EP0801985A1 - Presse à rouleaux à haute pression pour le broyage par pression de matériau granulé - Google Patents
Presse à rouleaux à haute pression pour le broyage par pression de matériau granulé Download PDFInfo
- Publication number
- EP0801985A1 EP0801985A1 EP97104558A EP97104558A EP0801985A1 EP 0801985 A1 EP0801985 A1 EP 0801985A1 EP 97104558 A EP97104558 A EP 97104558A EP 97104558 A EP97104558 A EP 97104558A EP 0801985 A1 EP0801985 A1 EP 0801985A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller press
- pressure roller
- press according
- housing
- ring
- 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
- 239000008187 granular material Substances 0.000 title description 2
- 238000003801 milling Methods 0.000 title 1
- 239000000463 material Substances 0.000 claims abstract description 117
- 238000012216 screening Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000000227 grinding Methods 0.000 description 19
- 239000007789 gas Substances 0.000 description 14
- 238000003825 pressing Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 3
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
Images
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
- 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
- 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
- B02C17/002—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 rotary cutting or beating elements
-
- 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
- B02C23/24—Passing gas through crushing or disintegrating zone
- B02C23/30—Passing gas through crushing or disintegrating zone the applied gas acting to effect material separation
Definitions
- the invention relates to a high-pressure roller press for pressure comminution of granular good material, with two rollers driven in opposite directions and separated from one another by a roller gap.
- the high-pressure pressure in the regrind partly leads to particle destruction, partly to the creation of cracks inside the particles and is manifested itself in the formation of agglomerates (so-called Schülpen), which can be deglomerized or dissolved with comparatively little energy expenditure, so that this type of comminution overall is characterized by a comparatively low specific energy requirement.
- Schülpen agglomerates
- a lowering of the pressing pressure used in the material bed comminution in the roller gap of the roller press has high grinding cycle rates of the roller press or large quantities circulating in particular in the so-called finished and partially finished grinding, in which the material bed roller press works with a classifier or a classifying device in the circuit Schülpen material result, associated with a considerable effort to transport the press discharge material and the classifier size from the roller press discharge via the classifier to the press feed shaft or directly to the press feed shaft z.
- the invention is therefore based on the object of creating a high-pressure material bed comminution high-pressure roller press in which the problem of large material recirculation or high circulation rates, caused in particular due to reduced roller pressing pressures, is solved with little mechanical effort, and in which the material material circulation and depending on Even the viewing process is integrated in a compact unit.
- the two rollers are surrounded by a housing consisting of two fixed, i.e. H. non-rotating side end walls, between which a rotatably mounted material delivery ring, which can be set in rotation by a rotary drive, is arranged for an internal material cycle.
- This rotatably mounted material conveyor ring of the housing rotates with z. B. about 40 to 80% of the critical speed, d. H. depending on the design of the lifting elements in the conveyor ring, the ring takes the press material to be discharged (before and after the upper apex of the ring) and allows this good material to fall into the nip from above, which results in the internal good material cycle.
- Bucket elevators or other space-consuming conveying elements for transporting the press discharge material to the press inlet are eliminated. According to the invention, a multiple internal material cycle with repeated loading of the good material on the material bed is achieved in the smallest space and with little mechanical effort. According to the invention, even relatively high material cycle loads, caused by reduced roller pressing pressures with regard to the increased stability of the rollers, can be handled without any problems.
- the inlet for the fresh material and, if applicable, for the size of a classifier which may be connected downstream of the rotating housing is carried out through at least one, preferably through two openings which are arranged opposite one another in the housing end walls.
- the material discharge from the internal material cycle takes place through an opening in the end wall of the housing to the side below the nip through to the outside, e.g. B. by means of a Gutmaterialurginge, vibrating trough, etc.
- the fresh material is not placed centrally from above, but laterally from one or both End faces.
- the material to be ground is circulated in the rotatably mounted material conveyor ring, it is also moved axially within this material conveyor ring to the opposite end wall of the housing side and is discharged through the discharge opening if the material entry occurs on one side or if the material enters from both sides. moved in the axial direction to the roller center, and in this case also carried out from the roller center, for. B. by a pipe conveyor trough. Fresh air for cooling or hot gas for drying can be flowed through the upper part of the rotating housing.
