CN108793785A - A kind of low temperature preparation method of sulphur silicate-belite sulphoaluminate cement - Google Patents
A kind of low temperature preparation method of sulphur silicate-belite sulphoaluminate cement Download PDFInfo
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- CN108793785A CN108793785A CN201810818378.0A CN201810818378A CN108793785A CN 108793785 A CN108793785 A CN 108793785A CN 201810818378 A CN201810818378 A CN 201810818378A CN 108793785 A CN108793785 A CN 108793785A
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- raw material
- low temperature
- sulphur
- silicate
- sulphoaluminate cement
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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
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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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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of low temperature preparing methods of sulphur silicate-belite sulphoaluminate cement, include the following steps：(1) that raw material is put into mixing in planetary ball mill is levigate；Wherein, raw material includes alumina-silica raw material, aluminum raw material, calcareous raw material, siliceous raw material, industrial gypsum；(2) step (1) mixed raw material is pressed into cake, be placed in high-temperature electric resistance furnace, in 700 DEG C of -1200 DEG C of calcinings of temperature, then take out chilling；(3) the product grinding for obtaining step (2)；(4) by the product arrived and the dihydrate gypsum mixing, levigate in step (3), cement is made.The present invention is directly to make raw material using the Common Waste containing intermediate product phase cacoclasite and other aluminates, and raw material need not be modified or other processing, saves the utilization rate of the raw material improved while processing cost.Preceding current cost is greatly reduced, while solving environmental problem caused by industrial residue.
Description
Technical field
The invention belongs to field of material technology, and in particular to a kind of to utilize intermediate product low temperature preparation sulphur silicate-Baily
The preparation method and its product of spy-sulphoaluminate cement clinker.
Background technology
Cement plays an important role to progress of human society and socio-economic development as the maximum construction material of dosage
Meanwhile also producing the high energy and resource consumption and greenhouse gas emission.It is high that calcium sulphoaluminate makes sulphate aluminium cement have
Early strength and high later strength, it is also impervious, freeze proof, anti-corrosion the advantages that；Calcium sulphoaluminate hydration activity is very high simultaneously, early stage
A large amount of entringite (AFt), C-S-H and aluminium hydroxide (AH can be formed3) gel, so that the early strength of cement is greatly improved.
Sulphur calcium silicates mineral are considered always as a kind of intermediate transisting phase in sulphoaluminate cement clinker calcination process
It is a kind of low hydration activity or even inert mineral, it is 1050 DEG C -1200 DEG C to form temperature range.And sulphate aluminium cement is ripe
The calcination temperature of material is 1250 DEG C or more, and in the temperature, sulphur calcium silicates mineral can thoroughly be decomposed to form belite and anhydrite.Most
Closely studies have shown that in sulphate aluminium cement system, sulphur calcium silicates mineral show high hydration activity so that aluminium sulfate water
The mid-term intensity of mud is greatly improved.
The calcination temperature of sulphoaluminate cement clinker is at 1250 DEG C or more, and in order to make in sulphoaluminate cement clinker, there are sulphur
Calcium silicates mineral, it usually needs promote sulphur calcium silicates to be formed at a temperature of secondary clacining, increase sulphur silicic acid to a certain extent
The CO of salt-belite sulphoaluminate cement2Discharge and energy consumption.
The existing method for preparing calcium sulphoaluminate is related to such as application No. is 201510066039.8 Chinese patent application
A kind of synthetic method of sulphate aluminium cement, which is characterized in that the sulphur containing mass ratio 5-35% in the sulphate aluminium cement
Calcium silicates mineral, by raw material according to calcining suitable for calcinating system, then according to the calcination temperature of setting and soaking time into
Row secondary clacining will form a kind of sulphate aluminium cement by mixing gypsum grinding outside the clinker of secondary clacining.Its deficiency exists
In first calcination temperature height, secondary clacining program is complicated, high energy consumption, and can cause sulphur pollution.
