CN103601384B - A kind of method of modifying of desulfurized powder coal ash - Google Patents
A kind of method of modifying of desulfurized powder coal ash Download PDFInfo
- Publication number
- CN103601384B CN103601384B CN201310519851.2A CN201310519851A CN103601384B CN 103601384 B CN103601384 B CN 103601384B CN 201310519851 A CN201310519851 A CN 201310519851A CN 103601384 B CN103601384 B CN 103601384B
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- CN
- China
- Prior art keywords
- flyash
- coal ash
- powder coal
- grinding
- desulfurized powder
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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
-
- 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
A method of modifying for desulfurized powder coal ash, first carries out grinding to described desulfurized powder coal ash, and obtaining specific surface area is 350 ~ 400m
2flyash after the grinding of/Kg; Next particle diameter in flyash after described grinding is dropped to less than 5% lower than the granular mass per-cent of 6 microns and obtain sorting flyash; Flyash carbon adsorption inhibitor is added in the most backward described sorting flyash.The present invention adopt grinding, sorting mode to reduce the sulphur content in flyash, improve the activity of flyash simultaneously.Utilize benzylamine, di-isopropyl sodium naphthalene sulfonate, ethylene glycol phenyl ether as carbon adsorption inhibitor to reduce the water requirement of desulfurization fine coal, desulfurized powder coal ash is reached can the effect of sizable application.
Description
Technical field
The present invention relates to a kind of method of modifying of desulfurized powder coal ash, belong to building material technical field.
Background technology
Along with the further reinforcement of environmental protection requirement, the disposal and utilization of a large amount of desulfurizing byproduct and desulfurized powder coal ash has caused the concern of insider.Desulfurized powder coal ash is a kind of by product produced in process of production by circular fluid bed.Because circular fluid bed is lower to coal quality requirements, thermo-efficiency is high, and boiler combustion temperature only has 800 ~ 900 DEG C, and the particle of the flyash therefore generated is thicker, and calcium, sulphur content high (easily cause use the cement of this flyash or concrete coagulating time partially long), water requirement are large, active low.The comprehensive utilization of this kind of flyash is restricted.
The reason that calcium in desulfurized powder coal ash, sulphur content are high is that the sweetening agent (Wingdale) added in combustion causes.The problem that desulfurized powder coal ash water requirement is larger is because pulverized coal particle is comparatively thick, burning is failed fully, and gac remains and causes.The low major cause of activity of desulfurized powder coal ash is that its particle is comparatively thick, and temperature of combustion is low, and vitreum content is lower.
Summary of the invention
The object of the invention is to provide a kind of method of modifying of desulfurized powder coal ash.
For achieving the above object, the technical solution used in the present invention is: a kind of method of modifying of desulfurized powder coal ash, first carries out grinding to described desulfurized powder coal ash, and obtaining specific surface area is 350 ~ 400m
2flyash after the grinding of/Kg; Next particle diameter in flyash after described grinding is dropped to less than 5% lower than the mass percent of the particle of 6 microns and obtain sorting flyash; Flyash carbon adsorption inhibitor is added in the most backward described sorting flyash.
Preferred technical scheme is: described grinding mode is ball milling or Vertical Mill.
Preferred technical scheme is: described flyash carbon adsorption inhibitor is the mixture of benzylamine, di-isopropyl sodium naphthalene sulfonate and ethylene glycol phenyl ether composition.
Preferred technical scheme is: described benzylamine, mass ratio between di-isopropyl sodium naphthalene sulfonate and ethylene glycol phenyl ether are 1 ~ 2:1 ~ 2:3 ~ 5.
Preferred technical scheme is: the addition of described flyash carbon adsorption inhibitor is 0.1 ~ 0.3% of described sorting flyash quality.
Because technique scheme is used, the present invention compared with prior art has following advantages and effect:
The present invention is the rule of heterogeneous distribution with particle diameter according to the chemistry of desulfurized powder coal ash, mineral composition.The mode of employing grinding, sorting reduces the sulphur content (alleviating because the sulphur content partially long problem high time of coagulation caused) in flyash, improves the activity of flyash simultaneously.Utilize benzylamine, di-isopropyl sodium naphthalene sulfonate, ethylene glycol phenyl ether as carbon adsorption inhibitor to reduce the water requirement of desulfurization fine coal, desulfurized powder coal ash is reached can the effect of sizable application.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment one: a kind of method of modifying of desulfurized powder coal ash
Wait method for testing performance reference GB/T1596-2005 " flyash in cement and concrete " to the water requirement of flyash is when active, after the impact of time of coagulation is mixed with the ratio of mass ratio 3:7 with P.O42.5 cement according to flyash, measure its time of coagulation according to GB/T1346-2001 " cement normal consistency water consumption, time of coagulation, the stability method of inspection ".
Adopt ball milling method that the specific surface area of desulfurized powder coal ash is increased to 350m
2/ Kg, carry out sorting subsequently, by particle diameter grain sorting out (this fine particle flyash sulphur content enrichment lower than 6 microns, the adjustable solidification agent of cement can be considered as), it is 5% that particle diameter is dropped to particle diameter in 5%(and flyash lower than the mass percent of the particle of 6 microns lower than the granular mass per-cent of 6 microns).While grinding, add the mixture (mass ratio 1:1:3) of benzylamine, di-isopropyl sodium naphthalene sulfonate, ethylene glycol phenyl ether composition in mill, the addition of this carbonization inhibitor is 0.1% of flyash quality.
Example 2: a kind of method of modifying of desulfurized powder coal ash
Adopt Vertical Mill mode that the specific surface area of desulfurized powder coal ash is increased to 400m
2/ Kg, carries out sorting subsequently, by particle diameter lower than 6 microns grain sorting out (this fine particle flyash sulphur content enrichment, can be considered as the adjustable solidification agent of cement), particle diameter is dropped to 3% lower than the granular mass per-cent of 6 microns.While grinding, add the mixture (mass ratio 2:1:4) of benzylamine, di-isopropyl sodium naphthalene sulfonate, ethylene glycol phenyl ether composition in mill, the addition of this carbonization inhibitor is 0.3% of flyash quality.
Example 3: a kind of method of modifying of desulfurized powder coal ash
Adopt Vertical Mill mode that the specific surface area of desulfurized powder coal ash is increased to 380m
2/ Kg, carries out sorting subsequently, by particle diameter lower than 6 microns grain sorting out (this fine particle flyash sulphur content enrichment, can be considered as the adjustable solidification agent of cement), particle diameter is dropped to 4% lower than the granular mass per-cent of 6 microns.While grinding, add the mixture (mass ratio 1.5:1:5) of benzylamine, di-isopropyl sodium naphthalene sulfonate, ethylene glycol phenyl ether composition in mill, the addition of this carbonization inhibitor is 0.2% of flyash quality.
Concrete implementation result sees the following form
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to spirit of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (3)
1. a method of modifying for desulfurized powder coal ash, is characterized in that: first carry out grinding to described desulfurized powder coal ash, and obtaining specific surface area is 350 ~ 400m
2flyash after the grinding of/Kg; Next particle diameter in flyash after described grinding is dropped to less than 5% lower than the mass percent of the particle of 6 microns and obtain sorting flyash; Flyash carbon adsorption inhibitor is added in the most backward described sorting flyash; Described flyash carbon adsorption inhibitor is the mixture of benzylamine, di-isopropyl sodium naphthalene sulfonate and ethylene glycol phenyl ether composition; Described benzylamine, mass ratio between di-isopropyl sodium naphthalene sulfonate and ethylene glycol phenyl ether three are 1 ~ 2:1 ~ 2:3 ~ 5.
2. the method for modifying of desulfurized powder coal ash according to claim 1, is characterized in that: described grinding mode is ball milling or Vertical Mill.
3. the method for modifying of desulfurized powder coal ash according to claim 1, is characterized in that: the addition of described flyash carbon adsorption inhibitor is 0.1 ~ 0.3% of described sorting flyash quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310519851.2A CN103601384B (en) | 2013-10-29 | 2013-10-29 | A kind of method of modifying of desulfurized powder coal ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310519851.2A CN103601384B (en) | 2013-10-29 | 2013-10-29 | A kind of method of modifying of desulfurized powder coal ash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103601384A CN103601384A (en) | 2014-02-26 |
| CN103601384B true CN103601384B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310519851.2A Expired - Fee Related CN103601384B (en) | 2013-10-29 | 2013-10-29 | A kind of method of modifying of desulfurized powder coal ash |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062407A (en) * | 2014-07-07 | 2014-09-24 | 江苏名和集团有限公司 | Detection method for desulfurized fly ash |
| CN108658524A (en) * | 2018-05-25 | 2018-10-16 | 海南广胜新型建材有限公司 | A kind of steam pressurized brick and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010146A (en) * | 2010-10-15 | 2011-04-13 | 中钢集团武汉安全环保研究院有限公司 | Method for modifying desulfuration ash for cement retarder |
| CN102674743A (en) * | 2012-06-06 | 2012-09-19 | 江苏名和集团有限公司 | Fly ash concrete carbon adsorption inhibitor and application thereof |
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2013
- 2013-10-29 CN CN201310519851.2A patent/CN103601384B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010146A (en) * | 2010-10-15 | 2011-04-13 | 中钢集团武汉安全环保研究院有限公司 | Method for modifying desulfuration ash for cement retarder |
| CN102674743A (en) * | 2012-06-06 | 2012-09-19 | 江苏名和集团有限公司 | Fly ash concrete carbon adsorption inhibitor and application thereof |
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| CN103601384A (en) | 2014-02-26 |
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