CN104437763A - Grading method of coal mill steel balls and application thereof - Google Patents
Grading method of coal mill steel balls and application thereof Download PDFInfo
- Publication number
- CN104437763A CN104437763A CN201410492425.9A CN201410492425A CN104437763A CN 104437763 A CN104437763 A CN 104437763A CN 201410492425 A CN201410492425 A CN 201410492425A CN 104437763 A CN104437763 A CN 104437763A
- Authority
- CN
- China
- Prior art keywords
- steel ball
- sphere diameter
- accounting
- steel balls
- ball accounting
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/20—Disintegrating members
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a grading method of coal mill steel balls. The method comprises the step of filling steel balls with different sphere diameters in a ball mill according to the following weight ratios: 5-10% of steel balls with sphere diameters of 80mm, 10-15% of steel balls with sphere diameters of 70mm, 8-10% of steel balls with sphere diameters of 60mm; 10-15% of steel balls with sphere diameters of 50mm, 10-18% of steel balls with sphere diameters of 40mm, 12-18% of steel balls with sphere diameters of 30mm, 15-30% of steel balls with sphere diameters of 25mm, and 15-30% of steel balls with sphere diameters of 20mm. The grading method disclosed by the invention is used for reasonably grading the steel balls to reduce the energy consumption of a coal mill while ensuring the output of the coal mill, and meanwhile since the attrition of the steel balls is small, the production cost of the coal mill is reduced.
Description
Technical field
Grading method and the method for the present invention relates to a kind of coal pulverizer steel ball are grinding the application on steam coal powder.
Background technology
Coal pulverizer steel ball is that the current first high-abrasive material expendable part of industry is pulverized in the whole world, and it is the important base parts and components of coal pulverizer, and especially accurate industrial ball plays great function in the national economic development, and it is widely used in ore dressing, cement plant, power plant etc.
At present, low speed coal mill obtains and applies more widely in China's thermal power generation unit, and low speed coal mill coal adaptability is wide, safe and reliable to operation, easy to maintenance.But its metal consumption is large, and powder process power consumption is high, according to statistics, the wearing and tearing that low speed coal mill generally often grinds 1t coal steel ball are 300 ~ 350g, indivedual coal pulverizer is even higher, adds the wearing and tearing of lining plate of coal grinder, and it is usual about up to 0.5 ‰ that total metal damages the ratio grinding coal with institute.In conjunction with performance parameter and the coal characteristic of China's low speed coal mill, determine that the optimum gradation of steel ball has vital effect for the ball consumption and power consumption reducing ball mill.
The installation gauge ball lattice adopted through investigating domestic most power plant are the level proportioning of traditional φ 40-φ 60, because the abrading-ball installation grating of its technique is single, grinding benefit manifests lowly, greatly waste national resources, energy consumption is quite serious, also increased the weight of the labour intensity of workman simultaneously, reduced the profitability of enterprise to a great extent, have impact on the normal development of enterprise.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of and reduce the ball consumption of ball mill and the steel ball grading method of power consumption.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
The grading method of a kind of coal pulverizer steel ball provided by the invention, is encased in ball mill by the steel ball of different sphere diameter by following weight ratio:
The steel ball accounting of sphere diameter 80mm is 5-10%;
The steel ball accounting of sphere diameter 70mm is 10-15%;
The steel ball accounting of sphere diameter 60mm is 8-10%;
The steel ball accounting of sphere diameter 50mm is 10-15%;
The steel ball accounting of sphere diameter 40mm is 10-18%;
The steel ball accounting of sphere diameter 30mm is 12-18%;
The steel ball accounting of sphere diameter 25mm is 15-30%;
The steel ball accounting of sphere diameter 20mm is 15-30%.
