolisopropanolamine, heating to 45-55 ℃, and fully stirring at constant temperature for 20-25min to obtain a mixed solution c;
(4) and (4) placing the mixed solution c obtained in the step (3) into an ultrasonic oscillator, carrying out constant-temperature ultrasonic oscillation for 40min at the temperature of 50 ℃, and cooling to obtain a grinding aid product.
The invention also provides a formula of the grinding aid, which is characterized in that a control system for preparing the grinding aid is adopted, and the control system comprises:
the temperature monitoring module is used for monitoring temperature values in the first reactor, the second reactor and the third reactor;
the time monitoring module is used for monitoring the reaction time of the first reactor, the second reactor and the third reactor, the ultrasonic oscillation time of the ultrasonic oscillator and the stirring time of the stirrer;
the weighing module is used for weighing the reaction raw materials;
the feeding module is used for feeding the weighed raw materials into a corresponding reactor;
the control module is used for
Controlling a weighing module to weigh a first reaction raw material, then controlling a feeding module to feed the weighed first reaction raw material into a first reactor, controlling a stirrer to stir for a first stirring time, and controlling a temperature control module to keep the temperature in the first reactor within a first reaction temperature range;
controlling a weighing module to weigh a second reaction raw material, then controlling a feeding module to feed the weighed second reaction raw material into a second reactor, controlling a stirrer to stir for a second stirring time, and controlling a temperature control module to keep the temperature in the second reactor within a second reaction temperature range;
controlling the products of the first reactor and the second reactor to be put into a third reactor, then controlling a weighing module to weigh a third reaction raw material, then controlling a feeding module to put the weighed third reaction raw material into the third reactor, controlling a stirrer to stir for a third stirring time, and controlling a temperature control module to keep the temperature in the third reactor within a third reaction temperature range;
controlling to place the product in the third reactor into an ultrasonic oscillator, controlling a time control module to oscillate fourth reaction time, and controlling a temperature control module to keep ultrasonic oscillation within a fourth reaction temperature range;
the temperature control module, the time control module, the weighing module, the feeding module, the stirrer, the first reactor, the second reactor, the third reactor and the ultrasonic oscillator are all electrically connected with the control module, and the control module is connected with a power supply.
Further, in the present invention,
the grinding aid is characterized by comprising the following raw materials in parts by weight:
the grinding aid formula is prepared by adopting a control system for preparing the grinding aid:
(1) after a power supply is switched on, the control module controls the weighing module to weigh the first reaction raw material water and the neopentyl glycol, then controls the feeding module to feed the weighed first reaction raw material into the first reactor, controls the stirrer to stir for 15min, controls the temperature control module to keep the temperature in the first reactor within the range of 60-65 ℃ of the first reaction temperature, and fully stirs until the neopentyl glycol is completely dissolved to obtain a mixed solution a;
(2) the controller controls the weighing module to weigh second reaction raw materials of ethylene glycol, glycerol and triethanolamine, controls the feeding module to feed the weighed second reaction raw materials into the second reactor, controls the stirrer to stir for 25-30min, controls the temperature control module to keep the temperature in the second reactor within the range of 35-40 ℃ of the second reaction temperature, and fully stirs to obtain a mixed solution b;
(3) controlling the first reactor product a and the second reactor product b to be put into a third reactor, controlling a weighing module to weigh third reaction raw materials of dimethylacetamide, diethanol monoisopropanolamine, acetic acid and graphene by a controller, controlling a feeding module to put the weighed third reaction raw materials into the third reactor, controlling a stirrer to stir for 20-25min, controlling a temperature control module to keep the temperature in the third reactor within the range of 45-55 ℃ of the third reaction temperature, and fully stirring to obtain a mixed solution c;
(4) and the controller controls the product c in the third reactor to be placed in an ultrasonic oscillator, the time control module is controlled to oscillate the fourth reaction time for 30min, the temperature control module is controlled to keep the ultrasonic oscillation at the fourth reaction temperature of 50 ℃, the constant-temperature ultrasonic oscillation is carried out for 40min, and the grinding aid product is obtained after cooling.
Graphene is a polymer made of carbon atoms in sp2The hexagonal two-dimensional carbon nanomaterial with honeycomb lattices formed by the hybrid tracks can fill tiny gaps among cement particles, so that a cement microstructure is compact and flat, the graphene has higher surface activity, the hydration process of cement can be promoted, and the mechanical property of the cement is improved. The diethanol monoisopropanolamine can fully hydrate, so that cracks generated by expansion in the cement hydration hardening process are reduced, and the compressive strength of cement after hydration hardening is improved.
