CN103056013A - Physical counter lubrication technical method for improving milling efficiency of coal mill - Google Patents
Physical counter lubrication technical method for improving milling efficiency of coal mill Download PDFInfo
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- CN103056013A CN103056013A CN2011103221498A CN201110322149A CN103056013A CN 103056013 A CN103056013 A CN 103056013A CN 2011103221498 A CN2011103221498 A CN 2011103221498A CN 201110322149 A CN201110322149 A CN 201110322149A CN 103056013 A CN103056013 A CN 103056013A
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- coal
- abrasive body
- grinding
- milling efficiency
- physics
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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
Abstract
The invention relates to a physical counter lubrication technical method for improving milling efficiency of coal mill, and belongs to a novel coal milling assistant material and a physical counter lubrication production improving novel technology of crushing milling of thermal power plant, cement plant and other fields using pulverized coal. With the adoption of the technical method, the existing chemical milling assistant method is changed, the blank of the technology of physical method milling assistant material for improving coal milling efficiency at home and abroad is filled; the technical method is low in technology investment and high in yield; A and B parts of the scheme can be implemented synchronously and also can be implemented separately without interfering each other and affecting the effect showing; and the energy-saving and energy consumption reducing effects are significant, immediate and detectable.
Description
Technical field
The present invention relates to a kind of anti-lubrication technology method of physics that improves the coal pulverizer milling efficiency, is by changing the abrasive body surface topography, increase coefficient of friction, increase the abrasive body surface area, improving the method for coal pulverizer milling efficiency.The invention belongs to steam power plant, cement plant and other anti-lubricated product new technology of putting forward of physics of using the New type coal mill grinding aid material of coal dust industry and pulverizing grinding.
Background technology
Existing coal pulverizer, pulverize in grinding technique practice and the technical know-how data, chemical grinding aid material is only arranged, because this grinding aid material price is expensive, the coal-grinding cost is improved, and be not used widely.Up to now, can not find and be specifically designed to coal-grinding, physical method improves pulverizes grinding efficiency, low-cost grinding aid material; Do not pulverize the precedent that grinding efficiency changes the abrasive body surface topography, increases the anti-lubrication technology theory and practice of physics of abrasive body coefficient of friction, increase abrasive body and material contact area for improving coal-grinding yet.
Summary of the invention
The object of the present invention is to provide a kind of anti-lubrication technology method of physics that improves the coal pulverizer milling efficiency, with tribology, interface, mathematics, mechanics and physical basic theory as analyzing used scientific theory instrument, utilize the anti-lubricating method of physical surface energy absorption knowledge, tribology, utilize the materials such as flyash, the characteristics that coefficient of friction is larger than coal are as coal-grinding grinding aid material; Change the abrasive body surface topography, increase and enlarge the frictional force of abrasive body and coal, increase the contact area of itself and coal; Improve coal pulverizer and pulverize grinding effect, improve the output in the unit interval, thereby reduce the per unit area yield energy consumption of coal pulverizer powder process, solved the existing defective of prior art.
To achieve these goals, the present invention is by the following technical solutions:
The technology of the present invention comprises two schemes:
A, utilize coefficient of friction greater than coal and material cheap and easy to get, add material as the grinding aid of coal dust processed;
The surface topography of B, the existing general abrasive body of change increases abrasive body and contacts milling area with frictional force and the reality of grinding material.
The grinding aid that described option A relates to is added material and is comprised:
1. flyash, cinder;
2. metallurgy high furnace slag, ash;
3. sand grains, the stone flour made of various slags, ash, powder and various rock;
4. river sand;
5. cement slurry, grog and goods thereof;
6. the mixture of above-mentioned any two or more material.
When this scheme selected grinding aid to add material, with flyash, the slag of thermal power plant boiler or the generation of other plain cylindrical furnace, or ash, slag that metallurgy high furnace produces were best.This is refuse reclamation, and material cost is extremely low, consumption 0.1-10%.According to the grinding aid actual effect with not affect coal dust firing be that principle is determined addition.
The change of the abrasive body surface topography that described option b relates to comprises:
1. with physical method the abrasive body surface roughness is increased;
2. have a mind to make abrasive body friction surface pattern cloudy groove, cloudy point, hole, hole or positive bar, positive salient point, positive post, positive tooth to occur with the method that manufactures and designs;
3. have a mind to make the abrasive body surface very coarse injustice that becomes rough with the method for chemical attack;
4. above two or more method is mixed, and causes rule or the irregular change of abrasive body surface topography.
When this scheme changes abrasive body surface topography, above-mentioned 1., 2., 3., 4. method all can adopt.With method 2. for the most thorough.Low speed coal mill is the method for available change steel ball size grating also, big steel ball is reduced 20-60% weight by grating, use the small ball of suitable weight instead, increasing the abrasive body surface area, when increasing the abrasive body motion mode of frictional force and itself and grinding material contact area replace 1., 2., 3., method 4. reaches the volume increase purpose.
Described option A, B two parts can be implemented simultaneously, also can distinguish separately and implement; Effect of increasing production, good to be embodied as simultaneously.Option A, B two parts not only are used for the low speed low speed coal mill, and can be used for medium-speed pulverizer, and especially material is added in the coal-grinding grinding aid that relates to of option A, and basic, normal, high speed coal mill all can use.
Beneficial effect of the present invention:
Advantage of the present invention is the anti-lubricated grinding aid technology of physics, has changed the method for existing chemical grinding aid, has filled up the technological gap that is used for the physical method grinding aid material of coal-grinding synergy both at home and abroad, the enforcement of its technology, the high production of low input.Option A, B two parts can be implemented simultaneously, also can distinguish separately and to implement, and do not involve mutually to disturb and the manifesting of impact effect, and energy conservation and consumption reduction effects is remarkable, and vertical rod sees that shadow can consider.
The present invention, congener water content is identical with batch coal with the place of production, under the identical prerequisite of mill feed size, same coal pulverizer, pulverizing and lapping mode are constant, and the abrasive body carrying capacity is constant, the pulverizing milling time is identical, and requiring of fineness quality is constant, and milling efficiency changes as follows:
1, the above-mentioned technology A of the present invention, B two parts are implemented simultaneously, output increased 30-60%;
2, implement separately such scheme A of the present invention, output increased 15-30%;
3, implement separately such scheme B of the present invention, output increased 15-30%.
The specific embodiment
Example 1
Step 1, enforcement the present invention program B, the former abrasive body carrying capacity of grinding machine and grating are constant; Only change the abrasive body surface topography, make it become very coarse or surperficial and become uneven;
Step 2, implement the present invention program A, by weight 1.5% with flyash, the perhaps mixture of flyash and cinder adds to advance in the raw coal before the mill, allows it enter the stirring that participates in coal in the grinding machine with coal and pulverizes and grinding on the mill feeding conveyer belt.
Example 2
Implement separately the present invention program A, on the mill feeding conveyer belt, by weight 1%, cement flour and clinker mixture are added in the raw coal before the grinding machine, allow it enter in the grinding machine with coal.
Example 3
Implement separately the present invention program B, grinding machine abrasive body carrying capacity and grating are constant, and become the abrasive body surface topography very coarse or on the abrasive body surface formation rule or irregular hollow, outstanding shape is perhaps arranged.
Example 4
Step 1, enforcement the present invention program B, grinding machine abrasive body dead weight capacity is constant.Cut 50% by former grating, with equivalent weight, than the also little level of the medium and small abrasive body of former grating other, little abrasive body replaces 50% big steel ball that cuts in the dead weight capacity;
Step 2, implement the present invention program A, on the mill feeding conveyer belt, by weight 2.5%, the arbitrary proportion mixture of clinker and cement slurry is added in the raw coal before the mill, allow it enter in the grinding machine with coal.
Example 5
Implement separately the present invention program A, on the mill feeding conveyer belt, by weight 4% metallurgy high furnace ash, slag and flyash, slag arbitrary proportion mixture are added in the raw coal, allow it enter in the grinding machine with coal.
Example 6
Step 1, enforcement the present invention program B, it is constant that grinding machine carries the abrasive body total amount.Wherein 50% large abrasive body changes its surface topography; Other 50% changes into and has changed surface topography, than also little other the little abrasive body of a level of the medium and small abrasive body of former grating;
Step 2, implement the present invention program A, on the mill feeding conveyer belt, by weight 3%, flyash is mixed with mountain sand grains, powder arbitrary proportion in the raw coal before grinding machine is advanced in adding, allow it enter in the grinding machine with coal.
Example 7
Step 1, enforcement the present invention program B, grinding machine abrasive body dead weight capacity is constant.Reduce by 50% gross weight by simple proportioning example, change into than also little other the little abrasive body of a level of the medium and small abrasive body of former grating;
Step 2, enforcement the present invention program A by weight 3%, with flyash and dry river sand arbitrary proportion mixture, add to advance in the front raw coal of grinding machine on the mill feeding conveyer belt, allow it enter in the grinding machine with coal.
Claims (5)
1. anti-lubrication technology method of physics that improves the coal pulverizer milling efficiency, it is characterized in that: scheme comprises two parts, A, utilizes coefficient of friction greater than coal and material cheap and easy to get, adds material as the grinding aid of coal dust processed; The surface topography of B, the existing general abrasive body of change increases abrasive body and contacts milling area with frictional force and the reality of grinding material.
