CN109265041A - A kind of high activity slag powders and its preparation process - Google Patents
A kind of high activity slag powders and its preparation process Download PDFInfo
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- CN109265041A CN109265041A CN201811204797.1A CN201811204797A CN109265041A CN 109265041 A CN109265041 A CN 109265041A CN 201811204797 A CN201811204797 A CN 201811204797A CN 109265041 A CN109265041 A CN 109265041A
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- Prior art keywords
- slag powders
- high activity
- slag
- powders
- activity
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a kind of high activity slag powders and its preparation processes, are related to technical field of concrete, solve the lower technical problem of the activity index of slag powders.Be characterized in that: high activity slag powders include the component of following parts by weight: slag: 100 parts；Anhydrous sodium sulphate: 0.1~0.5 part；Potassium sulfate: 0.1~0.5 part；White lime: 0.2~0.4 part；Grinding aid: 0.015~0.02 part, the advantages of active index is high, large specific surface area.
Description
Technical field
The present invention relates to technical field of concrete, more specifically, it relates to a kind of high activity slag powders and its preparation work
Skill.
Background technique
Slag powders are the abbreviations of ground granulated blast furnace slag, are a kind of good concrete admixtures, by meeting GB/T203 mark
Quasi- granulated blast-furnace slag reaches suitable fineness and meets the powder of suitable activity index through drying, grinding.
Slag powders are preferable cementitious material, especially S105 grades of high grade slag powder activity with higher.Gao Pin is added
The concrete strength of matter slag powders is high, workability energy is good, demoulding is fast, can improve impermeability, the frost resistance of concrete, increase slump
Degree.
The slag powders of existing market application are up to state standards S105 grade less, and the market share is about less than 5%；S95
The grade slag powder market share only has 35% hereinafter, not being able to satisfy the needs of construction market especially state key construction project.It is high
The main reason for waiting grade slag powders accounting low is that slag powders activity index is low, and Building Engineering Design requirement is not achieved.Therefore, it finds out
The low reason of slag powders activity, seeks to improve its active method, is that everybody very pays close attention to and it is desirable that solve the problems, such as.
Summary of the invention
In view of the deficienciess of the prior art, the purpose of the present invention one is to provide a kind of high activity slag powders, have
The advantage that activity index is high, specific surface area is high.
The purpose of the present invention two is to provide a kind of preparation process of high activity slag powders, the high activity slag powders of preparation
Activity index is higher, applies in concrete, and intensity is high.
To achieve the above object one, the present invention provides the following technical scheme that
A kind of high activity slag powders, the component including following parts by weight:
Slag: 100 parts；
Anhydrous sodium sulphate: 0.1~0.5 part；
Potassium sulfate: 0.1~0.5 part；
White lime: 0.2~0.4 part；
Grinding aid: 0.015~0.02 part.
By using above-mentioned technical proposal, improves the quality of slag powders itself, improves the ratio of slag powders in a certain range
Surface area, and the suitable activity excitant of admixture can effectively improve slag powders activity index.
By adding anhydrous sodium sulphate, potassium sulfate, SO is provided4 2-, with the Ca in slag powders2+And Al3+Reaction increases anti-
Activity and intensity are answered, by the way that white lime is added, under alkaline condition, sulfate just can be such that the activity of slag gives full play of,
This is because under alkaline condition, OH-Ion destroys the key of the silicon oxygen polymeric chain promoted in slag, accelerates the dispersion, molten of slag
Solution, and hydrated calcium silicate and drated calcium aluminate are formed, the intensity after improving hardening of cement.
By adding grinding aid, surfactant can be played the role of, slag solid is adsorbed in grinding process
On grain surface, interfacial tension is reduced, the surface free energy of material particles is reduced, reduced and reunite, slag powders are available more
High grinding fineness.
Using grinding aid and exciting agent can effective activated slag powder hydration activity.They are mainly swashed by chemical action
The activity of slag surface is sent out, grinding aid and exciting agent are used in conjunction with, enhance slag surface stimulation effect, substantially increase slag
The activity index of powder.
Further preferably, the grinding aid is at least one of triethanolamine and glycerine.
By using above-mentioned technical proposal, triethanolamine and glycerine are added, in slag powders process of lapping, reduces object
Expect surface energy, reduces and reunite, improve grinding effect.
It further preferably, further include 1~10 part of gypsum in the raw material components of the high activity slag powders.
By using above-mentioned technical proposal, gypsum has at aquation initial stage adjusts cement and slag hydration rate and excited cement
And the effect of slag intensity.
It further preferably, further include 10~15 parts of clinker in the raw material components of the high activity slag powders.
By using above-mentioned technical proposal, the early hydration reaction speed and intensity of cement will be significantly larger than slag powders, lead to
The intensity for crossing clinker itself plays and its induces and accelerate the anti-of slag powders in the quick violent reaction at aquation initial stage
It answers, plays the purpose for improving slag powders early activity.
