CN202621231U - Open-circuit tube mill for coal ash micro powder - Google Patents
Open-circuit tube mill for coal ash micro powder Download PDFInfo
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- CN202621231U CN202621231U CN 201220049483 CN201220049483U CN202621231U CN 202621231 U CN202621231 U CN 202621231U CN 201220049483 CN201220049483 CN 201220049483 CN 201220049483 U CN201220049483 U CN 201220049483U CN 202621231 U CN202621231 U CN 202621231U
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- grinding
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- fine grinding
- tube mill
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Abstract
The utility model discloses an open-circuit tube mill for coal ash micro powder. The open-circuit tube mill comprises a machine frame, wherein a mill cylinder body is arranged on the machine frame; a feeding device and a discharge device are arranged at left and right ends of the mill cylinder body respectively; a bin partition device is arranged in the mill cylinder body and divides the mill cylinder body into a coarse grinding bin on the left side and a fine grinding bin on the right side; a coarse grinding bin grinding body is placed in the coarse grinding bin, and a fine grinding bin grinding body is placed in the fine grinding bin; the fine grinding bin grinding body is a miniature steel section, and the diameter of the miniature steel section is 10 to 16 millimeters; and the coarse grinding bin grinding body is a medium and large-size steel section, and the diameter of the medium and large-size steel section is 18 to 25 millimeters. According to the open-circuit tube mill, a structure inside the ordinary tube mill is re-designed, so that the tube mill for the coal ash micro powder can grind coal ash effectively according to the grinding characteristic of the coal ash; and the coal ash is distributed reasonably in the mill according to the fineness of the coal ash, so that the aims of improving the grinding efficiency of the mill and the yield, reducing grinding power consumption and ensuring the quality of products are fulfilled.
Description
Technical field:
The utility model relates generally to a kind of milling equipment, relates in particular to a kind of stream flyash micro mist tube mill of opening.
Background technology:
Flyash is that the coal-fired powder boiler in thermal power plant is discharged " waste residue ".China's power industry is main with fire coal, and national annual flyash discharge capacity surpasses 200,000,000 tons, and accumulative total is stored up 1,500,000,000 tons, takes up an area of 50,000 hectares.Along with development of electric power industry, its discharge rate also will increase year by year.As not in addition fine utilization, the farmland be will take, rivers, contaminated environment stopped up.
Closely during the last ten years, the comprehensive utilization to flyash has been used as a large amount of research both at home and abroad, after discovery flyash mixes concrete; Not only can replace part cement; Reduce concrete cost, the protection environment, and can be complementary short long with cement; Improve concrete a series of performance, as improve concrete later strength, improve fresh concrete workability, improve concrete durability.Therefore flyash concrete has tangible technical economic benefit, so the application of flyash in concrete is increasingly extensive, becomes requisite the 5th component in the concrete gradually.
In order to promote the development and use of flyash, guarantee construction quality, China has formulated " GB1596-2005 is used for cement and concrete flyash " standard.At present, the main method of domestic acquisition grade ash has: 1. powder concentrator sorting: the former ash of flyash (generally than showing about 200～240 ㎡/㎏) is carried out sorting, and the fineness of the fine powdered coal that sub-elects reaches the requirement of grade ash; 2. grinding: flyash (former ash or through the cinder after the sorting) behind the flour mill grinding, is reached the fineness requirement of grade ash.Separating method only screens fine powder, can not get utilizing preferably and account for a large amount of cinders of total amount more than 50%, produces for the second time and pollutes.Therefore the grinding method is the basic method that makes full use of fly ash, eliminates environmental pollution.
Commonly open that stream flyash tube mill efficient is low, power consumption is high, more than the production I level ash power consumption 25Kwh/t, more than the production II level ash power consumption 19Kwh/t.Main cause is that the common stream flyash tube mill of opening all is to use out flowing water mud tube mill internal structure and technology, and the flyash grinding characters is lacked specific aim.The main grinding characters of flyash; The one, because of its particle contains a large amount of glass microballoons; Flyash flow velocity in mill is very fast, and material was seriously on the low side with the ratio (being called for short material section ratio) of abrasive media weight in use cement tube mill internal structure caused grinding easily, thereby reduced mill efficiency; The 2nd, the flyash specific surface area of finished products requires at 500m
2More than/the kg, and fine grinding storehouse flyash specific area has reached 400m
2More than/the kg; Include a large amount of micro mists, use the common tube grinding machine in time not discharge it outside mill, like this; Even be that they can cushion the obstruction abrasive media to coarse grained further grinding on the one hand; Reducing mill machine throughput, is that they can receive grinding for a long time on the other hand, causes the flyash water requirement higher.
