CN106269169B - A kind of agstone preparation method - Google Patents
A kind of agstone preparation method Download PDFInfo
- Publication number
- CN106269169B CN106269169B CN201610813991.4A CN201610813991A CN106269169B CN 106269169 B CN106269169 B CN 106269169B CN 201610813991 A CN201610813991 A CN 201610813991A CN 106269169 B CN106269169 B CN 106269169B
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- China
- Prior art keywords
- particle
- equal
- agstone
- dismembyator
- less
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/20—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/20—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating
- B02C23/22—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating with recirculation of material to crushing or disintegrating zone
Abstract
The invention discloses a kind of agstone preparation methods, 1) it is the following steps are included: grind raw limestone；2) agstone after grinding carries out first time sorting by waterfall stream winnowing machine A；3) it will be greater than 1000um particle and send dismembyator regrinding back to, 1000um particle will be less than or equal to and be sent into cyclone separator；4) 1000um particle will be less than or equal to and be transported to second of sorting of waterfall stream winnowing machine B progress；5) it stores 300~1000um particle and powder particles in 300um will be less than or equal to and be sent into progress third time sorting in powder concentrator；6) storage is less than or equal to 45um particle, and 45~300um particle is regrind.The particle that the present invention had not only met circulating fluidized bed boiler enters furnace requirement, but also is adjustable thick, fine powder ratio, by separating and recycling twice step by step so that lime stone preparation system control partial size, in terms of obtained great optimization.
Description
Technical field
The present invention relates to agstone preparation field more particularly to a kind of agstone preparation methods.
Background technique
Desulphurization system of circulating fluidized bed boiler is divided into desulfuration in furnace and the outer wet desulphurization of furnace.Want lift circular fluidizing boiler
Desulfuration in furnace efficiency, usually require that enter furnace particle diameter distribution meet following two requirement: one is less than 45um(microns) partial size
Superfine powder enter furnace ratio no more than 10%, two are desirable to charging powder partial size less than 1 millimeter.However, current recirculating fluidized bed
The furnace parameters that enter of boiler are difficult to meet requirements above, and the superfine powder furnace entering volume of especially less than 45um is far overproof, this is in furnace
Desulfurization brings adverse effect, and on the one hand this partial particulate is not utilized effectively, and reduces desulfuration efficiency, increases lime stone
Usage amount, on the other hand increase flying dust amount to auxiliary system and bring more unnecessary operation energy consumptions.Therefore, boiler factory
It is required that increasing 300~1000um particle enters furnace ratio.
Furnace foreign cigarette air humidity method desulfurized limestone powder is usually there are two types of source: 1. are directly ground using ball-type wet milk and are slurried；
2. being contemplated that and being directly lower than the slurrying of 45um superfine powder using what column mill+pneumatic separation system sub-elected.If can satisfy
Superfine powder demand, while in the case where desulfuration in furnace agstone preparation amount can be met again, it is better than first using the 2nd kind of scheme
Kind scheme.
In traditional agstone preparation system, Yao Zeng great 300~1000um particle enters furnace ratio, it is contemplated that increases
Column mill grinds gap, but if adjustment grinds gap increase its increase, coarse powder yield after necessarily superfine powder is produced
Amount is reduced, even more so that wet desulphurization demand cannot be met.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide the particles that one kind had both met circulating fluidized bed boiler
Enter furnace requirement, and can increase the agstone preparation method of ultra-fine powder yield.
The purpose of the present invention is achieved through the following technical solutions: a kind of agstone preparation method, it include with
Lower step:
1) dismembyator grinds raw limestone；
2) agstone after grinding carries out first time sorting by waterfall stream winnowing machine A, sub-elects greater than 1000um particle
Be less than or equal to 1000um particle；
3) it will be greater than 1000um particle and send dismembyator regrinding back to, 1000um particle will be less than or equal to and be sent into whirlwind point
From in device；
4) the 1000um particle that is less than or equal to for isolating cyclone separator is transported in another waterfall stream winnowing machine B
Second is carried out to sort；
5) the waterfall stream winnowing machine B 300~1000um particle sub-elected is put into finished product coarse powder bin, will be less than or equal to
Powder particles, which are sent into powder concentrator, in 300um carries out third time sorting；
6) the 45um particle that is less than or equal to that powder concentrator is selected is stored in finished product fine powder bin, and 45~300um particle is sent back to and is ground
Grinder is regrind.
Preferably, the dismembyator is column mill.
Preferably, surge bunker is arranged in the dismembyator front end, and lime stone is introduced into surge bunker and enters back into dismembyator.
Preferably, the agstone of dismembyator grinding is sent into waterfall stream winnowing machine A by bucket elevator A.
Preferably, the 1000um particle that is greater than sends dismembyator regrinding back to through returning charge scrapper conveyor.
Preferably, the agstone that the cyclone separator is isolated passes sequentially through chain-linked conveyer A, bucket elevator B is sent
Enter in waterfall stream winnowing machine B.
Preferably, the cyclone separator, chain-linked conveyer A and waterfall stream winnowing machine B are removed by bag filter A
Dirt.
Preferably, the powder concentrator is dusted by bag filter B.
Preferably, powder machine will be less than or equal to 45um particle by chain-linked conveyer C and be stored in finished product fine powder bin.
A kind of agstone application method of method preparation as described above: the agstone in finished product coarse powder bin is sent into furnace
Thorax participates in desulphurization during combustion or will carry out smoke-gas wet desulfurization after the agstone slurrying in finished product fine powder bin.
The beneficial effects of the present invention are: the present invention can guarantee after column mill grinds gap increase, 300~1000um
In the case that grain increases, 45um~300um grain sorting is come out and is re-grind, the production lower than 45um superfine powder is improved
Amount.By separating step by step (particle less than or equal to 1000um is first isolated, then isolates 300um~1000um particle, finally
From less than or equal to the particle isolated in 300um particle less than or equal to 45um) and recycle twice (recycling twice is respectively:
1. the 1000um particle that is greater than of waterfall stream winnowing machine A separation is ground again；2. being greater than of selecting of powder concentrator and is less than 45um
Or be transported in column mill equal to the particle of 300um and carry out secondary grinding), so that lime stone preparation system is controlling partial size, is dividing
Efficiency etc. is selected to obtain great optimization.300um~1000um particle of generation is sent into burner hearth and participates in desulfurization, while will be low
Smoke-gas wet desulfurization outside furnace is carried out after 45um particle slurrying, therefore, the useful particle that whole system generates increases, preparation method
It is more scientific.The present invention can adjust large or fine granule according to outer (smoke-gas wet desulfurization) the desulfurization demand of (boiler desulfurization) furnace in furnace
Yield ratio, method is reasonable, and the approval of associated specialist and manufacturer has been obtained in this method, and can bring considerable economy
Benefit.
Detailed description of the invention
Fig. 1 is the preparation system structural schematic diagram that agstone preparation method of the present invention uses.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing, but protection scope of the present invention is not limited to
It is as described below.
In conjunction with Fig. 1 to illustrate agstone preparation method, it the following steps are included:
1) dismembyator grinds raw limestone；
2) agstone after grinding is matched by waterfall stream winnowing machine A(waterfall stream winnowing machine A with sorting blower A) progress the
Primary sorting, sub-elect (should not participate in desulphurization reaction greater than 1000um particle, also referred to as be greater than 1000um greater than 1000um particle
Grain is unqualified powder) and it is less than or equal to 1000um particle (qualified powder)；
3) it will be greater than 1000um particle and send dismembyator regrinding back to, 1000um particle will be less than or equal to and be sent into whirlwind point
From in device；
4) the 1000um particle that is less than or equal to for isolating cyclone separator is transported to another waterfall stream winnowing machine B
Second is carried out in (waterfall stream winnowing machine B is matched with sorting blower B) to sort；
5) the waterfall stream winnowing machine B 300~1000um particle sub-elected is put into finished product coarse powder bin, will be less than or equal to
Powder particles (middle powder), which are sent into powder concentrator, in 300um carries out third time sorting；
6) be less than or equal to 45um particle (superfine powder) that powder concentrator is selected is stored in finished product fine powder bin, by 45~300um
Grain (middle fine powder) is sent dismembyator back to and is regrind.
Preferably, the dismembyator is column mill.
Preferably, surge bunker is arranged in the dismembyator front end, and lime stone is introduced into surge bunker and enters back into dismembyator.
Preferably, a kind of agstone preparation method according to claim 3, it is characterised in that: the grinding
The agstone of device grinding is sent into waterfall stream winnowing machine A by bucket elevator A.
Preferably, the 1000um particle that is greater than sends dismembyator regrinding back to through returning charge scrapper conveyor.
Preferably, the agstone that the cyclone separator is isolated passes sequentially through chain-linked conveyer A, bucket elevator B is sent
Enter in waterfall stream winnowing machine B.
Preferably, the cyclone separator, chain-linked conveyer A and waterfall stream winnowing machine B are removed by bag filter A
Dirt.
Preferably, the powder concentrator is dusted by bag filter B.
Preferably, powder machine will be less than or equal to 45um particle by chain-linked conveyer C and be stored in finished product fine powder bin.
A kind of agstone application method of method preparation as described above: the agstone in finished product coarse powder bin is sent into furnace
Thorax participates in desulphurization during combustion or will carry out smoke-gas wet desulfurization after the agstone slurrying in finished product fine powder bin.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is noted that all
Made any modifications, equivalent replacements, and improvements etc. within the spirit and principles in the present invention should be included in guarantor of the invention
Within the scope of shield.
Claims (7)
1. a kind of agstone preparation method, it is characterised in that: it the following steps are included:
1) dismembyator grinds raw limestone；
2) agstone after grinding carries out first time sorting by waterfall stream winnowing machine A, sub-elects greater than 1000um particle and small
In or equal to 1000um particle；
3) it will be greater than 1000um particle and send dismembyator regrinding back to, 1000um particle will be less than or equal to and be sent into cyclone separator
In；
4) the 1000um particle that is less than or equal to for isolating cyclone separator is transported in another waterfall stream winnowing machine B and carries out
Second of sorting；
5) the waterfall stream winnowing machine B 300~1000um particle sub-elected is put into finished product coarse powder bin, 300um will be less than or equal to
Middle powder particles, which are sent into powder concentrator, carries out third time sorting；
6) the 45um particle that is less than or equal to that powder concentrator is selected is stored in finished product fine powder bin, sends 45~300um particle back to dismembyator
It is regrind；
Surge bunker is arranged in the dismembyator front end, and lime stone is introduced into surge bunker and enters back into dismembyator；
The 1000um particle that is greater than sends dismembyator regrinding back to through returning charge scrapper conveyor.
2. a kind of agstone preparation method according to claim 1, it is characterised in that: the dismembyator is column mill
Machine.
3. a kind of agstone preparation method according to claim 1, it is characterised in that: the stone of the dismembyator grinding
Limestone flour is sent into waterfall stream winnowing machine A by bucket elevator A.
4. a kind of agstone preparation method according to claim 1, it is characterised in that: the cyclone separator separation
Agstone out passes sequentially through chain-linked conveyer A, bucket elevator B and is sent into waterfall stream winnowing machine B.
5. a kind of agstone preparation method according to claim 4, it is characterised in that: the cyclone separator, chain
Formula conveyer A and waterfall stream winnowing machine B are dusted by bag filter A.
6. a kind of agstone preparation method according to claim 1, it is characterised in that: the powder concentrator passes through cloth bag
Deduster B is dusted.
7. a kind of agstone preparation method according to claim 1, it is characterised in that: the powder concentrator passes through chain type
Conveyer C will be less than or equal in 45um particle deposit finished product fine powder bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610813991.4A CN106269169B (en) | 2016-09-09 | 2016-09-09 | A kind of agstone preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610813991.4A CN106269169B (en) | 2016-09-09 | 2016-09-09 | A kind of agstone preparation method |
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| Publication Number | Publication Date |
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| CN106269169A CN106269169A (en) | 2017-01-04 |
| CN106269169B true CN106269169B (en) | 2019-04-02 |
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| CN201610813991.4A Active CN106269169B (en) | 2016-09-09 | 2016-09-09 | A kind of agstone preparation method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694109B (en) * | 2017-01-16 | 2019-09-06 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of lime stone dry grinding flouring technology system |
| CN107051689A (en) * | 2017-01-16 | 2017-08-18 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of lime stone dry grinding prepares arrangement |
| CN107321485A (en) * | 2017-08-10 | 2017-11-07 | 青阳县永诚钙业有限责任公司 | A kind of method for separating of agstone |
| CN107522419B (en) * | 2017-08-15 | 2019-08-20 | 贵州涟江源建材有限公司 | A kind of agstone preparation facilities and preparation method thereof for concrete |
Citations (4)
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|---|---|---|---|---|
| CN2801282Y (en) * | 2005-06-16 | 2006-08-02 | 王东民 | Production system of coarse whiting ultrafine powder |
| CN201026458Y (en) * | 2007-03-21 | 2008-02-27 | 湖南省电力粉煤灰开发有限公司 | Novel system for manufacturing limestone powder |
| CN203695175U (en) * | 2014-01-06 | 2014-07-09 | 东莞市五全机械有限公司 | Full-automatic grinding and classifying production line for ultra-fine calcium carbonate powder |
| CN105107597A (en) * | 2015-08-28 | 2015-12-02 | 长沙深湘通用机器有限公司 | Coarse grain sorting method based on gas sorting machine and column mill |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3624307B2 (en) * | 1998-12-24 | 2005-03-02 | 太平洋エンジニアリング株式会社 | Crushing classification method and apparatus |
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2016
- 2016-09-09 CN CN201610813991.4A patent/CN106269169B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2801282Y (en) * | 2005-06-16 | 2006-08-02 | 王东民 | Production system of coarse whiting ultrafine powder |
| CN201026458Y (en) * | 2007-03-21 | 2008-02-27 | 湖南省电力粉煤灰开发有限公司 | Novel system for manufacturing limestone powder |
| CN203695175U (en) * | 2014-01-06 | 2014-07-09 | 东莞市五全机械有限公司 | Full-automatic grinding and classifying production line for ultra-fine calcium carbonate powder |
| CN105107597A (en) * | 2015-08-28 | 2015-12-02 | 长沙深湘通用机器有限公司 | Coarse grain sorting method based on gas sorting machine and column mill |
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| CN106269169A (en) | 2017-01-04 |
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