CN105621910A - Sulphate aluminum cement clinker and preparation method thereof and sulphate aluminum cement - Google Patents
Sulphate aluminum cement clinker and preparation method thereof and sulphate aluminum cement Download PDFInfo
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- CN105621910A CN105621910A CN201511000533.0A CN201511000533A CN105621910A CN 105621910 A CN105621910 A CN 105621910A CN 201511000533 A CN201511000533 A CN 201511000533A CN 105621910 A CN105621910 A CN 105621910A
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- cement clinker
- 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
-
- 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
- C04B7/36—Manufacture of hydraulic cements in general
-
- 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
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
- C04B7/42—Active ingredients added before, or during, the burning process
- C04B7/421—Inorganic materials
- C04B7/424—Oxides, Hydroxides
-
- 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
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
- C04B7/42—Active ingredients added before, or during, the burning process
- C04B7/421—Inorganic materials
- C04B7/425—Acids or salts thereof
-
- 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
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
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- 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)
Abstract
The invention discloses a sulphate aluminum cement clinker and a preparation method thereof. The sulphur aluminate cement clinker is prepared from, by weight, 20-25 parts of gypsum, 30-35 parts of pulverized fuel ash, 20-25 parts of kaolin, 5-10 parts of coal gangue, 10-15 parts of bauxite and an additive, wherein the additive is the mixture of potassium permanganate, manganese dioxide and barium sulfate, and the mass of the additive accounts for 0.02-0.05% of the total mass of the mixture of the gypsum, the pulverized fuel ash, the kaolin, the coal gangue and the bauxite. Compared with a sulphate aluminum cement clinker production process, the resource and energy consumption is low, the sintering temperature is low, and the recycling, reducing and harmless purposes of solid industrial waste residues are achieved.
Description
Technical field
The invention belongs to cement clinker production technical field, it is specifically related to a kind of sulphoaluminate cement clinker and its preparation method, aluminosulfate cement.
Background technology
Along with concrete is day by day improved by industry and covil construction in all many-sided requirements such as high strength, corrosion-resistant, weathering resistance, self-compacting, anti-drying shrinkage, impervious and suppression alkali aggregate reactions, the research and practice of GHPC (GHPC) is flourish, active mineral admixture beyond cement has become one of indispensable constituent materials of GHPC, this kind of active mineral admixture, has been referred to as concrete 6th component.
CN104909638A discloses a kind of the reinforcement of concrete complex mineral blending material, comprises cement clinker, limestone powder, flyash, ore deposit powder and silicon ash, and its weight percent is cement clinker 15��20%, ore deposit powder 30��40%, silicon ash 8��15%, limestone powder 20��30%, flyash 15��25%. Above-mentioned complex mineral blending material mixes gelling material with the ratio of 20��40%, it is to increase economic benefit.
Silicon ash is as the byproduct of refining ferro-silicon and Pure Silicon Metal, and source is few, expensive, and silicon ash dispersity is big, packaging and transport difficult, and when silicon ash component uses as GHPC high-activity mineral blending material, operation easier is big, and production cost is higher. Also there is the differential substituted for silicon ash utilizing metakaolin, Coaseries kaolin to be prepared under high degree of dispersion by control dehydration temperaturre in recent years, also certain effect is achieved, but the source of this kind of mineral is limited, belong to non-renewable natural resources, use such mineral in a large number and do not meet the developing direction in GHPC future.
CN101863629A discloses a kind of method that solid industrial residue produces sulphoaluminate cement clinker, it is taking desulfurated plaster, flyash, carbide slag, low grade coal, bauxitic clay as main raw material, produces sulphoaluminate cement clinker with lower cost and resource consumption. Flyash, desulfurized gypsum and other solid industrial residue have been carried out effective utilization, and have reduced energy consumption by the method.
The above-mentioned method utilizing solid industrial residue to produce sulphoaluminate cement clinker, firing temperature is 1200��1400 DEG C, suitable with the firing temperature of existing sulphoaluminate cement clinker, can not effectively reduce production process energy consumption.
