EP2582455A1 - Closed-circuit grinding plant having an integrated buffer - Google Patents
Closed-circuit grinding plant having an integrated bufferInfo
- Publication number
- EP2582455A1 EP2582455A1 EP11718380.6A EP11718380A EP2582455A1 EP 2582455 A1 EP2582455 A1 EP 2582455A1 EP 11718380 A EP11718380 A EP 11718380A EP 2582455 A1 EP2582455 A1 EP 2582455A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- kreislaufmahlanlage
- buffer
- grinding
- circuit
- regrind
- 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.)
- Granted
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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
-
- 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
- B02C23/02—Feeding devices
-
- 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
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating 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
- 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
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
- B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/286—Feeding devices
Definitions
- the invention relates to a Kreislaufmahlstrom for crushing brittle material, in which at least one device for crushing and at least one device for separating crushed material with each other and hold the brittle material in the Mahlniklauf until it passes through the device for separation due to the degree of comminution is removed from the grinding circuit, wherein an inlet of fresh ground material in the circulation is regulated by a control loop and a corresponding method for operating this Kreislaufmahlstrom.
- the external buffer When restarting the Kreislaufmahlstrom the external buffer is switched again in a second configuration to the Kreislaufmahlstrom, so that the external buffer can be emptied into the Kreislaufmahlstrom.
- emptying the ground material In this type of emptying the ground material is either in the dead volume of Kreislaufmahlstrom or in the external buffer. Uncrushed or incompletely shredded material is always present.
- the devices for selectively switching the external buffer into the recycle mill are complex, expensive and prone.
- the filling state of the buffer must be checked individually before emptying the Kreislaufmahlstrom, so that the external buffer is not overfilled.
- the object of the invention is therefore to provide a Kreislaufmahlstrom available that can remove without external buffer in the dead volume of Kreislaufmahlstrom befindl I regrind from the Transportgewerken the Kreislaufmahlstrom.
- Another object associated with the first object of the invention is therefore to propose a method for operating the plant.
- the second object is achieved by using a buffer for ground material in the grinding circuit, wherein the level of the buffer is integrated as a controlled variable in the control loop.
- a buffer for ground material in the grinding circuit wherein the level of the buffer is integrated as a controlled variable in the control loop.
- bunker In order not to require further trades for filling and emptying or by not increasing the entire height of the grinding cycle through the integrated circuit in the bake buffer, hereinafter referred to bunker, it is necessary to place the bunker in place in the meal Integrate a cycle where there is sufficient drop height for the recirculating material in the circulation.
- the feeding device for the roller press is designed as an overflow, wherein on the feeder if possible only so much ground material per unit time is given up that the fill level in the feeder remains as constant as possible. In this case, slightly more millbase is added to the feeder as necessary to keep the level of the feeder constant.
- regrind runs then in the feeder by an overflow and falls from there next to the roller press and an underlying disagglomeration tion device in a bunker, which has a volume which is about as large as the dead volume of Kreislaufmahlstrom.
- the bunker empties either into the first sifter operating below the roller press or as a disagglomerator or to a trans- Portband below the separator operating as disagglomerator.
- the bunker is arranged slightly below or parallel to the roller press and in the second case, the bunker is arranged approximately at the same height to the working as disagglomerator sifter.
- the use of the bunker which is integrated in the Kreislaufmahlanalge and is filled by an overflow of the feeder, has the advantage that thereby the feeder can be configured without bunker. Without its own bunker, the feeder requires less height, whereby the Kreislaufmahlstrom must lift the recirculating material in the circulation over a lower height. This saves energy costs for maintaining the grinding material circulation.
- the bunker acting as a buffer is embedded in the circuit and is not connected to the circuit from the outside, the bunker is part of the control loop of the entire system.
- FIG. 1 shows a sketch of a Kreislaufmahlstrom invention is shown.
- Ground material to be comminuted enters the Kreislaufmahlstrom via conveyor belts 1 a, 1 b or 1 c.
- the grinding material is placed in the bunker 2 when the material to be ground with conveyor belt 1 a, when the material to be ground on the conveyor belt 1 b, the material is deposited directly on the feeder 6 of the central roller press RP and c is on task of the material to be ground on conveyor belt 1 c the millbase passed into the working as disagglomeat V-classifier 8.
- Each storage location has different advantages.
- a Re- gelschleife be constructed so that the level of the bunker 2 via a measuring device, here via pressure cans 2a, is measured and depending on the level of the bunker, the amount of fresh ground material, which enters the Kreislaufmahlstrom via conveyor belt 1 a, regulated.
- the control can regulate the speed and thus the transport performance of the conveyor belt 1 a in order to always keep the same amount of ground material in circulation.
- the regrind can also be fed into the grinding circuit via conveyor belt 1c, the millbase being fed by conveyor belt 1c falling directly into the classifier 8 serving as disagglomerator, where it helps to remove the slugs of shredded and agglomerated material falling out of the central roller presses RP Deslagglomerate grinding stock. Furthermore, the fine material contained in the fresh material is immediately dissected, and thus does not burden the roller press. Another advantage of the task at this location is that the fresh material, which is usually still wet, is first subjected to a pre-drying in the circulation. Predrying will aid the performance of the sifter in the circuit.
- Classifying air SL which is blown through a compressor in the V-classifier 8, lifts the light fraction of the ground material, which is released from the slugs during deagglomeration on the sight plates 8a, in the riser shaft 9 to a second Stabkorbsichter 1 0 pneumatically.
- Stabkorbsichter 1 0 is separated from the light fraction of crushed grind from V-classifier 8, the very fine fraction of the crushed material to be ground and leaves the
- this second mechanical circuit separates from the pneumatic circuit described above at the lower end of the V-classifier 8, where after the deagglomeration the heavy fraction leaves the V-classifier 8 downwards through the outlet 8b. From the lower outlet 8b of the V-classifier 8, the millbase falls on a trans- Portband 3, which conveys the heavy fraction to a bucket elevator 4, which has a high dead volume.
- bucket elevator 4 the heavy fraction of the comminuted material to be ground is lifted and deposited at the upper end of the bucket elevator on the conveyor belt 5, through which the heavy fraction of the comminuted material is again fed to the feeder 6 of the central roller press RP and there with the fraction, the from the rod basket sifter 1 0 was rejected.
- the feeder 6 of the central roller press RP is constructed to have an overflow 7.
- This overflow 7 leads the excess of grinding stock which is deposited on the feeding device 6 into the bunker 2, where a regulating device controls the amount of grinding stock introduced into the cycle grinding plant on the basis of the filling level of the bunker 2.
- Bunker 2 enlatuarity at its lower end on the conveyor belt 3 or in another, not shown configuration in the V-Secure 8th
- an external buffer is integrated into the grinding circuit and is there as an internal buffer for the grinding cycle.
- the design of the buffer is less important.
- the buffer is described as a bunker from above with Ground material is filled and delivers ground material down over an outlet.
- any other form of buffer is conceivable which can be continuously charged with regrind and can deliver it continuously.
- the integration of the buffer allows a reduced height of the Kreislaufmahlstrom, which saves energy costs.
- the level of the integrated buffer is suitable for controlling the Kreislaufmahlstrom.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202010009150U DE202010009150U1 (en) | 2010-06-16 | 2010-06-16 | Kreislaufmahlanlage with integrated buffer |
PCT/EP2011/057303 WO2011157482A1 (en) | 2010-06-16 | 2011-05-06 | Closed-circuit grinding plant having an integrated buffer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2582455A1 true EP2582455A1 (en) | 2013-04-24 |
EP2582455B1 EP2582455B1 (en) | 2014-03-19 |
Family
ID=42664597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11718380.6A Active EP2582455B1 (en) | 2010-06-16 | 2011-05-06 | Closed-circuit grinding plant having an integrated buffer |
Country Status (8)
Country | Link |
---|---|
US (1) | US20130082127A1 (en) |
EP (1) | EP2582455B1 (en) |
CN (1) | CN102821863B (en) |
BR (1) | BR112012022435A2 (en) |
DE (1) | DE202010009150U1 (en) |
DK (1) | DK2582455T3 (en) |
RU (1) | RU2568129C2 (en) |
WO (1) | WO2011157482A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011102677A1 (en) | 2011-05-28 | 2012-11-29 | Khd Humboldt Wedag Gmbh | Method of producing microcracks in ore |
FR2986445B1 (en) * | 2012-02-08 | 2014-02-21 | Vicat | INTEGRAL PRESS VENTILATED |
WO2013156083A1 (en) * | 2012-04-20 | 2013-10-24 | Metso Minerals (Sweden) Ab | Feeder aparatus and method for feeding material to a high pressure roller crusher |