2. described a kind of anti-lubrication technology method of physics that improves the coal pulverizer milling efficiency according to claim 1, it is characterized in that: the grinding aid that option A relates to is added material and is comprised:
1. flyash, cinder;
2. metallurgy high furnace slag, ash;
3. sand grains, the stone flour made of various slags, ash, powder and various rock;
4. river sand;
5. cement slurry, grog and goods thereof;
6. the mixture of above-mentioned any two or more material.
3. described a kind of anti-lubrication technology method of physics that improves the coal pulverizer milling efficiency according to claim 1, it is characterized in that: the change of the abrasive body surface topography that option b relates to comprises:
1. with physical method the abrasive body surface roughness is increased;
2. have a mind to make abrasive body friction surface pattern cloudy groove, cloudy point, hole, hole or positive bar, positive salient point, positive post, positive tooth to occur with the method that manufactures and designs;
3. have a mind to make the abrasive body surface very coarse injustice that becomes rough with the method for chemical attack.
4. described a kind of anti-lubrication technology method of physics that improves the coal pulverizer milling efficiency according to claim 1, it is characterized in that: option A, B two parts can be implemented simultaneously, also can distinguish separately and implement.
5. described a kind of anti-lubrication technology method of physics that improves the coal pulverizer milling efficiency according to claim 1, it is characterized in that: option A, B two parts, not only be used for the low speed low speed coal mill, and can be used for medium-speed pulverizer, especially material is added in the coal-grinding grinding aid that relates to of option A, and basic, normal, high speed coal mill all can use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110322149.8A CN103056013B (en) | 2011-10-21 | 2011-10-21 | Physical counter lubrication technical method for improving milling efficiency of coal mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110322149.8A CN103056013B (en) | 2011-10-21 | 2011-10-21 | Physical counter lubrication technical method for improving milling efficiency of coal mill |
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| Publication Number | Publication Date |
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| CN103056013A true CN103056013A (en) | 2013-04-24 |
| CN103056013B CN103056013B (en) | 2015-03-25 |
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| CN201110322149.8A Expired - Fee Related CN103056013B (en) | 2011-10-21 | 2011-10-21 | Physical counter lubrication technical method for improving milling efficiency of coal mill |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB261664A (en) * | 1926-08-04 | 1926-11-25 | Otto Kordt | Improvements in grinding bodies for ball-, drum- and tubular mills |
| GB284580A (en) * | 1927-12-12 | 1928-02-02 | Otto Kordt | Improvements in hollow grinding bodies for ball-, drum- and tubular mills |
| CN2040426U (en) * | 1988-05-21 | 1989-07-05 | 吴绵魁 | High efficient grinding material |
| JPH1043624A (en) * | 1996-08-08 | 1998-02-17 | Ishikawajima Harima Heavy Ind Co Ltd | Mill warming apparatus |
| KR100602316B1 (en) * | 2001-03-23 | 2006-07-14 | 다이호고교가부시키가이샤 | Fuel additive for preventing slagging and method for burning fuel |
| CN101270311A (en) * | 2007-03-23 | 2008-09-24 | 卢英进 | Grinding burning-rate accelerator for coal, preparation method and application thereof |
| CN101386802A (en) * | 2007-09-11 | 2009-03-18 | 吴美惠 | Additive composition for fuel |
| CN101918142A (en) * | 2008-12-09 | 2010-12-15 | 株式会社大凤工材 | Pulverization assistant for coal and use thereof |
-
2011
- 2011-10-21 CN CN201110322149.8A patent/CN103056013B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB261664A (en) * | 1926-08-04 | 1926-11-25 | Otto Kordt | Improvements in grinding bodies for ball-, drum- and tubular mills |
| GB284580A (en) * | 1927-12-12 | 1928-02-02 | Otto Kordt | Improvements in hollow grinding bodies for ball-, drum- and tubular mills |
| CN2040426U (en) * | 1988-05-21 | 1989-07-05 | 吴绵魁 | High efficient grinding material |
| JPH1043624A (en) * | 1996-08-08 | 1998-02-17 | Ishikawajima Harima Heavy Ind Co Ltd | Mill warming apparatus |
| KR100602316B1 (en) * | 2001-03-23 | 2006-07-14 | 다이호고교가부시키가이샤 | Fuel additive for preventing slagging and method for burning fuel |
| CN101270311A (en) * | 2007-03-23 | 2008-09-24 | 卢英进 | Grinding burning-rate accelerator for coal, preparation method and application thereof |
| CN101386802A (en) * | 2007-09-11 | 2009-03-18 | 吴美惠 | Additive composition for fuel |
| CN101918142A (en) * | 2008-12-09 | 2010-12-15 | 株式会社大凤工材 | Pulverization assistant for coal and use thereof |
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| CN103056013B (en) | 2015-03-25 |
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Granted publication date: 20150325 Termination date: 20181021 |