Therefore, according to the quality requirement of flyash grinding characters and products thereof, the common stream flyash tube mill internal structure of opening is designed again, the flyash micro mist tube mill of development high efficiency, low power consumption is very necessary.
The utility model content:
The utility model purpose is exactly in order to remedy the defective of prior art, a kind of stream flyash micro mist tube mill of opening to be provided.
The utility model is realized through following technical scheme:
A kind of stream flyash micro mist tube mill of opening includes frame, and grinding mill barrel is installed on the frame; The left and right two ends of grinding mill barrel are separately installed with feed arrangement and drawing mechanism; Be provided with partition device for barn in the grinding mill barrel, partition device for barn is separated into the corase grind storehouse in left side and the fine grinding storehouse on right side with grinding mill barrel, and fine grinding storehouse right-hand member is provided with discharging comb plate; The annular inner wall in corase grind storehouse is provided with corase grind storehouse liner plate, and the annular inner wall in fine grinding storehouse is provided with fine grinding storehouse liner plate; Be placed with corase grind storehouse abrasive body in the corase grind storehouse; Be placed with fine grinding storehouse abrasive body in the fine grinding storehouse, it is characterized in that: said fine grinding storehouse abrasive body adopts miniature steel section, the diameter 10～16mm of miniature steel section; Corase grind storehouse abrasive body adopts big-and-middle shaped steel section, the diameter 18～25mm of big-and-middle shaped steel section.
A kind of stream flyash micro mist tube mill of opening, it is characterized in that: corase grind storehouse liner plate and fine grinding storehouse liner plate are respectively 2～3 spike line liner plates.
A kind of stream flyash micro mist tube mill of opening, it is characterized in that: double-deck partition device for barn is the double-deck partition device for barn of controllable flow rate type.
A kind of stream flyash micro mist tube mill of opening: it is characterized in that: in the middle of the fine grinding storehouse overflow ring is installed, its height dimension is 10%～15% of a grinding mill barrel diameter.
A kind of stream flyash micro mist tube mill of opening is characterized in that: multi-functional liner plate has been installed in the fine grinding storehouse, has been formed activation airborne dust circle.
A kind of stream flyash micro mist tube mill of opening, it is characterized in that: the discharging comb plate of fine grinding storehouse right-hand member setting is a kind of overflow type structure, overflow height be the grinding mill barrel radius 20%～30%, comb orifice flow passband 5%～10%, the wide 4～5mm in comb hole.
Double-deck partition device for barn is the double-deck partition device for barn of controllable flow rate type, can improve or reduce the flow velocity of flyash easily according to the material section ratio of the interior flyash in corase grind storehouse (5).
In the middle of the fine grinding storehouse overflow ring is installed, can optimizes the material section ratio of first part, fine grinding storehouse.
Multi-functional liner plate has been installed in the fine grinding storehouse, has been formed activation airborne dust circle, when activating the steel section, can also micro mist in the mill have been kicked up, strengthened selection by winnowing in the mill, reduced grinding.
The utility model is to form according to the material grinding Design Theory.The material grinding theory shows that material section ratio is within an appropriate scope (about 1:6) only, and higher mill efficiency just can be arranged, and expects section than being decided by to grind interior material flow, and then the section of expecting is than low for the material flow height, and the low then material section ratio of material flow is high.Concerning the grinding of flyash,, be prone to the material section than situation on the low side because the flow velocity of flyash is very fast.For this reason; The grinding spatial design became corase grind storehouse and two bins in fine grinding storehouse in the utility model will grind; In the corase grind storehouse, use the big-and-middle shaped steel section of Φ 18～Φ 25mm, in the fine grinding storehouse, use the miniature steel section of Φ 10～Φ 16mm, and each bin material flow is effectively controlled respectively.
At first, the double-deck partition device for barn of controllable flow rate type is set, its comb plate comb hole less (4～5mm) between thick, fine grinding storehouse; And flow rate low (5～10%), the comb hole is a radiation, adopts half-blindness plate overflow type; Overflow height 12～14%, on the basis of these material flow measures of slowing down, its center discharging awl also is designed to adjustable; Material section is when undesired in the corase grind storehouse; Can improve or reduce the material flow in corase grind storehouse easily through increase and decrease, with the material section ratio in effective optimization corase grind storehouse to center cone punishment in advance area.