Such as application No. is 201710400866.5 Chinese patent applications to disclose a kind of sulphur calcium silicates-sulphate aluminium cement
Preparation method, by lime stone, ardealite is that primary raw material is calcined at 1050-1200 DEG C, and ardealite promotes to form sulphur silicic acid
Calcium.
The prior art has the following disadvantages：
1) aluminium sulfate calcination temperature is higher, thus primary calcining cannot form sulphur silicate-belite-aluminium sulfate three
First system；
2) decomposition for leading to sulfate and sulphur silicate in high-temperature calcination, has SO2Discharge, cause sulphur dirty
Dye；
3) decomposition for leading to sulphur silicate in high-temperature calcination needs secondary clacining, program complicated, it is difficult to which industry is raw
Production；
4) low temperature calcination ardealite promotes to form sulphur calcium silicates, reduces reaction temperature.One side decomposing ardealite generates sulphur
Pollution, another aspect decomposing ardealite need additive to promote its decomposition, cost relatively high.
Invention content
The object of the present invention is to provide a kind of low temperature preparing methods of sulphur silicate-belite sulphoaluminate cement, with solution
Certainly calcination temperature existing in the prior art is high, problem of program complexity.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of low temperature preparation method of sulphur silicate-belite sulphoaluminate cement, includes the following steps：
(1) that raw material is put into mixing in planetary ball mill is levigate；Wherein, raw material include alumina-silica raw material, aluminum raw material,
Calcareous raw material, siliceous raw material, industrial gypsum；
(2) step (1) mixed raw material is pressed into cake, be placed in high-temperature electric resistance furnace, forged for 700 DEG C -1200 DEG C in temperature
It burns, then takes out chilling；
(3) the product grinding for obtaining step (2)；
(4) by the product arrived and the dihydrate gypsum mixing, levigate in step (3), cement is made.
In the step (1), the quality proportioning of raw material is：Alumina-silica raw material：Aluminum raw material：Calcareous raw material：Siliceous raw material：
Industrial gypsum=18.23~24.56：6.09~23.76：35.86~51.56：11.23~12.47：6.72~12.91.
In the step (1), alumina-silica raw material discards aluminate-silicate refractory, and aluminum raw material is bauxite, high aluminum water
Mud, CaO-Al2O3One kind in base refining slag, calcareous raw material are lime stone, and siliceous raw material is gangue, and industrial gypsum is desulfurization
The industrial waste gypsums such as gypsum.
In the step (2), mixed raw material is pressed into cake under 2-6MPa pressure.
In the step (2), 1h-3h is kept the temperature after 700 DEG C -1200 DEG C are warming up in high-temperature electric resistance furnace.
In the step (3), the square hole screen that grinding to its particle can be all 80 μm by aperture, specific surface area reaches
To 350~420m2/Kg。
Advantageous effect：The present invention is direct using common containing intermediate product phase cacoclasite and other aluminates
Waste makees raw material, and raw material need not be modified or other processing, saves the utilization rate of the raw material improved while processing cost.
Preceding current cost is greatly reduced, while solving environmental problem caused by industrial residue.Also, the present invention need not carry out secondary
Calcining not will produce a large amount of carbon dioxide, increase environmental pressure, another aspect calcination temperature is low, and then low energy consumption.Therefore originally
Invention be a kind of low-carbon, green preparation method.
Description of the drawings
Fig. 1 is the XRD analysis of the product of embodiment 1.
Specific implementation mode
A kind of low temperature preparation method of sulphur silicate-belite sulphoaluminate cement of the present invention, includes the following steps：
(1) that raw material is put into mixing in planetary ball mill is levigate；Wherein, raw material include alumina-silica raw material, aluminum raw material,
Calcareous raw material, siliceous raw material, industrial gypsum；The quality proportioning of raw material is：Alumina-silica raw material：Aluminum raw material：Calcareous raw material：It is siliceous
Raw material：Industrial gypsum=18.23~24.56：6.09~23.76：35.86~51.56：11.23~12.47：6.72~
12.91；Wherein, alumina-silica raw material discards aluminate-silicate refractory, and aluminum raw material is bauxite, high alumina cement, CaO-Al2O3
One kind in base refining slag, calcareous raw material are lime stone, and siliceous raw material is gangue, and industrial gypsum is the Industry Wastes such as desulfurated plaster
Gypsum.