Because different raw materials have different viscosities, the raw materials are respectively heated and then mixed, rather than being directly mixed for preparation, so that the viscosity of the prepared grinding aid is ensured not to be overlarge.
The invention also provides a grinding aid formula which is characterized by comprising the following raw materials in parts by weight:
the concentrated bean clear water is obtained by concentrating a bean clear water stock solution generated in the extraction process of the soybean protein by 5-6 times;
the processing method of the grinding aid formula comprises the following steps:
(1) heating neopentyl glycol and water to 60-65 ℃, and fully stirring for 15min until the neopentyl glycol is completely dissolved to obtain a mixed solution a;
(2) mixing and heating ethylene glycol, glycerol and triethanolamine to 35-40 ℃, and continuously stirring for 25-30min to obtain a mixed solution b;
(3) mixing the mixed solution a, the mixed solution b, dimethylacetamide and concentrated bean clear water, heating to 45-55 ℃, and fully stirring at constant temperature for 20-25min to obtain a mixed solution c;
(4) and (4) placing the mixed solution c obtained in the step (3) into an ultrasonic oscillator, carrying out constant-temperature ultrasonic oscillation for 40min at the temperature of 55 ℃, and cooling to obtain a grinding aid product.
The invention also provides a grinding aid formula which is characterized by comprising the following raw materials in parts by weight:
the processing method of the grinding aid formula comprises the following steps:
(1) adding neopentyl glycol and fulvic acid into water, heating to 60-65 ℃, and fully stirring for 15min until the neopentyl glycol and the fulvic acid are completely dissolved to obtain a mixed solution a;
(2) mixing and heating ethylene glycol, glycerol and triethanolamine to 40 ℃, and continuously stirring for 30min to obtain a mixed solution b;
(3) mixing the mixed solution a, the mixed solution b, graphene, dimethylacetamide and concentrated bean clear water, heating to 45-55 ℃, and fully stirring at constant temperature for 20min to obtain a mixed solution c;
(4) and (4) placing the mixed solution c obtained in the step (3) into an ultrasonic oscillator, carrying out constant-temperature ultrasonic oscillation for 40min at the temperature of 55 ℃, and cooling to obtain a grinding aid product.
Preferably, the first and second electrodes are formed of a metal,
the grinding aid formula comprises the following raw materials in parts by weight:
further, in the present invention,
in the process of researching grinding aid to improve grinding efficiency, the invention finds that the compound use of graphene and diethanol monoisopropanolamine can improve cement grinding efficiency, change the dispersibility of materials in a mill, effectively eliminate the phenomena of electrostatic adsorption and ball coating and pasting of cement fine particles, optimize cement particle grading, maintain the yield of the original mill unchanged, improve the fineness and specific surface area of cement powder to improve the cement strength by 15% in 2 days and by more than 10% in 30 days.
A grinding aid formula is characterized in that in order to improve the cement grinding efficiency, graphene and diethanol monoisopropanolamine are compounded, wherein the weight parts of the graphene and the diethanol monoisopropanolamine are determined by a computer during compounding;
first, a first reference part by weight of diethanol monoisopropanolamine at the time of the disposition is calculated using formula (1),
wherein SM is a first reference weight part of the diethanolisopropanolamine, T is a final temperature of the water heating when the neopentyl glycol and the fulvic acid are fully stirred, sx is a weight part of the neopentyl glycol, arcsin () is a sine inverse trigonometric function,
integrating a function sec (t) containing unknown quantity t, wherein the value range of t is 25-30, sec is a trigonometric function and a secant function, YSC is the weight part of the glycol, BSC is the weight part of the glycerol, SYC is the weight part of the triethanolamine, ln is a logarithm taking a natural constant e as a base, and arc cot is an inverse trigonometric function of cotangent;
compounding the graphene by using the solved first reference weight part of the diethanol monoisopropanolamine, and determining the first reference weight part of the graphene by using a formula (2);
wherein MX is the first reference amount of graphene obtained by solving, lg is the logarithm with the base of 10, dqs is the weight part of the concentrated bean water, EJY is the weight part of dimethylacetamide, JB is the stirring speed during constant-temperature stirring in the processing method (3) in claim 9, and e is a natural constant; finally, determining the weight parts of the graphene and the diethanol monoisopropanolamine by using a formula (3);
quSM＝median(MX，2.5，3.5)
quFL＝median(MX，4，6)
(3)
wherein, quSM is the finally determined weight part of the graphene, quFL is the determined weight part of the diethanol monoisopropanolamine, and media () is the median of the data in parentheses.
