CN109650755A - High alkalinity sulphate aluminium cement of sulfur acid calcium and preparation method thereof - Google Patents
High alkalinity sulphate aluminium cement of sulfur acid calcium and preparation method thereof Download PDFInfo
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- CN109650755A CN109650755A CN201910048328.3A CN201910048328A CN109650755A CN 109650755 A CN109650755 A CN 109650755A CN 201910048328 A CN201910048328 A CN 201910048328A CN 109650755 A CN109650755 A CN 109650755A
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- Prior art keywords
- sulphate aluminium
- aluminium cement
- sulfur acid
- high alkalinity
- acid calcium
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/32—Aluminous cements
- C04B7/323—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
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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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to high alkalinity sulphate aluminium cement of a kind of sulfur acid calcium and preparation method thereof, preparation method includes: that the substance containing calcium sulfate is carried out calcination processing, cooling, obtains activated material；By raw material grinding, powder is obtained；Wherein the raw material includes the activated material；The high alkalinity sulphate aluminium cement of sulfur acid calcium is prepared with the powder.The high alkalinity sulphate aluminium cement of sulfur acid calcium of the invention, the incorporation that can use calcium sulfate adjusts the performance of sulphate aluminium cement, and compared with being not spiked with calcium sulfate, aquation basicity will not sharp fall, or even can improve.It is applicable to the field that sulphate aluminium cement has higher aquation basicity.
Description
Technical field
The present invention relates to a kind of cement and preparation method thereof, more particularly to a kind of high alkalinity aluminium sulfate of sulfur acid calcium
Cement and preparation method thereof.
Background technique
Sulphate aluminium cement is that a kind of intensity performance is fast, the cementitious material with hour grade military service excellent characteristic, Chang Beiyong
In the fields such as rapid construction, repairing, corrosion-resistant, purposes is wide.
In decades, sulphate aluminium cement becomes and grinds due to having the advantages that low energy consumption, low-carbon emission, high performance simultaneously
Study carefully hot spot, many universities and colleges, scientific research institutions, manufacturing enterprise have conducted extensive research sulphate aluminium cement, obtain many and grind
Study carefully achievement: sulphate aluminium cement is applied to ocean engineering, improves sulphate aluminium cement early strength, later strength, introduces novel
Mineral, etc..
Research of the sulphate aluminium cement prior art in terms of aquation system basicity, concentrating on reduces basicity direction, such as
Low-alkalinity sulphoaluminate cement, low alkalinity vegetation cement concrete etc., improve basicity in terms of technical work it is seldom.Basicity mentions
Height is conducive to protect the reinforcing bar in sulphate aluminium cement concrete, and the hydrated cementitious system of low alkalinity can make reinforcing bar have the wind of corrosion
Danger.
Sulfur acid calcium object is mutually one of the primary raw material of sulphate aluminium cement preparation, including dead plaster (anhydrite),
Calcium sulphate dihydrate (gypsum) etc., some industry by-product gypsums are also studied and use, these sulfur acid calcium objects are mutually in aluminium sulfate
The prior art in field is mainly following two aspects purposes: first, it is used as raw material raw material, passes through chemical reaction, a part
Calcium sulfate is converted into the main constituent phase calcium sulphoaluminate of sulfoaluminate clinker, and another part is solid-solution in the other object phases of clinker,
Such as among belite, iron phase, some residue is among clinker finished product；Second, when being prepared as sulphate aluminium cement
Raw material be prepared as sulphate aluminium cement jointly together with sulfoaluminate clinker, mixing material.
When prepared by sulphate aluminium cement, it is often necessary to contain a certain amount of calcium sulfate object phase, calcium sulfate object in cement system
After mutually introducing, the aquation basicity of sulphate aluminium cement system can decline.If the sulphate aluminium cement containing calcium sulfate is for containing
There are the fields such as product, the plant cover concrete of glass fibre, the reduction of aquation basicity is advantageous.But sulphate aluminium cement also has
Some fields for needing that there is high aquation basicity are possibly used for, such as armored concrete needs hydrated cementitious system with more high-alkali
Degree is to protect reinforcing bar, etc..And in the prior art, while being related to the work of calcium sulfate Yu two factors of basicity, it is main to concentrate
In terms of reducing aluminium sulfate aquation system basicity.
