EP0794008B1 - Broyeur à boulets - Google Patents

Broyeur à boulets Download PDF

Info

Publication number
EP0794008B1
EP0794008B1 EP97400482A EP97400482A EP0794008B1 EP 0794008 B1 EP0794008 B1 EP 0794008B1 EP 97400482 A EP97400482 A EP 97400482A EP 97400482 A EP97400482 A EP 97400482A EP 0794008 B1 EP0794008 B1 EP 0794008B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
separator
pipework
coal
drum
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.)
Expired - Lifetime
Application number
EP97400482A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0794008A1 (fr
Inventor
Daniel Fontanille
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Power Boiler SA
Original Assignee
Alstom Energy Systems SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alstom Energy Systems SA filed Critical Alstom Energy Systems SA
Publication of EP0794008A1 publication Critical patent/EP0794008A1/fr
Application granted granted Critical
Publication of EP0794008B1 publication Critical patent/EP0794008B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B02C17/1835—Discharging devices combined with sorting or separating of material
    • B02C17/184—Discharging devices combined with sorting or separating of material with separator arranged in discharge path of crushing zone
    • B02C17/1845—Discharging devices combined with sorting or separating of material with separator arranged in discharge path of crushing zone with return of oversize material to crushing zone
    • 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
    • B02C17/183—Feeding or discharging devices
    • B02C17/186—Adding fluid, other than for crushing by fluid energy
    • B02C17/1865—Adding fluid, other than for crushing by fluid energy after crushing
    • B02C17/187—Adding fluid, other than for crushing by fluid energy after crushing with recirculation of material to crushing zone
    • 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
    • B02C17/183—Feeding or discharging devices
    • B02C17/186—Adding fluid, other than for crushing by fluid energy
    • B02C17/1875—Adding fluid, other than for crushing by fluid energy passing gas through crushing zone
    • B02C17/189—Adding fluid, other than for crushing by fluid energy passing gas through crushing zone with return of oversize material to crushing zone

