CN110304856B - Preparation process of grinding aid - Google Patents
Preparation process of grinding aid Download PDFInfo
- Publication number
- CN110304856B CN110304856B CN201910677347.2A CN201910677347A CN110304856B CN 110304856 B CN110304856 B CN 110304856B CN 201910677347 A CN201910677347 A CN 201910677347A CN 110304856 B CN110304856 B CN 110304856B
- Authority
- CN
- China
- Prior art keywords
- parts
- weight
- distillation
- matrix
- glycol
- 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.)
- Active
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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/52—Grinding aids; Additives added during grinding
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention relates to the technical field of cement additives, in particular to a grinding aid preparation process. The grinding aid preparation process of the invention uses industrial waste liquid such as ethylene glycol, glycerol, neopentyl glycol, triethanolamine, dimethylacetamide and the like generated by chemical or textile enterprises as raw materials to prepare the cement grinding aid, so that the production cost is greatly reduced.
Description
Technical Field
The invention relates to the technical field of cement additives, in particular to a grinding aid preparation process.
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. In addition, the quality control is difficult and the product quality is unstable due to complex composition and undefined components of many grinding aid products, so that the use effect is influenced and the grinding aid performance is poor. Therefore, the research and development of the cement grinding aid which has high performance, low cost, stable quality, high grinding efficiency and energy utilization rate and can effectively improve the strength of cement and the establishment of a corresponding preparation process method have important practical significance for the cement industry.
Disclosure of Invention
The inventor establishes a novel cement grinding aid preparation process through repeated screening and compatibility tests on the basis of long-term production practice. The preparation process of the invention uses industrial waste liquid generated by chemical industry or textile enterprises as raw material to prepare the cement grinding aid, thereby greatly reducing the production cost. Moreover, the cement grinding aid prepared by the process 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, and improve the grinding efficiency and the energy utilization rate.
The invention provides a grinding aid produced by using chemical waste liquid as a raw material, which is characterized in that,
(1) the preparation method of neopentyl glycol comprises the following steps:
sucking neopentyl glycol waste liquid generated by chemical engineering or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.4atm-0.5atm, and the distillation temperature is 160-170 ℃; condensing and collecting distilled components to obtain neopentyl glycol;
(2) the preparation method of the ethylene glycol comprises the following steps:
sucking ethylene glycol waste liquid generated by chemical engineering or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.4atm-0.5atm, and the distillation temperature is 170-193 ℃; condensing and collecting distilled components to obtain ethylene glycol;
(3) the preparation method of the glycerol comprises the following steps:
sucking waste glycerol liquid generated by chemical or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.4atm-0.5atm, and the distillation temperature is 210-250 ℃; condensing and collecting distilled components to obtain glycerol;
(4) the preparation method of the triethanolamine comprises the following steps:
absorbing triethanolamine waste liquid generated by chemical or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.4atm-0.5atm, and the distillation temperature is 260-300 ℃; condensing and collecting distilled components to obtain triethanolamine;
(5) the preparation method of the dimethylacetamide comprises the following steps:
absorbing dimethylacetamide waste liquid generated by chemical or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.4atm-0.5atm, and the distillation temperature is 130-150 ℃; condensing and collecting distilled components to obtain dimethylacetamide;
(6) the preparation method of the triethylene glycol comprises the following steps:
absorbing triethylene glycol waste liquid generated by chemical engineering or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.4-0.5 atm, and the distillation temperature is 250-275 ℃; condensing and collecting distilled components to obtain the triethylene glycol.
(7) The preparation method of the diethylene glycol comprises the following steps:
absorbing triethylene glycol waste liquid generated by chemical engineering or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.4atm-0.5atm, and the distillation temperature is 230-; condensing and collecting distilled components to obtain the triethylene glycol.
Further, in the above-mentioned case,
the grinding aid comprises the following raw materials: neopentyl glycol, ethylene glycol, glycerol, triethanolamine, dimethylacetamide, triethylene glycol, diethylene glycol, or a combination thereof;
the raw materials of the grinding aid are prepared by using waste liquid generated by chemical industry or textile enterprises.