Summary of the invention
It is a primary object of the present invention to provide the high alkalinity sulphate aluminium cement and its system of a kind of novel sulfur acid calcium
Preparation Method, the technical problem to be solved is that making its sulphate aluminium cement aquation system basicity be in higher level, thus more
Suitable for practical.
The object of the invention to solve the technical problems adopts the following technical solutions to realize.It proposes according to the present invention
A kind of sulfur acid calcium high alkalinity sulphate aluminium cement preparation method comprising:
Substance containing calcium sulfate is subjected to calcination processing, it is cooling, obtain activated material；
By raw material grinding, powder is obtained；Wherein the raw material includes the activated material；
The high alkalinity sulphate aluminium cement of sulfur acid calcium is prepared with the powder.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
Preferably, the preparation method of the high alkalinity sulphate aluminium cement of sulfur acid calcium above-mentioned, wherein the calcining
Temperature is 150-1500 DEG C.
Preferably, the preparation method of the high alkalinity sulphate aluminium cement of sulfur acid calcium above-mentioned, wherein described contains sulphur
The substance of sour calcium is gypsum or anhydrite.
Preferably, the preparation method of the high alkalinity sulphate aluminium cement of sulfur acid calcium above-mentioned, wherein the raw material is also
Including sulfoaluminate clinker.
Preferably, the preparation method of the high alkalinity sulphate aluminium cement of sulfur acid calcium above-mentioned, wherein the raw material is also
Including sulfoaluminate clinker and mixing material.
Preferably, the preparation method of the high alkalinity sulphate aluminium cement of sulfur acid calcium above-mentioned, wherein the mixing material
Material is at least one of slag, slag micropowder, silicon ash, nano aluminum siliceous material.
Also the following technical solution is employed for the object of the invention to solve the technical problems to realize.It proposes according to the present invention
Sulfur acid calcium high alkalinity sulphate aluminium cement, be prepared by method above-mentioned.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
Preferably, the high alkalinity sulphate aluminium cement of sulfur acid calcium above-mentioned, wherein the high alkalinity of the sulfur acid calcium
The basicity of sulphate aluminium cement is greater than 11.
By above-mentioned technical proposal, the high alkalinity sulphate aluminium cement and preparation method thereof of sulfur acid calcium of the present invention at least has
It has the advantage that
The present invention after the independent calcination processing of the substance of sulfur acid calcium, will be reapplied to be prepared in sulphate aluminium cement, will be passed through
The activated material and sulfoaluminate clinker of calcination processing, or with sulfoaluminate clinker, mixing material, prepare sulfur acid calcium jointly
High alkalinity sulphate aluminium cement.
The high alkalinity sulphate aluminium cement of sulfur acid calcium of the invention, can use mixing for the calcium sulfate of independent calcination processing
Enter to adjust the performance of sulphate aluminium cement, and compared with being not spiked with calcium sulfate, aquation basicity will not sharp fall, or even meeting
It improves.It is applicable to the field that sulphate aluminium cement has higher aquation basicity, for example, sulphur aluminium can be protected more preferably
Reinforcing bar in acid salt cement concrete.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, with presently preferred embodiments of the present invention, detailed description is as follows below.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Preferred embodiment, to high alkalinity sulphate aluminium cement of sulfur acid calcium proposed according to the present invention and preparation method thereof, it is specific real
Mode, structure, feature and its effect are applied, detailed description is as follows.In the following description, different " embodiment " or " embodiment "
What is referred to is not necessarily the same embodiment.In addition, the special characteristic, structure or feature in one or more embodiments can be by any conjunction
Conformal formula combination.
A kind of preparation method of the high alkalinity sulphate aluminium cement for sulfur acid calcium that one embodiment of the present of invention proposes,
Include:
By the substance containing calcium sulfate in 150-1500 DEG C of progress calcination processing, cooling obtains activated material；
By raw material grinding, powder is obtained；Wherein the raw material includes the activated material；
The high alkalinity sulphate aluminium cement of sulfur acid calcium is prepared with the powder.