Summary of the invention
It is an object of the invention to provide a kind of sulphoaluminate cement clinker, thus solve in prior art, the problem that sulphoaluminate cement clinker firing temperature is high.
2nd object of the present invention is to provide the preparation method of above-mentioned sulphoaluminate cement clinker.
3rd object of the present invention is to provide a kind of aluminosulfate cement using above-mentioned sulphoaluminate cement clinker.
In order to realize above object, the technical solution adopted in the present invention is:
A kind of sulphoaluminate cement clinker, is made up of the raw material of admixture and following weight part: 20��25 parts, gypsum, 30��35 parts, flyash, kaolin 20��25 parts, coal gangue 5��10 parts, bauxitic clay 10��15 parts;
Described admixture is the mixture of potassium permanganate, Manganse Dioxide and barium sulfate composition; The quality of admixture is the 0.02��0.05% of the mixture total mass of gypsum, flyash, kaolin, coal gangue and bauxitic clay composition.
In above raw material, gypsum can be the desulfurated plaster from power plant desulfurization island. Kaolin can be the kaolin tankage of ceramics factory. Flyash can be selected from the flyash that power plant's dust-removal system produces. Coal gangue can be selected from slag field, colliery.
Sulphoaluminate cement clinker provided by the invention, it is possible to prepare sulphoaluminate cement clinker by raw material of solid industrial residue, it is achieved that the resource utilization of solid industrial residue, minimizing and innoxious use. With the admixture of potassium permanganate, Manganse Dioxide and barium sulfate composition, play solid state chemistry oxygenation effect, chemical reaction temperature can be reduced on the one hand, save calcining coal consumption, eliminate the H that sulplo-aluminate forming process produces on the other hand2S gas so that it is form H2O and SO3And be cured in grog and go, thus overcome H2S gas is to the pollution of environment; Barium sulfate can introduce heavy metal oxide, generates low melting point mineral barium-bearing calcium sulfo-aluminate, it is possible to promotes that sulplo-aluminate generates at lower temperatures. Sulphoaluminate cement clinker comprises mineral admixture composition simultaneously, can be used as GHPC active mineral admixture and uses, reduces concrete production cost and energy consumption, it is to increase the over-all propertieies such as concrete anti-erosion, weather resistance.
Preferably, the quality of admixture is the 0.03% of the mixture total mass of gypsum, flyash, kaolin, coal gangue and bauxitic clay composition.
In described admixture, the weight percent of each component is: potassium permanganate 15��25%, Manganse Dioxide 3��8%, barium sulfate 70��80%. Preferably, in described admixture, the weight percent of each component is: potassium permanganate 20%, Manganse Dioxide 5%, barium sulfate 75%.
The preparation method of above-mentioned sulphoaluminate cement clinker, comprising: the mixture of gypsum, flyash, kaolin, coal gangue, bauxitic clay and admixture composition is carried out powder mill, homogenizing, and 850��950 DEG C are burnt till, to obtain final product.
Gypsum, coal gangue, kaolin and bauxitic clay can be dried before grinding by powder, and control moisture is all less than 2wt%.
During described powder grinds, control 0.045mm square hole sieve screenings��4wt%. For making grinding process efficiency higher, first the mixture of gypsum, flyash, kaolin, coal gangue and bauxitic clay composition can be carried out powder mill, in the process of powder mill, add admixture.
In described homogenizing, homogenization coefficient >=4. Homogenization process adopts homogenization installation that raw material are fully mixed, and plays the effect of stable raw ingredients, and for follow-up is burnt till, the cement clinker of preparation stable performance is ready.
Firing temperature is preferably 950 DEG C. The described time burnt till is 20min.
Cooling after burning till, in process of cooling control 20min, product is cooled to higher than envrionment temperature 60 DEG C.
The preparation method of sulphoaluminate cement clinker provided by the invention, firing temperature is low to moderate 850��950 DEG C, and resource and energy consumption are few, it is achieved that solid industrial waste residue resource, minimizing and innoxious target, meet the principle of low-carbon economy.
