US3869091A - Tube mill - Google Patents

Tube mill Download PDF

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Publication number
US3869091A
US3869091A US358686A US35868673A US3869091A US 3869091 A US3869091 A US 3869091A US 358686 A US358686 A US 358686A US 35868673 A US35868673 A US 35868673A US 3869091 A US3869091 A US 3869091A
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US
United States
Prior art keywords
grinding
partitions
lining
mill
chamber
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
US358686A
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English (en)
Inventor
Torben Enkegaard
Helge Carl Christian Kartman
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.)
FLSmidth and Co AS
Original Assignee
FLSmidth and Co AS
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 FLSmidth and Co AS filed Critical FLSmidth and Co AS
Application granted granted Critical
Publication of US3869091A publication Critical patent/US3869091A/en
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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
    • B02C17/22—Lining for containers
    • B02C17/225—Lining for containers using rubber or elastomeric material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S241/00—Solid material comminution or disintegration
    • Y10S241/30—Rubber elements in mills

Definitions

  • ABSTRACT A grinding mill for grinding a material charge comprising in combination, at least one grinding chamber, a lining of wear-resistant non-metallic resilient material, lifting means in the chamber for lifting and cascading material to be ground, and a plurality of spaced ring-shaped partitions within the chamber and config ured to increase the lifting action exerted by the mill on the material charge.
  • the present invention relates to improvements in tube mills of the type having at least one grinding chamber with a wear-resisting lining and lifter for lifting the material charge.
  • the wear-resisting non-metallic linings of the type disclosed may have either a smooth or a wavy surface and are frequently provided with lifters such as longitudinal bars or the like which are either formed as part of the lining or alternately, are embedded within the lining.
  • the present invention relates to a grinding mill for grinding a material charge which comprises a mill body having at least one grinding chamber in combination with a wear-resisting lining of non-metallic resilient material, and a plurality of substantially equidistant ringshaped partitions within the chamber.
  • the partitions are so configured as to serve to increase the lifting action exerted by the mill lining on the mill charge, while permitting the material charge to flow longitudinally therethrough without interruption.
  • the ring-shaped partitions serve to break this flow of material, without interrupting the transport thereof through the mill.
  • the partitions divide the grinding chamber into a number of sections and positively assist the lining in lifting and cascading the grinding bodies and the material.
  • a mill lin- I ing of either a rubber or plastic material is provided with lifting means for lifting and cascading the material to be ground.
  • Equally spaced ring-shaped partitions constructed either wholly or partially of a yielding material are provided, but these partitions are preferably constructed of the same material as the lining proper. The ring-shaped partitions are thus protected against abrasion in the same manner as the mill lining thereby eliminating the need for special attendance or maintenance as compared to that required by the lining.
  • a lining of rubber or plastics material may be utilized in combination with rings haped partitions constructed of a different material such as a metallic material.
  • the wear on the ring-shaped partitions may be less important consideration.
  • FIG. 1 is a cross-sectional view of the longitudinal section of the tube mill.
  • FIG. 2 is an enlarged section taken on the line 2-2 of FIG. 1.
  • FIG. 1 there is shown an improved tube mill in accordance with the present invention.
  • a mill body 1 is rotatably supported by hollow trunnions 2 and 3 in stationary bearings 6 and 7 which are mounted in the vertical support members. as shown.
  • An inlet opening 4 is provided for feeding material to be ground in the mill and an outlet opening 5 is provided for discharging the ground material.
  • a chute 8 directs the material charge into inlet opening 4.
  • the mill body has a grinding chamber 14 which is preferably substantially cylindrical as shown in FIG. 1,
  • a plurality of ring-shaped partitions 10 are positioned within the grinding chamber as shown and are attached to sole plates 11 which form integral portions of the lining.
  • the partitions are attached to sole plates 11 by being formed integrally therewith and the ring-shaped partitions are constructed of the same rubber or plastic material as that of the lining 9.
  • the sole plates 11 may alternately be in the form of substantially cylindrical separate ring-like members attached to the partitions 10.
  • FIG. 2 there is shown a representative ring-shaped partition 10 which has an open work configuration with a central opening and a plurality of rectangular openings or holes 12 which are intended to allow material to be ground to pass longitudinally through the mill as the mill body is rotated. It can be seen that the configuration of the partitions 10 as shown assist the lining substantially in lifting the material upwardly in the direction of rotation of the mill thereby providing additional cascading of the material charge.
  • the lining 9 of the mill also includes lifting bars 13 which are longitudinally positioned as shown and serve to lift and cascade the charge of material and grinding bodies in the chamber.
  • the mill shown in FIG. 1 has one grinding chamber 14 and a discharge chamber 15 separated from the grinding chamber by a dam ring 16 having means (not shown) for returning grinding bodies to the grinding chamber.
  • This type of discharge furthers the formation of pools of fluidized material in the grinding chamber, particularly in a dry grinding mill of this type.
  • the pool may tend to flow too rapidly through the mill due to the low lifting capacity of the rubber or plastic lining.
  • the ringshaped partitions effectively interrupt the flow and at the same time, improve the lifting capacity of the rubber or plastic lining.
  • a grinding mill for grinding a material charge which comprises a mill body having at least one grinding chamber, a lining of wear resistant non-metallic resilient material in said grinding chamber, lifting means in said grinding chamber mounted on the resilient lining for lifting and cascading the material to be ground, and a plurality of ring shaped partitions within said chamber, said partitions being substantially equally spaced along the axis of the mill and define at least a central opening and a plurality of openings arranged in a substantially circular pattern so as to provide additional lifting action on the material charge while permitting the material to pass therethrough without interruption in a substantiallylongitudinal direction.
  • each of said ring-shaped partitions comprises a solid core surrounded and covered with a resilient wearresistant non-metallic material.
  • each ring-shaped partition is constructed of a metallic material.
  • a grinding mill for grinding a material charge which comprises a mill body having at least one grinding chamber, a charge of grinding bodies, means in said grinding chamber to prevent the grinding bodies from exiting therefrom, a lining of wear resistant nonmetallic resilient material in said grinding chamber, lifting means in said grinding chamber mounted on the resilient lining for lifting and cascading the grinding bodies and the material to be ground, and a plurality of ring shaped partitions within said chamber, said partitions being substantially equally spaced along the axis of the mill and defining at least a central opening and a plurality of openings spaced from the central opening and arranged in a substantially circular pattern so as to provide additional lifting action on the material charge while permitting the material and grinding bodies to pass therethrough without interruption in a substantially longitudinal direction.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US358686A 1972-05-10 1973-05-08 Tube mill Expired - Lifetime US3869091A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2188472A GB1373285A (en) 1972-05-10 1972-05-10 Tube mills

Publications (1)

Publication Number Publication Date
US3869091A true US3869091A (en) 1975-03-04

Family

ID=10170439

Family Applications (1)

Application Number Title Priority Date Filing Date
US358686A Expired - Lifetime US3869091A (en) 1972-05-10 1973-05-08 Tube mill

Country Status (7)

Country Link
US (1) US3869091A (xx)
BR (1) BR7303359D0 (xx)
CA (1) CA983456A (xx)
FR (1) FR2184009B1 (xx)
GB (1) GB1373285A (xx)
IE (1) IE39414B1 (xx)
ZA (1) ZA732628B (xx)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6412714B1 (en) * 1999-08-16 2002-07-02 Anthony Witsken Apparatus for mixing, grinding, dispersing or emulsifying
US20100213299A1 (en) * 2006-03-08 2010-08-26 Hilmar Von Campe Method for recovering and/or recycling material
US20110220747A1 (en) * 2007-08-29 2011-09-15 Polysius Ag Tube mill with internal lining of epoxy material
US20140008473A1 (en) * 2011-03-31 2014-01-09 Daito Doboku, Ltd. Mill
US20160030944A1 (en) * 2014-08-04 2016-02-04 General Electric Company Attritor

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1309212A (en) * 1919-07-08 Roller-mill
US2670140A (en) * 1950-10-14 1954-02-23 Pennsylvania Crusher Co Lifting shelf
US2909335A (en) * 1953-08-10 1959-10-20 Trelleborgs Gummifabriks Ab Resilient and bonded drum lining
US3269668A (en) * 1963-11-27 1966-08-30 Newton L Hall Ball mill with tensional and wear-resistant linings
US3378209A (en) * 1965-08-30 1968-04-16 Galigher Company Corrosion-proof lining for metallurgical grinding mills
US3467319A (en) * 1966-08-25 1969-09-16 John F Rampe Liquid-cooled processing vessel
US3529781A (en) * 1966-06-23 1970-09-22 Smidth & Co As F L Rotary grinding mill
US3586249A (en) * 1967-12-07 1971-06-22 Smidth & Co As F L Grinding mineral materials

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE616772C (xx) *
FR1168412A (fr) * 1957-01-14 1958-12-08 Trelleborgs Gummifabriks Ab Garnissage résistant à l'usure, par exemple pour les broyeurs à boulets et les laminoirs à tubes
GB1284053A (en) * 1971-03-23 1972-08-02 Smidth & Co As F L Improvements in tube mills

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1309212A (en) * 1919-07-08 Roller-mill
US2670140A (en) * 1950-10-14 1954-02-23 Pennsylvania Crusher Co Lifting shelf
US2909335A (en) * 1953-08-10 1959-10-20 Trelleborgs Gummifabriks Ab Resilient and bonded drum lining
US3269668A (en) * 1963-11-27 1966-08-30 Newton L Hall Ball mill with tensional and wear-resistant linings
US3378209A (en) * 1965-08-30 1968-04-16 Galigher Company Corrosion-proof lining for metallurgical grinding mills
US3529781A (en) * 1966-06-23 1970-09-22 Smidth & Co As F L Rotary grinding mill
US3467319A (en) * 1966-08-25 1969-09-16 John F Rampe Liquid-cooled processing vessel
US3586249A (en) * 1967-12-07 1971-06-22 Smidth & Co As F L Grinding mineral materials

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6412714B1 (en) * 1999-08-16 2002-07-02 Anthony Witsken Apparatus for mixing, grinding, dispersing or emulsifying
US20100213299A1 (en) * 2006-03-08 2010-08-26 Hilmar Von Campe Method for recovering and/or recycling material
US8118248B2 (en) * 2006-03-08 2012-02-21 Schott Solar Ag Method for recovering and/or recycling material
US20110220747A1 (en) * 2007-08-29 2011-09-15 Polysius Ag Tube mill with internal lining of epoxy material
US8608094B2 (en) * 2007-08-29 2013-12-17 Polysius Ag Tube mill with internal lining of epoxy material
US20140008473A1 (en) * 2011-03-31 2014-01-09 Daito Doboku, Ltd. Mill
US9427742B2 (en) * 2011-03-31 2016-08-30 Daito Doboku, Ltd. Mill
US20160030944A1 (en) * 2014-08-04 2016-02-04 General Electric Company Attritor

Also Published As

Publication number Publication date
GB1373285A (en) 1974-11-06
FR2184009B1 (xx) 1977-02-11
CA983456A (en) 1976-02-10
FR2184009A1 (xx) 1973-12-21
ZA732628B (en) 1974-03-27
IE39414B1 (en) 1978-10-11
IE39414L (en) 1973-11-10
BR7303359D0 (pt) 1974-06-27

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