DE102012109644B4 (en) * | 2012-10-10 | 2016-02-11 | Thyssenkrupp Industrial Solutions Ag | grinding plant |
KR101504567B1 (en) * | 2014-07-16 | 2015-03-30 | 민원 | Manufacturing apparatus of recycled aggregate by use of cone crusher equipped with uniform quantity supply system and manufacturing method thereof |
CN104549700A (en) * | 2014-12-17 | 2015-04-29 | 河南广进塑业有限公司 | Circular grinding equipment |
DE102016006610A1 (en) * | 2016-06-02 | 2017-12-07 | Khd Humboldt Wedag Gmbh | Schiffskreislaufmahlanlage |
CN105964383A (en) * | 2016-07-13 | 2016-09-28 | 赵云辉 | Completely sealed slag discharging system of coal mill with top-mounted motor |
CN107377181A (en) * | 2017-07-13 | 2017-11-24 | 安徽金日盛矿业有限责任公司 | A kind of iron ore pulverizer import buffer unit |
CN110180624A (en) * | 2019-07-18 | 2019-08-30 | 江苏新业重工股份有限公司 | It is a kind of to crush thorough powder roll squeezer |
CN111570053A (en) * | 2020-04-22 | 2020-08-25 | 中国恩菲工程技术有限公司 | Grinding process technological method and grinding process technological equipment |
CN111804419B (en) * | 2020-06-16 | 2022-02-01 | 马鞍山采石矶涂料有限公司 | Grinding device capable of automatically returning materials |
CN114345484B (en) * | 2022-01-19 | 2023-07-14 | 谭佳沅 | Raw material crushing device of denitration catalyst and operation method thereof |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3305339A1 (en) * | 1983-02-17 | 1984-08-23 | Klöckner-Humboldt-Deutz AG, 5000 Köln | METHOD AND DEVICE FOR CONTINUOUS PRESSURE REDUCTION SPROEDEN GROSSGUTES |
SU1477474A1 (en) * | 1987-03-10 | 1989-05-07 | Липецкое Специализированное Проектно-Конструкторское Технологическое Бюро Всесоюзного Научно-Производственного Объединения "Союзавтоматстром" | Method of controlling desintegrating process in a closed cycle mill |
SU1678454A1 (en) * | 1989-04-11 | 1991-09-23 | Ленинградский горный институт им.Г.В.Плеханова | Method for autmatic control of wet grinding machine with closed cycle |
DE3920005A1 (en) * | 1989-06-20 | 1991-01-03 | Kloeckner Humboldt Deutz Ag | PLANT FOR CRUSHING OR GRINDING SPROEDEM GOODS AND METHOD FOR OPERATING SUCH A PLANT |
ES2064245B1 (en) * | 1991-12-06 | 1997-10-16 | Standart 90 | MULTI-PURPOSE METHOD AND APPARATUS FOR GRINDING SOLID MATERIAL. |
DE4337215A1 (en) * | 1993-10-30 | 1995-05-04 | Kloeckner Humboldt Deutz Ag | Circulating grinding plant |
DE4443479A1 (en) * | 1994-12-07 | 1996-06-13 | Kloeckner Humboldt Deutz Ag | Circular grinding plant |
DE19757431A1 (en) * | 1997-12-23 | 1999-06-24 | Kloeckner Humboldt Wedag | Method for milling chopped grain with twin high pressure rollers and sieve by recirculating the granules |
US6467707B1 (en) * | 2000-10-05 | 2002-10-22 | Robert M. Williams | Control logic for use in controlling grinding mill systems |
DE10221739A1 (en) * | 2002-05-16 | 2003-12-04 | Kloeckner Humboldt Wedag | Circular grinding plant with mill and sifter |
DE10336801B4 (en) * | 2003-08-11 | 2015-02-12 | Thyssenkrupp Industrial Solutions Ag | Process and plant for grinding iron ore or iron ore concentrate |
DE102008019830B4 (en) * | 2008-04-11 | 2019-01-24 | Khd Humboldt Wedag Gmbh | Circulation meter with external risers |
CN101524654A (en) * | 2009-04-07 | 2009-09-09 | 张世洪 | Automatic cycle crusher |
-
2010
- 2010-06-16 DE DE202010009150U patent/DE202010009150U1/en not_active Expired - Lifetime
-
2011
- 2011-05-06 CN CN201180015315.8A patent/CN102821863B/en active Active
- 2011-05-06 US US13/703,531 patent/US20130082127A1/en not_active Abandoned
- 2011-05-06 EP EP11718380.6A patent/EP2582455B1/en active Active
- 2011-05-06 BR BR112012022435A patent/BR112012022435A2/en not_active IP Right Cessation
- 2011-05-06 WO PCT/EP2011/057303 patent/WO2011157482A1/en active Application Filing
- 2011-05-06 RU RU2012146422/13A patent/RU2568129C2/en active
- 2011-05-06 DK DK11718380.6T patent/DK2582455T3/en active
Non-Patent Citations (1)
Title |
---|
See references of WO2011157482A1 * |
Also Published As
Publication number | Publication date |
---|---|
RU2012146422A (en) | 2014-05-10 |
EP2582455B1 (en) | 2014-03-19 |
DK2582455T3 (en) | 2014-06-16 |
WO2011157482A1 (en) | 2011-12-22 |
CN102821863A (en) | 2012-12-12 |
US20130082127A1 (en) | 2013-04-04 |
DE202010009150U1 (en) | 2010-08-26 |
BR112012022435A2 (en) | 2016-07-05 |
CN102821863B (en) | 2014-10-29 |
RU2568129C2 (en) | 2015-11-10 |
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