CN113372028A - High-activity slag micro-powder composite admixture and preparation method thereof - Google Patents
High-activity slag micro-powder composite admixture and preparation method thereof Download PDFInfo
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- CN113372028A CN113372028A CN202110780650.2A CN202110780650A CN113372028A CN 113372028 A CN113372028 A CN 113372028A CN 202110780650 A CN202110780650 A CN 202110780650A CN 113372028 A CN113372028 A CN 113372028A
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- slag
- excitant
- slag micro
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- 239000002893 slag Substances 0.000 title claims abstract description 103
- 239000000843 powder Substances 0.000 title claims abstract description 101
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 230000000694 effects Effects 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000000227 grinding Methods 0.000 claims description 21
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 20
- 239000010881 fly ash Substances 0.000 claims description 20
- 239000002994 raw material Substances 0.000 claims description 20
- 238000007670 refining Methods 0.000 claims description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims description 12
- 239000010935 stainless steel Substances 0.000 claims description 12
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 10
- 229910052602 gypsum Inorganic materials 0.000 claims description 10
- 239000010440 gypsum Substances 0.000 claims description 10
- 229920005610 lignin Polymers 0.000 claims description 10
- 238000005498 polishing Methods 0.000 claims description 10
- 150000003839 salts Chemical class 0.000 claims description 10
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 10
- 235000011152 sodium sulphate Nutrition 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 5
- 230000005284 excitation Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 239000000126 substance Substances 0.000 abstract description 5
- 238000000498 ball milling Methods 0.000 abstract description 4
- 239000005416 organic matter Substances 0.000 abstract description 2
- 150000005846 sugar alcohols Polymers 0.000 abstract description 2
- 230000009545 invasion Effects 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011882 ultra-fine particle 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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/21—Mixtures thereof with other inorganic cementitious materials or other activators with calcium sulfate containing activators
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a high-activity slag micro powder composite admixture and a preparation method thereof, the high-activity slag micro powder composite admixture is divided into slag micro powder A and concentrated powder B, the processing and the mixing of an excitant B in the concentrated powder B are ball milling processing, the processing environment is less than 110 ℃, so that the organic matter in the excitant B can completely avoid the invasion of high temperature, and polyhydric alcohol substances which cannot resist high temperature can be used, thereby effectively reducing the production cost; the excitant A in the slag micro powder A does not contain organic matters, so that the influence of organic matters on the production process can be effectively avoided, and the control on the specific surface area of a finished product in the production process is easy; and the production process of the B agent concentrated powder is ball milling, the interference of material layer stability factors is avoided, the formed concentrated powder usually has the specific surface area not less than 440 square meters per kilogram, so that the specific surface area of a finished product of the composite slag micro powder is not influenced by the production process, and the quality management pressure of the production link is reduced.
Description
Technical Field
The invention relates to the technical field of slag micro powder production, in particular to a high-activity slag micro powder composite admixture and a preparation method thereof.
Background
The slag micro powder is powder collected after the granulated blast furnace slag is ground, dried and selected. The slag micropowder can equivalently replace cement, and the cement doped with the slag micropowder is called slag cement and is widely applied to mass concrete and corrosion-resistant concrete. With the increase of large-volume concrete structures, the demand of society for high-performance slag cement is continuously rising, and the slag cement has unique performance advantages and is applied more and more on more and more occasions. The reuse of industrial waste residue in the cement industry has become a new trend of solid waste environmental protection utilization, and belongs to the leading edge of the solid waste utilization industry.
In the prior art, a certain amount of granulated blast furnace slag, stainless steel tailings, refining slag and other substances are mixed and then directly ground together with an excitant into composite slag micropowder. The existing excitant has the following defects when being mixed and ground with substances such as granulated blast furnace slag, stainless steel tailings, refining slag and the like:
1. organic substances in the excitant are easy to volatilize or denaturalize and lose efficacy at a high temperature of between 200 and 400 ℃, and grinding and excitation effects are lost. At present, most organic components of the grinding aid for the vertical mill are high-temperature resistant, and the grinding aid is expensive and not beneficial to reducing the cost.