(2) step (1) mixed raw material is pressed into cake under 2-6MPa pressure, is placed in high-temperature electric resistance furnace, is warming up to
1h-3h is kept the temperature after 700 DEG C -1200 DEG C, then takes out chilling；
(3) square hole screen that the product grinding for obtaining step (2) can be all 80 μm by aperture to its particle, compares table
Area reaches 350~420m2/Kg；
(4) by the product arrived and the dihydrate gypsum mixing, levigate in step (3), cement is made.
The main chemical compositions of part material used in the present invention are as shown in table 1.
1 part material main chemical compositions (wt%) of table
Below according to specific embodiment, the present invention will be further described.
Embodiment 1
Raw material proportioning is as shown in table 2：
2 embodiment of table, 1 raw material proportioning
It is as follows：
1) batch mixing：Raw material is weighed by the quality proportioning of table 2 to be placed in planetary ball mill, grinds 120min, is pressed in 6MPa
It is pressed into cake under power；
2) it calcines：The product of step 1) is placed in high-temperature electric resistance furnace, is warming up to 700 DEG C, and keep the temperature 3h, chilling；
3) it is sieved：The square hole screen that grinding can be all 80 μm by aperture to its particle, carries out XRD tests, such as Fig. 1.
Embodiment 2
Raw material proportioning is as shown in table 3：
3 embodiment of table, 2 raw material proportioning
It is as follows：
1) batch mixing：Raw material is weighed by the quality proportioning of table 3 to be placed in planetary ball mill, 60min is ground, in 6MPa pressure
Under be pressed into cake；
2) it calcines：It after blocky sample after cooling is crushed, then is placed in high temperature furnace, sintering soak 2h, takes at 950 DEG C
Go out chilling, ball mill grinding obtains sulphoaluminate cement clinker；
3) strength test：By clinker and dihydrate gypsum mixing, levigate, cement is made, carries out 3d, the anti-foldings of 28d, resistance to compression resists
Strength character test is rolled over, such as table 4.
4 embodiment of table, 2 strength character is tested
Embodiment 3
Raw material proportioning is as shown in table 5：
5 embodiment of table, 3 raw material proportioning
It is as follows：
1) batch mixing：Raw material is weighed by the quality proportioning of table 5 to be placed in planetary ball mill, 60min is ground, in 6MPa pressure
Under be pressed into cake；
2) it calcines：After blocky sample after cooling is crushed, then it is placed in high temperature furnace, the sintering soak at 1100 DEG C
1.5h, takes out chilling, and ball mill grinding obtains sulphoaluminate cement clinker；
3) strength test：By clinker and dihydrate gypsum mixing, levigate, cement is made, carries out 3d, the anti-foldings of 28d, compressive property
Test, as shown in table 6.
6 embodiment of table, 3 strength character is tested
The result shows that：By XRD analysis at 700-1100 DEG C, keeps the temperature and form required mineral C under 20min-3h5S2$ and
C4A3$；By strength test, the anti-foldings of 28d are 7.25MPa, resistance to compression 56.59MPa.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of low temperature preparation method of sulphur silicate-belite sulphoaluminate cement, it is characterised in that：Include the following steps：
(1) that raw material is put into mixing in planetary ball mill is levigate；Wherein, raw material include alumina-silica raw material, it is aluminum raw material, calcareous
Raw material, siliceous raw material, industrial gypsum；
(2) step (1) mixed raw material is pressed into cake, be placed in high-temperature electric resistance furnace, in 700 DEG C of -1200 DEG C of calcinings of temperature, so
After take out chilling；
(3) the product grinding for obtaining step (2)；
(4) by the product arrived and the dihydrate gypsum mixing, levigate in step (3), cement is made.