Has the advantages that:
(1) a large amount of industrial waste can be used as raw materials, the mixing amount is low, the production cost is greatly reduced, the waste recycling is facilitated, the environment is protected, and the energy conservation and emission reduction are realized;
(2) the components are clear, the quality is easy to control, and the stability of the product quality is ensured;
(3) the cement powder has good use effect, can obviously increase the strength of cement products, improve the grinding fineness and the specific surface area of the cement powder, optimize the particle grading and improve the grindability, durability and adaptability of the cement;
(4) the compatibility of the cement product and the concrete admixture is improved;
(5) the method is beneficial to improving the grinding process, improving the dispersibility and the fluidity of cement, improving the grinding efficiency of the cement, and reducing the grinding energy consumption and the equipment abrasion;
(6) the phenomena of electrostatic adsorption and ball coating and pasting of cement fine particles are effectively eliminated, and the technical problems of ball coating, ball pasting, blockage of a conveying pipeline, agglomeration in a cement storage tank and the like in the operation process of a mill are prevented;
(7) has better delayed coagulation and anti-freezing effects.
The technical solution of the present invention is further described in detail by the following examples.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.
In the drawings:
figure 1 is a schematic diagram of the structure of a grinding aid control system of the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Before the present embodiments are further described, it is to be understood that the scope of the invention is not limited to the particular embodiments described below; it is also to be understood that the terminology used in the examples is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In addition to the specific methods, devices, and materials used in the examples, any methods, devices, and materials similar or equivalent to those described in the examples may be used in the practice of the invention in addition to the specific methods, devices, and materials used in the examples, in keeping with the knowledge of one skilled in the art and with the description of the invention.
Example 1
A grinding aid formula is prepared from the following raw materials in parts by weight:
30 parts of ethylene glycol; 18 parts of glycerol;
triethanolamine 17; 45 parts of water;
the processing method comprises the following steps:
(1) mixing and heating ethylene glycol, glycerol, triethanolamine and water to 30 ℃, and continuously stirring for 15min to obtain a mixed solution b;
(4) and (3) putting the mixed solution into an ultrasonic oscillator, carrying out constant-temperature ultrasonic oscillation for 20min at the temperature of 25 ℃, and cooling to obtain a grinding aid product.
Example 2
A grinding aid formula is prepared from the following raw materials in parts by weight:
12 parts of ethylene glycol; 10 parts of glycerol;
neopentyl glycol 6; triethanolamine 35;
water 32;
the processing method comprises the following steps:
(1) heating neopentyl glycol and water to 25 ℃, and fully stirring for 15min until the neopentyl glycol is completely dissolved to obtain a mixed solution a;
(2) mixing and heating ethylene glycol, glycerol and triethanolamine to 30 ℃, and continuously stirring for 20min to obtain a mixed solution b;
(3) heating the mixed solution a and the mixed solution b to 25 ℃, and fully stirring at constant temperature for 25min to obtain a mixed solution c;
(4) and (4) placing the mixed solution c obtained in the step (3) into an ultrasonic oscillator, carrying out ultrasonic oscillation at a constant temperature of 25 ℃ for 20min, and cooling to obtain a grinding aid product.
Example 3
A grinding aid formula is prepared from the following raw materials in parts by weight:
15 parts of ethylene glycol; 12 parts of glycerol;
neopentyl glycol 7; 15 of triethanolamine;
dimethylacetamide 24; 55 parts of water;
the processing method comprises the following steps:
(1) heating neopentyl glycol and water to 20 ℃, and fully stirring for 15min until the neopentyl glycol is completely dissolved to obtain a mixed solution a;
(2) mixing and heating ethylene glycol, glycerol and triethanolamine to 25 ℃, and continuously stirring for 15min to obtain a mixed solution b;
(3) mixing the mixed solution a, the mixed solution b and dimethylacetamide, heating to 25 ℃, and fully stirring at constant temperature for 25 ℃ to obtain a mixed solution c;
(4) and (4) placing the mixed solution c obtained in the step (3) into an ultrasonic oscillator, carrying out ultrasonic oscillation at a constant temperature of 25 ℃ for 20min, and cooling to obtain a grinding aid product.