Definitions

  • the present invention relates to a cannonballs.
  • a ball mill substantially horizontal axis of rotation comprising a drum supported by two pins of the same axis of rotation located at each end of said drum, a substantially vertical pipe, thanks to which the raw coal can be brought, arranged at proximity of a cylinder of the same axis of rotation arranged in each journal and opening into the drum and space between the journal and the cylinder being connected to a pulverized coal outlet pipe by through a separator.
  • each journal in each journal is arranged a hollow cylinder carrying on its outer surface an elastic Archimedes screw for raw coal supply on which falls the raw coal leaving the piping and that brings this coal into the drum. Air said main is injected into the drum from the inside of this cylinder, to drive the ground grains inside of the drum. The space between the pin and the screw serves of pulverized coal and is connected to the separator. Additional air is injected into the piping upstream of the separator.
  • a raw coal guide member is disposed under said piping for gravity driving the coal in said cylinder with a rigid Archimedes screw on its surface interior, a main air supply is provided upstream of the separator on said piping, this air being completely channeled towards the inside of the cylinder.
  • the main air supply by the cylinder allows a central injection in the direction of the axis of rotation of this air in the drum and ensures an effect optimal of it.
  • this main air can be easily controlled, the measurement of its flow allowing the determination of the quantity of pulverized coal leaving the mill.
  • the rigid Archimedes screw carried by the cylinder is construction less fragile than the elastic screw of art and is not subject to wear due to the fall of the coal.
  • the main air flow ensures a pre-drying of the efficient raw coal, regardless of the load of the mill.
  • the supply of raw coal and the evacuation of pulverized coal is made by two different paths. This ensures a good flow of the pulverized coal in the trunnion.
  • the separator may include air supply additional and / or said outlet pipe may include an additional air supply.
  • the additional air supply is control.
  • the guide member is a sheath of angled shape connected by its lower end to a end of the cylinder, the lower end of the raw coal supply piping being arranged above of this sheath.
  • Figure 1 shows a longitudinal sectional view of a coal grinding plant.
  • Figure 2 is a longitudinal sectional view of detail of a preferred embodiment of the invention.
  • the installation of coal grinding includes at least one device feed 10 feeding coal to a ball mill generally designated by reference 20.
  • the feed device 10 comprises a hopper of storage 1 from which the coal 2 is extracted which is brought by a chain conveyor 3 placed in a box 4 and driven by a motor 5, at a first end of a pipe substantially vertical 6.
  • the crusher 20 includes an axis of rotation drum substantially horizontal and comprising a central part cylindrical 11 terminated by two conical portions 12 and 13 to which are attached respectively two pins 14 and 15 of the same axis of rotation intended to support the drum.
  • the pins are placed respectively on two bearings 16 and 17 fitted with pads.
  • the crusher is driven in rotation by means of a toothed ring 18 cooperating with a pinion not shown driven by a gear motor electric not shown.
  • the grinder is filled with balls 27, for example steel.
  • the raw coal is supplied by pipe 6.
  • This piping 6 is equipped with an air supply 30 main.
  • a guide member 31 can be formed of an inclined plate fixed in a fixed tube 41 whose mouth opens into a cylinder 32 of the same axis than the drum and arranged opposite the end bottom of the pipe 6, a radial opening being produced in said tube 41 for the passage and the fall of the raw coal from this pipe 6 on the plate 31.
  • This last gravity drives raw coal into the cylinder 32 disposed in the pin 15, bearing on its inner surface a rigid metal Archimedes screw and opening into the drum.
  • This cylinder 32 is integral with the drum by arms, for example, and turns with it, its axis of rotation being the same as that of the drum.
  • the piping 6 is installed in the separator 33 and the raw coal as well as all of the main air is channeled towards the inside of cylinder 32 by a shape of the inclined plate 31 and by a conical member 34 at the bottom of the piping 6 preventing the air from rising at this level.
  • This conical organ has another function which will be seen later.
  • the resulting pulverized carbon is discharged into space 35 between the pin 15 and the cylinder 32 which is connected via separator 33 to a pipe outlet 36.
  • the pulverized coal therefore rises in the space between these two parts 33A and 33B and passes between the space included between the second part 33B and the piping 6 by orifices 33C to then evacuate in the line of exit 36.
  • FIG. 2 represents another embodiment of the invention.
  • the guide member 31 consists of an elbow-shaped sheath connected by its upper end at the lower mouth of the second tubular part 33B of separator 33 and by its end lower than the mouth of cylinder 32 via of a rotating joint.
  • the lower end of the piping supply of raw coal 6 is arranged above this sheath 31.
  • the mouth of the first tubular part 33A of the separator 33 is directly connected to pin 15 by another angled sheath 40 external by through a rotating joint.
  • An annular orifice 33C is arranged above the second part 33B and the first part 33A is extended by a tube coaxial with the pipe 6 and opening into the outlet line 36.
  • the raw coal therefore falls into the sheath 31 and slides in the cylinder 32 to be brought by the internal screw of the cylinder 32 in the drum.
  • the main air is sent to the drum by the same route.
  • the pulverized coal is evacuated into the space 35 between the pin 15 and the cylinder 32, in the space between the two sheaths 31, 40, between the two tubular parts of the separator 33 then in the baffle formed by orifice 33C and the extension of the first part 33A of the separator 33.
  • This embodiment has the advantage of presenting a total seal between the supply space raw coal and the pulverized coal discharge space.
EP97400482A 1996-03-08 1997-03-03 Broyeur à boulets Expired - Lifetime EP0794008B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9602953 1996-03-08
FR9602953A FR2745731B1 (fr) 1996-03-08 1996-03-08 Broyeur a boulets

Publications (2)

Publication Number Publication Date
EP0794008A1 EP0794008A1 (fr) 1997-09-10
EP0794008B1 true EP0794008B1 (fr) 2001-11-28

Family

ID=9490002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400482A Expired - Lifetime EP0794008B1 (fr) 1996-03-08 1997-03-03 Broyeur à boulets

Country Status (11)

