CN115041253A - Raw material coal-saving auxiliary agent for cement clinker firing process and preparation method thereof - Google Patents
Raw material coal-saving auxiliary agent for cement clinker firing process and preparation method thereof Download PDFInfo
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- CN115041253A CN115041253A CN202210617571.4A CN202210617571A CN115041253A CN 115041253 A CN115041253 A CN 115041253A CN 202210617571 A CN202210617571 A CN 202210617571A CN 115041253 A CN115041253 A CN 115041253A
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- raw material
- auxiliary agent
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- material coal
- firing process
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- 239000002994 raw material Substances 0.000 title claims abstract description 49
- 239000004568 cement Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000012752 auxiliary agent Substances 0.000 title claims abstract description 23
- 230000008569 process Effects 0.000 title claims abstract description 21
- 238000010304 firing Methods 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 22
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000003756 stirring Methods 0.000 claims abstract description 21
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 11
- 150000002191 fatty alcohols Chemical class 0.000 claims abstract description 11
- 230000003301 hydrolyzing effect Effects 0.000 claims abstract description 11
- 238000007142 ring opening reaction Methods 0.000 claims abstract description 11
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 11
- VGTPCRGMBIAPIM-UHFFFAOYSA-M sodium thiocyanate Chemical compound [Na+].[S-]C#N VGTPCRGMBIAPIM-UHFFFAOYSA-M 0.000 claims abstract description 11
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims abstract description 8
- 238000011049 filling Methods 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000007873 sieving Methods 0.000 claims abstract description 6
- 238000003860 storage Methods 0.000 claims description 19
- 239000007787 solid Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 9
- 238000000227 grinding Methods 0.000 abstract description 8
- 238000000354 decomposition reaction Methods 0.000 abstract description 7
- 239000000047 product Substances 0.000 description 15
- 239000000654 additive Substances 0.000 description 9
- 230000000996 additive effect Effects 0.000 description 8
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000003245 coal Substances 0.000 description 5
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2/00—Crushing or disintegrating by gyratory or cone crushers
- B02C2/10—Crushing or disintegrating by gyratory or cone crushers concentrically moved; Bell crushers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention relates to a raw material coal-saving auxiliary agent used in the process of firing cement clinker and a preparation method thereof, and the raw material coal-saving auxiliary agent comprises the following components: sodium dodecyl sulfate, fatty alcohol, sodium thiocyanate, sodium carbonate, triethanolamine and caprolactam. The preparation method comprises the following steps: 1) hydrolytic ring opening; 2) mixing and stirring; 3) sieving and filling. The invention has the advantages that: in the process of grinding the cement raw materials by the tube mill and the vertical mill, the machine hour output of the mill is improved, the grinding power consumption is reduced, the decomposition rate of the cement raw materials is improved, the clinker quality is improved, the kiln output is improved, and the like, so that the energy is effectively saved, the emission is reduced, and the green and low-carbon development is promoted.
Description
Technical Field
The invention relates to the technical field of cement production additives, in particular to a raw material coal-saving additive used in the cement clinker firing process and a preparation method thereof.
Background
The carbon dioxide emission strives to reach the peak carbon level by 2030, and the carbon neutralization is tried to be realized by 2060; "make carbon peak-reaching and carbon neutralization work" is listed as one of the key tasks; the fourteen-five program also puts the two-carbon work into the category of speeding up the development of green and low carbon.
When the tube mill and the vertical mill grind the cement raw materials, the problems of low machine hour output, high grinding power consumption, low decomposition rate of the cement raw materials, uneven clinker quality, low kiln output and the like of the mill need to be solved.
Therefore, a raw material coal-saving auxiliary agent used in the cement clinker firing process and a preparation method thereof need to be researched.