Example 4
A grinding aid formula is prepared from the following raw materials in parts by weight:
the processing method comprises the following steps:
(1) heating neopentyl glycol and water to 22 ℃, and fully stirring for 15min until the neopentyl glycol is completely dissolved to obtain a mixed solution a;
(2) mixing and heating ethylene glycol, glycerol and triethanolamine to 27 ℃, and continuously stirring for 18min to obtain a mixed solution b;
(3) mixing and heating the mixed solution a, the mixed solution b, acetic acid, dimethylacetamide and diethanolisopropanolamine to 40 ℃, and fully stirring at constant temperature for 20min to obtain a mixed solution c;
(4) and (4) placing the mixed solution c obtained in the step (3) into an ultrasonic oscillator, carrying out constant-temperature ultrasonic oscillation for 25min at the temperature of 35 ℃, and cooling to obtain a grinding aid product.
Example 5
A grinding aid formula is prepared from the following raw materials in parts by weight:
the grinding aid formula is processed by adopting a control system for preparing the grinding aid:
(1) after a power supply is switched on, the control module controls the weighing module to weigh the first reaction raw material water and the neopentyl glycol, then controls the feeding module to feed the weighed first reaction raw material into the first reactor, controls the stirrer to stir for 15min, controls the temperature control module to keep the temperature in the first reactor within the range of 25 ℃ of the first reaction temperature, and fully stirs until the neopentyl glycol is completely dissolved to obtain a mixed solution a;
(2) the controller controls the weighing module to weigh second reaction raw materials of ethylene glycol, glycerol and triethanolamine, controls the feeding module to feed the weighed second reaction raw materials into the second reactor, controls the stirrer to stir for 20min, controls the temperature control module to keep the temperature in the second reactor within 25 ℃ of the second reaction temperature, and fully stirs to obtain a mixed solution b;
(3) controlling the first reactor product a and the second reactor product b to be put into a third reactor, controlling a weighing module to weigh third reaction raw materials of dimethylacetamide, diethanol monoisopropanolamine, acetic acid and graphene by a controller, controlling a feeding module to put the weighed third reaction raw materials into the third reactor, controlling a stirrer to stir for 30min, controlling a temperature control module to keep the temperature in the third reactor within 40 ℃ of the third reaction temperature, and fully stirring to obtain a mixed solution c;
(4) and the controller controls the product c in the third reactor to be placed in an ultrasonic oscillator, the time control module is controlled to oscillate the fourth reaction time for 30min, the temperature control module is controlled to keep the ultrasonic oscillation at the fourth reaction temperature of 40 ℃, the constant-temperature ultrasonic oscillation is carried out for 25min, and the grinding aid product is obtained after cooling.
Example 6
The same procedure as in example 5 was repeated except that graphene was not present and the weight part of diethanolisopropanolamine was 12.
Example 7
The same procedure as in example 5 was repeated, except that diethanol monoisopropanolamine was not added and graphene was added in 12 parts by weight.
Example 8
A grinding aid formula is prepared from the following raw materials in parts by weight:
the concentrated bean clear water is obtained by concentrating a bean clear water stock solution generated in the extraction process of the soybean protein by 5-6 times;
the processing method of the grinding aid formula comprises the following steps:
(1) heating neopentyl glycol and water to 60 ℃, and fully stirring for 15min until the neopentyl glycol is completely dissolved to obtain a mixed solution a;
(2) mixing and heating ethylene glycol, glycerol and triethanolamine to 40 ℃, and continuously stirring for 25min to obtain a mixed solution b;
(3) mixing the mixed solution a, the mixed solution b, dimethylacetamide and concentrated bean clear water, heating to 50 ℃, and fully stirring at constant temperature for 20min to obtain a mixed solution c;
(4) and (4) placing the mixed solution c obtained in the step (3) into an ultrasonic oscillator, carrying out constant-temperature ultrasonic oscillation for 40min at the temperature of 55 ℃, and cooling to obtain a grinding aid product.
