CN112979202A - Liquid modified excitant for finely ground and granulated blast furnace slag powder and preparation method thereof - Google Patents
Liquid modified excitant for finely ground and granulated blast furnace slag powder and preparation method thereof Download PDFInfo
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- CN112979202A CN112979202A CN202110175804.5A CN202110175804A CN112979202A CN 112979202 A CN112979202 A CN 112979202A CN 202110175804 A CN202110175804 A CN 202110175804A CN 112979202 A CN112979202 A CN 112979202A
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- slag powder
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- furnace slag
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- 239000002893 slag Substances 0.000 title claims abstract description 128
- 239000000843 powder Substances 0.000 title claims abstract description 115
- 239000007788 liquid Substances 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title claims abstract description 35
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000002216 antistatic agent Substances 0.000 claims abstract description 24
- 239000004094 surface-active agent Substances 0.000 claims abstract description 23
- 238000000227 grinding Methods 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 239000003607 modifier Substances 0.000 claims abstract description 17
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 56
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 54
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 48
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 48
- 230000004048 modification Effects 0.000 claims description 41
- 238000012986 modification Methods 0.000 claims description 41
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 38
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 36
- 239000011259 mixed solution Substances 0.000 claims description 28
- 239000011780 sodium chloride Substances 0.000 claims description 28
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 28
- 235000011152 sodium sulphate Nutrition 0.000 claims description 28
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 27
- 229930006000 Sucrose Natural products 0.000 claims description 27
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims description 24
- 229910001388 sodium aluminate Inorganic materials 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 22
- 238000003756 stirring Methods 0.000 claims description 21
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 19
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 19
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 19
- 239000000600 sorbitol Substances 0.000 claims description 19
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 claims description 16
- 229920001732 Lignosulfonate Polymers 0.000 claims description 16
- 239000005720 sucrose Substances 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 14
- 230000002708 enhancing effect Effects 0.000 claims description 9
- 229920005551 calcium lignosulfonate Polymers 0.000 claims description 8
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical group [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 235000011187 glycerol Nutrition 0.000 claims 3
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 28
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000011049 filling Methods 0.000 abstract description 8
- 230000003334 potential effect Effects 0.000 abstract description 3
- 239000004567 concrete Substances 0.000 description 24
- 229960004793 sucrose Drugs 0.000 description 24
- 239000004568 cement Substances 0.000 description 9
- 150000003839 salts Chemical class 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 150000001720 carbohydrates Chemical group 0.000 description 5
- 230000036571 hydration Effects 0.000 description 5
- 238000006703 hydration reaction Methods 0.000 description 5
- 239000011344 liquid material Substances 0.000 description 5
- 239000011573 trace mineral Substances 0.000 description 5
- 235000013619 trace mineral Nutrition 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 239000012190 activator Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000011374 ultra-high-performance concrete Substances 0.000 description 1
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
Abstract
The invention belongs to the field of excitants and preparation thereof, and discloses a liquid modified excitant for finely grinding and granulating blast furnace slag powder and a preparation method thereof, wherein the liquid modified excitant comprises the following preparation raw materials: modifier, surfactant, antistatic agent, reinforcing excitant, pH value regulator and water; the liquid modified excitant can fully exert the potential activity of the ground granulated blast furnace slag powder, greatly improve the strength and the comprehensive performance of the prepared ground slag powder, reduce the water demand of the slag powder, enhance the filling effect of the slag powder, expand the application range and the field of the ground slag powder, improve the hourly output of the production and the preparation of the slag powder and reduce the power consumption of the preparation and the production; the preparation method is simple and easy to operate and implement.
Description
Technical Field
The invention relates to an excitant and the preparation field thereof, in particular to a liquid modified excitant for finely grinding and granulating blast furnace slag powder and a preparation method thereof.
Background
The method has the advantages of dissolving the industrial waste slag, realizing the resource utilization of the industrial waste slag, realizing green development, developing the application value of the granulated blast furnace slag powder by finely grinding the granulated blast furnace slag powder and improving the activity excavation of the slag powder, and improving the technical level of the application of the granulated blast furnace slag. Granulated blast furnace slag powder is produced by grinding slag to certain fineness standard according to certain fineness requirement, and is used as important inorganic non-metal raw material for cement, mortar, high-performance and ultra-high-performance concrete and other special engineering. The slag powder can fully exert the potential activity effect, improve the concrete strength, enhance the micro aggregate filling effect of the slag powder, improve the concrete workability, save the cost and realize the purposes of energy conservation, consumption reduction, green and low-carbon development.
The common slag has relatively low economic added value, and the vitreous activity effect, filling property, surface property and the like of the granulated blast furnace slag powder prepared by grinding and added with the modified excitant are greatly improved, so that the granulated blast furnace slag powder becomes a high-strength high-performance mineral admixture and a mineral additive, the added value of the slag is improved, and the resource utilization of the slag is greatly improved.
The liquid modified excitant can improve the activity of the slag powder and increase the early and later strength of the slag powder by participating in the preparation of the slag powder and adding the slag powder into slag; the water demand of the slag powder is reduced; enhancing the filling effect of the slag powder; the application range and the field of the slag powder are expanded; the machine-hour yield of the slag powder production and preparation is improved, and the power consumption of the preparation and production is reduced. According to the principle of usability, constructability and economy of the slag powder, the modified liquid excitant meeting the requirements of the high-strength and high-performance slag powder is researched and developed by modifying and exciting the slag powder, and has significant meaning. Therefore, it is an urgent technical problem to develop a slag powder modified liquid activator which can improve the activity and comprehensive performance of ground granulated blast furnace slag powder, improve the activity and comprehensive performance of slag powder, and reduce the comprehensive cost of concrete.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a liquid modification excitant for levigating and granulating blast furnace slag powder and a preparation method thereof, wherein the liquid modification excitant can fully exert the potential activity of the levigated and granulated blast furnace slag powder, greatly improve the strength and the comprehensive performance of the prepared levigated slag powder, reduce the water demand of the slag powder, enhance the filling effect of the slag powder, enlarge the application range and the field of the levigated slag powder, improve the hourly output of the slag powder production and preparation, and reduce the power consumption of the preparation production; the preparation method is simple and easy to operate and implement.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme.
The liquid modification excitant for grinding and granulating blast furnace slag powder comprises the following preparation raw materials: modifier, surfactant, antistatic agent, reinforcing excitant, pH value regulator and water.
Preferably, the modifier is lignosulfonate.
Further preferably, the lignosulfonate is calcium lignosulfonate.
Further preferably, the molecular weight of the lignosulfonate is 800-10000, and the reducing sugar is less than or equal to 30%.
Preferably, the surfactant is one or more of triethanolamine, glycerol, diethanol monoisopropanolamine, diethylene glycol and ethylene glycol.
Further preferably, the triethanolamine, the glycerol, the diethanol monoisopropanolamine, the diethylene glycol and the ethylene glycol are industrial organic reagents respectively, and the content of the industrial organic reagents is not less than 85%.
Preferably, the antistatic agent is sorbitol.
Preferably, the enhancing excitant is one or more of anhydrous sodium sulphate, aluminum sulfate, sodium aluminate, sodium chloride and sucrose.
Further preferably, the anhydrous sodium sulphate is in industrial grade, and the content is more than or equal to 99%.
Further preferably, the aluminum sulfate is industrial low-iron grade, the aluminum oxide is more than or equal to 15.8 percent, the ferric oxide is less than or equal to 0.05 percent, the pH value is more than or equal to 3.0, and the insoluble substance is less than or equal to 0.1 percent.
Further preferably, the sodium aluminate is industrial grade, and the content is more than or equal to 80%.
Further preferably, the sodium chloride is an industrial salt.
Preferably, the pH adjuster is sodium hydroxide.
Preferably, the raw materials are used in the following amounts: 1.0-6.0% of modifier, 5.0-25.0% of surfactant, 3.0-15% of antistatic agent, 20.0-30.0% of reinforcing excitant, 2.0-10.0% of pH value regulator and 45.0-70.0% of water.
Further preferably, the surfactant comprises: 5.0-10.0% of triethanolamine, 0-7.5% of glycerol, 0-5.0% of diethanol monoisopropanolamine, 2.0-7.5% of diethylene glycol and 2.0-7.5% of ethylene glycol, which account for the mass percentage of the liquid modification excitant.
Further preferably, the enhancer activator comprises: 0-6% of anhydrous sodium sulphate, 5.0-18.0% of aluminum sulfate, 0-6.0% of sodium aluminate, 3.0-15.0% of sodium chloride and 0-5.0% of sucrose, which account for the mass percentage of the liquid modification excitant.
(II) a preparation method of a liquid modification excitant for grinding and granulating blast furnace slag powder, which comprises the following steps:
step 1, respectively and sequentially dissolving sodium chloride, aluminum sulfate, sodium aluminate, anhydrous sodium sulphate and sucrose in an enhanced excitant in water to obtain an enhanced excitant solution;
step 2, fully mixing and uniformly stirring the antistatic agent and the reinforcing excitant solution to obtain a first mixed solution;
step 3, dissolving ethylene glycol, diethylene glycol, glycerol, triethanolamine and diethanol monoisopropanolamine in the surfactant in the first mixed solution respectively in sequence, and fully mixing and stirring uniformly to obtain a second mixed solution;
and 4, adding a pH regulator into the second mixed solution, and fully mixing and uniformly stirring to obtain the aqueous solution.
Preferably, in step 1, after each raw material in the enhancing excitant is completely and uniformly dissolved, the next raw material can be added.
Compared with the prior art, the invention has the beneficial effects that:
1) the liquid modification excitant can improve the activity of the ground slag powder and increase the early and later strength of the ground slag powder by participating in the production preparation of the ground slag powder and being added into the ground granulated blast furnace slag powder; the water requirement of the ground slag powder is reduced; enhancing the filling effect of the ground slag powder; the application range and the field of the ground slag powder are expanded; the machine hour yield of the production and preparation of the ground slag powder is improved, and the power consumption of the production and preparation of the ground slag powder is reduced.
2) The activity index and the like of the ground slag powder which is prepared by adding the liquid modified excitant and participating in the grinding of the granulated blast furnace slag are obviously improved, and the strength of the concrete prepared by the ground slag powder is improved; under the condition of ensuring that the state of the fresh concrete mixture is not changed, the water consumption of single concrete is reduced; the concrete has excellent working performance, pumping performance and construction performance; the liquid modification excitant has good adaptability with polycarboxylic acid and naphthalene additives; the concrete prepared by the slag powder ground by the modified excitant has better durability and microscopic performance.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention.
Example 1
A liquid modification excitant for levigating and granulating blast furnace slag powder comprises the following raw materials in percentage by mass: 1.8% of modifier, 17.3% of surfactant, 4.5% of antistatic agent, 20.9% of reinforcing excitant, 7.3% of sodium hydroxide and 48.2% of water. Wherein the modifier is lignosulfonate; the reinforcing excitant is sodium sulfate 2.1%, sodium chloride 3.6%, aluminum sulfate 11.6% and cane sugar 3.6%; the antistatic agent is sorbitol; the surfactant is triethanolamine 6.5%, glycerol 2.7%, diethylene glycol 3.6%, and ethylene glycol 4.5%.
Wherein the lignosulfonate is calcium lignosulfonate, has a molecular weight of 1000-8000, and contains reducing sugar 20%. The anhydrous sodium sulphate is in industrial grade and powdery, and the content is more than or equal to 99 percent. The aluminum sulfate is of industrial low-iron grade, the aluminum oxide is more than or equal to 15.8 percent, the ferric oxide is less than or equal to 0.05 percent, the pH value is more than or equal to 3.0, and the insoluble substance is less than or equal to 0.1 percent. Sodium chloride is an industrial salt. The sucrose is not refined at high temperature, has a certain carbohydrate function, and also contains a lot of trace elements. Sorbitol is an industrial-grade liquid material, and the content of sorbitol is more than or equal to 70 percent. Triethanolamine, glycerol, diethylene glycol and ethylene glycol which are industrial organic liquids with the content more than or equal to 85 percent.
The preparation method of the liquid modification excitant for granulating the blast furnace slag powder comprises the following steps:
step 1, adding the sodium chloride, the aluminum sulfate, the anhydrous sodium sulphate and the cane sugar which are used according to the formula in turn into water until the sodium chloride, the aluminum sulfate, the anhydrous sodium sulphate and the cane sugar are completely and uniformly dissolved, and then adding the next raw material until all the reinforcing excitant is dissolved in the water to obtain a reinforcing excitant solution.
And 2, fully mixing and uniformly stirring the antistatic agent and the reinforcing excitant solution according to the formula dosage to obtain a first mixed solution.
And 3, sequentially adding the ethylene glycol, the diethylene glycol, the glycerol and the triethanolamine according to the formula dosage into the first mixed solution, and fully mixing and uniformly stirring to obtain a second mixed solution.
And 4, fully mixing and uniformly stirring the sodium hydroxide with the formula dosage and the second mixed solution to obtain the liquid modification excitant SJFY1 for grinding and granulating the blast furnace slag powder.
Example 2
A liquid modification excitant for levigating and granulating blast furnace slag powder comprises the following raw materials in percentage by mass: 2.0 percent of modifier, 18.6 percent of surfactant, 4.9 percent of antistatic agent, 11.8 percent of reinforcing excitant and 62.7 percent of water. Wherein the modifier is lignosulfonate; the reinforcing excitant is 1.0 percent of anhydrous sodium sulphate, 4.0 percent of sodium chloride, 2.9 percent of sodium aluminate and 3.9 percent of cane sugar; the antistatic agent is sorbitol; the surfactant comprises triethanolamine 8.8%, glycerol 1.0%, diethylene glycol 4.9%, and ethylene glycol 3.9%.
Wherein the lignosulfonate is calcium lignosulfonate, has a molecular weight of 1000-8000, and contains reducing sugar 20%. The anhydrous sodium sulphate is in industrial grade and powdery, and the content is more than or equal to 99 percent. The sodium aluminate is industrial grade, and the content is more than or equal to 80 percent. Sodium chloride is an industrial salt. The sucrose is not refined at high temperature, has a certain carbohydrate function, and also contains a lot of trace elements. Sorbitol is an industrial-grade liquid material, and the content of sorbitol is more than or equal to 70 percent. Triethanolamine, glycerol, diethylene glycol and ethylene glycol which are industrial organic liquids with the content more than or equal to 85 percent.
The preparation method of the liquid modification excitant for granulating the blast furnace slag powder comprises the following steps:
step 1, sequentially adding the sodium chloride, the sodium aluminate, the anhydrous sodium sulphate and the sucrose into water according to the formula until the sodium chloride, the sodium aluminate, the anhydrous sodium sulphate and the sucrose are completely and uniformly dissolved, and then adding the next raw material until all the exciting enhancing agent is dissolved in the water to obtain the exciting enhancing agent solution.
And 2, fully mixing and uniformly stirring the antistatic agent and the reinforcing excitant solution according to the formula dosage to obtain a first mixed solution.
And 3, sequentially adding the ethylene glycol, the diethylene glycol, the glycerol and the triethanolamine according to the formula dosage into the first mixed solution, and fully mixing and uniformly stirring to obtain a second mixed solution.
And 4, fully mixing and uniformly stirring the sodium hydroxide with the formula dosage and the second mixed solution to obtain the liquid modification excitant SJFY2 for grinding and granulating the blast furnace slag powder.
Example 3
A liquid modification excitant for levigating and granulating blast furnace slag powder comprises the following raw materials in percentage by mass: 1.9% of modifier, 7.5% of surfactant, 4.7% of antistatic agent, 26.2% of reinforcing excitant, 4.7% of sodium hydroxide and 55.0% of water. Wherein the modifier is lignosulfonate; the reinforcing excitant is 5.5 percent of anhydrous sodium sulphate, 13.0 percent of sodium chloride, 4.0 percent of sodium aluminate and 3.7 percent of cane sugar; the antistatic agent is sorbitol; the surfactant comprises 5.5% of triethanolamine and 2.0% of diethanol monoisopropanolamine.
Wherein the lignosulfonate is calcium lignosulfonate, has a molecular weight of 1000-8000, and contains reducing sugar 20%. The anhydrous sodium sulphate is in industrial grade and powdery, and the content is more than or equal to 99 percent. The sodium aluminate is industrial grade, and the content is more than or equal to 80 percent. Sodium chloride is an industrial salt. The sucrose is not refined at high temperature, has a certain carbohydrate function, and also contains a lot of trace elements. Sorbitol is an industrial-grade liquid material, and the content of sorbitol is more than or equal to 70 percent. The triethanolamine and the diethanol monoisopropanolamine are industrial organic liquids, and the content is more than or equal to 85 percent.
The preparation method of the liquid modification excitant for granulating the blast furnace slag powder comprises the following steps:
step 1, sequentially adding the sodium chloride, the sodium aluminate, the anhydrous sodium sulphate and the sucrose into water according to the formula until the sodium chloride, the sodium aluminate, the anhydrous sodium sulphate and the sucrose are completely and uniformly dissolved, and then adding the next raw material until all the exciting enhancing agent is dissolved in the water to obtain the exciting enhancing agent solution.
And 2, fully mixing and uniformly stirring the antistatic agent and the reinforcing excitant solution according to the formula dosage to obtain a first mixed solution.
And 3, sequentially adding the triethanolamine and the diethanol monoisopropanolamine with the formula dosage into the first mixed solution, and fully mixing and stirring uniformly to obtain a second mixed solution.
And 4, fully mixing and uniformly stirring the sodium hydroxide with the formula dosage and the second mixed solution to obtain the liquid modification excitant SJFY3 for grinding and granulating the blast furnace slag powder.
Example 4
A liquid modification excitant for levigating and granulating blast furnace slag powder comprises the following raw materials in percentage by mass: 6% of modifier, 5% of surfactant, 3% of antistatic agent, 30% of reinforcing excitant, 2% of sodium hydroxide and 54.0% of water. Wherein the modifier is lignosulfonate; the reinforcing excitant is 4% of anhydrous sodium sulphate, 11% of aluminum sulfate, 4.0% of sodium chloride, 6.0% of sodium aluminate and 5% of cane sugar; the antistatic agent is sorbitol; the surfactant is diethylene glycol 2.5% and diethanol monoisopropanolamine 2.5%.
Wherein the lignosulfonate is calcium lignosulfonate, has a molecular weight of 1000-8000, and contains reducing sugar 20%. The anhydrous sodium sulphate is in industrial grade and powdery, and the content is more than or equal to 99 percent. The aluminum sulfate is of industrial low-iron grade, the aluminum oxide is more than or equal to 15.8 percent, the ferric oxide is less than or equal to 0.05 percent, the pH value is more than or equal to 3.0, and the insoluble substance is less than or equal to 0.1 percent. The sodium aluminate is industrial grade, and the content is more than or equal to 80 percent. Sodium chloride is an industrial salt. The sucrose is not refined at high temperature, has a certain carbohydrate function, and also contains a lot of trace elements. Sorbitol is an industrial-grade liquid material, and the content of sorbitol is more than or equal to 70 percent. Diethylene glycol and diethanol monoisopropanolamine are industrial organic liquids, and the content is more than or equal to 85 percent.
The preparation method of the liquid modification excitant for granulating the blast furnace slag powder comprises the following steps:
step 1, sequentially adding the sodium chloride, the aluminum sulfate, the sodium aluminate, the anhydrous sodium sulphate and the cane sugar which are used according to the formula in the amount until the sodium chloride, the aluminum sulfate, the sodium aluminate, the anhydrous sodium sulphate and the cane sugar are completely and uniformly dissolved, and then adding the next raw material until all the reinforcing excitant is dissolved in the water to obtain a reinforcing excitant solution.
And 2, fully mixing and uniformly stirring the antistatic agent and the reinforcing excitant solution according to the formula dosage to obtain a first mixed solution.
And 3, sequentially adding the diethylene glycol and the diethanol monoisopropanolamine which are used according to the formula and dosage into the first mixed solution, and fully mixing and stirring uniformly to obtain a second mixed solution.
And 4, fully mixing and uniformly stirring the sodium hydroxide with the formula dosage and the second mixed solution to obtain the liquid modification excitant for levigating and granulating the blast furnace slag powder.
Example 5
A liquid modification excitant for levigating and granulating blast furnace slag powder comprises the following raw materials in percentage by mass: 3% of modifier, 20% of surfactant, 6% of antistatic agent, 20% of reinforcing excitant, 6% of sodium hydroxide and 45.0% of water. Wherein the modifier is lignosulfonate; the reinforcing excitant is sodium sulfate 2%, aluminum sulfate 5%, sodium chloride 7.5%, sodium aluminate 3.0%, cane sugar 2.5%; the antistatic agent is sorbitol; the surfactant comprises triethanolamine 9.5%, diethanol monoisopropanolamine 3%, and ethylene glycol 7.5%.
Wherein the lignosulfonate is calcium lignosulfonate, has a molecular weight of 1000-8000, and contains reducing sugar 20%. The anhydrous sodium sulphate is in industrial grade and powdery, and the content is more than or equal to 99 percent. The aluminum sulfate is of industrial low-iron grade, the aluminum oxide is more than or equal to 15.8 percent, the ferric oxide is less than or equal to 0.05 percent, the pH value is more than or equal to 3.0, and the insoluble substance is less than or equal to 0.1 percent. The sodium aluminate is industrial grade, and the content is more than or equal to 80 percent. Sodium chloride is an industrial salt. The sucrose is not refined at high temperature, has a certain carbohydrate function, and also contains a lot of trace elements. Sorbitol is an industrial-grade liquid material, and the content of sorbitol is more than or equal to 70 percent. The triethanolamine, the diethanol monoisopropanolamine and the ethylene glycol are all industrial organic liquids, and the content is more than or equal to 85 percent.
The preparation method of the liquid modification excitant for granulating the blast furnace slag powder comprises the following steps:
step 1, sequentially adding the sodium chloride, the aluminum sulfate, the sodium aluminate, the anhydrous sodium sulphate and the cane sugar which are used according to the formula in the amount until the sodium chloride, the aluminum sulfate, the sodium aluminate, the anhydrous sodium sulphate and the cane sugar are completely and uniformly dissolved, and then adding the next raw material until all the reinforcing excitant is dissolved in the water to obtain a reinforcing excitant solution.
And 2, fully mixing and uniformly stirring the antistatic agent and the reinforcing excitant solution according to the formula dosage to obtain a first mixed solution.
And 3, sequentially adding the ethylene glycol, the triethanolamine and the diethanol monoisopropanolamine in the formula dosage into the first mixed solution, and fully mixing and stirring uniformly to obtain a second mixed solution.
And 4, fully mixing and uniformly stirring the sodium hydroxide with the formula dosage and the second mixed solution to obtain the liquid modification excitant for levigating and granulating the blast furnace slag powder.
The liquid modification excitant for finely grinding and granulating blast furnace slag has the following specific functions of raw materials:
the lignosulfonate is added into the ground slag powder, so that the grinding efficiency of the slag powder can be improved, the particle grading of the slag powder is improved, the dispersibility of the slag powder in concrete is enhanced, the viscosity of the concrete is reduced, and the early and later strength of the concrete is improved.