Country Link
US (1) US5873532A (ru)
EP (1) EP0794008B1 (ru)
CN (1) CN1071143C (ru)
DE (1) DE69708479T2 (ru)
DK (1) DK0794008T3 (ru)
ES (1) ES2164998T3 (ru)
FR (1) FR2745731B1 (ru)
PT (1) PT794008E (ru)
RU (1) RU2152825C2 (ru)
UA (1) UA40654C2 (ru)
ZA (1) ZA971942B (ru)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2793168B1 (fr) * 1999-05-07 2001-06-22 Alstom Broyeur a boulets
CN100387349C (zh) * 2005-06-01 2008-05-14 上海重型机器厂有限公司 双进双出钢球磨煤机
FI122276B (fi) * 2010-04-12 2011-11-15 Outotec Oyj Laitteisto jauhinkappaleiden syöttämiseksi jauhatusmyllyyn
DE102012013279A1 (de) * 2012-07-05 2014-01-09 Roland Nied Verfahren zum Betrieb einer Rührwerkskugelmühle sowie Rührwerkskugelmühle dafür
RU2504434C1 (ru) * 2012-10-09 2014-01-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Кузбасский государственный технический университет имени Т.Ф. Горбачева" (КузГТУ) Устройство для установления остаточной метаноносности угля
CN104338598B (zh) * 2013-07-27 2017-11-10 枣庄福德通用机械有限公司 煤岩矿样粉碎机
CN103521310A (zh) * 2013-10-30 2014-01-22 江苏秋林重工股份有限公司 燃烧水煤浆制浆球磨机机组
US10086379B2 (en) * 2015-02-27 2018-10-02 Aaron Engineered Process Equipment, Inc. Rotary mill
CN105597903A (zh) * 2015-12-29 2016-05-25 中国矿业大学 一种工业球磨机粉尘分离及气体干燥循环系统及方法
CN106423420B (zh) * 2016-09-20 2019-06-18 派勒（天津）纳米技术有限公司 一种干式多级智能搅拌球磨机
CN107694697B (zh) * 2017-11-14 2019-03-29 枣庄京弘电力材料有限公司 一种球磨机下料口防堵装置
CN107899707B (zh) * 2017-12-14 2019-08-20 佛山市万良商贸有限公司 一种煤炭破碎分级设备
CN108080112B (zh) * 2017-12-14 2020-04-03 佛山市万良商贸有限公司 一种高效电厂煤炭破碎分级设备
CN110523329A (zh) * 2019-06-17 2019-12-03 江苏新美星包装机械股份有限公司 真空吸粉装置
CN114273025A (zh) * 2021-09-27 2022-04-05 济南宏腾信息科技有限公司 一种人造石墨负极材料生产方法
CN114932003A (zh) * 2022-05-18 2022-08-23 北京干雾科技有限公司 一种用于分选石子煤的球磨机
WO2024061389A1 (de) * 2022-09-21 2024-03-28 Vysoká Škola Báňská - Technická Univerzita Ostrava Einrichtung zum abscheiden von sauren gasbestandteilen aus rauchgasen

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US931045A (en) * 1909-08-17 George Stockham Emerick Grinding-mill.
US744451A (en) * 1902-07-30 1903-11-17 Max F Abbe Tubular ball-mill.
US792778A (en) * 1904-04-25 1905-06-20 William A Koeneman Pebble-mill.
US927054A (en) * 1908-03-26 1909-07-06 Ira A Knecht Tube-mill for cement, stones, and the like.
US926441A (en) * 1908-05-13 1909-06-29 Reuben Ruland Shafter Tubular triturating-mill.
US1719971A (en) * 1927-02-18 1929-07-09 Fahland Karl Drum-mill feeder
US2174630A (en) * 1936-11-12 1939-10-03 Hardinge Co Inc Classification system for pulverized materials
DE1062532B (de) * 1957-03-22 1959-07-30 Babcock & Wilcox Dampfkessel Rohrmuehle fuer Mahltrocknung
FR1323748A (fr) * 1962-03-02 1963-04-12 Foster Wheeler Corp Broyeur-pulvérisateur
US4265322A (en) * 1978-09-19 1981-05-05 Maco-Meudon Compressed air feed control system for a tapping device
DE3130925A1 (de) * 1981-08-05 1983-02-17 Deutsche Babcock Ag, 4200 Oberhausen Rohrmuehle
GB8430514D0 (en) * 1984-12-04 1985-01-09 Smidth & Co As F L Tube mill
US4750677A (en) * 1985-07-19 1988-06-14 Taylor David W Classifier for comminution of pulverulent material by fluid energy
FR2591127B1 (fr) * 1985-12-11 1989-10-06 Stein Industrie Broyeur cylindrique rotatif pour la preparation d'un materiau pulverulent en deux qualites differentes.
FR2721711B1 (fr) * 1994-06-24 1996-07-26 Gec Alsthom Stein Ind Dispositif de mesure de la quantité de charbon dans un broyeur à boulets.

Also Published As

Publication number Publication date
DK0794008T3 (da) 2002-03-18
CN1162504A (zh) 1997-10-22
ZA971942B (en) 1997-11-26
EP0794008A1 (fr) 1997-09-10
US5873532A (en) 1999-02-23
FR2745731A1 (fr) 1997-09-12
FR2745731B1 (fr) 1998-04-17
CN1071143C (zh) 2001-09-19
DE69708479T2 (de) 2002-05-16
DE69708479D1 (de) 2002-01-10
ES2164998T3 (es) 2002-03-01
UA40654C2 (ru) 2001-08-15
PT794008E (pt) 2002-05-31
RU2152825C2 (ru) 2000-07-20

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