2. Organic matters in the exciting agent can improve the fluidity of materials, destroy the stability of a vertical mill material layer in the production process of a vertical mill, increase the differential pressure of the mill and sharply reduce the specific surface area under the condition that the grinding efficiency of the vertical mill is reduced. The activity of the slag micro powder is less prone to excitation due to the reduction of the specific surface area. And because part of organic matters have the characteristic of adsorbing ultrafine particles, the specific surface area of a finished product is usually reduced by 40-60 square meters per kilogram, and the quality is not easy to control by manufacturers. Due to the above disadvantages, the amount of additives added is also limited.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a high-activity slag micro powder composite admixture and a preparation method thereof.
The high-activity slag micro powder composite admixture comprises slag micro powder A and concentrated powder B, wherein the weight ratio of the slag micro powder A to the concentrated powder B is 1000: 3;
the slag micropowder A comprises the following raw materials in parts by weight: 80-100 parts of granulated blast furnace slag, 5-10 parts of stainless steel tailings, 2-4 parts of ceramic tile polishing powder, 1-3 parts of refining slag and 0.1-0.5 part of exciting agent A, wherein the exciting agent A comprises the following raw materials in parts by weight: 4-5 parts of industrial salt, 1-10 parts of gypsum, 60-70 parts of fly ash and 15-30 parts of anhydrous sodium sulphate; the exciting agent A plays a role in grinding aid, so that the machine hour yield is increased;
the concentrated powder B comprises the following raw materials in parts by weight: 4-5 parts of granulated blast furnace slag and 0.5-1 part of excitant B, wherein the excitant B comprises the following raw materials in parts by weight: 8-10 parts of triethanolamine, 20-30 parts of lignin and 60-72 parts of fly ash; the excitant B plays a role in excitation and improves early strength.
A preparation method of a high-activity slag micro powder composite admixture is characterized by comprising the following steps:
the method comprises the following steps: preparing an exciting agent A: weighing industrial salt, gypsum, fly ash and anhydrous sodium sulphate in sequence according to a formula proportion, and placing the materials in a stirrer to be uniformly stirred for 30min to obtain an excitant A;
step two: preparing an exciting agent B: weighing triethanolamine, lignin and fly ash in sequence according to a formula ratio, and placing the materials in a stirrer to be uniformly stirred for 30min to obtain an excitant B;
step three: preparing concentrated powder B: placing the exciting agent B and the dried granulated blast furnace slag together in a ball mill according to the formula proportion for grinding for 45min, and taking out the mixed material after the ball mill is finished to obtain concentrated powder B;
step four: preparing slag micropowder A: uniformly putting the excitant A into a grinding mill according to the formula proportion, and grinding together with granulated blast furnace slag, stainless steel tailings, ceramic tile polishing powder and refining slag;
step five: preparing the high-activity slag micro-powder composite admixture: and uniformly mixing the concentrated powder B and the slag micro powder A according to the formula ratio to obtain the high-activity slag micro powder composite admixture.
In conclusion, the invention has the following beneficial effects:
1. according to the invention, the high-activity slag micro powder composite admixture is divided into slag micro powder A and concentrated powder B, the processing and mixing of the excitant B in the concentrated powder B are ball milling processing, the processing environment is less than 110 ℃, so that the organic matter in the excitant B can be completely prevented from being invaded by high temperature, and polyhydric alcohol substances which cannot resist high temperature can be used, so that the production cost can be effectively reduced;
2. the excitant A in the slag micro powder A does not contain organic matters, so that the influence of organic matters on the production process can be effectively avoided, and the control on the specific surface area of a finished product in the production process is easy; and the production process of the B agent concentrated powder is ball milling, the interference of material layer stability factors is avoided, the formed concentrated powder usually has the specific surface area not less than 440 square meters per kilogram, so that the specific surface area of a finished product of the composite slag micro powder is not influenced by the production process, and the quality management pressure of the production link is reduced.
Detailed Description
Example one
The high-activity slag micro powder composite admixture comprises slag micro powder A and concentrated powder B, wherein the weight ratio of the slag micro powder A to the concentrated powder B is 1000: 3;
the slag micropowder A comprises the following raw materials in parts by weight: 84.5 parts of granulated blast furnace slag, 10 parts of stainless steel tailings, 2 parts of ceramic tile polishing powder, 2 parts of refining slag and 0.1 part of excitant A, wherein the excitant A comprises the following raw materials in parts by weight: 4 parts of industrial salt, 1 part of gypsum, 60 parts of fly ash and 15 parts of anhydrous sodium sulphate;
the concentrated powder B comprises the following raw materials in parts by weight: 4 parts of granulated blast furnace slag and 0.5 part of excitant B, wherein the excitant B comprises the following raw materials in parts by weight: 8 parts of triethanolamine, 20 parts of lignin and 60 parts of fly ash.