Using an aluminosulfate cement for above-mentioned sulphoaluminate cement clinker, be made up of sulphoaluminate cement clinker and cement mixture, the mass percentage of sulphoaluminate cement clinker is 10��25%.
Preferably, described cement mixture is flyash and/or coal gangue. By powder mill after sulphoaluminate cement clinker and cement mixture mixing, obtain aluminosulfate cement.
Aluminosulfate cement provided by the invention, has low carbon, the feature that corrosion-resistant, intensity is high, can greatly reduce the mixed ratio of cement clinker in high-performance cement, remarkable in economical benefits; When being applied to GHPC, moreover it is possible to play the function of exciting agent, thus improve the over-all properties of GHPC further.
Embodiment
Below in conjunction with embodiment, the invention will be further described. In following examples, source and the physical properties of each raw material are as shown in table 1.
The source of each raw material of table 1 and physical properties
Embodiment 1
The sulphoaluminate cement clinker of the present embodiment, is made up of the raw material of admixture and following weight part: desulfurated plaster 20 parts, 35 parts, flyash, kaolin 20 parts, coal gangue 10 parts, bauxitic clay 15 parts; Admixture is made up of 20wt% potassium permanganate, 5wt% Manganse Dioxide and 75wt% barium sulfate, and the quality of admixture is the 0.03% of desulfurated plaster, flyash, kaolin, coal gangue and bauxitic clay total mass.
The preparation method of the sulphoaluminate cement clinker of the present embodiment, comprises the following steps:
1) moisture drying of desulfurated plaster, coal gangue and kaolin is all less than 2wt% to moisture; The mixture of desulfurated plaster, flyash, kaolin, coal gangue and bauxitic clay composition being carried out powder mill, adds admixture in grinding process, it is 4wt% that powder is milled to the screenings recorded with 0.45mm square hole sieve; Rear stirring homogenizing, makes homogenization coefficient be 4, obtains homogenizing product;
2) by step 1) gained homogenizing product burns till at 950 DEG C, and firing time is 20min; In 20min, product is cooled to higher than envrionment temperature 60 DEG C after going out kiln, to obtain final product.
The aluminosulfate cement of the present embodiment, the mass content of sulphoaluminate cement clinker is 10%, and all the other are blended material; In blended material, the mass ratio of flyash and coal gangue is 1:1.
Embodiment 2
The sulphoaluminate cement clinker of the present embodiment, is made up of the raw material of admixture and following weight part: desulfurated plaster 25 parts, 30 parts, flyash, kaolin 22 parts, coal gangue 8 parts, bauxitic clay 15 parts; Admixture is made up of 25wt% potassium permanganate, 3wt% Manganse Dioxide and 72wt% barium sulfate, and the quality of admixture is the 0.02% of desulfurated plaster, flyash, kaolin, coal gangue and bauxitic clay total mass.
The preparation method of the sulphoaluminate cement clinker of the present embodiment, comprises the following steps:
1) moisture drying of desulfurated plaster, coal gangue and kaolin is all less than 2wt% to moisture; The mixture of desulfurated plaster, flyash, kaolin, coal gangue and bauxitic clay composition being carried out powder mill, adds admixture in grinding process, it is 4wt% that powder is milled to the screenings recorded with 0.45mm square hole sieve; Rear stirring homogenizing, makes homogenization coefficient be 4, obtains homogenizing product;
2) by step 1) gained homogenizing product burns till at 900 DEG C, and firing time is 20min; In 20min, product is cooled to higher than envrionment temperature 60 DEG C after going out kiln, to obtain final product.
The aluminosulfate cement of the present embodiment, the mass content of sulphoaluminate cement clinker is 15%, and all the other are blended material; In blended material, the mass ratio of flyash and coal gangue is 1:1.
Embodiment 3
The sulphoaluminate cement clinker of the present embodiment, is made up of the raw material of admixture and following weight part: desulfurated plaster 23 parts, 32 parts, flyash, kaolin 25 parts, coal gangue 5 parts, bauxitic clay 10 parts; Admixture is made up of 15wt% potassium permanganate, 5wt% Manganse Dioxide and 80wt% barium sulfate, and the quality of admixture is the 0.05% of desulfurated plaster, flyash, kaolin, coal gangue and bauxitic clay total mass.
