CN113461350B - Vertical mill powder bed stabilizer and preparation method and application thereof - Google Patents

Vertical mill powder bed stabilizer and preparation method and application thereof Download PDF

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Publication number
CN113461350B
CN113461350B CN202110772268.7A CN202110772268A CN113461350B CN 113461350 B CN113461350 B CN 113461350B CN 202110772268 A CN202110772268 A CN 202110772268A CN 113461350 B CN113461350 B CN 113461350B
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stabilizer
mill
vertical mill
material layer
modified starch
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CN113461350A (en
Inventor
宋南京
许庚友
陈烽
司宏振
张辉
曾君
吕晓
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Anhui Conch Material Technology Co ltd
Ningbo Conch New Material Technology Co ltd
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Ningbo Conch New Material Technology Co ltd
Anhui Conch New Materials Technology Co Ltd
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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
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
    • C04B7/42—Active ingredients added before, or during, the burning process
    • C04B7/428—Organic materials
    • 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

Abstract

The invention provides a vertical mill powder bed stabilizer and a preparation method and application thereof, wherein the vertical mill powder bed stabilizer comprises the following raw materials: 10-15% of modified starch, 5-10% of sorbitol ester, 5-10% of alkylphenol polyoxyethylene sulfosuccinate, 3-5% of fatty glyceride, 1-3% of polymeric alcohol and the balance of water; compared with the prior art, the stabilizer provided by the invention has the advantages that the efficiency of the stabilizer reaches the best effect, the material fluidity can be obviously improved, the material layer thickness and the material flow rate are stabilized, the retention time of the materials in the mill is prolonged, the cement fineness and the specific surface area are improved, the cement yield is increased, and the vertical mill can stably produce under the condition of not spraying water.

Description

Vertical mill powder bed stabilizer and preparation method and application thereof
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a vertical mill powder bed stabilizer, and a preparation method and application thereof.
Background
The vertical mill is an ideal large-scale grinding device, is widely applied to the industries of cement, electric power, metallurgy, chemical industry, non-metal ore and the like, integrates crushing, drying, grinding and grading conveying into a whole, has high production efficiency, and can grind blocky, granular and powdery raw materials into required powdery materials. In the building material industry, compared with other grinding systems, the grinding by adopting the vertical grinding system has the advantages of simple process, convenient operation, high grinding efficiency, low unit power consumption, small maintenance workload and the like, and is widely applied to the preparation process of materials such as cement, slag, raw materials and the like.
The vertical mill adopts the principle of material layer grinding, and the vertical mill gathers materials between two pressurized surfaces together, and the materials are crushed and ground through the transmission and interaction of high pressure between particles. The vertical mill for grinding cement is mainly characterized in that a cement material is crushed by pressure between a grinding roller and a grinding disc, and then a fine powder product is obtained by powder selection and classification. In the grinding process of the vertical mill, the stability of a material layer between the grinding disc and the grinding roller is very important. The material layer is too thick, and effective pressure is difficult to form between the grinding disc and the grinding roller, so that the grinding efficiency is reduced, the material cannot be ground, the yield of the grinding machine is reduced, and the power consumption of grinding is increased; the material layer is too thin, the material is difficult to form a proper cake layer, and the vibration of the mill is caused, so that the mill is difficult to stably operate. In the actual production process of grinding cement by a vertical mill, due to the differences of grindability, particle morphology, moisture and the like of different materials, the condition of poor material layer stability can often appear, and for stabilizing the material layer thickness of the mill, the vibration of the mill is reduced, the operation of the mill is stabilized, and the material layer can be stabilized by adopting a method of spraying water into the mill according to the process running condition of the mill.
However, the drying cost of the system can be increased by spraying water in the mill, and meanwhile, due to the phenomenon that cement fine particles hydrate in advance at high temperature, cement agglomeration can occur in a cement warehouse on the one hand, cement storage is not facilitated, the quality of cement can be reduced to a certain extent on the other hand, and particularly the strength of the cement is adversely affected.
Disclosure of Invention
The invention aims to provide a material layer stabilizer for vertical mill grinding, which can improve the grindability and particle morphology of materials, stabilize the material layer thickness of the vertical mill grinding, reduce the vibration of a mill and stabilize the operation of the mill on the one hand; on the other hand, the material layer can be effectively stabilized under the condition of not spraying water, and the grinding efficiency and the product quality of the vertical mill are improved.
The invention also aims to provide a preparation method of the vertical mill powder bed stabilizer, which is a preparation method designed and matched according to a formula, and has the advantages of simple preparation method and low cost.
The last purpose of the invention is to provide the application of the stabilizer of the vertical mill material layer, which is used for vertical mill grinding of cement, slag, raw materials and industrial waste residues, can stabilize the material layer, improve the yield and has no requirement on water spraying; is especially suitable for cement grinding.
The specific technical scheme of the invention is as follows:
a material layer stabilizer for a vertical mill comprises the following raw materials in percentage by mass:
10 to 15 percent of modified starch
Sorbitol ester 5-10%
5 to 10 percent of alkylphenol polyoxyethylene ether sulfosuccinate
3 to 5 percent of fatty glyceride
1 to 3 percent of polymeric alcohol
The balance of water;
the modified starch is one of pregelatinized starch, maltodextrin, maltitol or xylitol, wherein maltitol is preferred;
the sorbitol ester is one of sorbitan monolaurate, polyoxyethylene sorbitan monooleate (Tween 80) or polyoxyethylene sorbitan monostearate, wherein the polyoxyethylene sorbitan monooleate (Tween 80) is preferred;
the fatty acid glyceride is one of glyceryl monostearate, glyceryl monolaurate or glyceryl monooleate, wherein glyceryl monostearate is preferred.
The polymeric alcohol is polyethylene glycol or polypropylene glycol with molecular weight less than 600, wherein polypropylene glycol is preferred.
The preparation method of the vertical mill powder bed stabilizer comprises the following steps:
1) heating water with the formula amount, heating, stirring the sorbitol ester, alkylphenol polyoxyethylene ether sulfosuccinate and fatty glyceride with the formula amount to obtain a mixed ester solution;
2) and under the condition of heat preservation, sequentially adding the polymer alcohol and the modified starch in the formula ratio into the mixed ester, and uniformly stirring to obtain the modified starch.
The heating temperature rise in the step 1) refers to heating to 45-55 ℃;
the stirring time in the step 1) is 25-35 min;
in the step 2), the polyalcohol with the formula amount is firstly added into the mixed ester under the heat preservation condition of 45-55 ℃, and finally the modified starch with the formula amount is added, so that the raw material dissolution speed is increased, and the production efficiency is improved.
And (3) adding the modified starch in the step 2) at last, otherwise, the dissolution speed of other materials is very low, and the reaction is influenced.
The invention also provides application of the stabilizer for the material layer of the vertical mill, which is used for vertical mill grinding. Preferably, the grinding mill is used for vertical mill grinding of cement, slag, raw meal and industrial waste residue.
The specific application method comprises the following steps: the addition amount of the stabilizer of the material layer of the vertical mill is 0.1 percent of the quality of the milled materials.
The modified starch is a natural high molecular compound of polysaccharide substances formed by polycondensation of glucose, a large number of reactive hydroxyl groups exist in the molecular chain of the modified starch, and new functional groups are introduced on the starch molecules on the basis of the inherent characteristics of the natural starch, so that the natural characteristics of the starch are changed, and the modified starch is more suitable for the requirements of certain applications. The inventor finds that: the modified starch is characterized in that ether bonds are introduced on the basis of keeping a large number of hydroxyl groups of the original starch, and the modified starch has certain binding power, so that when the modified starch is applied to a vertical mill for grinding materials, on one hand, the Van der Waals force among fine powder particles of the materials is increased, and on the other hand, a molecular network structure of the modified starch forms a bridging effect among the fine powder particles, so that the material particles can form a stable material layer in the grinding process; the sorbitol ester substance is used as an emulsifier, the molecular structure of the sorbitol ester substance is a long carbon chain structure containing ether bonds and ester bonds, the sorbitol ester substance can complex mineral components of materials such as cement, the electrostatic repulsion force of the materials in the grinding process is reduced, the internal friction force among material particles is increased, and the thickness of a material layer is stabilized; the alkylphenol polyoxyethylene ether sulfosuccinate is a nonionic surfactant, has excellent wetting and penetrating effects, can effectively penetrate into material particles, also has the effects of wetting and reducing static electricity, can disperse fine powder particles adhered to blocks, plays a role in dispersing in the subsequent material powder selecting and dispersing process while ensuring the formation of a stable material layer, and improves the powder selecting efficiency, thereby improving the yield; the fatty glyceride is prepared by the esterification reaction of long-chain fatty acid containing C16-C21 and glycerol, is also a nonionic surfactant, can play a role together with alkylphenol polyoxyethylene ether sulfosuccinate, and simultaneously prevents the modified starch from aging in the material grinding process, thereby ensuring the performance of the modified starch; the polyalcohol is a polymer of propylene glycol or ethylene glycol, the molecular tail end contains hydroxyl, the main chain is of a linear carbon chain structure, the surface tension reducing effect is achieved, air bubbles among particles in the material layer can be eliminated in the material grinding process, the elimination of air in the material layer is facilitated, gaps among fine powder material particles are reduced, and the material layer is compact and stable.
The lipid substance and the alcohol substance in the formula are surfactants, so that the friction surface energy can be reduced, the friction resistance between materials and equipment can be effectively reduced, the friction heat can be reduced, and the cooling, cleaning, harmful substance erosion prevention and equipment loss reduction effects can be realized.
Each component in the material layer stabilizer of the vertical mill can play an individual role respectively and simultaneously generate a synergistic superposition effect, so that the efficiency of the stabilizer achieves the best effect, the material flowability can be obviously improved, the material layer thickness and the material flow rate are stabilized, the retention time of the material in the mill is prolonged, the material fineness and the specific surface area are improved, the hourly output of the material mill is improved, and the vertical mill can be stably produced under the condition of not spraying water.
Compared with the prior art, the invention has the beneficial effects that:
1. the stabilizer for the material layer of the vertical mill is applied to the vertical mill for milling materials such as cement, slag, raw materials and the like, can effectively stabilize the thickness of the material layer and the flow rate of the materials, keep the balance and stability of the circulation of the materials in the mill, reduce the vibration of the mill, facilitate the control of the production process, obviously improve the milling efficiency and reduce the power consumption of milling.
2) The mixing amount of the grinding material is 0.1 percent, the vibration amplitude of a grinding machine is obviously reduced under the condition of unchanging grinding technological parameters, water does not need to be sprayed in the production process to stabilize a material layer, and the cement grinding material is particularly applied to cement grinding, so that the influence on the performance of cement caused by early hydration of cement due to water spraying can be avoided, and the phenomenon of caking in storage can be avoided.
3) The preparation method of the vertical mill material layer stabilizer is simple, the raw materials are green and environment-friendly, the lubricating effect is achieved, and the service life of equipment is prolonged.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Test materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
The specific techniques or conditions not specified in the examples can be performed according to the techniques or conditions described in the literature in the field or according to the product specification.
The polyethylene glycol or polypropylene glycol used in the present invention has a molecular weight of less than 600.
Example 1
A material layer stabilizer for a vertical mill is composed of the following raw materials in percentage by weight: 12% of pregelatinized starch, 5% of sorbitan monolaurate, 5% of alkylphenol polyoxyethylene ether sulfosuccinate, 3% of glyceryl monostearate, 1% of polyethylene glycol and the balance of water;
the preparation method of the vertical mill grinding slurry layer stabilizer comprises the following steps:
1) weighing the raw materials according to the weight percentage;
2) firstly, adding water of a formula into a reaction kettle, starting stirring, heating to 50 ℃, sequentially adding sorbitan monolaurate, alkylphenol polyoxyethylene ether sulfosuccinate and glyceryl monostearate into the reaction kettle, and stirring for 30min to obtain a mixed ester solution;
3) under the condition of 50 ℃ heat preservation, polyethylene glycol is added into the mixed ester solution, then the pregelatinized starch is added, and the mixture is stirred uniformly, so that the material layer stabilizer of the vertical mill powder can be prepared.
Example 2
A material layer stabilizer for a vertical mill is composed of the following raw materials in percentage by weight: 12% of maltodextrin, 8% of polyoxyethylene sorbitan monooleate, 8% of alkylphenol polyoxyethylene ether sulfosuccinate, 4% of glycerol monolaurate, 2% of polypropylene glycol and the balance of water;
the preparation process has the same technological parameters as example 1.
Example 3
A material layer stabilizer for a vertical mill is composed of the following raw materials in percentage by weight: 15% of maltitol, 10% of polyoxyethylene sorbitan monooleate, 10% of alkylphenol polyoxyethylene ether sulfosuccinate, 5% of glycerin monostearate, 3% of polypropylene glycol and the balance of water;
the preparation process has the same technological parameters as example 1.
Example 4
A material layer stabilizer for a vertical mill is composed of the following raw materials in percentage by weight: 10% of maltitol, 8% of polyoxyethylene sorbitan monooleate, 5% of alkylphenol polyoxyethylene ether sulfosuccinate, 4% of glycerin monostearate, 2% of polypropylene glycol and the balance of water;
the preparation process has the same technological parameters as example 1.
Example 5
A material layer stabilizer for a vertical mill is composed of the following raw materials in percentage by weight: 12% of maltitol, 10% of polyoxyethylene sorbitan monostearate, 8% of alkylphenol polyoxyethylene ether sulfosuccinate, 3% of glycerol monooleate, 1% of polypropylene glycol and the balance of water;
the preparation process has the same technological parameters as example 1.
Example 6
A material layer stabilizer for a vertical mill is composed of the following raw materials in percentage by weight: 15% of xylitol, 5% of polyoxyethylene sorbitan monostearate, 10% of alkylphenol polyoxyethylene ether sulfosuccinate, 5% of glycerol monolaurate, 3% of polyethylene glycol and the balance of water;
the preparation method is the same as example 1.
Comparative example 1
A material layer stabilizer for a vertical mill is composed of the following raw materials in percentage by weight: 5% of polyoxyethylene sorbitan monostearate, 10% of alkylphenol polyoxyethylene ether sulfosuccinate, 5% of glycerol monolaurate, 3% of polyethylene glycol and the balance of water;
the procedure was as in example 1 except that modified starch was not added.
Comparative example 2
A material layer stabilizer for a vertical mill is composed of the following raw materials in percentage by weight: 5% of xylitol, 2% of polyoxyethylene sorbitan monostearate, 3% of alkylphenol polyoxyethylene ether sulfosuccinate, 5% of glycerol monolaurate, 3% of polyethylene glycol and the balance of water;
the preparation method is the same as example 1.
Comparative example 3
A material layer stabilizer for a vertical mill is composed of the following raw materials in percentage by weight: 15% of xylitol, 5% of polyoxyethylene sorbitan monostearate, 10% of alkylphenol polyoxyethylene ether sulfosuccinate, 5% of glycerol monolaurate, 3% of polyethylene glycol and the balance of water;
the preparation method of the vertical mill grinding slurry layer stabilizer comprises the following steps:
1) weighing the raw materials according to the weight percentage;
2) firstly, adding water of a formula into a reaction kettle, starting stirring, heating to 35 ℃, sequentially adding sorbitan monolaurate, alkylphenol polyoxyethylene ether sulfosuccinate and glyceryl monostearate into the reaction kettle, and stirring for 30min to obtain a mixed ester solution;
3) under the condition of heat preservation at 40 ℃, polyethylene glycol is added into the mixed ester solution, xylitol is added, and the mixture is stirred uniformly, so that the material layer stabilizer for the vertical mill powder is prepared.
Experimental testing
Inventive examples 1-6 and comparative examples 1-3 were preparedThe material layer stabilizer is subjected to a grinding test in a vertical mill with the diameter of 3.75m, and the material ratio is as follows: clinker (77%) + gypsum (5.0%) + slag (8%) + limestone (10%); the blending amount of a stabilizer serving as an auxiliary agent in a grinding material layer of the vertical mill is 0.1%, the stabilizer is directly conveyed into the vertical mill through a liquid metering pump and sprayed on the material layer, and the metering pump is connected to a DCS control system in production through an interlocking control system, so that the automatic control of the blending amount is realized. Controlling the specific surface area of the cement to 335 +/-5 m2PerKg, the thickness and stability of the material layer in the mill for producing cement, the flow rate of the material, the fineness of the milled cement, the specific surface area and the change condition of machine hour yield are tested.
The test results are as follows:
the comparative sample 1 is a test in which no stabilizer is added in the mill and no water spray is generated in the mill, the comparative sample 2 is a test in which no stabilizer is added in the mill and no water spray is generated in the mill, the other tests are tests in which the stabilizers of the material layers of the invention and the examples are added, the physical compositions of the grinding objects of the comparative samples 1 and 2, the examples and the comparative examples, which are subjected to the grinding test, are the same, and the specific results are shown in table 1.
Table 1 cement grinding test results
Figure BDA0003154149910000091
As can be seen from the test results in Table 1, when the comparative sample 1 is compared with the comparative sample 2, the mill has larger vibration and cannot stably produce under the condition that water is not sprayed in the mill, and stable production can be realized after the water is sprayed in the mill; after the material layer stabilizer of the embodiment is added, compared with the comparative sample 2, the stable operation of the mill can be realized under the condition that water is not sprayed in the mill, the vibration of the mill is obviously reduced, the machine hour yield can be improved by more than 4.4 percent, and the machine hour yield of the embodiment 3 can be improved by 11.1 percent. Comparative example 1 without the addition of modified starch material, the mill had to have a water jet of 3.8m3The production can be stabilized only by h, and the output per hour is reduced by 7t/h compared with the implementation 6; comparative example 2 the content of active ingredient was low and the requirement of the present invention was not satisfied, and the mill had to spray 4.0m of water3Stable production at a hour, comparing with example 6, hourly productionThe drop is 8 t/h.
In conclusion, when the stabilizer for the material layer of the vertical mill is used for the material grinding process of the vertical mill, the mixing amount of the stabilizer in the material is 0.1%, and particularly when cement is ground, on the premise of ensuring the quality of a cement product, water can not be sprayed in the mill, the thickness of the material layer in the mill can be effectively stabilized, the vibration of the mill is reduced, the balance and stability of the circulation of the material in the mill are kept, the production process of the cement grinding process of the vertical mill is convenient to control, the hourly output of the cement grinding machine is improved, and the power consumption of grinding is reduced.

Claims (10)

1. The vertical mill feed layer stabilizer is characterized by comprising the following raw materials in percentage by mass:
10 to 15 percent of modified starch
Sorbitol ester 5-10%
5 to 10 percent of alkylphenol polyoxyethylene ether sulfosuccinate
3 to 5 percent of fatty glyceride
1 to 3 percent of polymeric alcohol
The balance being water.
2. The mill batch stabilizer of claim 1, wherein the modified starch is one of pregelatinized starch, maltodextrin, maltitol or xylitol.
3. The mill grind bed stabilizer according to claim 1 or 2, wherein the sorbitol ester is one of sorbitan monolaurate, polyoxyethylene sorbitan monooleate, or polyoxyethylene sorbitan monostearate.
4. The mill batch stabilizer according to claim 1 or 2, wherein the polymeric alcohol is polyethylene glycol or polypropylene glycol having a molecular weight of less than 600.
5. The mill batch stabilizer according to claim 1 or 2, wherein the fatty acid glyceride is one of glycerol monostearate, glycerol monolaurate and glycerol monooleate.
6. A method for preparing the mill batch stabilizer of any one of claims 1 to 5, wherein the method comprises the following steps:
1) heating water with the formula amount, heating, stirring the sorbitol ester, alkylphenol polyoxyethylene ether sulfosuccinate and fatty glyceride with the formula amount to obtain a mixed ester solution;
2) and under the condition of heat preservation, sequentially adding the polymer alcohol and the modified starch in the formula ratio into the mixed ester, and uniformly stirring to obtain the modified starch.
7. The method according to claim 6, wherein the heating to raise the temperature in step 1) is carried out to raise the temperature to 45-55 ℃.
8. The method according to claim 6 or 7, wherein the stirring time in step 1) is 25 to 35 min.
9. Use of the mill bed stabilizer of the vertical mill according to any one of claims 1 to 5 for a cement vertical mill.
10. Use of the stabilizer for the vertical mill bed in any of claims 1 to 5 for vertical milling of slag or raw meal.
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CN114057426B (en) * 2021-12-22 2022-08-26 安徽海螺新材料科技有限公司 Additive for cement production by vertical mill finish grinding process and preparation method thereof
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US4375987A (en) * 1981-11-23 1983-03-08 W. R. Grace & Co. Additive combination for hydraulic cement compositions
JP4155616B2 (en) * 1998-01-20 2008-09-24 株式会社日本触媒 Cement admixture, cement composition using the same, and preparation method thereof
WO2009144081A1 (en) * 2008-04-16 2009-12-03 Akzo Nobel N.V. Rheology influencing additive for mineral building materials
CN105731855A (en) * 2016-01-11 2016-07-06 东源县弘朝科技有限公司 Vertical mill slag grinding aid and preparation method thereof
US20210122675A1 (en) * 2018-01-05 2021-04-29 Gcp Applied Technologies Inc. Grinding stabilizing additive for vertical roller mills
CN110330258B (en) * 2019-07-02 2021-05-18 安徽海螺新材料科技有限公司 Active excitation type grinding aid for grinding slag in vertical mill

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