Preferably, the first and second liquid crystal materials are,
the grinding aid comprises the following raw materials in parts by weight:
neopentyl glycol 0-5; 10-50 parts of ethylene glycol; 10-50% of diethylene glycol;
0-60 parts of glycerol; 0-30 parts of triethanolamine; 0-5 parts of dimethylacetamide;
2-10 parts of triethylene glycol; and 3-35 parts of water.
Preferably, the first and second liquid crystal materials are,
the grinding aid comprises the following raw materials in parts by weight:
ethylene glycol or glycerol 50; triethylene glycol or triethanolamine or diethylene glycol 15;
and (3) water 35.
Preferably, the first and second liquid crystal materials are,
the grinding aid comprises the following raw materials in parts by weight:
neopentyl glycol 5; ethylene glycol 35; 50 parts of diethylene glycol;
10 parts of glycerol; 15 parts of triethylene glycol; dimethylacetamide 5;
and (3) water 30.
Preferably, the first and second liquid crystal materials are,
the grinding aid comprises the following raw materials in parts by weight:
20 parts of ethylene glycol; 15 parts of triethylene glycol; diethanolisopropanolamine 30;
and (3) water 35.
A preparation process of a grinding aid produced by using chemical waste liquid as a raw material is characterized by comprising the following steps:
(1) heating 45-55 parts by weight of water to 60-65 ℃, adding 5-7 parts by weight of neopentyl glycol into the water, and fully stirring until the neopentyl glycol is completely dissolved to obtain a neopentyl glycol aqueous solution;
(2) respectively heating 10-15 parts by weight of ethylene glycol, 8-12 parts by weight of propylene glycol, 12-15 parts by weight of triethanolamine, 15-18 parts by weight of triethylene glycol and 20-25 parts by weight of diethylene glycol to 45 ℃, mixing, and continuously stirring for 25-30 minutes to obtain a mixed solution;
(3) and (3) respectively heating the neopentyl glycol aqueous solution, the mixed solution prepared in the step (2) and 20-24 parts by weight of dimethylacetamide to 55 ℃, mixing, stirring at constant temperature for 10 minutes, putting into an ultrasonic oscillator, and performing ultrasonic oscillation at constant temperature of 55 ℃ for 25 minutes to obtain the grinding aid product.
Further, in the present invention,
the preparation process of the grinding aid produced by using the chemical waste liquid as the raw material is characterized in that the step (3) is as follows:
respectively heating the neopentyl glycol aqueous solution, the mixed solution prepared in the step (2) and 20-24 parts by weight of dimethylacetamide to 55 ℃, mixing, adding 10-15 parts by weight of shell powder, 3-5 parts by weight of nano-silica and 2.5-3.5 parts by weight of graphene, stirring at constant temperature for 10 minutes, putting into an ultrasonic oscillator, and carrying out ultrasonic oscillation at constant temperature for 35 minutes at 55 ℃ to obtain the grinding aid product.
In the process of improving the grinding efficiency by the grinding aid, the invention finds that the compound use of the graphene, the nano silicon dioxide and the shell powder can improve the cement grinding efficiency, reduce the electrostatic adsorption ball-wrapping phenomenon formed in the grinding process, reduce the re-agglomeration trend of ultrafine particles formed in the grinding process, improve the cement fluidity, improve the cement paste fluidity, improve the grindability of cement and the compatibility with other additives, and improve the grinding effect of a grinding machine and the powder selection efficiency of a powder selecting machine, thereby reducing the grinding energy consumption. The cement produced by using the grinding aid has a lower compaction and coalescence tendency, so that the loading and unloading of the cement are facilitated, and the wall hanging phenomenon of the cement can be reduced. As a chemical additive, the grinding aid can improve the distribution of cement particles and stimulate the hydration power, thereby improving the early strength and the later strength of the cement.