Example 9
A grinding aid formula is prepared from the following raw materials in parts by weight:
the processing method of the grinding aid formula comprises the following steps:
(1) adding neopentyl glycol and fulvic acid into water, heating to 60-65 ℃, and fully stirring for 15min until the neopentyl glycol and the fulvic acid are completely dissolved to obtain a mixed solution a;
(2) mixing and heating ethylene glycol, glycerol and triethanolamine to 40 ℃, and continuously stirring for 30min to obtain a mixed solution b;
(3) mixing the mixed solution a, the mixed solution b, graphene, dimethylacetamide and concentrated bean clear water, heating to 45-55 ℃, and fully stirring at constant temperature for 20min to obtain a mixed solution c;
(4) and (4) placing the mixed solution c obtained in the step (3) into an ultrasonic oscillator, carrying out constant-temperature ultrasonic oscillation for 40min at the temperature of 55 ℃, and cooling to obtain a grinding aid product.
Comparative example 1
A grinding aid formula is prepared from the following raw materials in parts by weight:
30 parts of ethylene glycol; 60 parts of glycerol;
10 of triethanolamine; 45 parts of water;
the processing method was the same as in example 1.
Cement grinding aid performance test
The cement grinding aids prepared in examples 1-3 of the present invention and comparative examples 1-2 and commercially available grinding aids were tested for performance. The test results are shown in table 1 below:
TABLE 1 grinding aid Performance test results
The test result shows that: compared with a blank control group, the grinding aid of each test group can improve the performance of the cement product to different degrees. In contrast, the grinding aids of examples 1-3 of the invention were superior in performance to the comparative examples 1-2 and commercial grinding aid products in which the formulation of the raw materials and the processing method were changed. The graphene and the diethanol monoisopropanolamine are compounded for use, so that the cement grinding efficiency can be improved, the dispersibility of materials in a mill is changed, the phenomena of electrostatic adsorption of cement fine particles and ball coating and pasting of the cement are effectively eliminated, the cement particle grading is optimized, the cement grinding efficiency is improved, and the cement quality is stable.
While the preferred embodiments and examples of the present invention have been described in detail, the present invention is not limited to the embodiments and examples described above, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (8)
1. The grinding aid is characterized by comprising the following raw materials in parts by weight:
10-45 parts of ethylene glycol; 8-52 parts of glycerol;
neopentyl glycol 0-7; 12-35 parts of triethanolamine;
0-24 parts of dimethylacetamide; 25-55 parts of water;
4-6 parts of acetic acid; 8-11 parts of diethanol monoisopropanolamine;
2.5-3.5% of graphene;
the grinding aid is prepared by the following method:
(1) after a power supply is switched on, the control module controls the weighing module to weigh the first reaction raw material water and the neopentyl glycol, then controls the feeding module to feed the weighed first reaction raw material into the first reactor, controls the stirrer to stir for 15min, controls the temperature control module to keep the temperature in the first reactor within the range of 60-65 ℃ of the first reaction temperature, and fully stirs until the neopentyl glycol is completely dissolved to obtain a mixed solution a;
(2) the controller controls the weighing module to weigh second reaction raw materials of ethylene glycol, glycerol and triethanolamine, controls the feeding module to feed the weighed second reaction raw materials into the second reactor, controls the stirrer to stir for 25-30min, controls the temperature control module to keep the temperature in the second reactor within the range of 35-40 ℃ of the second reaction temperature, and fully stirs to obtain a mixed solution b;
(3) controlling the first reactor product a and the second reactor product b to be put into a third reactor, controlling a weighing module to weigh third reaction raw materials of dimethylacetamide, diethanol monoisopropanolamine, acetic acid and graphene by a controller, controlling a feeding module to put the weighed third reaction raw materials into the third reactor, controlling a stirrer to stir for 20-25min, controlling a temperature control module to keep the temperature in the third reactor within the range of 45-55 ℃ of the third reaction temperature, and fully stirring to obtain a mixed solution c;
(4) and the controller controls the product c in the third reactor to be placed in an ultrasonic oscillator, the time control module is controlled to oscillate the fourth reaction time for 30min, the temperature control module is controlled to keep the ultrasonic oscillation at the fourth reaction temperature of 50 ℃, the constant-temperature ultrasonic oscillation is carried out for 40min, and the grinding aid product is obtained after cooling.
2. The grinding aid of claim 1, wherein the grinding aid comprises the following raw materials in parts by weight:
30 parts of ethylene glycol; 18 parts of glycerol;
triethanolamine 17; and (4) water 45.