2. the low temperature preparation method of sulphur silicate-belite sulphoaluminate cement according to claim 1, feature exist
In：In the step (1), the quality proportioning of raw material is：Alumina-silica raw material：Aluminum raw material：Calcareous raw material：Siliceous raw material：Industry
Gypsum=18.23~24.56：6.09~23.76：35.86~51.56：11.23~12.47：6.72~12.91.
3. the low temperature preparation method of sulphur silicate-belite sulphoaluminate cement according to claim 1 or 2, feature
It is：In the step (1), alumina-silica raw material discards aluminate-silicate refractory, aluminum raw material be bauxite, high alumina cement,
CaO-Al2O3One kind in base refining slag, calcareous raw material are lime stone, and siliceous raw material is gangue, and industrial gypsum is industrial waste rock
Cream.
4. the low temperature preparation method of sulphur silicate-belite sulphoaluminate cement according to claim 1, feature exist
In：In the step (2), mixed raw material is pressed into cake under 2-6MPa pressure.
5. the low temperature preparation method of sulphur silicate-belite sulphoaluminate cement according to claim 1, feature exist
In：In the step (2), 1h-3h is kept the temperature after 700 DEG C -1200 DEG C are warming up in high-temperature electric resistance furnace.
6. the low temperature preparation method of sulphur silicate-belite sulphoaluminate cement according to claim 1, feature exist
In：In the step (3), the square hole screen that grinding to its particle can be all 80 μm by aperture, specific surface area reaches 350
~420m2/Kg。
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| CN201810818378.0A CN108793785B (en) | 2018-07-24 | 2018-07-24 | Low-temperature preparation method of sulfosilicate-belite-sulphoaluminate cement |
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| CN201810818378.0A CN108793785B (en) | 2018-07-24 | 2018-07-24 | Low-temperature preparation method of sulfosilicate-belite-sulphoaluminate cement |
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Cited By (5)
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|---|---|---|---|---|
| CN110078393A (en) * | 2019-05-15 | 2019-08-02 | 盐城工学院 | A kind of method of low temperature preparation sulphur calcium silicates-sulphate aluminium cement |
| CN110078394A (en) * | 2019-05-15 | 2019-08-02 | 盐城工学院 | Low temperature preparation sulphur calcium silicates-belite sulphoaluminate cement clinker method |
| CN110128038A (en) * | 2019-05-15 | 2019-08-16 | 盐城工学院 | Tricalcium silicate-dicalcium silicate-calcium sulphoaluminate cement and its low temperature preparation method |
| CN110194604A (en) * | 2019-05-15 | 2019-09-03 | 盐城工学院 | Tricalcium silicate-sulphur calcium silicates-sulphate aluminium cement and its low temperature preparation method |
| CN113277758A (en) * | 2021-05-27 | 2021-08-20 | 江苏省沙钢钢铁研究院有限公司 | Preparation method of low-cost solid waste based sulphoaluminate cement |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078393A (en) * | 2019-05-15 | 2019-08-02 | 盐城工学院 | A kind of method of low temperature preparation sulphur calcium silicates-sulphate aluminium cement |
| CN110078394A (en) * | 2019-05-15 | 2019-08-02 | 盐城工学院 | Low temperature preparation sulphur calcium silicates-belite sulphoaluminate cement clinker method |
| CN110128038A (en) * | 2019-05-15 | 2019-08-16 | 盐城工学院 | Tricalcium silicate-dicalcium silicate-calcium sulphoaluminate cement and its low temperature preparation method |
| CN110194604A (en) * | 2019-05-15 | 2019-09-03 | 盐城工学院 | Tricalcium silicate-sulphur calcium silicates-sulphate aluminium cement and its low temperature preparation method |
| CN110078393B (en) * | 2019-05-15 | 2022-01-11 | 盐城工学院 | Method for preparing calcium sulfosilicate-sulphoaluminate cement at low temperature |
| CN113277758A (en) * | 2021-05-27 | 2021-08-20 | 江苏省沙钢钢铁研究院有限公司 | Preparation method of low-cost solid waste based sulphoaluminate cement |
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