The specific steps for determining the weight parts of the graphene, the nano-silica and the shell powder are as follows: firstly, sample data is constructed and implemented as follows: compounding the graphene, the nano silicon dioxide and the shell powder according to different weight parts, controlling the temperature to be 55 ℃ during constant-temperature ultrasonic oscillation during compounding, other required conditions are in a reasonable range, the degree of electrostatic adsorption encapsulation of graphene, nano-silica and shell powder in different parts by weight at each time is recorded, the parts by weight of graphene, nano-silica and shell powder in the case of low degree of electrostatic adsorption encapsulation are extracted to form n records, the n records form a corresponding matrix B, the matrix B has n rows and 3 columns, each row of the matrix B represents one record, the 1 st column of the matrix B represents the weight part of the 1 st material graphene, the 2 nd column of the matrix B represents the weight part of 2 nd material nano-silica, and the 3 rd column of the matrix B represents the weight part of 3 rd material shell powder;
secondly, for the matrix B, the information loss amount of each column in the matrix B is first calculated by using formula (1):
wherein HiIs the information loss of the ith column of the matrix B, i.e. the information loss of the ith material, n is the total number of rows of the matrix B, BijThe value of the ith row and the jth column of the matrix B is represented, T is the temperature during constant-temperature ultrasonic oscillation, ln () is a logarithm taking a natural constant e as a base, and i is 1, 2 and 3; j is 1, 2, 3, … … n.
And (2) calculating the information loss amount of each material by using the formula (1), wherein the larger the information loss of the material is, the larger the obtained value is, the smaller the coefficient value of the regulation coefficient after calculation is, so that the regulation coefficient can be well regulated according to the information loss amount.
After the information loss amount of each material is obtained, the adjustment coefficient of each column is calculated by using the formula (2):
wherein wsiThe adjustment coefficient of the ith column of the matrix B is the adjustment coefficient of the ith material, and lg is the logarithm with the base of 10;
the adjustment coefficient was substituted into the formula (3) to obtain the parts by weight of each material.
The adjustment coefficient is solved by using the formula (2), and is determined according to the relation between data, so that the objectivity of the adjustment coefficient is strong, extra introduction amount required by determining the coefficient is not increased, and a strong mathematical theoretical basis is provided.
Wherein M isiI is the weight of the i column of the matrix B, i.e. the weight of the i-th material, i is 1, 2, 3;
m solved by equation (3)1、M2、M3The weight parts of the graphene, the nano silicon dioxide and the shell powder in compounding are calculated;
when the weight of each material is calculated according to the formula (3), not only the adjustment coefficient in the matrix B is considered, but also the weight of each record in the record when the matrix B is constructed is also considered, and the matrix B is constructed by artificially judging the data composition when the degree of the electrostatic adsorption ball coating is low, so that the method belongs to a subjective judgment method, subjective factors and objective calculation are fully considered according to the formula (3), and the obtained result is more scientific and persuasive.
Compared with the prior art, the invention has the following beneficial effects:
(1) a large amount of chemical or textile industrial waste liquid is used as a raw material, and the mixing amount is low, so that the production cost is greatly reduced, and meanwhile, the waste recycling is facilitated, the environment is protected, the energy is saved, and the emission is reduced;
(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.
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 preparation process of a grinding aid comprises the following steps:
(1) preparation of neopentyl glycol: sucking neopentyl glycol waste liquid generated by chemical engineering or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.5atm, and the distillation temperature is 170 ℃; condensing and collecting distilled components to obtain neopentyl glycol;
(2) preparation of dimethylacetamide: absorbing dimethylacetamide waste liquid generated by chemical or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.5atm, and the distillation temperature is 150 ℃; condensing and collecting distilled components to obtain dimethylacetamide;
(3) preparing ethylene glycol: sucking ethylene glycol waste liquid generated by chemical engineering or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.5atm, and the distillation temperature is 193 ℃; condensing and collecting distilled components to obtain ethylene glycol;
(4) preparation of glycerol: sucking waste glycerol liquid generated by chemical or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.5atm, and the distillation temperature is 250 ℃; condensing and collecting distilled components to obtain glycerol;
(5) preparing triethanolamine: absorbing triethanolamine waste liquid generated by chemical or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.5atm, and the distillation temperature is 300 ℃; condensing and collecting distilled components to obtain triethanolamine;
(6) preparation of triethylene glycol: absorbing triethylene glycol waste liquid generated by chemical engineering or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.4atm, and the distillation temperature is 250 ℃; condensing and collecting distilled components to obtain triethylene glycol;
(7) preparation of diethylene glycol:
absorbing triethylene glycol waste liquid generated by chemical engineering or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.5atm, and the distillation temperature is 240 ℃; condensing and collecting distilled components to obtain the triethylene glycol.
