WO2012159894A2 - Cylindre broyeur et broyeur à cylindres haute pression - Google Patents

Cylindre broyeur et broyeur à cylindres haute pression Download PDF

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Publication number
WO2012159894A2
WO2012159894A2 PCT/EP2012/058668 EP2012058668W WO2012159894A2 WO 2012159894 A2 WO2012159894 A2 WO 2012159894A2 EP 2012058668 W EP2012058668 W EP 2012058668W WO 2012159894 A2 WO2012159894 A2 WO 2012159894A2
Authority
WO
WIPO (PCT)
Prior art keywords
profile body
grinding roller
edge regions
profile
grinding
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.)
Ceased
Application number
PCT/EP2012/058668
Other languages
German (de)
English (en)
Other versions
WO2012159894A3 (fr
Inventor
Heinz SCHRÖDER
Egbert Burchardt
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
ThyssenKrupp Polysius AG
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 ThyssenKrupp Polysius AG filed Critical ThyssenKrupp Polysius AG
Publication of WO2012159894A2 publication Critical patent/WO2012159894A2/fr
Publication of WO2012159894A3 publication Critical patent/WO2012159894A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/30—Shape or construction of rollers
    • B02C4/305—Wear resistant rollers

Definitions

  • the invention relates to a grinding roll for a high-pressure roll mill with atrenproeuropa ist, which consists of a plurality of spaced apart on the roll surface, wear-resistant profile bodies and is provided both in a central region and in two adjacent edge regions of the grinding roller.
  • the invention further relates to a high-pressure roller mill with two such, driven in opposite directions and forming a nip between them grinding rollers.
  • roller bodies are known for example from DE 197 09 263 AI and DE 103 35 115 AI.
  • the profile body are usually formed by hard metal pins, which are held in corresponding holes of the roller body.
  • the profile body are arranged on the roller body with distance from each other, wherein in the grinding operation between the profile bodies an autogenous
  • Good bed roller mill with a surface profiling, which consists of a variety of on the roll surface with distance from each other, outwardly projecting, wear-resistant profile bodies.
  • a surface profiling which consists of a variety of on the roll surface with distance from each other, outwardly projecting, wear-resistant profile bodies.
  • No. 5,269,477 A discloses a roll for a roll press with a surface profiling, which consists of a multiplicity of protruding profiled bodies, it being possible to provide differently shaped profiled bodies in the edge regions.
  • the used in practice pens or nubs usually have a diameter of 12 to 30 mm, and the pin lengths are depending on the expected wear 30 to 100 mm.
  • the pins are also cylindrical in shape and have a flat head, wherein the
  • Transition region between the head and shaft for manufacturing reasons has a small radius or a slope of 1 to 2 mm.
  • this object is achieved by the features of claim 1 or with respect to a high-pressure roller press with the grinding roller according to the invention by the features of claim 10.
  • the grinding roller according to the invention for a high-pressure roller mill has atrenproeuropabericht with a plurality of spaced apart on the roller surface, wear-resistant profile bodies, wherein the surface profiling is provided both in a central region and in two adjacent edge regions of the grinding roller, so that in the edge regions and autogenous wear protection is formed in the middle area.
  • the number of profile body per unit area in the edge regions is greater than in the middle region and the free space between the profile bodies in the Edge regions is at least 15%, preferably more than 25%, smaller than the free space between the profile bodies in the middle region.
  • the “free space” is the space between the profile bodies in new condition of the grinding roller before the material to be crushed between the profile bodies.
  • edge regions are preferably designed such that they each have a width of
  • the hardness of the profile body in the edge regions is at least partially lower than the hardness of the profile body in the middle region.
  • Edge areas up to 10% less than the hardness of the profile body in the middle area are provided in the edge regions, wherein the profiled bodies, which are arranged closer to the center region, are at least partially harder than the profiled bodies placed closer to the edge of the grinding roller.
  • the profile body are expediently pin-shaped. At least the end region of the profile body projecting from the roll surface, preferably the entire profile body, consists of a composite material with metal carbide and / or of a ceramic composite material.
  • the profiled bodies arranged at the edge region can be embodied differently in terms of their length and / or shape and / or diameter in relation to the profiled bodies arranged in the middle region, in order to further improve the maintenance of the autogenous wear protective layer in the edge regions.
  • Profile body may in particular have a rounded and / or beveled profile body head.
  • the rounded and / or chamfered areas protrude out of the autogenous wear protection layer that forms, which not only improves the grip of the roller body, but also the outflow of the material over the
  • FIG. 1 is a schematic plan view of a high-pressure roller mill
  • Fig. 2 is a sectional view of a grinding roller
  • Fig. 3 is a sectional view of the grinding roller with rounded profile bodies according to a first embodiment
  • Fig. 4 is a sectional view of the grinding roller with rounded profile bodies according to a second embodiment.
  • the high-pressure roller mill shown in FIGS. 1 and 2 has two grinding rollers 1, 2 driven in opposite directions and forming a grinding gap 3 between them. They consist of a roller body 4, which is provided with atrenproeuropamaschine arranged with a plurality of spaced apart from the roller surface 5, wear-resistant
  • Profile bodies 6 is formed.
  • the profile bodies are provided both in a middle region M and in two adjacent edge regions R of the grinding rolls 1, 2.
  • the edge regions R each have a width of at least 10% to a maximum of 30% of the total width of the grinding roller.
  • the profile body 6 have a much higher hardness than the roller body 4. The hardness range of
  • Profile body 6 should suitably be in the range of 900 to 1600 HV (Vicard hardness).
  • the number of profile body 6 per unit area is greater in the edge regions R than in the middle region M.
  • Edge regions R is at least 15%, preferably more than 25% smaller than the free space between the profile bodies 6 in the center region M.
  • the hardness of the profile body 6 in the edge regions less than the hardness of the profile body in the middle region M can be selected.
  • some of the profile body in the edge regions may have up to 10% lower hardness.
  • the profile body 6 are formed substantially pin-shaped, wherein as a material in particular a composite material
  • Metal carbide and / or is made of a ceramic composite material are made of a ceramic composite material.
  • the Grinding roller 1 further has at its edge special edge protection elements 8, which form a closed wear ring over the circumference of the grinding roller 1 and consist of a plurality of segments.
  • the grinding roller 2 shows the variant without such a special edge protection.
  • two identically designed grinding rollers are used, which optionally have both edge protection elements 8 or both waive this.
  • the profile body does not protrude from the autogenous wear protection layer, so that forms a relatively smooth and less grippy surface. In this way, it may happen that the material is drawn in worse, resulting in a lower performance or a lower throughput compared to profiled roller surfaces.
  • a profile body 6 ' is proposed, which is formed from the roll surface outstanding part as a rounded and / or beveled profile body head 6'a.
  • the length L of the profile body head 6'a corresponds to the entire, protruding from the roll surface 5 length of the profile body 6 '.
  • the profile body head 6'a is provided here only in the region of the edge with a rounding 6'b, which extends from a flat end face 6'c to the roll surface 5.
  • an autogenous wear protection layer 7 of material to be comminuted between the profile bodies 6 ' is formed after a very short time.
  • the wear protection layer does not extend to the end face 6'c, but rather has only a thickness d which is smaller than the length L of the profile body head. In this way it is ensured that the profile body 6 'always protrude with a part of the autogenous wear protection layer 7 in the further operation of the grinding roller. In the experiments underlying the invention has been shown that this effect occurs only to a significant extent, when the length of the rounded profile body head 6'a at least 50% of the total, protruding from the roller body 4 length of the profile body 6 '.
  • This embodiment forms during operation of the grinding roller during operation a wear protection layer 7 with a slightly smaller thickness, so that the profile body

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Abstract

L'invention concerne un cylindre broyeur pour un broyeur à cylindres haute pression, comprenant un profilage superficiel doté d'une pluralité de corps profilés résistants à l'usure et mutuellement espacés sur la surface des cylindres, le profilage superficiel étant prévu aussi bien dans une zone centrale que dans deux bordures adjacentes du cylindre broyeur de manière à former dans les bordures et dans la zone centrale une protection autogène contre l'usure. Le nombre de corps profilés par unité de surface des bordures est supérieur à celui de la zone centrale, et l'espace libre situé entre les corps profilés des bordures est inférieur d'au moins 15%, de préférence de plus de 25%, à celui de l'espace libre situé entre les corps profilés de la zone centrale.
PCT/EP2012/058668 2011-05-25 2012-05-10 Cylindre broyeur et broyeur à cylindres haute pression Ceased WO2012159894A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011102386.4 2011-05-25
DE201110102386 DE102011102386C5 (de) 2011-05-25 2011-05-25 Mahlwalze sowie eine Hochdruck-Walzenmühle

Publications (2)

Publication Number Publication Date
WO2012159894A2 true WO2012159894A2 (fr) 2012-11-29
WO2012159894A3 WO2012159894A3 (fr) 2013-02-07

Family

ID=45999186

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/058668 Ceased WO2012159894A2 (fr) 2011-05-25 2012-05-10 Cylindre broyeur et broyeur à cylindres haute pression

Country Status (2)

Country Link
DE (1) DE102011102386C5 (fr)
WO (1) WO2012159894A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2794108A4 (fr) * 2011-12-21 2015-12-09 Smidth As F L Dispositif d'insert pour une surface d'usure de rouleau
CN110124791A (zh) * 2019-06-25 2019-08-16 国电龙源节能技术有限公司 磨煤机磨辊

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011120178C5 (de) * 2011-12-06 2016-04-14 Khd Humboldt Wedag Gmbh Mahlwalze mit in die Oberfläche eingesetzten Hartkörpern
CN104525309B (zh) * 2014-12-30 2017-07-11 成都建筑材料工业设计研究院有限公司 抗磨密排装甲辊面
DE102016200911A1 (de) * 2016-01-22 2017-07-27 Thyssenkrupp Ag Verschleißschutzelement für eine Zerkleinerungseinrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5269477A (en) 1991-05-28 1993-12-14 Kloeckner-Humboldt-Deutz Ag Wear-resistant grinding drum for employment in roller machines, particularly in high-pressure roll presses
DE19709263A1 (de) 1997-03-06 1998-09-10 Krupp Polysius Ag Walze
DE10137131A1 (de) 2001-07-30 2003-02-13 Polysius Ag Oberflächenporfilierung für die Walze einer Hochdruck-Gutbettwalzenmühle
DE10335115A1 (de) 2003-07-31 2005-02-24 Polysius Ag Mahlwalze

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU88246A1 (fr) * 1993-04-14 1994-12-01 Magotteaux Int Procédé de fabrication de pièces d'usure composite et pièces réalisées par ce procédé
DE102007018090A1 (de) * 2007-04-17 2008-10-23 Polysius Ag Mahlwalze sowie Verfahren zur Wiederaufarbeitung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5269477A (en) 1991-05-28 1993-12-14 Kloeckner-Humboldt-Deutz Ag Wear-resistant grinding drum for employment in roller machines, particularly in high-pressure roll presses
DE19709263A1 (de) 1997-03-06 1998-09-10 Krupp Polysius Ag Walze
DE10137131A1 (de) 2001-07-30 2003-02-13 Polysius Ag Oberflächenporfilierung für die Walze einer Hochdruck-Gutbettwalzenmühle
DE10335115A1 (de) 2003-07-31 2005-02-24 Polysius Ag Mahlwalze

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2794108A4 (fr) * 2011-12-21 2015-12-09 Smidth As F L Dispositif d'insert pour une surface d'usure de rouleau
CN110124791A (zh) * 2019-06-25 2019-08-16 国电龙源节能技术有限公司 磨煤机磨辊
CN110124791B (zh) * 2019-06-25 2023-10-13 国能龙源蓝天节能技术有限公司 磨煤机磨辊

Also Published As

Publication number Publication date
DE102011102386B3 (de) 2012-05-16
DE102011102386C5 (de) 2015-03-19
WO2012159894A3 (fr) 2013-02-07

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