Preferably, in above-mentioned grading method, the steel ball of different sphere diameter is encased in ball mill by following weight ratio:
The steel ball accounting of sphere diameter 80mm is 5-9%;
The steel ball accounting of sphere diameter 70mm is 10-12%;
The steel ball accounting of sphere diameter 60mm is 7-9%;
The steel ball accounting of sphere diameter 50mm is 10-13%;
The steel ball accounting of sphere diameter 40mm is 10-13%;
The steel ball accounting of sphere diameter 30mm is 12-17%;
The steel ball accounting of sphere diameter 25mm is 15-20%;
The steel ball accounting of sphere diameter 20mm is 16-25%.
Further, the steel ball of different sphere diameter is encased in ball mill by following weight ratio:
The steel ball accounting of sphere diameter 80mm is 5%;
The steel ball accounting of sphere diameter 70mm is 10%;
The steel ball accounting of sphere diameter 60mm is 8%;
The steel ball accounting of sphere diameter 50mm is 10%;
The steel ball accounting of sphere diameter 40mm is 10%;
The steel ball accounting of sphere diameter 30mm is 12%;
The steel ball accounting of sphere diameter 25mm is 20%;
The steel ball accounting of sphere diameter 20mm is 25%.
Further, the steel ball of different sphere diameter is encased in ball mill by following weight ratio:
The steel ball accounting of sphere diameter 80mm is 7%;
The steel ball accounting of sphere diameter 70mm is 11%;
The steel ball accounting of sphere diameter 60mm is 8%;
The steel ball accounting of sphere diameter 50mm is 11%;
The steel ball accounting of sphere diameter 40mm is 12%;
The steel ball accounting of sphere diameter 30mm is 13%;
The steel ball accounting of sphere diameter 25mm is 20%;
The steel ball accounting of sphere diameter 20mm is 18%.
Further, the steel ball of different sphere diameter is encased in ball mill by following weight ratio:
The steel ball accounting of sphere diameter 80mm is 7%;
The steel ball accounting of sphere diameter 70mm is 12%;
The steel ball accounting of sphere diameter 60mm is 9%;
The steel ball accounting of sphere diameter 50mm is 12%;
The steel ball accounting of sphere diameter 40mm is 13%;
The steel ball accounting of sphere diameter 30mm is 15%;
The steel ball accounting of sphere diameter 25mm is 16%;
The steel ball accounting of sphere diameter 20mm is 16%.
Further, the steel ball of different sphere diameter is encased in ball mill by following weight ratio:
The steel ball accounting of sphere diameter 80mm is 8%;
The steel ball accounting of sphere diameter 70mm is 11%;
The steel ball accounting of sphere diameter 60mm is 7%;
The steel ball accounting of sphere diameter 50mm is 13%;
The steel ball accounting of sphere diameter 40mm is 12%;
The steel ball accounting of sphere diameter 30mm is 17%;
The steel ball accounting of sphere diameter 25mm is 15%;
The steel ball accounting of sphere diameter 20mm is 17%.
Further, the steel ball of different sphere diameter is encased in ball mill by following weight ratio:
The steel ball accounting of sphere diameter 80mm is 9%;
The steel ball accounting of sphere diameter 70mm is 10%;
The steel ball accounting of sphere diameter 60mm is 9%;
The steel ball accounting of sphere diameter 50mm is 11%;
The steel ball accounting of sphere diameter 40mm is 11%;
The steel ball accounting of sphere diameter 30mm is 14%;
The steel ball accounting of sphere diameter 25mm is 20%;
The steel ball accounting of sphere diameter 20mm is 16%.
The above-mentioned coal pulverizer steel ball grading method provided of the present invention can be used for grinding steam coal powder.
The present invention's steel ball sphere diameter used is between 20-80mm, and each sphere diameter steel ball is mixed in ball mill by above-mentioned weight ratio.Wherein, large pellet impact power is large, and Main Function is material to smash; Bead impulsive force is little, and Main Function is material to carry out fine lapping.In the present invention, the steel ball of different sphere diameter coordinates step by step, and wherein the steel ball consumption of intermediate specification is less, and the minimum and maximum steel ball consumption of sphere diameter is more, and grating is rationally effective.