20-25 parts by weight of diethylene glycol
Example 2
A preparation process of a grinding aid comprises the following steps:
the procedure used in the examples for the preparation of the starting materials was the same as in example 1
(8) Heating 45 parts by weight of water to 60 ℃, adding 6 parts by weight of neopentyl glycol, and fully stirring until the neopentyl glycol is completely dissolved to obtain a neopentyl glycol aqueous solution;
(9) respectively heating 12 parts by weight of ethylene glycol, 10 parts by weight of propylene glycol, 12 parts by weight of triethanolamine, 15 parts by weight of triethylene glycol and 20 parts by weight of diethylene glycol to 45 ℃, mixing, and continuously stirring for 25 minutes to obtain a mixed solution;
(10) and (3) respectively heating the neopentyl glycol aqueous solution, the mixed solution prepared in the step (9) and 20 parts by weight of dimethylacetamide to 55 ℃, mixing, stirring at constant temperature for 10 minutes, putting into an ultrasonic oscillator, and performing ultrasonic oscillation at constant temperature of 55 ℃ for 15 minutes to obtain the grinding aid product.
Example 3
A preparation process of a grinding aid comprises the following steps:
the procedure used in the examples for the preparation of the starting materials was the same as in example 1
(8) Heating 50 parts by weight of water to 60 ℃, adding 5 parts by weight of neopentyl glycol, and fully stirring until the neopentyl glycol is completely dissolved to obtain a neopentyl glycol aqueous solution;
(9) respectively heating 10 parts by weight of ethylene glycol, 8 parts by weight of propylene glycol, 12 parts by weight of triethanolamine, 15 parts by weight of triethylene glycol and 22 parts by weight of diethylene glycol to 45 ℃, mixing, and continuously stirring for 25 minutes to obtain a mixed solution;
(10) and (3) respectively heating the neopentyl glycol aqueous solution, the mixed solution prepared in the step (9) and 20 parts by weight of dimethylacetamide to 55 ℃, mixing, adding 10 parts by weight of shell powder, 3 parts by weight of nano-silica and 2.5 parts by weight of graphene, stirring at constant temperature for 10 minutes, putting into an ultrasonic oscillator, and carrying out ultrasonic oscillation at constant temperature for 35 minutes at 55 ℃ to obtain the grinding aid product.
Example 4
A preparation process of a grinding aid comprises the following steps:
the procedure used in the examples for the preparation of the starting materials was the same as in example 1
(8) Heating 55 parts by weight of water to 65 ℃, adding 7 parts by weight of neopentyl glycol, and fully stirring until the neopentyl glycol is completely dissolved to obtain a neopentyl glycol aqueous solution;
(9) respectively heating 15 parts by weight of ethylene glycol, 12 parts by weight of propylene glycol, 15 parts by weight of triethanolamine, 18 parts by weight of triethylene glycol and 25 parts by weight of diethylene glycol to 45 ℃, mixing, and continuously stirring for 30 minutes to obtain a mixed solution;
(10) and (3) respectively heating the neopentyl glycol aqueous solution, the mixed solution prepared in the step (9) and 24 parts by weight of dimethylacetamide to 55 ℃, mixing, adding 15 parts by weight of shell powder, 5 parts by weight of nano-silica and 3.5 parts by weight of graphene, stirring at constant temperature for 10 minutes, putting into an ultrasonic oscillator, and carrying out ultrasonic oscillation at constant temperature for 35 minutes at 55 ℃ to obtain the grinding aid product.
Example 5
Adding 15 parts by weight of nano silicon dioxide and 8.5 parts by weight of graphene into the mixture without adding shell powder in the step (10); the rest is the same as example 4.
Example 6
Wherein 20 parts by weight of shell powder is added without adding nano silicon dioxide in the step (10); the rest is the same as example 4.
Example 7
Adding 8.5 parts by weight of nano silicon dioxide without adding graphene in the step (10); the rest is the same as example 4.