A preparation method of a high-activity slag micro powder composite admixture comprises the following steps:
the method comprises the following steps: preparing an exciting agent A: weighing industrial salt, gypsum, fly ash and anhydrous sodium sulphate in sequence according to the proportion, and placing the materials in a stirrer to be uniformly stirred for 30min to obtain an excitant A;
step two: preparing an exciting agent B: sequentially weighing triethanolamine, lignin and fly ash according to the proportion, and placing the materials in a stirrer to be uniformly stirred for 30min to obtain an excitant B;
step three: preparing concentrated powder B: placing the exciting agent B and the dried granulated blast furnace slag together in a ball mill according to the formula proportion for grinding for 45min, and taking out the mixed material after the ball mill is finished to obtain concentrated powder B;
step four: preparing slag micropowder A: uniformly putting the excitant A into a grinding mill according to the proportion, and grinding together with the granulated blast furnace slag, the stainless steel tailings, the ceramic tile polishing powder and the refining slag;
step five: preparing the high-activity slag micro-powder composite admixture: and uniformly mixing the concentrated powder B and the slag micro powder A according to the proportion to obtain the high-activity slag micro powder composite admixture.
Example two
The high-activity slag micro powder composite admixture comprises slag micro powder A and concentrated powder B, wherein the weight ratio of the slag micro powder A to the concentrated powder B is 1000: 3;
the slag micropowder A comprises the following raw materials in parts by weight: 89.5 parts of granulated blast furnace slag, 5 parts of stainless steel tailings, 2 parts of ceramic tile polishing powder, 2 parts of refining slag and 0.5 part of excitant A, wherein the excitant A comprises the following raw materials in parts by weight: 5 parts of industrial salt, 5 parts of gypsum, 70 parts of fly ash and 30 parts of anhydrous sodium sulphate;
the concentrated powder B comprises the following raw materials in parts by weight: 4 parts of granulated blast furnace slag and 0.8 part of excitant B, wherein the excitant B comprises the following raw materials in parts by weight: 10 parts of triethanolamine, 25 parts of lignin and 70 parts of fly ash.
A preparation method of a high-activity slag micro powder composite admixture comprises the following steps:
the method comprises the following steps: preparing an exciting agent A: weighing industrial salt, gypsum, fly ash and anhydrous sodium sulphate in sequence according to the proportion, and placing the materials in a stirrer to be uniformly stirred for 30min to obtain an excitant A;
step two: preparing an exciting agent B: sequentially weighing triethanolamine, lignin and fly ash according to the proportion, and placing the materials in a stirrer to be uniformly stirred for 30min to obtain an excitant B;
step three: preparing concentrated powder B: placing the exciting agent B and the dried granulated blast furnace slag together in a ball mill according to the formula proportion for grinding for 45min, and taking out the mixed material after the ball mill is finished to obtain concentrated powder B;
step four: preparing slag micropowder A: uniformly putting the excitant A into a grinding mill according to the proportion, and grinding together with the granulated blast furnace slag, the stainless steel tailings, the ceramic tile polishing powder and the refining slag;
step five: preparing the high-activity slag micro-powder composite admixture: and uniformly mixing the concentrated powder B and the slag micro powder A according to the proportion to obtain the high-activity slag micro powder composite admixture.
EXAMPLE III
The high-activity slag micro powder composite admixture comprises slag micro powder A and concentrated powder B, wherein the weight ratio of the slag micro powder A to the concentrated powder B is 1000: 3;
the slag micropowder A comprises the following raw materials in parts by weight: 94.5 parts of granulated blast furnace slag, 5 parts of stainless steel tailings, 3 parts of ceramic tile polishing powder, 2 parts of refining slag and 0.3 part of excitant A, wherein the excitant A comprises the following raw materials in parts by weight: 5 parts of industrial salt, 10 parts of gypsum, 66 parts of fly ash and 28 parts of anhydrous sodium sulphate;
the concentrated powder B comprises the following raw materials in parts by weight: 5 parts of granulated blast furnace slag and 1 part of excitant B, wherein the excitant B comprises the following raw materials in parts by weight: 10 parts of triethanolamine, 30 parts of lignin and 72 parts of fly ash.