Beneficial effect of the present invention is:
Because ball charge capacity of tube mill reduces, in ball mill, material increases, and the impulsive force material that steel ball leaves generation absorbs more abundant, and steel ball is reduced the destructive power of rotary drum lining plate.Again owing to using the minor diameter steel ball of φ 20, φ 25 in a large number, the impulsive force that steel ball leaves generation is disperseed further, thus the impulsive force of steel ball to liner plate is reduced to minimum level.Add that the basis of ball mill optimization is exactly reduce the crushing force of steel ball, increase steel ball grinding forces, so the average ball diameter of steel ball will decline to a great extent, itself be exactly reduce frequency and degree that liner plate is clashed into, extend the service life of liner plate.Therefore, after ball mill optimization completes, near balling drum, substantially can't hear the shock sound between steel ball and between steel ball and liner plate, also just let alone steel ball have impact on the liner plate life-span, also end reaction is on coal pulverizer repair and maintenance amount declines to a great extent, and decreases production cost.
Production practices prove, after coal pulverizer steel ball grading method of the present invention uses, and ball mill stable and reliable operation, because the specification of grating increases, Natural classification is more rational, effectively raises mill grinding efficiency; While greatly reducing ball mill operate power, the coal dust ground out is thinner, is beneficial to Thorough combustion in boiler, significant to the thermal efficiency improving boiler.
Detailed description of the invention
Below by five specific embodiments, coal pulverizer steel ball grading method of the present invention is further detailed, same coal pulverizer is selected to test, before and after test, this ball mill is exerted oneself constant, and contrast uses the change of indices before and after grading method of the present invention, shown in table specific as follows:
Table one each embodiment steel ball dress ball weight ratio
Table two
As can be seen from table two five embodiments test before and after comparing result, use grading method of the present invention after, the electric current of coal pulverizer significantly reduces, and the coal dust ground out is thinner.
Production practices prove, after coal pulverizer steel ball grading method of the present invention uses, and ball mill stable and reliable operation, because the specification of grating increases, Natural classification is more rational, effectively raises mill grinding efficiency; While greatly reducing ball mill operate power, the coal dust ground out is thinner, is beneficial to Thorough combustion in boiler, significant to the thermal efficiency improving boiler.
Claims (8)
1. a grading method for coal pulverizer steel ball, is characterized in that, is encased in ball mill by the steel ball of different sphere diameter by following weight ratio:
The steel ball accounting of sphere diameter 80mm is 5-10%;
The steel ball accounting of sphere diameter 70mm is 10-15%;
The steel ball accounting of sphere diameter 60mm is 8-10%;
The steel ball accounting of sphere diameter 50mm is 10-15%;
The steel ball accounting of sphere diameter 40mm is 10-18%;
The steel ball accounting of sphere diameter 30mm is 12-18%;
The steel ball accounting of sphere diameter 25mm is 15-30%;
The steel ball accounting of sphere diameter 20mm is 15-30%.
2. the grading method of coal pulverizer steel ball according to claim 1, is characterized in that, the steel ball of different sphere diameter is encased in ball mill by following weight ratio:
The steel ball accounting of sphere diameter 80mm is 5-9%;
The steel ball accounting of sphere diameter 70mm is 10-12%;
The steel ball accounting of sphere diameter 60mm is 7-9%;
The steel ball accounting of sphere diameter 50mm is 10-13%;
The steel ball accounting of sphere diameter 40mm is 10-13%;
The steel ball accounting of sphere diameter 30mm is 12-17%;
The steel ball accounting of sphere diameter 25mm is 15-20%;
The steel ball accounting of sphere diameter 20mm is 16-25%.
3. the grading method of coal pulverizer steel ball according to claim 1, is characterized in that, the steel ball of different sphere diameter is encased in ball mill by following weight ratio:
The steel ball accounting of sphere diameter 80mm is 5%;
The steel ball accounting of sphere diameter 70mm is 10%;
The steel ball accounting of sphere diameter 60mm is 8%;
The steel ball accounting of sphere diameter 50mm is 10%;
The steel ball accounting of sphere diameter 40mm is 10%;
The steel ball accounting of sphere diameter 30mm is 12%;
The steel ball accounting of sphere diameter 25mm is 20%;
The steel ball accounting of sphere diameter 20mm is 25%.