Preferably, the substance containing calcium sulfate is gypsum or anhydrite.
Preferably, raw material further includes sulfoaluminate clinker.
Preferably, raw material further includes sulfoaluminate clinker and mixing material.Mixing material be slag, slag micropowder, silicon ash,
At least one of nano aluminum siliceous material.
Preferably, another embodiment of the present invention proposes a kind of high alkalinity sulphate aluminium cement of sulfur acid calcium, by aforementioned
Method be prepared.The basicity of the high alkalinity sulphate aluminium cement of the sulfur acid calcium be greater than 11, be higher than same volume its
The basicity of the sulphate aluminium cement of the sulfur acid calcium of other party method preparation.
A kind of preparation method of the high alkalinity sulphate aluminium cement for sulfur acid calcium that one embodiment of the present of invention proposes,
Include:
By gypsum in 850 DEG C of progress calcination processings, cooling obtains activated material；
Activated material is mixed according to the ratio in Table 1 respectively with sulfoaluminate clinker, grinding obtains the powder of embodiment 1-4；Its
In, the component of sulfoaluminate clinker is as shown in table 2；
Prepare the high alkalinity sulphate aluminium cement of the sulfur acid calcium of embodiment 1-4 respectively with the powder.
The high alkalinity sulphate aluminium cement aquation basicity of the sulfur acid calcium of embodiment 1-4 carries out alkali according to GB20472-2006
Degree measurement, the results are shown in Table 1.
A kind of preparation method for sulphate aluminium cement that a comparative example of the invention proposes comprising:
The natural gypsum is mixed according to the ratio in Table 1 respectively with sulfoaluminate clinker, grinding obtains the powder of comparative example 1-5；Its
In, the component of sulfoaluminate clinker is as shown in table 2；
Prepare the sulphate aluminium cement of comparative example 1-5 respectively with the powder.
The sulphate aluminium cement aquation basicity of comparative example 1-5 carries out Basicity Determination according to GB20472-2006, as a result such as table 1
It is shown.
The powder of table 1 embodiment 1-4 and comparative example 1-5 forms cement alkalinity
The sulfoaluminate clinker component (weight percent) of table 2 embodiment 1-4 and comparative example 2-5
Seen from table 1, gypsum is used in combination with sulfoaluminate clinker after calcination processing, is conducive to sulphate aluminium cement
System aquation basicity is in higher level.
A kind of preparation method of the high alkalinity sulphate aluminium cement for sulfur acid calcium that another embodiment of the present invention proposes,
Include:
By gypsum in 1450 DEG C of progress calcination processings, cooling obtains activated material；
Activated material and sulfoaluminate clinker are mixed in 3 ratio of table respectively, grinding obtains the powder of embodiment 5-7；Its
In, the component of sulfoaluminate clinker is as shown in table 4；
Prepare the high alkalinity sulphate aluminium cement of the sulfur acid calcium of embodiment 5-7 respectively with the powder.
The high alkalinity sulphate aluminium cement aquation basicity of the sulfur acid calcium of embodiment 5-7 carries out alkali according to GB20472-2006
Degree measurement, the results are shown in Table 3.
A kind of preparation method for sulphate aluminium cement that a comparative example of the invention proposes comprising:
The natural gypsum and sulfoaluminate clinker are mixed in 3 ratio of table respectively, grinding obtains the powder of comparative example 6-9；Its
In, the component of sulfoaluminate clinker is as shown in table 4；
Prepare the sulphate aluminium cement of comparative example 6-9 respectively with the powder.
The sulphate aluminium cement aquation basicity of comparative example 6-9 carries out Basicity Determination according to GB20472-2006, as a result such as table 3
It is shown.
The powder of table 3 embodiment 5-7 and comparative example 6-9 forms and cement alkalinity
The sulfoaluminate clinker component (weight percent) of table 4 embodiment 5-7 and comparative example 7-9
| LOSS | SiO2 | Al2O3 | Fe2O3 | CaO | MgO | SO3 | TiO2 | f-CaO |
| 0.44 | 13.53 | 15.08 | 1.26 | 50.69 | 2.57 | 15.25 | 0.66 | 2.28 |
Seen from table 3, gypsum is used in combination with sulfoaluminate clinker after calcination processing, is conducive to sulphate aluminium cement
System aquation basicity is in higher level.