- a screening of the material thrown off the material conveyor ring is achieved before it enters the nip for further grinding.
- the material can also be discharged entirely with the gas flow.
- the selected gas speed in the rotary housing determines the fineness of the pneumatically discharged fine material.
- the fines can e.g. B. separated in cyclones and further ground (z. B. in a ball mill), or it is fed to an external classifier, where the separation into finished goods and semolina takes place. These grains are fed back into the roller gap via the opening (s) in the housing end walls.
- This externally performed viewing process to achieve higher finenesses can also be carried out in the rotating housing of the high-pressure roller press by means of a horizontally positioned rod basket of a rod basket classifier, which is arranged above the roller press.
- the material discharged from the material discharge ring is partly captured by the gas stream that enters through several openings in the end walls and fed to the rod basket, and partly fed directly to the rod basket.
- the fine material with the desired fineness set by the speed of the rod basket and the gas velocity, flows through the rod basket and begins one or more openings in the end walls together with the gas flow.
- the fine material is separated in cyclones or in a filter.
- the rotation of the material conveyor ring 16 takes place via its cylindrical jacket z. B. by the driven bearing roller 15.
- the bearing blocks 17, 18 etc. of the two rollers 10, 11 arranged outside the fixed side end walls 12, 13 of the housing and mounted in a machine frame, not shown here.
- the inner wall of the rotatably mounted, rotatable material conveyor ring 16 can be provided with lifting elements 19 for the internal material cycle.
- the material conveyor ring 16 rotates at a speed that is below the so-called critical speed, i. That is, the ring 16 takes the press discharge material, which is shown schematically in FIG. 1 with 20, up to the upper vertex of the ring 16 and drops this material material from above into the nip between the two rollers 10, 11.
- the material can also be ejected behind the upper apex by suitable design of the lifting elements 19 and choice of the speed of the conveyor ring 16.
- the rotary drive of the conveyor ring 16 is preferably designed to be speed-controllable. It would also be possible to rotate the conveyor ring 16 above the critical speed and to strip the good material from the conveyor ring in the region of the upper vertex.
- the material inlet for the fresh material 21 and for any recirculated semolina of a downstream classifier takes place through one or more openings 22 in one or in both housing end walls 12, 13 from the side, and the material outlet 23 for discharging the material to be ground takes place from the internal grinding circuit through an opening 24 in the housing end wall 12, 13 laterally below the nip by means of a good material chute or vibrating trough 25 [Fig. 2], or pipe conveyor trough 25 [Fig. 4], and / or pneumatically through one or more discharge openings or discharge elbows 27.
- the discharge element 25 could also be arranged above the press rollers.
- the fresh material feed is therefore not carried out centrally from above onto the nip, but laterally from one or both end faces of the roller.
- the good material pre-ground after passing through the nip is transported upwards with the material conveyor ring 16 and fed back to the grinding rollers for further grinding or repeated high pressure pressing.
- the ground material also moves in the axial direction to the opposite end of the roll or, in the case of material feed on both sides, towards the center, especially if a bed of material builds up above the roll gap, and after multiple high-pressure pressings, is discharged via the discharge element 25, either from the edge or from the center of the roll discharged from the machine.
- One or both side end walls 12, 13 of the housing can have one or more openings 29 for the entry of gas flows 26 and one or more openings 27 for the discharge of the gas flows 28.
- the housing surrounding the two press rolls 10, 11 can be acted upon either with fresh air or with hot gases, so the regrind can be cooled or dried.
- Already released fine material is sifted out by the air flowing transversely to the upper material material discharge and discharged from the housing together with the flow 28 to a separator or classifier, while the coarse material remains in the housing.
- the gas velocity in the housing can be increased to such an extent that the material escapes exclusively with the gas flow.
- a bar basket 30 which is arranged horizontally above the press rolls and which, for. B. is driven by a speed-controllable electric motor via a shaft 31, a dynamic sighting can already be achieved within the press housing.
- the press housing is also the classifier housing. The grains deposited on the rod basket 30 are directly transferred to the rollers underneath 10, 11 fed and further ground.
- a press housing designed in this way with a rotating conveyor ring and integrated rod basket only the fine material flowing through the rod basket 30 and the elbow (s) 27 has to be separated off in cyclones or in a filter.
- roller press there is also the possibility in the roller press according to the invention to arrange the good entry to the material conveyor ring 16 also below the rollers 10, 11, and the mechanical material discharge by means of a slide or vibration conveyor 25 can also be arranged above the rollers.
- the high-pressure roller press according to the invention with the rotatably mounted material feed ring 16 can be used for pre-grinding.
- the good material 23 discharged from the pre-grinding with internal material circulation is in a second grinding stage, for. B. ball mill 31 further.
- Fig. 6 shows the partially finished grinding in the high pressure roller press with internal material circulation and with integrated classifying device.
- the discharged good material 23 is separated from the gas stream in a cyclone separator 32 and z. B. in the ball mill 31 further.
- Fig. 7 shows the finished grinding in the high-pressure roller press with internal material circulation and with integrated classifying device.
- the finished product 33 is immediately separated off in the cyclone separator 32.
- FIG. 8 shows the partially finished grinding in the high-pressure roller press according to the invention with external classifier 34, with mechanical and / or pneumatic external material circulation, cyclone separator 32 and ball mill 31.
- FIG. 9 shows the finished grinding in the roll press according to the invention with external classifier 34 , with mechanical and / or pneumatic external material circulation and with cyclone separator 32 for separating the finished goods 33.
- the regrind 23 discharged from the roller press is fed to the sifter 34 or other classifier, from which the coarse material (meal) in an outer grinding circuit 35 can be fed back to the roller press according to the invention for further grinding, the ground material 23 being able to be fed to the sifter 34 either mechanically via the conveyor 25 and / or pneumatically via the discharge elbow (s) 27.
- the good material circulation takes place exclusively with the material conveyor ring 16, which can be rotated.
- the grains separated from the integrated sifter bar basket 30 fall directly into the underlying nip.
- the regulation of the fresh material supply 21 to the high-pressure roller press according to the invention can advantageously take place as a function of the power consumption of the drive of the material conveyor ring 16.
- the invention can also be used for roller crushers or roller mills which generally operate with a lower roller contact pressure than roller presses.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19615479 | 1996-04-19 | ||
DE19615479 | 1996-04-19 | ||
DE19630687A DE19630687A1 (de) | 1996-04-19 | 1996-07-30 | Hochdruck-Walzenpresse zur Druckzerkleinerung körnigen Gutmaterials |
DE19630687 | 1996-07-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0801985A1 true EP0801985A1 (fr) | 1997-10-22 |
EP0801985B1 EP0801985B1 (fr) | 2001-05-30 |
Family
ID=26024894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97104558A Expired - Lifetime EP0801985B1 (fr) | 1996-04-19 | 1997-03-18 | Presse à rouleaux à haute pression pour le broyage par pression de matériau granulé |
Country Status (3)
Country | Link |
---|---|
US (1) | US5918823A (fr) |
EP (1) | EP0801985B1 (fr) |
DK (1) | DK0801985T3 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0887106A1 (fr) * | 1997-06-23 | 1998-12-30 | KHD Humboldt-Wedag AG | Dispositif de broyage en circuit fermé avec une presse à rouleaux à haute pression et un séparateur |
DE10259541A1 (de) * | 2002-12-19 | 2004-07-08 | Khd Humboldt Wedag Ag | Kreislaufmahleinrichtung mit Mühle und Sichter |
CN110882811A (zh) * | 2019-12-12 | 2020-03-17 | 江苏吉能达环境能源科技有限公司 | 一种多级粉磨超细粉生产设备 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19948727A1 (de) * | 1999-10-09 | 2001-04-12 | Kloeckner Humboldt Wedag | Kreislaufmahleinrichtung mit Hochdruck-Walzenmühle und Sichter |
DE10332062A1 (de) * | 2003-07-11 | 2005-01-27 | Carl Zeiss Jena Gmbh | Anordnung im Beleuchtungsstrahlengang eines Laser-Scanning-Mikroskopes |
US8632028B2 (en) | 2010-09-02 | 2014-01-21 | Flsmidth A/S | Device for the comminution of material |
DE102014014945A1 (de) * | 2014-10-09 | 2016-04-14 | Micro Impact Mill Limited | Vorrichtung und Verfahren zum Erzzerkleinern mit einer hydraulischen Federeinrichtung |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE123935C (fr) * | ||||
GB547181A (en) * | 1941-02-08 | 1942-08-17 | Albert Joshua Burrell | Reducing or crushing apparatus |
DE1295988B (de) * | 1963-10-21 | 1969-05-22 | Nordberg Manufacturing Co | Verfahren zum Regeln des Fuellungsgrades einer Trommelmuehle |
DE3518543A1 (de) * | 1985-05-23 | 1986-11-27 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Verfahren und einrichtung zur zerkleinerung und mahlung sproeden mahlgutes wie zum beispiel zementklinker, erz, kohle oder dergleichen |
DE9016588U1 (de) * | 1990-12-06 | 1991-06-27 | Unger, Günther, 5628 Heiligenhaus | Mahlsiebanlage |
WO1995017967A1 (fr) * | 1993-12-27 | 1995-07-06 | Italcementi S.P.A. | Broyeur tubulaire destine a broyer des matieres premieres naturelles et synthetiques, en particulier pour l'industrie du ciment |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2138715A (en) * | 1935-05-06 | 1938-11-29 | Paper & Ind Appliances Inc | Apparatus for treating paper pulp and the like |
US2552360A (en) * | 1945-01-10 | 1951-05-08 | Zichis Joseph | Method of and apparatus for dehydrating materials |
DE939301C (de) * | 1949-05-12 | 1956-02-16 | Arno Andreas | Vorrichtung zum Mahlen von Massenguetern |
US4052013A (en) * | 1976-03-08 | 1977-10-04 | Georgia-Pacific Corporation | Apparatus for shredding rubber tires and other scrap materials |
-
1997
- 1997-03-18 DK DK97104558T patent/DK0801985T3/da active
- 1997-03-18 EP EP97104558A patent/EP0801985B1/fr not_active Expired - Lifetime
- 1997-04-21 US US08/844,583 patent/US5918823A/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE123935C (fr) * | ||||
GB547181A (en) * | 1941-02-08 | 1942-08-17 | Albert Joshua Burrell | Reducing or crushing apparatus |
DE1295988B (de) * | 1963-10-21 | 1969-05-22 | Nordberg Manufacturing Co | Verfahren zum Regeln des Fuellungsgrades einer Trommelmuehle |
DE3518543A1 (de) * | 1985-05-23 | 1986-11-27 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Verfahren und einrichtung zur zerkleinerung und mahlung sproeden mahlgutes wie zum beispiel zementklinker, erz, kohle oder dergleichen |
DE9016588U1 (de) * | 1990-12-06 | 1991-06-27 | Unger, Günther, 5628 Heiligenhaus | Mahlsiebanlage |
WO1995017967A1 (fr) * | 1993-12-27 | 1995-07-06 | Italcementi S.P.A. | Broyeur tubulaire destine a broyer des matieres premieres naturelles et synthetiques, en particulier pour l'industrie du ciment |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0887106A1 (fr) * | 1997-06-23 | 1998-12-30 | KHD Humboldt-Wedag AG | Dispositif de broyage en circuit fermé avec une presse à rouleaux à haute pression et un séparateur |
DE10259541A1 (de) * | 2002-12-19 | 2004-07-08 | Khd Humboldt Wedag Ag | Kreislaufmahleinrichtung mit Mühle und Sichter |
CN110882811A (zh) * | 2019-12-12 | 2020-03-17 | 江苏吉能达环境能源科技有限公司 | 一种多级粉磨超细粉生产设备 |
CN110882811B (zh) * | 2019-12-12 | 2021-04-30 | 江苏吉能达环境能源科技有限公司 | 一种多级粉磨超细粉生产设备 |
Also Published As
Publication number | Publication date |
---|---|
DK0801985T3 (da) | 2001-08-06 |
US5918823A (en) | 1999-07-06 |
EP0801985B1 (fr) | 2001-05-30 |
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