Sorbitol is added into the ground and granulated blast furnace slag powder and participates in the preparation of the slag powder, and the sorbitol is adsorbed on the surface of slag particles to eliminate the static charge on the surface of the slag powder, eliminate the agglomeration of the slag powder particles, improve the hydration rate of the slag powder particles for hydration and improve the early strength of concrete; the filling effect is exerted to reduce the porosity of the concrete and improve the fluidity of the concrete.
The anhydrous sodium sulphate, the sodium chloride and the sucrose are added into the granulated blast furnace slag and participate in the preparation of the slag powder, so that the early strength of the ground slag powder can be improved; the activity of the slag powder is improved, the filling effect of the fly ash slag powder is enhanced, the crystal nucleus can promote hydration in the early stage, the drying shrinkage can be reduced in the later stage, and the compactness and the mechanical property of the concrete are improved.
The aluminum sulfate and the sodium aluminate are added into the ground slag powder and participate in the preparation of the slag powder, so that the grinding efficiency is improved, and the early and later strength of the concrete is improved.
The surfactant has a complex reaction with cations in the slag powder and the cement, participates in and accelerates the hydration process of the cement, improves the strength of the cement, particularly contributes greatly to the improvement of the later strength of the set cement, and the cost performance of the liquid modified excitant can be properly adjusted by using different surfactants.
The sodium hydroxide is added into the ground slag powder and participates in the preparation of the slag powder, so that the modification excitant is kept to have better dispersibility, stability and uniformity, the uniformity of the ground slag powder dispersion is improved, the concrete fluidity can be improved, the concrete hydration process is accelerated, and the early strength and durability of the concrete are improved.
Test 1
The liquid modification excitant for finely ground granulated blast furnace slag powder obtained in examples 1 to 3 was subjected to performance testing, and the results are shown in table 1.
TABLE 1 liquid modification excitant Performance results Table for finely ground granulated blast furnace slag powder
| Numbering | Density of | pH value | Uniformity of | Stability of |
| Example 1 | 1.20 | 13 | Good effect | Good effect |
| Example 2 | 1.19 | 13 | Good effect | Good effect |
| Example 3 | 1.21 | 12 | Good effect | Good effect |
Test 2
The liquid modification excitant for levigating and granulating the blast furnace slag powder prepared in the above examples 1 to 3 is used for levigating and granulating the blast furnace slag powder by a phi 500 x 500 cement test mill in the same grinding time according to the mixing amount of 0.20% of the slag mass. The sieve residue, specific surface area and activity index of 0.045mm and 0.080mm square mesh sieves of 3 kinds of the prepared ground granulated blast furnace slag powder to which the liquid modification stimulant of the present invention is applied and the ground granulated blast furnace slag powder to which the liquid modification stimulant of the present invention is not applied (comparative example 1) were respectively tested, and the test results are shown in table 2; the indexes of 0.045mm and 0.080mm square-hole screen residue, specific surface area, activity index and the like of the slag powder are tested by referring to GB/T18046-2017 granulated blast furnace slag powder used in cement, mortar and concrete and GB/T1345-2005 cement fineness inspection method screen analysis method.
Table 2 table of physical property test results of liquid modified excitant applied to ground slag powder
As can be seen from Table 2, in the case that the specific surface areas of the ground slag powder in the examples 1 to 3 are substantially consistent, the siftage of the 0.045mm square-hole sieve is obviously increased, the activity indexes of 7d and 28d are obviously improved, and the activity indexes of 7d and 28d of the liquid modified excitant applied to the ground slag powder reach the activity requirement of S105 level.
In conclusion, the powder modification excitant for the milled fly ash, which is disclosed by the invention, has the following characteristic advantages: (1) the performance of the product can be optimized by using the finely ground granulated blast furnace slag powder added with the liquid modified excitant, a large amount of industrial waste slag is utilized, the cement consumption is reduced, and energy conservation and emission reduction are realized; (2) the strength of the concrete prepared by the ground granulated blast furnace slag powder added with the liquid modified excitant can be improved by 10-20 percent compared with the standard concrete; (3) the concrete has excellent working performance, pumping performance and construction performance; (4) the liquid modification excitant and the additive have good adaptability; (5) the concrete prepared by the finely ground granulated blast furnace slag powder added with the liquid modified excitant has better durability and microscopic performance; (6) the application range and the field of the finely ground and granulated blast furnace slag powder of the liquid modified excitant can be enlarged; (7) the machine-hour yield of the production and preparation of the ground granulated blast furnace slag powder of the ground liquid modified excitant can be improved, and the power consumption of the production and preparation of the ground slag powder is reduced.
Although the present invention has been described in detail in this specification with reference to specific embodiments and illustrative embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A liquid modification excitant for levigating and granulating blast furnace slag powder is characterized by comprising the following preparation raw materials: modifier, surfactant, antistatic agent, reinforcing excitant, pH value regulator and water.
2. The liquid modification stimulant for finely ground granulated blast furnace slag powder according to claim 1, characterized in that the modifier is lignosulfonate; the antistatic agent is sorbitol.
3. The liquid modification stimulant for finely ground granulated blast furnace slag powder according to claim 2, wherein the lignosulfonate is calcium lignosulfonate; the molecular weight of the calcium lignosulphonate is 800-10000, and the reducing sugar is less than or equal to 30%.
4. The liquid modification stimulant for finely ground granulated blast furnace slag powder according to claim 1, characterized in that the surfactant is one or more of triethanolamine, glycerin, diethanol monoisopropanolamine, diethylene glycol, ethylene glycol.
5. The liquid modifying stimulant for finely grinding and granulating blast furnace slag powder as claimed in claim 1, wherein the enhancing stimulant is one or more of anhydrous sodium sulphate, aluminum sulphate, sodium aluminate, sodium chloride, sucrose.
6. The liquid modifying stimulant for finely ground granulated blast furnace slag powder as claimed in claim 1, wherein the pH value adjusting agent is sodium hydroxide.
7. The liquid modifying excitant for finely ground granulated blast furnace slag powder according to claim 1, wherein the raw materials are used in the following amounts: 1.0-6.0% of modifier, 5.0-25.0% of surfactant, 3.0-15% of antistatic agent, 20.0-30.0% of reinforcing excitant, 2.0-10.0% of pH value regulator and 45.0-70.0% of water.
8. The liquid modifying stimulant for finely grinding granulated blast furnace slag powder as claimed in claim 4, wherein the surfactant comprises: 5.0-10.0% of triethanolamine, 0-7.5% of glycerol, 0-5.0% of diethanol monoisopropanolamine, 2.0-7.5% of diethylene glycol and 2.0-7.5% of ethylene glycol, which account for the mass percentage of the liquid modification excitant.
9. The liquid modifying stimulant for finely grinding granulated blast furnace slag powder according to claim 5, wherein the reinforcing stimulant comprises: 0-6% of anhydrous sodium sulphate, 5.0-18.0% of aluminum sulfate, 0-6.0% of sodium aluminate, 3.0-15.0% of sodium chloride and 0-5.0% of sucrose, which account for the mass percentage of the liquid modification excitant.
10. A preparation method of a liquid modification excitant for grinding and granulating blast furnace slag powder is characterized by comprising the following steps:
step 1, respectively and sequentially dissolving sodium chloride, aluminum sulfate, sodium aluminate, anhydrous sodium sulphate and sucrose in an enhanced excitant in water to obtain an enhanced excitant solution;
step 2, fully mixing and uniformly stirring the antistatic agent and the reinforcing excitant solution to obtain a first mixed solution;
step 3, dissolving ethylene glycol, diethylene glycol, glycerol, triethanolamine and diethanol monoisopropanolamine in the surfactant in the first mixed solution respectively in sequence, and fully mixing and stirring uniformly to obtain a second mixed solution;
and 4, adding a pH regulator into the second mixed solution, and fully mixing and uniformly stirring to obtain the aqueous solution.
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