A preparation method of a high-activity slag micro powder composite admixture comprises the following steps:
the method comprises the following steps: preparing an exciting agent A: weighing industrial salt, gypsum, fly ash and anhydrous sodium sulphate in sequence according to the proportion, and placing the materials in a stirrer to be uniformly stirred for 30min to obtain an excitant A;
step two: preparing an exciting agent B: sequentially weighing triethanolamine, lignin and fly ash according to the proportion, and placing the materials in a stirrer to be uniformly stirred for 30min to obtain an excitant B;
step three: preparing concentrated powder B: placing the exciting agent B and the dried granulated blast furnace slag together in a ball mill according to the formula proportion for grinding for 45min, and taking out the mixed material after the ball mill is finished to obtain concentrated powder B;
step four: preparing slag micropowder A: uniformly putting the excitant A into a grinding mill according to the proportion, and grinding together with the granulated blast furnace slag, the stainless steel tailings, the ceramic tile polishing powder and the refining slag;
step five: preparing the high-activity slag micro-powder composite admixture: and uniformly mixing the concentrated powder B and the slag micro powder A according to the proportion to obtain the high-activity slag micro powder composite admixture.
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 a part of the embodiments of the present invention, but not all of the 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.
Claims (3)
1. The high-activity slag micro powder composite admixture is characterized by comprising slag micro powder A and concentrated powder B, wherein the weight ratio of the slag micro powder A to the concentrated powder B is 1000: 3;
the slag micropowder A comprises the following raw materials in parts by weight: 80-100 parts of granulated blast furnace slag, 5-10 parts of stainless steel tailings, 2-4 parts of ceramic tile polishing powder, 1-3 parts of refining slag and 0.1-0.5 part of exciting agent A, wherein the exciting agent A comprises the following raw materials in parts by weight: 4-5 parts of industrial salt, 1-10 parts of gypsum, 60-70 parts of fly ash and 15-30 parts of anhydrous sodium sulphate;
the concentrated powder B comprises the following raw materials in parts by weight: 4-5 parts of granulated blast furnace slag and 0.5-1 part of excitant B, wherein the excitant B comprises the following raw materials in parts by weight: 8-10 parts of triethanolamine, 20-30 parts of lignin and 60-72 parts of fly ash.
2. The high-activity superfine slag powder composite admixture as defined in claim 1, wherein the excitant A has a grinding aid effect, so that the machine-hour yield is increased; the excitant B plays a role in excitation and improves early strength.
3. A preparation method of a high-activity slag micro powder composite admixture is characterized by comprising the following steps:
the method comprises the following steps: preparing an exciting agent A: weighing industrial salt, gypsum, fly ash and anhydrous sodium sulphate in sequence according to a formula proportion, and placing the materials in a stirrer to be uniformly stirred for 30min to obtain an excitant A;
step two: preparing an exciting agent B: weighing triethanolamine, lignin and fly ash in sequence according to a formula ratio, and placing the materials in a stirrer to be uniformly stirred for 30min to obtain an excitant B;
step three: preparing concentrated powder B: placing the exciting agent B and the dried granulated blast furnace slag together in a ball mill according to the formula proportion for grinding for 45min, and taking out the mixed material after the ball mill is finished to obtain concentrated powder B;
step four: preparing slag micropowder A: uniformly putting the excitant A into a grinding mill according to the formula proportion, and grinding together with granulated blast furnace slag, stainless steel tailings, ceramic tile polishing powder and refining slag;
step five: preparing the high-activity slag micro-powder composite admixture: and uniformly mixing the concentrated powder B and the slag micro powder A according to the formula ratio to obtain the high-activity slag micro powder composite admixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110780650.2A CN113372028A (en) | 2021-07-10 | 2021-07-10 | High-activity slag micro-powder composite admixture and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110780650.2A CN113372028A (en) | 2021-07-10 | 2021-07-10 | High-activity slag micro-powder composite admixture and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113372028A true CN113372028A (en) | 2021-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110780650.2A Pending CN113372028A (en) | 2021-07-10 | 2021-07-10 | High-activity slag micro-powder composite admixture and preparation method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN113372028A (en) |
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2021
- 2021-07-10 CN CN202110780650.2A patent/CN113372028A/en active Pending
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