Secondly, the overflow circle has been installed, with the material flow of control first part, fine grinding storehouse in centre position, fine grinding storehouse.Its shape is similar with the common circle of blocking, but middle complete closely knit atresia, its height dimension is 10%～15% of a mill diameter, is connected with grinding mill barrel through bolt.During installation, require the closely knit material that do not leak between adjacent two overflow circles.
At last, discharging comb plate development and design becomes overflow type, with the latter part material flow in control fine grinding storehouse, is characterized in overflow height suitably (20～30%), low flow rate (5～10%), little comb hole (4～5mm).
Produce the flyash micro mist because the utility model is mainly used in, therefore, require high (500m to the flyash specific area
2More than/the kg), in grinding process, be easy to generate the characteristics of grinding, the utility model is also developed in the fine grinding storehouse multi-functional liner plate has been installed, and forms activation airborne dust circle.It also plays airborne dust when improving the abrasive media locomitivity.Because multi-functional liner plate direct casting has been made arc airborne dust plate; When grinding mill barrel rotated, material was kicked up by the airborne dust plate in the grinding mill barrel, and the micro mist that fineness is qualified disperses in wind and is in suspended state; Make it in time taken out of outside the mill by wind-force; Significantly reduce " crossing grinding " phenomenon, improve mill efficiency, improve the quality of products.
The utlity model has following obviously advantage: at first, the double-deck partition device for barn that can effectively control material flow is set between the thickness storehouse, guarantees that the corase grind storehouse has rational material section ratio all the time; Secondly, the overflow ring is installed, has guaranteed the reasonable material section ratio of first part, fine grinding storehouse in the fine grinding storehouse; Once more, discharging comb plate is designed to overflow type, and suitable overflow height has guaranteed that the material section of latter part, fine grinding storehouse is than normal; At last, the fine grinding storehouse also is equipped with activation airborne dust circle, utilizes the interior wind-force of mill in time qualified micro mist to be discharged outside the mill, has reduced and has crossed grinding, when improving mill efficiency, has also reduced the water requirement of flyash.More than all measures, overcome that the material flow that the ordinary fly ash tube mill exists usually is too fast, the material section is than the serious on the low side and serious drawback of crossing grinding, significantly improved the grinding machine production capacity.
The utility model has the advantages that:
The utility model designs through the internal structure to the common tube grinding machine again; Make the flyash micro mist tube mill of this new construction; Can grind according to the grinding characters of flyash effectively; And the fineness that makes flyash rationally distributes in mill, thereby improves the mill efficiency of grinding machine, realizes improving output, reduces grinding pow consumption, the purpose of assurance product quality.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of overflow circle.
Fig. 3 is the structural representation of discharging comb plate.
Fig. 4 is the structural representation of multi-functional liner plate.
Fig. 5 is the structural representation of activation airborne dust circle.
The specific embodiment:
Referring to accompanying drawing.
A kind of stream flyash micro mist tube mill of opening; Include frame, frame is provided with supporting arrangement 8, and grinding mill barrel 4 is installed on the supporting arrangement 8; Grinding mill barrel 4 left and right two ends are separately installed with feed arrangement 1 and drawing mechanism 7; Be provided with partition device for barn 3 in the grinding mill barrel 4, partition device for barn 3 is separated into the corase grind storehouse 5 in left side and the fine grinding storehouse 2 on right side with grinding mill barrel 4, and fine grinding storehouse 2 right-hand members are provided with discharging comb plate 6; The annular inner wall in corase grind storehouse 5 is provided with corase grind storehouse liner plate 12, and the annular inner wall in fine grinding storehouse 2 is provided with fine grinding storehouse liner plate 10; Be placed with corase grind storehouse abrasive body 9 in the corase grind storehouse 5; Be placed with fine grinding storehouse abrasive body 11 in the fine grinding storehouse 2, fine grinding storehouse abrasive body 11 adopts miniature steel section, the diameter 10～16mm of miniature steel section; Corase grind storehouse abrasive body 9 adopts big-and-middle shaped steel section, the diameter 18～25mm of big-and-middle shaped steel section.