The preparation method of the sulphoaluminate cement clinker of the present embodiment, comprises the following steps:
1) moisture drying of desulfurated plaster, coal gangue and kaolin is all less than 2wt% to moisture; The mixture of desulfurated plaster, flyash, kaolin, coal gangue and bauxitic clay composition being carried out powder mill, adds admixture in grinding process, it is 4wt% that powder is milled to the screenings recorded with 0.45mm square hole sieve; Rear stirring homogenizing, makes homogenization coefficient be 4, obtains homogenizing product;
2) by step 1) gained homogenizing product burns till at 850 DEG C, and firing time is 20min; In 20min, product is cooled to higher than envrionment temperature 60 DEG C after going out kiln, to obtain final product.
The aluminosulfate cement of the present embodiment, the mass content of sulphoaluminate cement clinker is 25%, and all the other are blended material; In blended material, the mass ratio of flyash and coal gangue is 1:1.
Comparative example 1��3
The aluminosulfate cement of comparative example 1��3, becomes with conventional sulphoaluminate cement clinker and blended material powder mill, and blended material is the mixture that flyash, coal gangue form by the mass ratio of 1:1.
In comparative example 1, the mass content of conventional sulphoaluminate cement clinker is 30%; In comparative example 2, the mass content of conventional sulphoaluminate cement clinker is 40%; In comparative example 3, the mass content of conventional sulphoaluminate cement clinker is 50%.
Test example 1
The aluminium sesquioxide content of each embodiment gained sulphoaluminate cement clinker, dioxide-containing silica and 3d ultimate compression strength are detected by this test example, detection carries out according to the technical requirements of the sulphoaluminate cement clinker that GB20472-2006 " aluminosulfate cement " annex A specifies, result is as shown in table 2.
The technical indicator of each embodiment gained sulphoaluminate cement clinker of table 2
| Project | Al2O3Content, wt% | SiO2Content, wt% | 3d ultimate compression strength, MPa |
| GB20472-2006 | ��30.0 | ��10.5 | ��55 |
| Embodiment 1 | 45 | 8 | 62 |
| Embodiment 2 | 48 | 9 | 66 |
| Embodiment 3 | 49 | 8 | 65 |
By the test-results of table 2 it will be seen that the relevant art index of the cement clinker of gained sulplo-aluminate of the present invention is all better than the requirement of GB20472-2006, the ultimate compression strength after 3d is up to 66MPa, and over-all properties is good.
Test example 2
This test example detects the intensity of the aluminosulfate cement of each embodiment. Result is as shown in table 3.
The intensity of each embodiment of table 3 and comparative example gained aluminosulfate cement
By the test-results of table 3 it will be seen that the aluminosulfate cement of the present invention can reach identical strength level by less clinker dosage, thus be conducive to reducing clinker dosage, reduce production energy consumption, it is provided that solid waste utilize level.
Claims (10)
1. a sulphoaluminate cement clinker, it is characterised in that, it is made up of the raw material of admixture and following weight part: 20��25 parts, gypsum, 30��35 parts, flyash, kaolin 20��25 parts, coal gangue 5��10 parts, bauxitic clay 10��15 parts;
Described admixture is the mixture of potassium permanganate, Manganse Dioxide and barium sulfate composition; The quality of admixture is the 0.02��0.05% of the mixture total mass of gypsum, flyash, kaolin, coal gangue and bauxitic clay composition.
2. sulphoaluminate cement clinker as claimed in claim 1, it is characterised in that, in described admixture, the weight percent of each component is: potassium permanganate 15��25%, Manganse Dioxide 3��8%, barium sulfate 70��80%.
3. sulphoaluminate cement clinker as claimed in claim 1, it is characterised in that, the quality of admixture is the 0.03% of the mixture total mass of gypsum, flyash, kaolin, coal gangue and bauxitic clay composition.
4. sulphoaluminate cement clinker as claimed in claim 2, it is characterised in that, in described admixture, the weight percent of each component is: potassium permanganate 20%, Manganse Dioxide 5%, barium sulfate 75%.
5. the preparation method of a sulphoaluminate cement clinker as claimed in claim 1, it is characterized in that, comprising: the mixture of gypsum, flyash, kaolin, coal gangue, bauxitic clay and admixture composition is carried out powder mill, homogenizing, 850��950 DEG C are burnt till, to obtain final product.
6. the preparation method of sulphoaluminate cement clinker as claimed in claim 5, it is characterised in that, during described powder grinds, control 0.045mm square hole sieve screenings��4wt%.
7. the preparation method of sulphoaluminate cement clinker as claimed in claim 5, it is characterised in that, in described homogenizing, homogenization coefficient >=4.
8. the preparation method of sulphoaluminate cement clinker as claimed in claim 5, it is characterised in that, described in time of burning till be 20min.
9. the preparation method of sulphoaluminate cement clinker as claimed in claim 5, it is characterised in that, cool after burning till, in process of cooling control 20min, product is cooled to higher than envrionment temperature 60 DEG C.
10. one kind uses the aluminosulfate cement of the sulphoaluminate cement clinker described in claim 1, it is characterised in that, it is made up of sulphoaluminate cement clinker and cement mixture, the mass percentage of sulphoaluminate cement clinker is 10��25%.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365475A (en) * | 2016-08-31 | 2017-02-01 | 高州市新力水泥制品有限公司 | Anti-corrosion cement and application thereof |
| CN107827440A (en) * | 2017-10-19 | 2018-03-23 | 袁玲燕 | A kind of enhanced colliery wastes brick |
| CN108083659A (en) * | 2017-12-28 | 2018-05-29 | 安徽新瑞重工股份有限公司 | A kind of clinker and preparation method thereof |
| CN113683333A (en) * | 2021-07-22 | 2021-11-23 | 山东大学 | Desulfurized gypsum retarder, preparation method and application thereof in sulphoaluminate cement |
| CN115448623A (en) * | 2022-08-31 | 2022-12-09 | 中南大学 | A method of preparing cementitious material by sintering and activating coal gangue |
| CN116854431A (en) * | 2023-07-10 | 2023-10-10 | 陕西曲尘香能源科技有限公司 | High-strength concrete composite material and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863629A (en) * | 2010-06-28 | 2010-10-20 | 长治市漳山建材有限公司 | Method for preparing sulphoaluminate cement clinker mainly from industrial solid waste |
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2015
- 2015-12-28 CN CN201511000533.0A patent/CN105621910A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101863629A (en) * | 2010-06-28 | 2010-10-20 | 长治市漳山建材有限公司 | Method for preparing sulphoaluminate cement clinker mainly from industrial solid waste |
Non-Patent Citations (1)
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| 王燕谋等: "《硫铝酸盐水泥》", 31 December 1999, 北京工业大学出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365475A (en) * | 2016-08-31 | 2017-02-01 | 高州市新力水泥制品有限公司 | Anti-corrosion cement and application thereof |
| CN107827440A (en) * | 2017-10-19 | 2018-03-23 | 袁玲燕 | A kind of enhanced colliery wastes brick |
| CN108083659A (en) * | 2017-12-28 | 2018-05-29 | 安徽新瑞重工股份有限公司 | A kind of clinker and preparation method thereof |
| CN113683333A (en) * | 2021-07-22 | 2021-11-23 | 山东大学 | Desulfurized gypsum retarder, preparation method and application thereof in sulphoaluminate cement |
| CN115448623A (en) * | 2022-08-31 | 2022-12-09 | 中南大学 | A method of preparing cementitious material by sintering and activating coal gangue |
| CN116854431A (en) * | 2023-07-10 | 2023-10-10 | 陕西曲尘香能源科技有限公司 | High-strength concrete composite material and preparation method thereof |
| CN116854431B (en) * | 2023-07-10 | 2024-04-16 | 陕西曲尘香能源科技有限公司 | High-strength concrete composite material and preparation method thereof |
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