3. The grinding aid of claim 1, wherein the grinding aid comprises the following raw materials in parts by weight:
12 parts of ethylene glycol; 10 parts of glycerol;
neopentyl glycol 6; triethanolamine 35;
and (c) water 32.
4. The grinding aid of claim 1, wherein the grinding aid comprises the following raw materials in parts by weight:
15 parts of ethylene glycol; 12 parts of glycerol;
neopentyl glycol 7; 15 of triethanolamine;
dimethylacetamide 24; and (5) water 55.
5. The grinding aid as claimed in claim 4, wherein the grinding aid is processed by the following method:
(1) heating neopentyl glycol and water to 60-65 ℃, and fully stirring for 15min until the neopentyl glycol is completely dissolved to obtain a mixed solution a;
(2) mixing and heating ethylene glycol, glycerol and triethanolamine to 35-40 ℃, and continuously stirring for 25-30min to obtain a mixed solution b;
(3) mixing the mixed solution a, the mixed solution b and dimethylacetamide, heating to 45-55 ℃, and fully stirring at constant temperature for 20-25min to obtain a mixed solution c;
(4) and (4) placing the mixed solution c obtained in the step (3) into an ultrasonic oscillator, carrying out constant-temperature ultrasonic oscillation for 40min at the temperature of 50 ℃, and cooling to obtain a grinding aid product.
6. The grinding aid of claim 1, wherein the grinding aid comprises the following raw materials in parts by weight:
12 parts of ethylene glycol; 20 parts of glycerol;
neopentyl glycol 6; triethanolamine 25;
dimethylacetamide 12; 6 of acetic acid;
diethanolisopropanolamine 10; and (4) water 25.
7. The grinding aid of claim 1 or 6, wherein the grinding aid is processed by the following method:
(1) heating neopentyl glycol and water to 60-65 ℃, and fully stirring for 15min until the neopentyl glycol is completely dissolved to obtain a mixed solution a;
(2) mixing and heating ethylene glycol, glycerol and triethanolamine to 35-40 ℃, and continuously stirring for 25-30min to obtain a mixed solution b;
(3) mixing the mixed solution a, the mixed solution b, acetic acid, dimethylacetamide and diethanolisopropanolamine, heating to 45-55 ℃, and fully stirring at constant temperature for 20-25min to obtain a mixed solution c;
(4) and (4) placing the mixed solution c obtained in the step (3) into an ultrasonic oscillator, carrying out constant-temperature ultrasonic oscillation for 40min at the temperature of 50 ℃, and cooling to obtain a grinding aid product.
8. The grinding aid of claim 1 wherein a control system for the preparation of the grinding aid is employed, said control system comprising:
the temperature monitoring module is used for monitoring temperature values in the first reactor, the second reactor and the third reactor;
the time monitoring module is used for monitoring the reaction time of the first reactor, the second reactor and the third reactor, the ultrasonic oscillation time of the ultrasonic oscillator and the stirring time of the stirrer;
the weighing module is used for weighing the reaction raw materials;
the feeding module is used for feeding the weighed raw materials into a corresponding reactor;
the control module is used for
Controlling a weighing module to weigh a first reaction raw material, then controlling a feeding module to feed the weighed first reaction raw material into a first reactor, controlling a stirrer to stir for a first stirring time, and controlling a temperature control module to keep the temperature in the first reactor within a first reaction temperature range;
controlling a weighing module to weigh a second reaction raw material, then controlling a feeding module to feed the weighed second reaction raw material into a second reactor, controlling a stirrer to stir for a second stirring time, and controlling a temperature control module to keep the temperature in the second reactor within a second reaction temperature range;
controlling the products of the first reactor and the second reactor to be put into a third reactor, then controlling a weighing module to weigh a third reaction raw material, then controlling a feeding module to put the weighed third reaction raw material into the third reactor, controlling a stirrer to stir for a third stirring time, and controlling a temperature control module to keep the temperature in the third reactor within a third reaction temperature range;
controlling to place the product in the third reactor into an ultrasonic oscillator, controlling a time control module to oscillate fourth reaction time, and controlling a temperature control module to keep ultrasonic oscillation within a fourth reaction temperature range;
the temperature control module, the time control module, the weighing module, the feeding module, the stirrer, the first reactor, the second reactor, the third reactor and the ultrasonic oscillator are all electrically connected with the control module, and the control module is connected with a power supply.
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