Example 8
A preparation process of a grinding aid comprises the following steps:
the starting materials used in the examples were prepared in the same manner as in example 1, and diethanolisopropanolamine was commercially available,
(8) respectively heating 20 parts by weight of ethylene glycol, 15 parts by weight of triethylene glycol, 30 parts by weight of triethanolamine, 18 parts by weight of triethylene glycol and 25 parts by weight of diethylene glycol to 45 ℃, mixing, and continuously stirring for 30 minutes to obtain a mixed solution;
(9) and (3) respectively heating 30 parts by weight of diethanol monoisopropanolamine and the mixed solution prepared in the step (8) to 55 ℃, mixing, stirring at constant temperature for 10 minutes, putting into an ultrasonic oscillator, and carrying out ultrasonic oscillation at constant temperature of 55 ℃ for 35 minutes to obtain the grinding aid product.
Comparative example
A preparation process of a grinding aid comprises the following steps:
the procedure for the preparation of the starting materials used in the comparative example was the same as in example 1
(8) Respectively heating 6 parts by weight of neopentyl glycol, 12 parts by weight of ethylene glycol, 10 parts by weight of glycerol, 13.5 parts by weight of triethanolamine, 22 parts by weight of dimethylacetamide and 50 parts by weight of water to 55 ℃, mixing, and continuously stirring for 45 minutes at constant temperature to obtain the grinding aid product.
Cement grinding aid performance test
The cement grinding aids and commercially available grinding aids prepared using the inventive examples 1-3 and comparative example processes 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 have significantly better performance than the comparative example product and the commercial grinding aid product with the modified preparation process.
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, 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 (2)
1. A grinding aid produced by using chemical waste liquid as a raw material is characterized in that,
(1) the preparation method of neopentyl glycol comprises the following steps:
sucking neopentyl glycol waste liquid generated by chemical engineering or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.4atm-0.5atm, and the distillation temperature is 160-170 ℃; condensing and collecting distilled components to obtain neopentyl glycol;
(2) the preparation method of the ethylene glycol comprises the following steps:
sucking ethylene glycol waste liquid generated by chemical engineering or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.4atm-0.5atm, and the distillation temperature is 170-193 ℃; condensing and collecting distilled components to obtain ethylene glycol;
(3) the preparation method of the glycerol comprises the following steps:
sucking waste glycerol liquid generated by chemical or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.4atm-0.5atm, and the distillation temperature is 210-250 ℃; condensing and collecting distilled components to obtain glycerol;
(4) the preparation method of the triethanolamine comprises the following steps:
absorbing triethanolamine waste liquid generated by chemical or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.4atm-0.5atm, and the distillation temperature is 260-300 ℃; condensing and collecting distilled components to obtain triethanolamine;
(5) the preparation method of the dimethylacetamide comprises the following steps:
absorbing dimethylacetamide waste liquid generated by chemical or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.4atm-0.5atm, and the distillation temperature is 130-150 ℃; condensing and collecting distilled components to obtain dimethylacetamide;
(6) the preparation method of the triethylene glycol comprises the following steps:
absorbing triethylene glycol waste liquid generated by chemical engineering or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.4-0.5 atm, and the distillation temperature is 250-275 ℃; condensing and collecting distilled components to obtain triethylene glycol;
(7) the preparation method of the diethylene glycol comprises the following steps:
absorbing triethylene glycol waste liquid generated by chemical engineering or textile enterprises into a distillation kettle, indirectly heating the distillation kettle by using heat conduction oil, and carrying out reduced pressure distillation, wherein the vacuum degree is 0.4atm-0.5atm, and the distillation temperature is 230-; condensing and collecting distilled components to obtain triethylene glycol;
the grinding aid is prepared from the following raw materials:
45-55 parts of water, 5-7 parts of neopentyl glycol, 10-15 parts of ethylene glycol, 8-12 parts of glycerol, 12-15 parts of triethanolamine, 15-18 parts of triethylene glycol, 20-25 parts of diethylene glycol, 20-24 parts of dimethylacetamide, 10-15 parts of shell powder, 3-5 parts of nano silica and 2.5-3.5 parts of graphene;
the specific steps for determining the weight parts of the graphene, the nano silicon dioxide and the shell powder are as follows: firstly, sample data is constructed and implemented as follows: compounding the graphene, the nano silicon dioxide and the shell powder according to different weight parts, controlling the temperature to be 55 ℃ during constant-temperature ultrasonic oscillation during compounding, other required conditions are in a reasonable range, the degree of electrostatic adsorption encapsulation of graphene, nano-silica and shell powder in different parts by weight at each time is recorded, the parts by weight of graphene, nano-silica and shell powder in the case of low degree of electrostatic adsorption encapsulation are extracted to form n records, the n records form a corresponding matrix B, the matrix B has n rows and 3 columns, each row of the matrix B represents one record, the 1 st column of the matrix B represents the weight part of the 1 st material graphene, the 2 nd column of the matrix B represents the weight part of 2 nd material nano-silica, and the 3 rd column of the matrix B represents the weight part of 3 rd material shell powder;
secondly, for the matrix B, the information loss amount of each column in the matrix B is first calculated by using formula (1):
wherein HiIs the information loss of the ith column of the matrix B, i.e. the information loss of the ith material, n is the total number of rows of the matrix B, BijThe value of the ith row and the jth column of the matrix B is represented, T is the temperature during constant-temperature ultrasonic oscillation, ln () is a logarithm taking a natural constant e as a base, and i is 1, 2 and 3; j is 1, 2, 3, … … n;
after the information loss amount of each material is obtained, the adjustment coefficient of each column is calculated by using the formula (2):
wherein wsiThe adjustment coefficient of the ith column of the matrix B is the adjustment coefficient of the ith material, and lg () is a logarithm taking 10 as a base;
substituting the adjustment coefficient into a formula (3) to obtain the weight part of each material;
wherein M isiI is the weight of the i column of the matrix B, i.e. the weight of the i-th material, i is 1, 2, 3;
m solved by equation (3)1、M2、M3The weight parts of the graphene, the nano silicon dioxide and the shell powder in compounding are adopted.
2. The preparation process of the grinding aid produced by using the chemical waste liquid as the raw material according to claim 1, which is characterized by comprising the following steps:
(1) heating 45-55 parts by weight of water to 60-65 ℃, adding 5-7 parts by weight of neopentyl glycol into the water, and fully stirring until the neopentyl glycol is completely dissolved to obtain a neopentyl glycol aqueous solution;
(2) respectively heating 10-15 parts by weight of ethylene glycol, 8-12 parts by weight of propylene glycol, 12-15 parts by weight of triethanolamine, 15-18 parts by weight of triethylene glycol and 20-25 parts by weight of diethylene glycol to 45 ℃, mixing, and continuously stirring for 25-30 minutes to obtain a mixed solution;
(3) respectively heating the neopentyl glycol aqueous solution, the mixed solution prepared in the step (2) and 20-24 parts by weight of dimethylacetamide to 55 ℃, mixing, stirring at constant temperature for 10 minutes, putting into an ultrasonic oscillator, and performing ultrasonic oscillation at constant temperature of 55 ℃ for 25 minutes to obtain a grinding aid product;
the step (3) is as follows:
respectively heating the neopentyl glycol aqueous solution, the mixed solution prepared in the step (2) and 20-24 parts by weight of dimethylacetamide to 55 ℃, mixing, adding 10-15 parts by weight of shell powder, 3-5 parts by weight of nano-silica and 2.5-3.5 parts by weight of graphene, stirring at constant temperature for 10 minutes, putting into an ultrasonic oscillator, and carrying out ultrasonic oscillation at constant temperature for 35 minutes at 55 ℃ to obtain the grinding aid product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910677347.2A CN110304856B (en) | 2019-07-25 | 2019-07-25 | Preparation process of grinding aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910677347.2A CN110304856B (en) | 2019-07-25 | 2019-07-25 | Preparation process of grinding aid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110304856A CN110304856A (en) | 2019-10-08 |
| CN110304856B true CN110304856B (en) | 2021-11-09 |
Family
ID=68080701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910677347.2A Active CN110304856B (en) | 2019-07-25 | 2019-07-25 | Preparation process of grinding aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110304856B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111943552A (en) * | 2020-08-14 | 2020-11-17 | 徐州吉兴新材料有限公司 | Method for producing grinding aid by using heavy alcohol rectification polymerization polyol |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009234821A (en) * | 2008-03-26 | 2009-10-15 | Sumitomo Osaka Cement Co Ltd | Production method of cement, cement composition, and cement hardened body |
| CN107235649A (en) * | 2017-05-17 | 2017-10-10 | 常州第六元素材料科技股份有限公司 | A kind of cement grinding aid and preparation method thereof |
| CN109231875A (en) * | 2018-09-30 | 2019-01-18 | 颍上县永军建材有限责任公司 | A kind of cement composite grinding additive |
-
2019
- 2019-07-25 CN CN201910677347.2A patent/CN110304856B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009234821A (en) * | 2008-03-26 | 2009-10-15 | Sumitomo Osaka Cement Co Ltd | Production method of cement, cement composition, and cement hardened body |
| CN107235649A (en) * | 2017-05-17 | 2017-10-10 | 常州第六元素材料科技股份有限公司 | A kind of cement grinding aid and preparation method thereof |
| CN109231875A (en) * | 2018-09-30 | 2019-01-18 | 颍上县永军建材有限责任公司 | A kind of cement composite grinding additive |
Non-Patent Citations (2)
| Title |
|---|
| 《Impact of grinding aids on dry grinding performance, bulk properties and surface energy》;P.Prziwara;《Advanced Powder Technology》;20180228;第416-425页 * |
| 《助磨剂配方设计及其对水泥性能的影响研究》;赵计辉;《硅酸盐通报》;20140415;第724-730页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110304856A (en) | 2019-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101531888B (en) | Shale-control agent for drilling fluid and preparation method thereof | |
| CN107828381A (en) | A kind of natural environmental-protective surface dust suppression curing agent and preparation method thereof | |
| WO2015058684A1 (en) | Preparation method for waterborne anti-corrosion resin | |
| CN110304856B (en) | Preparation process of grinding aid | |
| CN107235649A (en) | A kind of cement grinding aid and preparation method thereof | |
| CN101270247B (en) | Water-proof emulsion for coal pile in the open air | |
| CN114105516B (en) | Sprayed concrete viscosity modifier and preparation method thereof | |
| CN103923715B (en) | With blue charcoal end for the method for water charcoal slurry prepared by raw material | |
| CN114409311A (en) | High-performance asphalt concrete and preparation method thereof | |
| CN105271876B (en) | A kind of cement grinding aid | |
| CN101928630B (en) | Preparation method for solar silicon wafer linear cutting mortar | |
| CN110330250B (en) | Grinding aid formula | |
| CN109370755B (en) | Concrete water-based release agent and preparation method thereof | |
| CN110330253B (en) | Grinding aid formula | |
| CN106085444A (en) | The preparation method of a kind of soil improvement chelating agen reducing Lead In Soil content and prepared soil improvement chelating agen | |
| CN106746811A (en) | One kind is without retarder water resistance ammonium magnesium phosphate cement and preparation method thereof | |
| CN114230217A (en) | Cement grinding aid | |
| CN114230230B (en) | Machine-made sand regulator and preparation method and application thereof | |
| CN110526655B (en) | Cement-based self-leveling wear-resistant floor material prepared from modified nickel slag and preparation method thereof | |
| CN112624653A (en) | Early-strength cement grinding aid | |
| CN113262422A (en) | Combined dealkalizing agent and method for combined dealkalized red mud | |
| CN108383407B (en) | Cement grinding aid and method for preparing same by using chemical waste liquid | |
| CN115321871B (en) | Mineral admixture grinding-aid excitant and preparation method and application thereof | |
| CN110407502A (en) | A kind of cement grinding aid and preparation method thereof of high reunion performance | |
| CN110407504A (en) | A kind of modification cement grinding aid and preparation method thereof based on the glycerol by waste liquid |
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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210903 Address after: 214200 Guanlin town chemical industry concentration area, Yixing City, Wuxi City, Jiangsu Province Applicant after: Yixing Guoshun environmental protection new material technology Co.,Ltd. Address before: 214200 room 105, No. 8-99, Gonghe new village, Yicheng street, Yixing City, Wuxi City, Jiangsu Province Applicant before: Jiang Yiping |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |