CN103265197A - Superfine fluidized bed combustion ash as well as preparation method and application thereof - Google Patents
Superfine fluidized bed combustion ash as well as preparation method and application thereof Download PDFInfo
- Publication number
- CN103265197A CN103265197A CN2013102156787A CN201310215678A CN103265197A CN 103265197 A CN103265197 A CN 103265197A CN 2013102156787 A CN2013102156787 A CN 2013102156787A CN 201310215678 A CN201310215678 A CN 201310215678A CN 103265197 A CN103265197 A CN 103265197A
- Authority
- CN
- China
- Prior art keywords
- ultra
- solid sulphur
- sulphur ash
- fine solid
- ash
- Prior art date
- 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.)
- Granted
Links
Landscapes
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses superfine fluidized bed combustion ash as well as a preparation method and an application thereof. The superfine fluidized bed combustion ash is characterized in that D50 is 0.5-15 microns, and D90 is less than or equal to 30 microns. According to the preparation method of the superfine fluidized bed combustion ash, steam kinetic grinding is carried out on the fluidized bed combustion ash; and due to conditions of the steam kinetic grinding, D50 of the obtained superfine fluidized bed combustion ash is 0.5-15 microns, and the D90 is less than or equal to 30 microns. The invention further provides an application of the superfine fluidized bed combustion ash as mineral admixtures. The superfine fluidized bed combustion prepared by utilizing the preparation method has the advantages of high activity and good self-hardening property.
Description
Technical field
The present invention relates to a kind of ultra-fine solid sulphur ash and its preparation method and application.
Background technology
Gu the sulphur ash is the refuse that coal-burning power plant's burning high-sulfur, low calorific value coal discharge.Gu not only have sal chainotte component in the sulphur ash, and contain a certain amount of free lime (f-CaO) and anhydrite, have characteristics such as pozzolanic activity, self-hardening property and swelling property, may cause the product swelling cracking if be directly used in building materials field.At present, Gu the tens million of tons of sulphur ash year generation how to store up, do not obtain the efficient resource utilization substantially, not only take a large amount of soils, and ecotope is caused tremendous influence.Gu the recycling of sulphur ash becomes the main factor of restriction circulating fluidized bed combustion coal technical development and popularization.How to utilize self-hardening property and the expansion characteristics production building material made of solid sulphur ash to become the current research focus.Existing report is studied solid sulphur ash composition, structure and characteristic, and with it as fields such as cement mixture, autoclaved bricks, but realize fully that all the mass-producing of solid sulphur ash and through engineering approaches use.
At present, common mineral admixture is slag and flyash.Solid sulphur ash is difficult to be applied in the mineral admixture owing to the swelling property problem that occurs in fineness deficiency own and the application process usually in the prior art.And at present for the grinding means of each component of mineral admixture still based on traditional ball milling, also utilize means such as Vertical Mill, but building material product grain graininess such as the powder granularity of producing and cement suitable, can not realize super-refinement.Therefore, Gu the sulphur ash fails to obtain rational development and utilization always.
Summary of the invention
The objective of the invention is to overcome in the prior art can not fine realization super-refinement defective, a kind of ultra-fine solid sulphur ash and its preparation method and application is provided.
For achieving the above object, the invention provides a kind of ultra-fine solid sulphur ash, the D50 of described ultra-fine solid sulphur ash is 0.5-15 μ m, D90≤30 μ m.
The present invention also provides a kind of preparation method of ultra-fine solid sulphur ash, and this method comprises: will consolidate the sulphur ash and carry out the grinding of steam kinetic energy, it is 0.5-15 μ m that the condition that steam kinetic energy grinds makes the D50 of the ultra-fine solid sulphur ash that obtains, D90≤30 μ m.
The present invention also provides according to the prepared ultra-fine solid sulphur ash of above-mentioned preparation method.
The present invention also provides the application of above-mentioned ultra-fine solid sulphur ash as mineral admixture.
The prepared ultra-fine solid sulphur ash of method of the present invention has the active high and good advantage of self-hardening property, and can well be applied in the mineral admixture.
Other features and advantages of the present invention will partly be described in detail in embodiment subsequently.
Embodiment
Below the specific embodiment of the present invention is elaborated.Should be understood that embodiment described herein only is used for description and interpretation the present invention, is not limited to the present invention.
The invention provides a kind of ultra-fine solid sulphur ash, the D50 of described ultra-fine solid sulphur ash is 0.5-15 μ m, D90≤30 μ m.
D50 and D90 represent that respectively the cumulative particle sizes percentile of sample reaches 50% and 90% o'clock corresponding maximum particle diameter.
Ultra-fine solid sulphur ash provided by the invention, only needing the D50 of described ultra-fine solid sulphur ash is 0.5-15 μ m, D90≤30 μ m, can realize goal of the invention, under the preferable case, the D50 of described ultra-fine solid sulphur ash is 2-10 μ m, D90 is 5-14.5 μ m, more preferably under the situation, the D50 of described ultra-fine solid sulphur ash is 2-7 μ m, and D90 is 5-14 μ m.
Especially, the contriver finds that the specific surface area of ultra-fine solid sulphur ash provided by the invention is 450-1500m
2/ kg.Further preferred, the specific surface area of described ultra-fine solid sulphur ash is 1000-1500m
2/ kg, then performance can be more superior.
Especially, the contriver finds 28d activity index 〉=75% of ultra-fine solid sulphur ash provided by the invention.Further preferred, the 28d activity index of described ultra-fine solid sulphur ash is 85-98%, and then over-all properties can be more superior.Wherein, about the 28d activity index, with reference to definition and the testing method among the GB/T18046-2008 " GBFS that is used for cement and concrete ".
Especially, the contriver finds that the 28d self-hardening property ultimate compression strength of ultra-fine solid sulphur ash provided by the invention is 7-15Mpa.Further preferred, the 28d self-hardening property ultimate compression strength of described ultra-fine solid sulphur ash is 9-13Mpa, and then over-all properties can be more superior.Wherein, the testing method of 28d self-hardening property ultimate compression strength is: get the ultra-fine solid sulphur ash of about 500g by the method for GB1346-2001, die trial moulding with 20mm * 20mm * 20mm, take out the demoulding behind moulding 24 ± 2h, put into temperature and be 20 ± 3 ℃, relative humidity greater than 90% maintaining box maintenance, when treating maintenance to 28 day, carry out compressive strength test.The testing method of 28d self-hardening property ultimate compression strength is the same among the embodiment.
The present invention also provides a kind of preparation method of ultra-fine solid sulphur ash, and this method comprises: will consolidate the sulphur ash and carry out the grinding of steam kinetic energy, it is 0.5-15 μ m that the condition that steam kinetic energy grinds makes the D50 of the ultra-fine solid sulphur ash that obtains, D90≤30 μ m.Under the preferable case, the D50 of described ultra-fine solid sulphur ash is 2-10 μ m, and D90 is 5-14.5 μ m, and more preferably under the situation, the D50 of described ultra-fine solid sulphur ash is 2-7 μ m, and D90 is 5-14 μ m.
According to preparation method provided by the invention, described solid sulphur ash can adopt this area solid sulphur ash commonly used, under the preferable case, and the solid sulphur ash that described solid sulphur ash discharges for circular fluid bed coal-burning power plant burning high-sulfur, low calorific value coal.Contain CaO1-21 weight %, SO in the described solid sulphur ash
31-13 weight %, f-CaO(free CaO) 0.1-5.7 weight %, SiO
225-52 weight %, Al
2O
311-35 weight %, Fe
2O
33-14 weight %.Usually, the D50 of described solid sulphur ash is 20-50 μ m, and D90 is 60-90 μ m.
According to preparation method provided by the invention, described steam kinetic energy grinds and refers to the superheated vapour is power and powder grinding medium, superheated vapour is accelerated to spray into crushing chamber, make superheated vapour drive coarse particles collision friction repeatedly in the crushing chamber, classified machine is selected the fine particle of appropriate particle size and the technology of collecting then.Among the present invention, only to make the D50 of the ultra-fine solid sulphur ash that obtains be 0.5-15 μ m to the condition that needs steam kinetic energy to grind, D90≤30 μ m can realize goal of the invention, described steam kinetic energy grinds required condition and comprises: vapor temperature is 220-350 ℃, vapor pressure is 0.3-1.2MPa, and the grading machine frequency is 1-60Hz.For the ultra-fine solid sulphur ash performance that makes preparation better, and reach the mutual coupling of energy consumption and output simultaneously, further preferred, the condition that described steam kinetic energy grinds comprises: vapor temperature is 230-280 ℃, vapor pressure is 0.3-0.6MPa, and the grading machine frequency is 18-35Hz.
Especially, to make the specific surface area of the ultra-fine solid sulphur ash that obtains be 450-1500m to the described steam kinetic energy condition of grinding
2During/kg, the product over-all properties can be more superior.
Especially, the condition that described steam kinetic energy grinds makes 28d activity index 〉=75% o'clock of the ultra-fine solid sulphur ash that obtains, and the product over-all properties can be more superior.
Especially, when the condition that described steam kinetic energy grinds made the 28d self-hardening property ultimate compression strength that obtains be 7-15Mpa, the product over-all properties can be more superior.
The present invention also provides the prepared ultra-fine solid sulphur ash according to above-mentioned preparation method.
The present invention also provides the application of above-mentioned ultra-fine solid sulphur ash as mineral admixture.Ultra-fine solid sulphur ash provided by the invention is in application process, and is active higher on the one hand, can bring into play fine particle and fill pile up effect, on the other hand, can accelerate wherein swelling property component aquation, and its swelling property was improved in the plastic stage.
Below will describe the present invention by embodiment.
In following examples and the application examples, the solid sulphur ash of raw material is from Sichuan Baima Circulating Fluidized Bed Demonstration Power Plant Co., Ltd., and D50 is 22.873 μ m, and D90 is 74.205 μ m;
I level flyash D50 is 17.947 μ m, and D90 is 47.942 μ m; S75 grade slag powder D50 is 11.846 μ m, and D90 is 37.663 μ m;
Steam kinetic energy grinds and adopts the makers' LNJ-2000 superheated vapour of Mianyang stream energy fluid machinery disintegrating apparatus;
The Mastersizer2000 type laser particle size analyzer of Britain Ma Erwen company is adopted in particle size measurement;
Specific surface area is tested according to GB/T8074-2008 " Method of determination for specific surface of cement-Bo Shi method ";
The testing method of 28d activity index is with reference to GB/T18046-2008 " GBFS that is used for cement and concrete ";
28d self-hardening property intensity test adopts Shenzhen newly to think carefully the CMT5105 of Materials Co., Ltd microcomputer control electronics universal testing machine.
Embodiment 1
Present embodiment is used for the preparation method of explanation ultra-fine solid sulphur ash provided by the invention.
The solid sulphur ash of raw material is carried out steam kinetic energy grind, the condition of adjusting the grinding of steam kinetic energy is 260 ℃ of vapor temperatures, and vapor pressure is 0.5MPa, and the grading machine frequency is 35Hz.The D50 that makes ultra-fine solid sulphur ash is 2.647 μ m, and D90 is 5.173 μ m, and specific surface area is 1500m
2/ kg, the 28d activity index is that 97.6%, 28d self-hardening property ultimate compression strength is 12.1Mpa.
Embodiment 2
Present embodiment is used for the preparation method of explanation ultra-fine solid sulphur ash provided by the invention.
The solid sulphur ash of raw material is carried out steam kinetic energy grind, the condition of adjusting the grinding of steam kinetic energy is 280 ℃ of vapor temperatures, and vapor pressure is 0.6MPa, and the grading machine frequency is 25Hz.The D50 that makes ultra-fine solid sulphur ash is 4.134 μ m, and D90 is 10.158 μ m, and specific surface area is 1123m
2/ kg, the 28d activity index is that 95%, 28d self-hardening property ultimate compression strength is 11.3Mpa.
Embodiment 3
Present embodiment is used for the preparation method of explanation ultra-fine solid sulphur ash provided by the invention.
The solid sulphur ash of raw material is carried out steam kinetic energy grind, the condition of adjusting the grinding of steam kinetic energy is 230 ℃ of vapor temperatures, and vapor pressure is 0.3MPa, and the grading machine frequency is 18Hz.The D50 that makes ultra-fine solid sulphur ash is 6.170 μ m, and D90 is 13.586 μ m, and specific surface area is 1014m
2/ kg, the 28d activity index is that 85%, 28d self-hardening property ultimate compression strength is 9.5Mpa.
Embodiment 4
Present embodiment is used for the preparation method of explanation ultra-fine solid sulphur ash provided by the invention.
The solid sulphur ash of raw material is carried out steam kinetic energy grind, the condition of adjusting the grinding of steam kinetic energy is 350 ℃ of vapor temperatures, and vapor pressure is 1.2MPa, and the grading machine frequency is 5Hz.The D50 that makes ultra-fine solid sulphur ash is 9.185 μ m, and D90 is 14.251 μ m, and specific surface area is 878m
2/ kg, the 28d activity index is that 80.1%, 28d self-hardening property ultimate compression strength is 7.7Mpa.
Application examples 1
Should be used for explanation ultra-fine solid sulphur ash of the present invention as the application of mineral admixture by use-case.
The ultra-fine solid sulphur ash that embodiment 2 is made mixes with flyash, slag powders, contains ultra-fine solid sulphur ash 70 weight % in the mineral admixture of the feasible preparation of the consumption of each component, flyash 20 weight %, slag powders 10 weight %.Obtain mineral admixture thus, the 28d activity index is that 91%, 28d self-hardening property ultimate compression strength is 10.2Mpa.
Use Comparative Examples 1
As mineral admixture, its 28d activity index is that 62%, 28d self-hardening property ultimate compression strength is 6Mpa with flyash.
Use Comparative Examples 2
Flyash and slag powders (weight ratio is 1:1) are mixed as mineral admixture, and its 28d activity index is that 70%, 28d self-hardening property ultimate compression strength is 6.5Mpa.
More than describe preferred implementation of the present invention in detail; but the present invention is not limited to the detail in the above-mentioned embodiment, in technical conceive scope of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Need to prove in addition, each concrete technical characterictic described in above-mentioned embodiment under reconcilable situation, can make up by any suitable manner, for fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible array modes.
In addition, also can carry out arbitrary combination between the various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (9)
1. a ultra-fine solid sulphur ash is characterized in that the D50 of described ultra-fine solid sulphur ash is 0.5-15 μ m, D90≤30 μ m.
2. ultra-fine solid sulphur ash according to claim 1, wherein, the specific surface area of described ultra-fine solid sulphur ash is 450-1500m
2/ kg.
3. ultra-fine solid sulphur ash according to claim 1 and 2, wherein, 28d activity index 〉=75% of described ultra-fine solid sulphur ash, 28d self-hardening property ultimate compression strength is 7-15Mpa.
4. the preparation method of a ultra-fine solid sulphur ash is characterized in that this method comprises: will consolidate the sulphur ash and carry out steam kinetic energy and grind, it is 0.5-15 μ m that the condition that steam kinetic energy grinds makes the D50 of the ultra-fine solid sulphur ash that obtains, D90≤30 μ m.
5. preparation method according to claim 4, wherein, the condition that described steam kinetic energy grinds comprises: vapor temperature is 220-350 ℃, and vapor pressure is 0.3-1.2MPa, and the grading machine frequency is 1-60Hz; Preferably, vapor temperature is 230-280 ℃, and vapor pressure is 0.3-0.6MPa, and the grading machine frequency is 18-35Hz.
6. according to claim 4 or 5 described preparation methods, wherein, it is 450-1500m that the condition that steam kinetic energy grinds makes the specific surface area of the ultra-fine solid sulphur ash that obtains
2/ kg.
7. according to claim 4 or 5 described preparation methods, wherein, the condition that steam kinetic energy grinds makes 28d activity index 〉=75% of the ultra-fine solid sulphur ash that obtains, and 28d self-hardening property ultimate compression strength is 7-15Mpa.
8. according to the prepared ultra-fine solid sulphur ash of any described preparation method among the claim 4-7.
