CN106746821A - A kind of application of power plant's activation slag and its II grade of flyash of replacement in concrete - Google Patents
A kind of application of power plant's activation slag and its II grade of flyash of replacement in concrete Download PDFInfo
- Publication number
- CN106746821A CN106746821A CN201611252596.XA CN201611252596A CN106746821A CN 106746821 A CN106746821 A CN 106746821A CN 201611252596 A CN201611252596 A CN 201611252596A CN 106746821 A CN106746821 A CN 106746821A
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- China
- Prior art keywords
- slag
- flyash
- grade
- power plant
- activation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/10—Burned or pyrolised refuse
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A kind of application of power plant's activation slag and its II grade of flyash of replacement in concrete.400 or so, fineness 0.045 tails over control within 20 25 to the control of its specific surface area, and loss on ignition only has 0.84, and it is 101 to need water ratio, and intensity activity is 72.7.Slag after activation needs water ratio identical with power plant II flyash, and intensity activity improves 2.8%, loss on ignition only has 0.84, it is smaller than II grade of flyash, harmful components are relatively small, the problem that plant slag is nowhere stacked and sold is not only solved, while also improving the value of slag, considerable economic worth is produced.
Description
Technical field
The present invention relates to slag applied technical field, specifically a kind of power plant's activation slag and its II grade of flyash of replacement exist
Application in concrete.
Background technology
Thermal power plant after coal combustion per ton therein, has generated largely ash content by coal fired power generation, often burns one ton
Coal slightly produces 25% flyash and 2.5% slag, but II flyash of power plant is generally used for mixing plant production concrete and uses
Used with production cement, and the slag of power plant is poor due to grindability, cement plant also fewer and feweri, and the stacking of substantial amounts of slag
Just into the worry of coal-burning power plant, therefore, it is necessary to by the activation to plant slag, turn waste into wealth.
The content of the invention
It is an object of the invention to provide application of the II grade of flyash of a kind of power plant activation slag and its replacement in concrete,
Slag after it is activated needs water ratio identical with power plant II flyash, and intensity activity improves 2.8%, and loss on ignition only has 0.84, than II
Level flyash is small, and harmful components are relatively small.
The purpose of the present invention is achieved through the following technical solutions：A kind of power plant activates slag, and its scheme is as follows：
It includes following chemical composition：
| LOSS | SiO2 | Fe2O3 | Al2O3 | CaO | MgO | f-CaO | CL- | |
| Activation slag | 0.84 | 56.01 | 6.98 | 27.28 | 5.32 | 0.88 | 0.15 | 0.002 |
Its performance is as follows：
Application of the II grade of flyash in concrete is substituted, its scheme is as follows：Its alternative II grade of flyash is with cement in coagulation
Used in soil, specific substitution ratio is as follows：
| Clinker | Flyash | Stone | Gypsum | Activation slag | 28 days intensity（Mpa） | |
| Activation slag | 65% | 10.5% | 5.0% | 4.5% | 15.0% | 48.5 |
Beneficial effects of the present invention：Slag after activation needs water ratio identical with power plant II flyash, and intensity activity improves 2.8%,
Loss on ignition only has 0.84, smaller than II grade of flyash, and harmful components are relatively small, not only solves plant slag and nowhere stacks and sell
The problem sold, while also improving the value of slag, produces considerable economic worth.
Specific embodiment
Experiment raw material：
Plant slag
The flyash of power plant II
Iso standard sand
Water（It is neutral）
Clinker (28 days intensity 58MPa)
Gypsum.
Test apparatus:
500*500 test mills
The joint-trials of 40*40*160 tri- grind
Cement mortar agitated kettle
Cement mortar mixer
Instrument for testing fluidity of colloidal cement sand
Agitator for cement mortar
Cement paste agitated kettle
Blain specific surface instrument
Electronic analytical balance（A ten thousandth）
Cement constant-temp. and-moisture maintenance
Fall autoamtic cement pressure test machine
Electric bending testing machine
Automatic maintenance room
Maintenance tank
High temperature furnace
Drying box
Sealed type sample pulverizer, analysis sampling machine.
Test procedure：
1st, 500 grams of the plant slag dried in 105 DEG C of drying boxes is taken, the distribution of particles of slag is as follows：The remaining analysis of slag screen:25
0.38%, 20 millimeters 0.96%, 15 millimeters 0.77%, 10 millimeters 6.16%, 5 millimeters 13.68%, 2.5 millimeters 8.09%, 1.25 millis of millimeter
Rice 3.47%, 0.63 millimeter 28.71%, chassis 37.78%.
2nd, 5000 grams of plant slag is taken, 500*500 test mills are put into, a certain proportion of slag active surface agent is added,
Grinding 32 minutes, 400 or so, fineness 0.045 tails over control within 20-25% for specific surface area control, fineness and II grade of fine coal
It is grey the same.Surfactant is formulated by A, B, industrial wastes C, acid, alkali with certain proportion and program, concentration 40%, PH=8,
Density:1.12g/cm3, the raw material such as including triethanolamine, triisopropanolamine, ethylene glycol.
The chemical composition analysis such as following table of activation slag and the ash of power plant II：
| LOSS | SiO2 | Fe2O3 | Al2O3 | CaO | MgO | f-CaO | CL- | |
| II flyash | 1.12 | 58.31 | 4.42 | 29.86 | 2.44 | 0.72 | 0.27 | 0.001 |
| Activation slag | 0.84 | 56.01 | 6.98 | 27.28 | 5.32 | 0.88 | 0.15 | 0.002 |
By the way that from the point of view of the chemical composition analysis data for activating II grade of flyash of slag and power plant, composition is close, and activation slag
Loss on ignition there was only 0.84, it is also smaller than II grade of flyash 1.12, so to substitute flyash more preferably, harmful components are relatively
It is small.
3rd, water is needed than experiment：Slag 90g, portland cement 210g, the normal sand 750g after test specimen activation are weighed, separately
Weigh comparative sample flyash 90g, portland cement 210g, normal sand 750g, portland cement 300g, normal sand 750g outward.
The sample appropriate water consumption of addition that will be weighed carries out mix respectively.
4th, strength test：Each 135g of slag after II grade of flyash of power plant and activation is weighed, portland cement 315g is contrasted,
Normal sand 1350g, water 225ml, do glue sand molded test.
Result of the test is as follows：
Contrasted by test data and found, the slag after activation needs water ratio and the flyash of power plant II all 101, and intensity activity has
Improved, the activity of II grade of ash of power plant's selection by winnowing only has 70.7, and the activity 72.7 after activating, improve 2.8%.
The ratio that activation slag substitutes II grade of flyash and is used in cement and concrete see the table below：
| Clinker | Flyash | Stone | Gypsum | Activation slag | 28 days intensity（Mpa） | |
| The flyash of power plant II | 72% | 18.5% | 5.0% | 4.5% | 47.2 | |
| Activation slag | 65% | 10.5% | 5.0% | 4.5% | 15.0% | 48.5 |
After it is possible to additionally incorporate by activating slag, in the case where intensity is not changed, later strength is also slightly strengthened, and cement cost is bright
It is aobvious to decline.
Activation slag, slag, the II grade of selling price of flyash such as following table of power plant：
| Activation slag | Slag | II grade of flyash of power plant | |
| Price（Yuan/ton） | 95.00 | 25.00 | 95.00 |
| Activating cost（Yuan/ton） | 28.00 | / | / |
| Profit（Yuan/ton） | 42.00 | It is unsalable | Typically |
Slag after activation can substitute II grade of flyash of power plant, and activity is higher, client all preferentially from activation slag, except deactivating
After cost of labor, profit per ton considerably increases sales volume at 42 yuan or so, while also making original overstocked slag turn waste into wealth.
Conclusion：
1st, after plant slag activation, from the point of view of the data of intensity and chemical analysis, and II grade of ash of power plant's selection by winnowing is close.
2nd, by strength test, it is entirely capable of substituting II grade of flyash, is applied in cement and concrete.
3rd, activation slag replaces II grade of flyash, not only solves the problem that plant slag is nowhere stacked and sold, while
The value of slag is also improved, considerable economic worth is produced.
4th, by activating slag, the space that the industrial residue do not sold originally is utilized makes the airborne dust stacked originally
Place becomes clear water blue sky, improves the air quality of locality, is that environmental protection lays a solid foundation.
Claims (2)
1. a kind of power plant activates slag, it is characterised in that it includes following chemical composition：
Its performance is as follows：
。
2. a kind of power plant's activation slag substitutes application of the II grade of flyash in concrete, it is characterised in that its scheme is as follows：
Its alternative II grade of flyash is used with cement in concrete, and specific substitution ratio is as follows：
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611252596.XA CN106746821A (en) | 2016-12-30 | 2016-12-30 | A kind of application of power plant's activation slag and its II grade of flyash of replacement in concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611252596.XA CN106746821A (en) | 2016-12-30 | 2016-12-30 | A kind of application of power plant's activation slag and its II grade of flyash of replacement in concrete |
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| CN106746821A true CN106746821A (en) | 2017-05-31 |
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| CN201611252596.XA Pending CN106746821A (en) | 2016-12-30 | 2016-12-30 | A kind of application of power plant's activation slag and its II grade of flyash of replacement in concrete |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107473615A (en) * | 2017-08-28 | 2017-12-15 | 安宁鼎翔新材料科技有限公司 | A kind of method that flyash in concrete is directly substituted using cinder of electric power plant |
| CN113929423A (en) * | 2021-11-30 | 2022-01-14 | 内蒙古工业大学 | Method for preparing early-strength filling body by using all solid waste of coal-fired power plant |
Citations (6)
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|---|---|---|---|---|
| CN87103506A (en) * | 1987-05-12 | 1987-11-18 | 湖北省阳新县第二水泥厂 | As the treatment of slag of producing trass cement |
| CN101486538A (en) * | 2009-02-24 | 2009-07-22 | 武汉市公路管理处 | Self-hydration activated pavement base layer |
| CN101870565A (en) * | 2010-07-14 | 2010-10-27 | 岳阳华泰资源开发利用有限责任公司 | Concrete compounded mineral admixture and preparation method thereof |
| CN103979812A (en) * | 2014-04-30 | 2014-08-13 | 威海鲁迪建筑材料科技有限公司 | High-performance high-activity concrete admixture |
| CN105753355A (en) * | 2015-12-29 | 2016-07-13 | 安徽省高迪环保股份有限公司 | Production method of superfine modified coal ash |
| CN105948635A (en) * | 2016-04-28 | 2016-09-21 | 福建洋屿环保科技股份有限公司 | Method for preparing autoclaved fly ash brick through hydration with PO saponification waste residue, garbage power plant slag and coal-fired power plant fly ash |
-
2016
- 2016-12-30 CN CN201611252596.XA patent/CN106746821A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87103506A (en) * | 1987-05-12 | 1987-11-18 | 湖北省阳新县第二水泥厂 | As the treatment of slag of producing trass cement |
| CN101486538A (en) * | 2009-02-24 | 2009-07-22 | 武汉市公路管理处 | Self-hydration activated pavement base layer |
| CN101870565A (en) * | 2010-07-14 | 2010-10-27 | 岳阳华泰资源开发利用有限责任公司 | Concrete compounded mineral admixture and preparation method thereof |
| CN103979812A (en) * | 2014-04-30 | 2014-08-13 | 威海鲁迪建筑材料科技有限公司 | High-performance high-activity concrete admixture |
| CN105753355A (en) * | 2015-12-29 | 2016-07-13 | 安徽省高迪环保股份有限公司 | Production method of superfine modified coal ash |
| CN105948635A (en) * | 2016-04-28 | 2016-09-21 | 福建洋屿环保科技股份有限公司 | Method for preparing autoclaved fly ash brick through hydration with PO saponification waste residue, garbage power plant slag and coal-fired power plant fly ash |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107473615A (en) * | 2017-08-28 | 2017-12-15 | 安宁鼎翔新材料科技有限公司 | A kind of method that flyash in concrete is directly substituted using cinder of electric power plant |
| CN113929423A (en) * | 2021-11-30 | 2022-01-14 | 内蒙古工业大学 | Method for preparing early-strength filling body by using all solid waste of coal-fired power plant |
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Application publication date: 20170531 |
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