Disclosure of Invention
The invention aims to provide a raw material coal-saving auxiliary agent used in the process of firing cement clinker and a preparation method thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a raw material coal-saving auxiliary agent used in the cement clinker firing process comprises the following components in parts by weight: 1-5 parts of sodium dodecyl sulfate, 1-10 parts of fatty alcohol, 2-8 parts of sodium thiocyanate, 1-3 parts of sodium carbonate, 2-10 parts of triethanolamine and 20-35 parts of caprolactam.
A preparation method of a raw material coal-saving auxiliary agent used in the cement clinker firing process specifically comprises the following steps:
1) and (3) hydrolytic ring opening: taking a certain amount of water to enter a reaction kettle, then starting stirring, heating to 70 ℃, and adding sodium dodecyl sulfate for hydrolytic ring opening;
2) mixing and stirring: sequentially adding fatty alcohol, sodium thiocyanate and sodium carbonate into the solution, stirring for 1-1.5 hours, adding triethanolamine and caprolactam, and continuously stirring for 1 hour;
3) sieving and filling: filtering the solution, checking and accepting, introducing into a finished product storage tank, and storing in a sealed manner.
As a preferable scheme, the acceptance indexes in the step 3) comprise density, pH value and solid content.
As a preferable scheme, the material of the storage tank in the step 3) is one of plastic and stainless steel.
As a preferable scheme, the storage equipment adopted for storage in the step 3) is provided with a circulating device, the product is periodically subjected to circulating treatment, the uniformity of the product is ensured, and the storage temperature is-10 ℃ to 50 ℃.
The invention has the advantages that: in the process of grinding the cement raw materials by the tube mill and the vertical mill, the machine hour output of the mill is improved, the grinding power consumption is reduced, the decomposition rate of the cement raw materials is improved, the clinker quality is improved, the kiln output is improved, and the like, so that the energy is effectively saved, the emission is reduced, and the green and low-carbon development is promoted.
Detailed Description
The invention is illustrated below by means of specific examples, without being restricted thereto.
Example 1
A raw material coal-saving auxiliary agent used in the cement clinker firing process comprises the following components in parts by weight: 1 part of lauryl sodium sulfate, 1 part of fatty alcohol, 2 parts of sodium thiocyanate, 1 part of sodium carbonate, 2 parts of triethanolamine and 35 parts of caprolactam.
A preparation method of a raw material coal-saving auxiliary agent used in the cement clinker firing process specifically comprises the following steps:
1) and (3) hydrolytic ring opening: taking a certain amount of water to enter a reaction kettle, then starting stirring, heating to 70 ℃, and adding sodium dodecyl sulfate for hydrolytic ring opening;
2) mixing and stirring: sequentially adding fatty alcohol, sodium thiocyanate and sodium carbonate into the solution, stirring for 1 hour, then adding triethanolamine and caprolactam, and continuing stirring for 1 hour;
3) sieving and filling: filtering the solution, checking and accepting indexes such as density, pH value, solid content and the like, then guiding the solution into a finished product plastic storage tank, storing the solution in a closed manner, arranging a circulating device in storage equipment, and periodically carrying out circulating treatment on the product to ensure the uniformity of the product, wherein the storage temperature is-10-50 ℃.
Example 2
A raw material coal-saving auxiliary agent used in the cement clinker firing process comprises the following components in parts by weight: 5 parts of lauryl sodium sulfate, 10 parts of fatty alcohol, 8 parts of sodium thiocyanate, 3 parts of sodium carbonate, 10 parts of triethanolamine and 20 parts of caprolactam.
A preparation method of a raw material coal-saving auxiliary agent used in the cement clinker firing process specifically comprises the following steps:
1) and (3) hydrolytic ring opening: taking a certain amount of water to enter a reaction kettle, then starting stirring, heating to 70 ℃, and adding sodium dodecyl sulfate for hydrolytic ring opening;
2) mixing and stirring: sequentially adding fatty alcohol, sodium thiocyanate and sodium carbonate into the solution, stirring for 1.5 hours, then adding triethanolamine and caprolactam, and continuing stirring for 1 hour;
3) sieving and filling: filtering the solution, checking and accepting indexes such as density, pH value, solid content and the like, then guiding the solution into a finished stainless steel storage tank, storing the solution in a closed manner, arranging a circulating device in storage equipment, and periodically performing circulating treatment on the product to ensure the uniformity of the product, wherein the storage temperature is-10-50 ℃.