Embodiment 8
A kind of preparation method of the high alkalinity sulphate aluminium cement for sulfur acid calcium that one embodiment of the present of invention proposes,
Include:
By gypsum in 850 DEG C of progress calcination processings, cooling obtains activated material；
Activated material, sulfoaluminate clinker and miberal powder are mixed by weight 10:70:20, grinding obtains powder；Wherein,
The component of sulfoaluminate clinker is as shown in table 5；
The high alkalinity sulphate aluminium cement of sulfur acid calcium is prepared with the powder.
The high alkalinity sulphate aluminium cement aquation basicity of the sulfur acid calcium of embodiment 8 carries out basicity according to GB20472-2006
Measurement, pH 11.28.
Comparative example 10
A kind of preparation method for sulphate aluminium cement that a comparative example of the invention proposes comprising:
The natural gypsum, sulfoaluminate clinker and miberal powder are mixed by weight 10:70:20, grinding obtains powder；Wherein,
The component of sulfoaluminate clinker is as shown in table 5；
Sulphate aluminium cement is prepared with the powder.
The sulphate aluminium cement aquation basicity of embodiment 10 carries out Basicity Determination, pH 10.71 according to GB20472-2006.
As it can be seen that gypsum after calcination processing, is used in combination with sulfoaluminate clinker and miberal powder, is conducive to sulphate aluminium cement
System aquation basicity is in higher level.
The sulfoaluminate clinker component (weight percent) of 5 embodiment 8 of table and comparative example 10
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, according to
According to technical spirit any simple modification, equivalent change and modification to the above embodiments of the invention, this hair is still fallen within
In the range of bright technical solution.
Claims (8)
1. a kind of preparation method of the high alkalinity sulphate aluminium cement of sulfur acid calcium, characterized in that it comprises:
Substance containing calcium sulfate is subjected to calcination processing, it is cooling, obtain activated material；
By raw material grinding, powder is obtained；Wherein the raw material includes the activated material；
The high alkalinity sulphate aluminium cement of sulfur acid calcium is prepared with the powder.
2. the preparation method of the high alkalinity sulphate aluminium cement of sulfur acid calcium according to claim 1, which is characterized in that institute
The temperature for the calcining stated is 150-1500 DEG C.
3. the preparation method of the high alkalinity sulphate aluminium cement of sulfur acid calcium according to claim 1, which is characterized in that institute
The substance containing calcium sulfate stated is gypsum or anhydrite.
4. the preparation method of the high alkalinity sulphate aluminium cement of sulfur acid calcium according to claim 1, which is characterized in that institute
The raw material stated further includes sulfoaluminate clinker.
5. the preparation method of the high alkalinity sulphate aluminium cement of sulfur acid calcium according to claim 1, which is characterized in that institute
The raw material stated further includes sulfoaluminate clinker and mixing material.
6. the preparation method of the high alkalinity sulphate aluminium cement of sulfur acid calcium according to claim 5, which is characterized in that institute
The mixing material stated is at least one of slag, slag micropowder, silicon ash, nano aluminum siliceous material.
7. a kind of high alkalinity sulphate aluminium cement of sulfur acid calcium, which is characterized in that by side described in any one of claims 1-6
Method is prepared.
8. the high alkalinity sulphate aluminium cement of sulfur acid calcium according to claim 7, which is characterized in that the sulfur acid
The basicity of the high alkalinity sulphate aluminium cement of calcium is greater than 11.
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| CN201910048328.3A CN109650755B (en) | 2019-01-18 | 2019-01-18 | High-alkalinity sulphate aluminium cement containing calcium sulphate and preparation method thereof |
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| CN108358572A (en) * | 2018-04-28 | 2018-08-03 | 武汉科技大学 | A kind of preparation method of the enhanced sulphoaluminate cement base material of alkali-activated carbonatite |
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2019
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