Corase grind storehouse liner plate 12 is respectively 2～3 spike line liner plates with fine grinding storehouse liner plate 10.
Double-deck partition device for barn 3 is the double-deck partition device for barn of controllable flow rate type.
In the middle of the fine grinding storehouse 2 overflow ring 13 is installed, its height dimension is 10%～15% of a grinding mill barrel diameter.
The discharging comb plate 6 of fine grinding storehouse 2 right-hand member settings is a kind of overflow type structures, overflow height be grinding mill barrel 4 radiuses 20%～30%, comb orifice flow passband 5%～10%, the wide 4～5mm in comb hole.
Claims (6)
1. drive stream flyash micro mist tube mill for one kind, include frame, grinding mill barrel is installed on the frame; The left and right two ends of grinding mill barrel are separately installed with feed arrangement and drawing mechanism; Be provided with partition device for barn in the grinding mill barrel, partition device for barn is separated into the corase grind storehouse in left side and the fine grinding storehouse on right side with grinding mill barrel, and fine grinding storehouse right-hand member is provided with discharging comb plate; The annular inner wall in corase grind storehouse is provided with corase grind storehouse liner plate, and the annular inner wall in fine grinding storehouse is provided with fine grinding storehouse liner plate; Be placed with corase grind storehouse abrasive body in the corase grind storehouse; Be placed with fine grinding storehouse abrasive body in the fine grinding storehouse, it is characterized in that: said fine grinding storehouse abrasive body adopts miniature steel section, the diameter 10～16mm of miniature steel section; Corase grind storehouse abrasive body adopts big-and-middle shaped steel section, the diameter 18～25mm of big-and-middle shaped steel section.
2. a kind of stream flyash micro mist tube mill of opening according to claim 1, it is characterized in that: corase grind storehouse liner plate and fine grinding storehouse liner plate are respectively 2～3 spike line liner plates.
3. a kind of stream flyash micro mist tube mill of opening according to claim 1, it is characterized in that: partition device for barn is the double-deck partition device for barn of controllable flow rate type.
4. a kind of stream flyash micro mist tube mill of opening according to claim 1, it is characterized in that: in the middle of the fine grinding storehouse overflow ring is installed, its height dimension is 10%～15% of a grinding mill barrel diameter.
5. a kind of stream flyash micro mist tube mill of opening according to claim 1 is characterized in that: multi-functional liner plate has been installed in the fine grinding storehouse, has been formed activation airborne dust circle.
6. a kind of stream flyash micro mist tube mill of opening according to claim 1; It is characterized in that: the discharging comb plate of fine grinding storehouse right-hand member setting is a kind of overflow type structure, overflow height be the grinding mill barrel radius 20%～30%, comb orifice flow passband 5%～10%, the wide 4～5mm in comb hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220049483 CN202621231U (en) | 2012-02-16 | 2012-02-16 | Open-circuit tube mill for coal ash micro powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220049483 CN202621231U (en) | 2012-02-16 | 2012-02-16 | Open-circuit tube mill for coal ash micro powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202621231U true CN202621231U (en) | 2012-12-26 |
Family
ID=47374476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220049483 Expired - Fee Related CN202621231U (en) | 2012-02-16 | 2012-02-16 | Open-circuit tube mill for coal ash micro powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202621231U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170394A (en) * | 2013-03-08 | 2013-06-26 | 姜其斌 | Special grinding machine for ultrafine coal ash |
| CN104437765A (en) * | 2014-12-08 | 2015-03-25 | 宁夏锦绣实业有限公司 | Special mill for ultrafine fly ash |
| CN104475196A (en) * | 2014-11-25 | 2015-04-01 | 广西鱼峰水泥股份有限公司 | Mill capable of improving mixing amount of road cement mineral powder |
-
2012
- 2012-02-16 CN CN 201220049483 patent/CN202621231U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170394A (en) * | 2013-03-08 | 2013-06-26 | 姜其斌 | Special grinding machine for ultrafine coal ash |
| CN104475196A (en) * | 2014-11-25 | 2015-04-01 | 广西鱼峰水泥股份有限公司 | Mill capable of improving mixing amount of road cement mineral powder |
| CN104437765A (en) * | 2014-12-08 | 2015-03-25 | 宁夏锦绣实业有限公司 | Special mill for ultrafine fly ash |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20150216 |
|
| EXPY | Termination of patent right or utility model |