Example 3
A raw material coal-saving auxiliary agent used in the cement clinker firing process comprises the following components in parts by weight: 3 parts of lauryl sodium sulfate, 5 parts of fatty alcohol, 5 parts of sodium thiocyanate, 2 parts of sodium carbonate, 6 parts of triethanolamine and 28 parts of caprolactam.
A preparation method of a raw material coal-saving auxiliary agent used in the cement clinker firing process specifically comprises the following steps:
1) and (3) hydrolytic ring opening: taking a certain amount of water to enter a reaction kettle, then starting stirring, heating to 70 ℃, and adding sodium dodecyl sulfate for hydrolytic ring opening;
2) mixing and stirring: sequentially adding fatty alcohol, sodium thiocyanate and sodium carbonate into the solution, stirring for 1.5 hours, then adding triethanolamine and caprolactam, and continuing stirring for 1 hour;
3) sieving and filling: filtering the solution, checking and accepting indexes such as density, pH value, solid content and the like, then guiding the solution into a finished stainless steel storage tank, storing the solution in a closed manner, arranging a circulating device in storage equipment, and periodically performing circulating treatment on the product to ensure the uniformity of the product, wherein the storage temperature is-10-50 ℃.
The coal-saving additive for cement raw material is a liquid product, is generally brown and non-transparent, has no pungent smell, and does not damage human health. The use in cement raw meal does not affect the ingredients of the cement raw meal.
After the raw material coal-saving additive is adopted, the decomposition rate of the cement raw material is improved, the quality of clinker is improved, the total amount of sulfur dioxide emission in kiln tail waste gas is reduced, and the coal consumption is reduced. The problem of insufficient supply of cement raw materials is solved, and the equipment maintenance cost is reduced.
The invention can obviously reduce the surplus of cement raw materials of 0.08mm and 0.2mm through the action of a chemical mechanical process, improve the dispersion degree of the raw materials and optimize the grain composition. Finally, the purposes of energy saving, consumption reduction and efficiency improvement are achieved. After the raw material coal-saving additive is adopted, the coal-carbon cost can be reduced, the yield of a raw material mill can be improved by 2-5%, the clinker strength can be improved by more than 1 MPa in 3 days, the clinker strength can be improved by more than 1.5 MPa in 28 days, the cement clinker kiln yield can be improved, or the material coal can be saved by more than 5-10 kg, and the standard coal consumption can be reduced by more than 2.5-6.5 kg.
The cement raw material grinding machine is suitable for grinding cement raw materials by a tubular mill and a vertical mill, the machine hour output of the mill is improved, the grinding power consumption is reduced, the decomposition rate of the cement raw materials is improved, the clinker quality is improved, the kiln output is improved, and the like.
When the coal-saving additive is used for producing cement raw materials by a tubular mill, under the condition of keeping the fineness of the cement raw materials consistent, the coal-saving additive can improve the hourly output of the mill by more than 10 percent, reduce the power consumption, improve the decomposition rate of the cement raw materials, improve the quality of clinker, reduce the total emission amount of sulfur dioxide in kiln tail waste gas and reduce the coal consumption. The problem of insufficient supply of cement raw materials is solved, and the equipment maintenance cost is reduced.
When the coal-saving additive is used for producing cement raw materials by a vertical mill, under the condition of keeping the fineness of the cement raw materials consistent, the coal-saving additive can improve the hourly output of the mill by 5-10 percent, reduce the power consumption, stabilize the material layer thickness of the mill, reduce the vibration speed of the mill, improve the decomposition rate of the cement raw materials, improve the quality of clinker, reduce the total emission amount of sulfur dioxide in kiln tail waste gas and reduce the coal consumption. The problem of insufficient supply of cement raw materials is solved, and the equipment maintenance cost is reduced.
Product parameters are as follows:
specification: 250 kg/barrel, 1 ton/barrel and three specifications of bulk;
density: (20 ℃. + -. 1 ℃): 1.15-1.26(g/cm 3);
pH value: (20 ℃. + -. 1 ℃): 6-9;
solid content: 36 ± 1 (%);
the shelf life of the product is 12 months;
recommended dosage: 0.01-0.03% (m/m) of the cement raw material.
The adding method during use comprises the following steps:
1. when the adding height does not need to be lifted, the metering pump can be directly used for metering and adding;
2. when the addition height of the lifting aid is required, the lifting aid is generally added by a two-stage pumping method.
Matters of attention
The auxiliary agent should be used after being checked to be qualified. The acceptance inspection method comprises the following steps:
checking and accepting homogeneity, detecting the density and pH value of the new raw material coal-saving auxiliary agent, and judging whether each index is within an allowable error range;
secondly, when the barreled raw material coal-saving auxiliary agent is transported and stored, the barrel raw material coal-saving auxiliary agent is prevented from falling, smashing and being extruded by external force, and the stacking height is not more than two barrels;
before use, the mark is checked and then the sealing cover is opened, and the product and the model are confirmed to be correct and then put into use;
(IV) when the product is used, when the ambient temperature is lower than-5 ℃ for 5 days continuously, heat preservation measures should be taken to prevent the viscosity of the product from increasing to influence normal use
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A raw material coal-saving auxiliary agent used in the cement clinker firing process is characterized by comprising the following components in parts by weight: 1-5 parts of sodium dodecyl sulfate, 1-10 parts of fatty alcohol, 2-8 parts of sodium thiocyanate, 1-3 parts of sodium carbonate, 2-10 parts of triethanolamine and 20-35 parts of caprolactam.
2. A preparation method of a raw material coal-saving auxiliary agent used in the cement clinker firing process is characterized by comprising the following steps:
1) and (3) hydrolytic ring opening: taking a certain amount of water to enter a reaction kettle, then starting stirring, heating to 70 ℃, and adding sodium dodecyl sulfate for hydrolytic ring opening;
2) mixing and stirring: sequentially adding fatty alcohol, sodium thiocyanate and sodium carbonate into the solution, stirring for 1-1.5 hours, adding triethanolamine and caprolactam, and continuously stirring for 1 hour;
3) sieving and filling: filtering, checking and accepting the solution, introducing the solution into a finished product storage tank, and storing in a sealed manner.
3. The method for preparing a raw material coal-saving auxiliary agent used in the cement clinker firing process as claimed in claim 2, wherein: the acceptance indexes in the step 3) comprise density, pH value and solid content.
4. The method for preparing a raw material coal-saving auxiliary agent used in the cement clinker firing process as claimed in claim 2, wherein: the storage tank in the step 3) is made of one of plastic and stainless steel.
5. The method for preparing a raw material coal-saving auxiliary agent used in the cement clinker firing process as claimed in claim 2, wherein: and (3) arranging a circulating device in the storage equipment adopted for storage in the step 3), and periodically carrying out circulating treatment on the product to ensure the uniformity of the product, wherein the storage temperature is-10-50 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210617571.4A CN115041253A (en) | 2022-06-01 | 2022-06-01 | Raw material coal-saving auxiliary agent for cement clinker firing process and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210617571.4A CN115041253A (en) | 2022-06-01 | 2022-06-01 | Raw material coal-saving auxiliary agent for cement clinker firing process and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115041253A true CN115041253A (en) | 2022-09-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210617571.4A Pending CN115041253A (en) | 2022-06-01 | 2022-06-01 | Raw material coal-saving auxiliary agent for cement clinker firing process and preparation method thereof |
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| CN (1) | CN115041253A (en) |
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-
2022
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