4. the grading method of coal pulverizer steel ball according to claim 1, is characterized in that, the steel ball of different sphere diameter is encased in ball mill by following weight ratio:
The steel ball accounting of sphere diameter 80mm is 7%;
The steel ball accounting of sphere diameter 70mm is 11%;
The steel ball accounting of sphere diameter 60mm is 8%;
The steel ball accounting of sphere diameter 50mm is 11%;
The steel ball accounting of sphere diameter 40mm is 12%;
The steel ball accounting of sphere diameter 30mm is 13%;
The steel ball accounting of sphere diameter 25mm is 20%;
The steel ball accounting of sphere diameter 20mm is 18%.
5. the grading method of coal pulverizer steel ball according to claim 1, is characterized in that, the steel ball of different sphere diameter is encased in ball mill by following weight ratio:
The steel ball accounting of sphere diameter 80mm is 7%;
The steel ball accounting of sphere diameter 70mm is 12%;
The steel ball accounting of sphere diameter 60mm is 9%;
The steel ball accounting of sphere diameter 50mm is 12%;
The steel ball accounting of sphere diameter 40mm is 13%;
The steel ball accounting of sphere diameter 30mm is 15%;
The steel ball accounting of sphere diameter 25mm is 16%;
The steel ball accounting of sphere diameter 20mm is 16%.
6. the grading method of coal pulverizer steel ball according to claim 1, is characterized in that, the steel ball of different sphere diameter is encased in ball mill by following weight ratio:
The steel ball accounting of sphere diameter 80mm is 8%;
The steel ball accounting of sphere diameter 70mm is 11%;
The steel ball accounting of sphere diameter 60mm is 7%;
The steel ball accounting of sphere diameter 50mm is 13%;
The steel ball accounting of sphere diameter 40mm is 12%;
The steel ball accounting of sphere diameter 30mm is 17%;
The steel ball accounting of sphere diameter 25mm is 15%;
The steel ball accounting of sphere diameter 20mm is 17%.
7. the grading method of coal pulverizer steel ball according to claim 1, is characterized in that, the steel ball of different sphere diameter is encased in ball mill by following weight ratio:
The steel ball accounting of sphere diameter 80mm is 9%;
The steel ball accounting of sphere diameter 70mm is 10%;
The steel ball accounting of sphere diameter 60mm is 9%;
The steel ball accounting of sphere diameter 50mm is 11%;
The steel ball accounting of sphere diameter 40mm is 11%;
The steel ball accounting of sphere diameter 30mm is 14%;
The steel ball accounting of sphere diameter 25mm is 20%;
The steel ball accounting of sphere diameter 20mm is 16%.
8. the coal pulverizer steel ball grading method described in above-mentioned any one claim is grinding the application on steam coal powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410492425.9A CN104437763A (en) | 2014-09-24 | 2014-09-24 | Grading method of coal mill steel balls and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410492425.9A CN104437763A (en) | 2014-09-24 | 2014-09-24 | Grading method of coal mill steel balls and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104437763A true CN104437763A (en) | 2015-03-25 |
Family
ID=52884969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410492425.9A Pending CN104437763A (en) | 2014-09-24 | 2014-09-24 | Grading method of coal mill steel balls and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104437763A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251571A (en) * | 2015-10-08 | 2016-01-20 | 国电龙源节能技术有限公司 | Ball mill ball-milling method with low abrasive powder unit consumption |
| CN106902934A (en) * | 2017-05-02 | 2017-06-30 | 孙东印 | A kind of steel ball grading method of ball mill and its application |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030038198A1 (en) * | 2001-05-31 | 2003-02-27 | Starkey Associates Grinding Design And Process Engineering | Ball mill |
| CN102284325A (en) * | 2011-08-29 | 2011-12-21 | 宁国市锦宏耐磨材料有限公司 | Fewer ball milling method for ball mill |
| CN202666934U (en) * | 2012-07-05 | 2013-01-16 | 连云港海蓝研磨材料有限公司 | Ball mill |
| CN103041894A (en) * | 2011-10-13 | 2013-04-17 | 聂冰晶 | Steel ball proportional process of ball mill |
| CN203750614U (en) * | 2013-08-30 | 2014-08-06 | 山东天立发展集团有限公司 | Steel ball coal mill |
-
2014
- 2014-09-24 CN CN201410492425.9A patent/CN104437763A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030038198A1 (en) * | 2001-05-31 | 2003-02-27 | Starkey Associates Grinding Design And Process Engineering | Ball mill |
| CN102284325A (en) * | 2011-08-29 | 2011-12-21 | 宁国市锦宏耐磨材料有限公司 | Fewer ball milling method for ball mill |
| CN103041894A (en) * | 2011-10-13 | 2013-04-17 | 聂冰晶 | Steel ball proportional process of ball mill |
| CN202666934U (en) * | 2012-07-05 | 2013-01-16 | 连云港海蓝研磨材料有限公司 | Ball mill |
| CN203750614U (en) * | 2013-08-30 | 2014-08-06 | 山东天立发展集团有限公司 | Steel ball coal mill |
Non-Patent Citations (1)
| Title |
|---|
| 刘建国等: "球磨机少球磨煤节能技术及其应用", 《发电设备》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251571A (en) * | 2015-10-08 | 2016-01-20 | 国电龙源节能技术有限公司 | Ball mill ball-milling method with low abrasive powder unit consumption |
| CN105251571B (en) * | 2015-10-08 | 2018-04-10 | 国电龙源节能技术有限公司 | A kind of ball mill ball grinding method of low milling unit consumption |
| CN106902934A (en) * | 2017-05-02 | 2017-06-30 | 孙东印 | A kind of steel ball grading method of ball mill and its application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103567019B (en) | A kind of gradual change compaction type HP type coal pulverizer | |
| CN102179272A (en) | Final grinding system of rolling machine in steel slag and mineral slag micropowder production line | |
| CN110449246A (en) | A kind of pair of mineral carry out selective milling, the method for sorting and implementation equipment | |
| CN203033769U (en) | Phosphate-pulp producing and breaking system | |
| CN104437763A (en) | Grading method of coal mill steel balls and application thereof | |
| CN202984100U (en) | Ceramic grading wheel | |
| CN106914312A (en) | A kind of whole grinding vertical | |
| CN104324781A (en) | Steel ball proportioning process for ball mill | |
| CN110898960B (en) | System for preparing high-quality recycled aggregate based on polished shot blasting broken waste concrete | |
| CN201832683U (en) | Ultra-fine grinding and classification device | |
| CN205199669U (en) | Special production line of metal silica flour processing | |
| CN208131171U (en) | A kind of ball mill barrel interior lining panel | |
| CN203830112U (en) | Double sorting type semi-finished grinding system | |
| CN110773298A (en) | Staged grinding method for slag micro powder | |
| CN203304028U (en) | Grinding body | |
| CN203990758U (en) | Dustproof reaction pulverizer | |
| CN204338218U (en) | A kind of follow-on gyratory crusher | |
| CN208669299U (en) | A kind of grinding wheel flour milling continuous milling machine | |
| CN207324971U (en) | A kind of end grinding vertical | |
| CN204122190U (en) | Ball mill aside-liner | |
| CN103395784B (en) | Crushing process reducing crystal material excessive crushing and increasing outputs of products of specified grades | |
| CN207187869U (en) | A kind of vertical impact crusher impeller | |
| CN205887022U (en) | High -efficient automatic re -setting crusher hammer | |
| CN104511361A (en) | Phosphate ore crushing apparatus | |
| CN201692846U (en) | Grinder for producing slurry for drilling well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |
|
| RJ01 | Rejection of invention patent application after publication |