To achieve the above object two, the present invention provides the following technical scheme that
A kind of preparation process of high activity slag powders, which comprises the following steps:
Step 1 chooses the high-quality slag of corresponding parts by weight, the grinding aid of corresponding parts by weight is added, puts into vertical grinder
In ground；
Step 2, drying, is passed through hot wind into vertical grinder and is dried；
Anhydrous sodium sulphate, potassium sulfate and white lime are put into vertical grinder and are ground, obtains mixture by step 3；
Clinker and gypsum are ground together, are then uniformly mixed together with the mixture in step 3, obtained by step 4
To high activity slag powders.
Further, in the step 2, the hot blast temperature being passed through is 100~105 DEG C.
Further, the revolving speed of the vertical grinder is 110~140r/min.
By using above-mentioned technical proposal, the specific surface area of slag powders is lower, then activity index is low, but be not easy it is excessively high,
Because if further increasing the specific surface area of slag powders, the vibration of Vertical Mill can be bigger, and the ability of system powder concentrator also seems
The energy consumption of deficiency, production also has substantial increase.
Drying temperature is also not easy too low, and too low, drying materials are slower, and temperature is excessively high, and slag powder particles are under high temperature action
Anti- vitreum, it will lose amount of activated, vivacity is caused to reduce.
In conclusion compared with prior art, the invention has the following advantages:
(1) by adding anhydrous sodium sulphate, potassium sulfate and white lime in slag powders, due to the activity of slag powders further depend on chemistry at
Point, the size of the active available quality coefficient of chemical component is measured, and the main component of slag powders is CaO, MgO, Al2O3With
SiO2；CaO, MgO and Al2O3It is ingredient beneficial to activity in slag, content raising can be such that slag powders quality coefficient improves,
SiO2Content is higher, so that the structural behaviour of slag powders is stablized, slag's chemical module is caused to reduce；Anhydrous sodium sulphate and potassium sulfate provide
SO4 2-, with the Ca in slag powders2+And Al3+Reaction, increases reactivity and intensity, and white lime provides alkaline environment, OH-From
Son destroys the key of the silicon oxygen polymeric chain promoted in slag, reduces SiO2Content, accelerate dispersion, the dissolution of slag, and formed
Hydrated calcium silicate and drated calcium aluminate, the intensity after improving hardening of cement, the vivacity of slag powders greatly improve；
(2) it is ground together by adding grinding aid in slag powders, since grinding aid can play the role of surfactant, in grinding
It is adsorbed in slag solid particles surface in the process, reduces interfacial tension, reduce the surface free energy of material particles, reduced
Reunite, the available higher grinding fineness of slag powders increases the specific surface area of slag powders, improves the activity index of slag powders；
(3) by the way that by drying temperature control, within the scope of 95~105 DEG C, since temperature is excessively high, slag powder particles are in high temperature action
Under anti-vitreum, it will lose amount of activated, vivacity caused to reduce, by controlling drying temperature, make the work of slag powders
Sex index peaks.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be described in detail.
Embodiment 1: a kind of high activity slag powders, each component and its corresponding parts by weight are as shown in table 1, and by as follows
Step prepares:
Step 1 chooses the higher alkaline slag of Nangang's active constituent, the triethanolamine of corresponding parts by weight is added, puts into vertical
It is ground in formula grinding machine, vertical grinder revolving speed is 120r/min；
Step 2, drying are passed through the hot wind that temperature is 105 DEG C into vertical grinder and are dried；
Anhydrous sodium sulphate, potassium sulfate and white lime are put into vertical grinder and are ground, obtains mixture by step 3；
Clinker and gypsum are ground together, are then uniformly mixed together with the mixture in step 3, obtained by step 4
To high activity slag powders.
Embodiment 2-10: a kind of high activity slag powders, difference from example 1 is that, each component and its corresponding
Parts by weight are as shown in table 1.
Each component and its parts by weight in 1 embodiment 1-10 of table
Embodiment 11: a kind of high activity slag powders, difference from example 1 is that, grinding aid uses glycerine.
Embodiment 12: a kind of high activity slag powders, difference from example 1 is that, grinding aid uses triethanolamine
With the mixture of glycerine.
Comparative example 1: a kind of high activity slag powders, difference from example 1 is that, in step 1, it is living to choose Nangang
Property the higher alkaline slag of ingredient, put into vertical grinder and ground, vertical grinder revolving speed be 120r/min.
Comparative example 2: a kind of high activity slag powders, difference from example 1 is that, in step 2, drying is past vertical
The hot wind that temperature is 300 DEG C is passed through in grinding machine to be dried.
Comparative example 3: a kind of high activity slag powders, difference from example 1 is that, in step 3, white lime is thrown
Enter and ground into vertical grinder, obtains mixture.
Comparative example 4: a kind of high activity slag powders, difference from example 1 is that, in step 3, by anhydrous sodium sulphate and
Potassium sulfate is put into vertical grinder and is ground, and mixture is obtained.
Activity index detection
Test specimen: using the high activity slag powders obtained in embodiment 1-12 as test specimen 1-12, using comparative example 1-4
The high activity slag powders of middle acquisition are as control sample 1-4.
Test method: according to GB/T 18046-2008 to test specimen 1-12 and control sample 1-4 carry out activity index and
The measurement of specific surface area will test in data filling table 2.
Test result: the testing result of test specimen 1-12 and control sample 1-4 are as shown in table 2.As shown in Table 2, it tests
Specific surface area is larger in sample 1-12, and is all larger than standard value 400m2/ kg, activity index are all larger than 75%/7d of standard value,
95%/28d, specific surface area and activity index are smaller in control sample, and are less than standard value, illustrate that slag powders are matched in the application
It closes anhydrous sodium sulphate, potassium sulfate and the grinding of people's white lime to use, it is excellent that the active index of obtained slag powders is high, specific surface area is high
Point.
The appraisal result of table 2 test specimen 1-22 and control sample 1-6
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of high activity slag powders, which is characterized in that the component including following parts by weight:
Slag: 100 parts；
Anhydrous sodium sulphate: 0.1~0.5 part；
Potassium sulfate: 0.1~0.5 part；
White lime: 0.2~0.4 part；
Grinding aid: 0.015~0.02 part.
2. high activity slag powders according to claim 1, which is characterized in that the grinding aid is triethanolamine and glycerine
At least one of.
3. high activity slag powders according to claim 1, which is characterized in that in the raw material components of the high activity slag powders
It further include 1~10 part of gypsum.
4. high activity slag powders according to claim 1, which is characterized in that in the raw material components of the high activity slag powders
It further include 10~15 parts of clinker.
5. a kind of preparation process of high activity slag powders, which comprises the following steps:
Step 1 chooses the high-quality slag of corresponding parts by weight, the grinding aid of corresponding parts by weight is added, puts into vertical grinder
In ground；
Step 2, drying, is passed through hot wind into vertical grinder and is dried；
Anhydrous sodium sulphate, potassium sulfate and white lime are put into vertical grinder and are ground, obtains mixture by step 3；
Clinker and gypsum are ground together, are then uniformly mixed together with the mixture in step 3, obtained by step 4
To high activity slag powders.
6. preparation process according to claim 5, which is characterized in that in the step 2, the hot blast temperature being passed through is
100~105 DEG C.
7. preparation process according to claim 5, which is characterized in that the revolving speed of the vertical grinder is 110~140r/
min。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811204797.1A CN109265041A (en) | 2018-10-16 | 2018-10-16 | A kind of high activity slag powders and its preparation process |
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| CN201811204797.1A CN109265041A (en) | 2018-10-16 | 2018-10-16 | A kind of high activity slag powders and its preparation process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110615642A (en) * | 2019-10-14 | 2019-12-27 | 上海浦盈混凝土有限公司 | Concrete containing high-activity slag powder and preparation method thereof |
| CN111039585A (en) * | 2019-12-31 | 2020-04-21 | 山东永正水泥有限公司 | Composite mineral powder, preparation method and application |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249572A (en) * | 2011-06-15 | 2011-11-23 | 徐雄文 | Process method for producing building gelling agent from industrial residues |
| CN102503338A (en) * | 2011-11-09 | 2012-06-20 | 刘静 | Technique method for producing dry building mortar through industrial solid waste |
| CN103833243A (en) * | 2014-01-09 | 2014-06-04 | 山东黄金矿业(莱州)有限公司焦家金矿 | Slag-based whole tailing gravity-flow filling cementing material and filling slurry preparation method thereof |
| US9957196B1 (en) * | 2016-05-17 | 2018-05-01 | Roman Cement Llc | Particle size optimized white cementitious compositions |
| CN108083671A (en) * | 2017-11-28 | 2018-05-29 | 唐山北极熊建材有限公司 | Granulated blast-furnace slag exciting agent and preparation method thereof and purposes |
-
2018
- 2018-10-16 CN CN201811204797.1A patent/CN109265041A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249572A (en) * | 2011-06-15 | 2011-11-23 | 徐雄文 | Process method for producing building gelling agent from industrial residues |
| CN102503338A (en) * | 2011-11-09 | 2012-06-20 | 刘静 | Technique method for producing dry building mortar through industrial solid waste |
| CN103833243A (en) * | 2014-01-09 | 2014-06-04 | 山东黄金矿业(莱州)有限公司焦家金矿 | Slag-based whole tailing gravity-flow filling cementing material and filling slurry preparation method thereof |
| US9957196B1 (en) * | 2016-05-17 | 2018-05-01 | Roman Cement Llc | Particle size optimized white cementitious compositions |
| CN108083671A (en) * | 2017-11-28 | 2018-05-29 | 唐山北极熊建材有限公司 | Granulated blast-furnace slag exciting agent and preparation method thereof and purposes |
Non-Patent Citations (2)
| Title |
|---|
| 丁铸等: "矿渣水硬活性的复合激发试验研究", 《广东建材》 * |
| 建筑工程部水泥研究室: "《赤泥硫酸盐水泥》", 31 March 1960, 冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110615642A (en) * | 2019-10-14 | 2019-12-27 | 上海浦盈混凝土有限公司 | Concrete containing high-activity slag powder and preparation method thereof |
| CN111039585A (en) * | 2019-12-31 | 2020-04-21 | 山东永正水泥有限公司 | Composite mineral powder, preparation method and application |
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