9. a ultra-fine solid sulphur ash is characterized in that as the application of mineral admixture described ultra-fine solid sulphur ash is for any described ultra-fine solid sulphur ash among the claim 1-3 and 8 or according to any prepared obtaining of described preparation method among the claim 4-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310215678.7A CN103265197B (en) | 2013-05-31 | 2013-05-31 | Ultra-fine solid sulfur ash and its preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310215678.7A CN103265197B (en) | 2013-05-31 | 2013-05-31 | Ultra-fine solid sulfur ash and its preparation method and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103265197A true CN103265197A (en) | 2013-08-28 |
| CN103265197B CN103265197B (en) | 2016-03-23 |
Family
ID=49008876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310215678.7A Active CN103265197B (en) | 2013-05-31 | 2013-05-31 | Ultra-fine solid sulfur ash and its preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103265197B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108585694A (en) * | 2018-06-22 | 2018-09-28 | 山西平朔煤矸石发电有限责任公司 | A kind of solid sulfur ash dry-mixed mortar and preparation method thereof |
| CN109796141A (en) * | 2019-03-18 | 2019-05-24 | 华电国际电力股份有限公司朔州热电分公司 | A kind of solid sulfur ash geo-polymer and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617058A (en) * | 2012-03-20 | 2012-08-01 | 西南科技大学 | Method for preparing hydraulic cementing material by utilizing sulfur fixation ash |
-
2013
- 2013-05-31 CN CN201310215678.7A patent/CN103265197B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617058A (en) * | 2012-03-20 | 2012-08-01 | 西南科技大学 | Method for preparing hydraulic cementing material by utilizing sulfur fixation ash |
Non-Patent Citations (3)
| Title |
|---|
| 纪宪坤等: "流化床（FBC）燃煤固硫灰渣研究综述", 《粉煤灰》 * |
| 范晓玲: "固硫灰特性及其在水泥基自流平砂浆中的应用研究", 《西南科技大学硕士学位论文》 * |
| 霍琳等: "粉磨超细化对循环流化床固硫灰水化特性的影响", 《武汉理工大学学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108585694A (en) * | 2018-06-22 | 2018-09-28 | 山西平朔煤矸石发电有限责任公司 | A kind of solid sulfur ash dry-mixed mortar and preparation method thereof |
| CN109796141A (en) * | 2019-03-18 | 2019-05-24 | 华电国际电力股份有限公司朔州热电分公司 | A kind of solid sulfur ash geo-polymer and preparation method thereof |
| CN109796141B (en) * | 2019-03-18 | 2021-11-23 | 华电国际电力股份有限公司朔州热电分公司 | Sulfur-fixing ash geopolymer and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103265197B (en) | 2016-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103265196A (en) | Mineral admixture as well as preparation method and application thereof | |
| CN103588451B (en) | A kind of phosphorus slag-phosphorus tailing foam concrete building block and preparation method thereof | |
| CN108640635B (en) | Coal cinder powder magnesium oxysulfate cement stable recycled concrete aggregate and preparation method thereof | |
| CN103626471A (en) | Steam-cured brick produced by use of phosphate tailing and phosphorus slag and preparation method thereof | |
| US20220396526A1 (en) | Compositions comprising a mechanochemically carboxylated mineral filler and a cement and/or asphalt binder | |
| JP2015514662A (en) | Method for producing auxiliary cementitious materials (SCMs) | |
| CN107522501B (en) | Aerated concrete and preparation method thereof | |
| CN105174765A (en) | Method for preparing construction sand and active slag powder through water-quenched vanadium-titanium slag | |
| CN114292081B (en) | Cement-free low-carbon concrete and preparation method thereof | |
| CA3159579A1 (en) | A mechanically carboxylated fly ash, methods of its production and uses thereof | |
| Krishnaraj et al. | Impact of chloride grinding aid with modified fly ash using topdown nanotechnology on grinding performance | |
| He et al. | Compressive strengths of concrete containing rice husk ash without processing | |
| CN103265197B (en) | Ultra-fine solid sulfur ash and its preparation method and application | |
| CN103304207A (en) | Semidry sintered desulfurized fly ash masonry dry powder and manufacturing method thereof | |
| CN104671720B (en) | Use road filling of building waste and gangue manufacture and preparation method thereof | |
| CN103964717A (en) | Iron tailings activity improvement method, prepared iron tailings and application | |
| CN106587675B (en) | A kind of high activity nickel slag base cement mixture and preparation method thereof | |
| Wang et al. | Single-factor analysis and interaction terms on the mechanical and microscopic properties of cemented aeolian sand backfill | |
| CN115772013B (en) | Concrete containing silt powder and solid carbide slag | |
| KR20120025937A (en) | The method for recycling fly ash containing a large quantity of cao | |
| KR101536416B1 (en) | Additive for concrete comprising bottom ash and the method for preparing thereof | |
| Zhao et al. | The hydration properties of blended cement containing ultrafine fly ash with particle size less than 17 μm from the circulating fluidized bed combustion of coal gangue | |
| CN110563405A (en) | Novel environment-friendly admixture concrete and preparation process thereof | |
| CN106277970A (en) | A kind of hot-forming slag building waste sheet material | |
| KR101794013B1 (en) | Grinded fly ash and cement mortar using thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |