US3604637A - End liner assembly for rotary mill or the like - Google Patents

End liner assembly for rotary mill or the like Download PDF

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Publication number
US3604637A
US3604637A US872294A US3604637DA US3604637A US 3604637 A US3604637 A US 3604637A US 872294 A US872294 A US 872294A US 3604637D A US3604637D A US 3604637DA US 3604637 A US3604637 A US 3604637A
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Prior art keywords
radially
tiers
liner
mill
liner assembly
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US872294A
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English (en)
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Richard E Sabaski
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Allis Chalmers Corp
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Allis Chalmers Corp
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Assigned to CONNECTICUT NATIONAL BANK THE, A NATIONAL BANKING ASSOCIATION AS TRUSTEE, WOODS KATHLEEN D., AS TRUSTEE reassignment CONNECTICUT NATIONAL BANK THE, A NATIONAL BANKING ASSOCIATION AS TRUSTEE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ALLIS-CHALMERS CORPORATION A DE CORP.
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    • 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

Definitions

  • the radially outer end of the pyramided tiers is supported on the shell plate of the mill or on a filler ring supported thereby.
  • the radially inner end of the pyramided tiers is engaged by a grinding pad(s) carried by a pinned liner member(s) or carried by another member(s) fixed with respect to the rotary mill, such as the discharge cone at the discharge end of the mill.
  • the grinding pads are precisely dimensioned to provide the proper radial compression on the pyramided tiers of liner members.
  • a supplemental clamping action on the liner assembly is provided by the lifter bars which are positioned between contiguous circumferentially spaced liner members in partially overlying clamping relation thereto.
  • a wedge may be inserted in the clearance space between the radially inner end of the pyramided tiers of liner members and the contiguous radially outer edge of the pinned liner or other stationary member.
  • PATENTEDSEPMIBII 3504637 SHEET 2 UF 3 Q A M m. Q Map M W QM M PATENTED SEPI 41971 SHEET 3 OF 3 LAWN 2) mm 7 8% I w 17M 2? C.
  • a further disadvantage of the prior art end liner construction is that in the prior art it was the practice to provide grinding pads on the individual wear plates or liner members constituting the end liner assembly. These grinding pads on-the plurality of individual liner members or wear plates were physically adjusted, as by grinding of the individual grinding pads, to ensure placement of the liner members into particular fitted or dimensioned locations.
  • an end liner assembly for a rotary mill or the like in which the wear plates or liner members at the feed end, or the grates and wear plates at the discharge end, are assembled in a plurality of radially compressed pyramided tiers in stacked relation to each other.
  • the radially outer end of the pyramided tiers is supported on the shell plate of the mill or on a filler ring supported thereby.
  • the radially inner end of the pyramided tiers is engaged by a grinding pad(s) carried by a pinned" liner member(s) or carried by another member(s),fixed with respect to the rotary mill, such as the discharge cone at the discharge end of the mill.
  • the grinding pads are precisely dimensioned to provide the proper radial compression on the pyramided tiers of liner members.
  • a supplemental clamping action on the liner assembly is provided by the lifter bars which are positioned between contiguous circumferentially spaced liner members in partially overlying clamping relation thereto.
  • a wedge means may be inserted in the clearance space between the radially inner end of the pyramided tiers of liner members and the contiguous radially outer edge of the pinned liner or other stationary member.
  • FIG. 1 is a view in longitudinal section of a grinding mill incorporating an end liner in accordance with the invention at both the feed end and at the discharge end of the grinding mill;
  • FIG. 2 is a view taken along line Il-Il of FIG. 1 showing the end liner assembly in accordance with the invention at the feed end of the grinding mill;
  • FIG. 3 is an enlarged view in longitudinal section, similar to the view shown in FIG. 1, of the feed end of the grinding mill;
  • FIG. 4 is a view taken along line IV-lV of FIG. 2;
  • FIG. 5 is a view similar to FIG. 4, of a modified mounting arrangement for the lifter bar;
  • FIG. 6 is a view taken along line VIVl of FIG. 2;
  • FIG. 7 is a view taken along line VII-VII of FIG. 1 showing the end liner assembly at the discharge end of the grinding mill;
  • FIG. 8 is a view similar to FIG. 6 but showing a modified embodiment of the invention.
  • FIG. 9 is a view similar to FIGS. 6 and 8 but showing another modified form of the invention.
  • a grinding mill generally indicated at 10 including a shell generally indicated at 12 comprising a cylindrical shell plate 14 to the respective opposite axial ends of which are rigidly attached shell flanges l6 and 16.
  • Shell flanges 16 and 16' have ribs 18 rigidly secured thereto or integral therewith.
  • a shell flange 16 is rigidly secured, as by bolts 20 and nuts 21 to the end plate or head 22 which is integral with the trunnion 24 upon which the mill I0 is supported for rotation by bearing 26.
  • the shell flange 16' is similarly secured to the end plate or head 22 at the discharge end of the mill.
  • the trunnion 24 at the left-hand of the view of FIG. 1 is hollow and constitutes As best seen in FIG. 2, a filler ring generally indicated at 36 v and comprising a plurality of circumferentially extending arcuate segments such as those indicated at 36a, 36b and 360 is positioned contiguous the radially inner surface of the cylindrical shell plate 14.
  • the inner surface of the mill is preferably suitably coated or covered with a rubberlike backing material indicated at 38.
  • Each of the filler ring segments such as 36a, 36b and 36c is provided on its radially outer surface with a plurality of circumferentially spaced steel pads 40 which are preferably welded to the radially outer surface of the filler ring segments.
  • the rubber backing material 38 is cut away at the locations of the steel pads 40 so that the radially outer surface of the respective steel pads is in direct abutting contact with the metal surface of shell plate 14.
  • the radially inner surface 42 of filler ring 36 provides a rigid foundation on which the liner sections or wear plates or the liner assembly are mounted.
  • a plurality of liner members or wear plates 44 such as those indicated at 44a-44i, in FIG. 2 are mounted on the radially inner surface of filler ring 36.
  • the liner members or wear plates 44 are made of a hard metal having good wearing characteristics. It will be noted that the liner members or wear plates 44a, 44b and 44c define one row of radially pyramided wear plates.
  • the liner members or wear plates 44d, 442 and 44f define another row of radially pyramided wear plates which abuts at the radially outer end thereof against the filler ring segment 36b, and which abuts at the radially inner end thereof against the grinding pad 50 of the pinned liner 48 which is rigidly anchored to end plate 22 of the grinding mill.
  • the wear plates or liner members 44g, 44h and 441' lie in a radial line in pyramided relation to each other, with the radially outer end of the radial line of wear plates just described abutting against the tiller ring segments 36b and 36c and with the radially inner end of the radial line of wear plates just described (that is the radially inner end of wear plate 441' abutting against the grinding pad 54 of the pinned liner 52 which is rigidly anchored to end plate 22.
  • each of the pinned liner members or wear plates such as 46, 48 and 52 is rigidly secured as by a pair of bolts 56 and mating nuts 58 to a rigid structural member such as the head or end plate 22 of the grinding mill.
  • the liner members or wear plates such as 44a, 44b and 440 are pyramided upon each other in a radial line, with the radially outermost edge of the wear plates in the given radial line of wear plates, such as the radially outer edge of wear plate 440, resting in firm engagement with a rigid structure such as the radially inner surface 42 of the filler ring 36, and with the radially innermost edge of the radially pyramided line of wear plates or liner members 44a, 44b and 440 being held in place by a grinding pad such as grinding pad 47 on the pinned liner member 46.
  • Each radially pyramided row of wear plates around the 360 of the liner or wear plate assembly generally indicated at 30 is mounted in the manner just described for the three radial rows of wear plate or liner members shown in the fragmentary view of FIG. 2.
  • Each row of radially pyramided liner members is circumferentially spaced from the radial rows of liner members contiguous thereto to accommodate the lifter bars 60.
  • a lifter bar 60 is interposed between each pair of liner members or wear plates lying in contiguous radial rows.
  • the plurality of lifter bars each generally indicated at 60 are positioned between respective pairs of circumferentially spaced contiguous liner members or wear plates.
  • a lifter bar 60a is positioned between the two wear plates 44a and 44d
  • another lifter bar 60d is positioned between the wear plates 44d and 44g.
  • a lifter bar 60b is interposed between the wear plates 44b and 44e
  • another lifter bar 60c is positioned between the wear plates 44e and 44h.
  • Another lifter bar 600 is interposed between the wear plates 44c and 44f and still another lifter bar 60f is interposed between the wear plates 44f and 44i.
  • An arrangement similar to that just described extends around 360 of the liner assembly.
  • each lifter bar includes a flat axial end portion 62, a pair of diverging axially extending tapered sides 64 which terminate in substantially straight axially extending wall portions 66 which are respectively bounded at their axially inner ends by circumferentially extending flat portions 68 bounded by converging axially extending tapered portions 70 which terminate at a flat axial end portion 72.
  • Each of the liner members or wear plates such as 44e and 44h is provided with a steplike portion defined by the axially extending edge 74 and by the circumferentially extending flat edge 76.
  • a tapered axially extending edge 78 extends from the boundary of edge 76.
  • the opposite flat edges 68 of the lifter bar 60 are adapted to bear against the corresponding flat edges 76 of the two adjacent wear plates 44e and 44h, for example.
  • the terms axial and circumferential as used in describing the lifter bar and wear plates relates to the axial and circumferential directions of the grinding mill on which the lifter bars are mounted.
  • a pair of bolts extend through a passage in the lifter bar 60 and through a passage in the end flange 16 of the grinding mill and is secured in place by a nut 82.
  • the head end of each bolt 80 is received in a countersunk recess in the lifter bar, whereby the head end of the bolt is substantially removed from contact with the workload in the mill.
  • the bolt 80 and nut 82 serve to clamp the lifter bar 60 against the edges 76 of the steplike recesses in the respective liner members or wear plates 442 and 44h, thus providing a secondary holding means for securing the liner members in position.
  • the lifter bar 60 and the wear plates 442 and 44h are so dimensioned and are so positioned relative to each other that a clearance exists between the axially extending edges 74 of the respective steplike recesses of the members 44e and 44h with respect to the contiguous edges 66 of lifter bar 60. Also, there is a clearance between the tapered edges 70 of the lifter bar 60 and the contiguous tapered edges 78 of the liner members or wear plates 442 and 44h.
  • FIGS. 1-5 Another distinct advantage of a lifter bar such as that shown in FIGS. 1-5 is that it permits the holddown bolt 80 to be seated deeper in the lifter due to the countersunk passage in lifter bar 60 for receiving the head end of bolt 80, thereby reducing the shaft length of the bolt.
  • each lifter 60 in the illustrated embodiment has been shown as being secured in position by two bolts 80 in spaced relation to each other radially of the liner assembly and of the grinding mill, it is also feasible with this construction, in certain portions of the assembly, to use two lifter bars 44" (not shown) each having one-half the radial length of lifter bar 44 and each held in place by one holddown bolt 80.
  • lifter bars 44" would be related to the wear pattern of the lifters and may reduce throwaway scrap to a considerable extent byv permitting discarding of worn lifters in a more economically efficient manner.
  • FIG. 5 a modified mounting arrangement for the lifter bar 60 which may be used in certain regions of the wear plate assembly in which'the wear pattern of the workload on the wear plates 44a and 44h is such that the wear plates are not substantially worn away in the immediate region of the lifter bar.
  • the lifter bar 60 is the same as that previously described in the embodiment of FIG. 4.
  • the wear plates 44c and 44h do not have the stepped arrangement previously described in connection with the embodiment of FIG. 4, but rather are provided only with an axially extending tapered surface 77 which merges into an axially extending straight or flat edge surface 79.
  • the lifter bar 60 in the embodiment of FIG. 5 is the same as the lifter bar 60 in the embodiment of FIG. 4. I-lowevendue to the fact that the lifter bar 60 in the embodiment of FIG. 5 is not received in a stepped recess of the wear plates 44c and 44h as in the case of the embodiment of FIG. 4, a larger portion of the lifter bar 60 of the embodiment of FIG. 5 projects outwardly beyond the wear plates Me and 44h and into the hollow grinding space of the mill.
  • the construction of FIG. 5 therefore results in a more efficient utilization of the material of the lifter bar, since a greater portion of the lifter bar projects into the work space for effective lifting action in the embodiment of FIG. 5 than in the embodiment of FIG. 4.
  • the lifter bar 60 of FIG. 5 has a longer useful life than the lifter bar of FIG. 4 since with the mounting arrangement of FIG. 5 a longer time is required for the workload to wear the lifter bar 60 down to a condition in which it must be scrapped.
  • the wear plates 44c and 44h and the lifter bar 60 of the embodiment of FIG. 5 are so positioned relative to each other that a clearance space exists between the tapered edges 70 of the lifter bar 60 and the adjacent tapered edges 77 of the respective wear plates 442' and 44 h.
  • the right-hand or discharge end of the grinding mill is provided with a discharge diaphragm assembly in which the subassembly generally indicated at 30', to be described more fully hereinafter, and comprising the grates, wear plates, discharge cone, and lifters are assembled in a manner generally similar to the liner assembly 30 located at the feed end of the grinding mill.
  • the grinding mill is provided at the discharge end with a discharge casting assembly generally indicated at 86, positioned contiguous the axially inner end of the end flange H6 at the discharge end of the grinding mill and comprising a plurality of superposed tiers of outer discharge castings 87, middle or intermediate discharge castings'SS, and inner discharge castings 89.
  • Contiguous discharge castings 87, 88, in a given tier have wedge bolts (not shown) positioned therebetween to hold the castings in tightly assembled relation in a direction circumferentially of the discharge end of the grinding mill.
  • a ring liner 90 which serves as a wear surface is 1 secured to the inner surface of the end plate 22' of the grinding mill radially inwardly of the assembly 86 of the outer discharge castings, middle discharge castings, and inner discharge castings.
  • a discharge cone generally indicated at 91 formed of a plurality of arcuate castings joined to complete a 360 arc is secured in position by wedge bolts 92.
  • the wedge bolts 92 are generally similar to those used for discharge castings 87 and 88 and are received in cooperating recesses in contiguous discharge cone castings.
  • the wedge bolts pass through flanges 93 of the cone castings, through ring liner 90, and through wall 22' of the mill. The wedge portions of the bolts engage contiguous discharge cone castings to maintain the discharge cone castings in tightly assembled relation.
  • a retainer ring 95 preferably made in several 180 degree sections, is bolted to the radially inner periphery of discharge cone 91, and once the discharge cone castings are adjusted in the final assembly, the 180 sections of retainer ring 95 are welded together.
  • the retainer ring 95 provides a supplemental radial retaining action preventing radial movement of the discharge cone and wear plate casting assembly.
  • the radially outer edge of the discharge cone 91 cooperates with the radially inner edge of the wear plate assembly to hold the wear plate assembly in position.
  • a plurality of grate castings each generally indicated at are mounted in contiguous relation to each other about a 360 arc interiorly of the grinding mill.
  • the radially outer edges of the grate castings 100 abut against the radially inner surface of a filler ring 36' similar to the filler ring 36 previously described at the feed end of the grinding mill.
  • the radially outer edge surfaces of the grates 100 are arcuate to match the arcuate curvature of the radially inner surface of the filler ring 36'.
  • the discharge castings 87, 88, 89 include integral axially and radially extending flange portions 102 which serve to space the right-hand axial face of the discharge grates 100, with respect to the view of FIG. 1, and of the wear plates stacked thereon, from the axially facing surface of the discharge casting assembly 86, whereby to define a discharge chamber 104 between the grate and wear plate assembly 30 and surfaces of the discharge casting assembly generally indicated at 86.
  • the radially outermost discharge castings 87 include an integral circumferentially extending flange 103 which defines the bottom of discharge chamber 104.
  • the grates 100 are provided with passages 106 therethrough of appropriate size whereby the material being ground in the grinding mill when it reaches the appropriate size will pass through the passage I06 and into the discharge chamber 104 defined by the space between the grate and wear plate subassembly 30' and the discharge casting assembly 86.
  • the material passing into chamber 104 ultimately passes outwardly through the discharge trunnion 24' of the grinding mill.
  • a lifter bar 108 is interposed between each pair of contiguous grates 100.
  • a tier comprising a plurality of intermediate wear plates 110 similar to the wear plates 44 previously described at the feed end of the grinding mill, are stacked above or radially inwardly of the grates 100, as best seen in FIG. 7, the intermediate wear plates extending for 360 around the inner periphery of the grinding mill.
  • Lifter bars 108 are provided between each pair of contiguous wear plates 1 10.
  • a tier comprising a plurality of radially inner wear plates I12 are positioned in a stacked relation to the wear plates 110, and a lifter bar 108 is positioned between each pair of contiguous ear plates 112.
  • the lifter bars I08 disposed between grates 100, between contiguous intermediate wear plates 110, and between the wear plates 112 are all respectively similar to the lifter bar 60 shown in FIG. 4 of the drawings.
  • each pair of contiguous grates, intermediate wear plates, and radially inner wear plates may be recessed in the same manner as described in connection with the wear plates Me and 44!: in the view of FIG. 4 to receive the lifter bar 108.
  • the lifter bars I08 and the wear plates may cooperate in the manner shown in FIG. 5 of the drawings.
  • Each lifter bar 108 is held in place by a bolt such as the bolt 80, and by a nut such as the nut 82 shown in the view of FIG. 4, the bolt passing through the lifter bar, through flanged regions 102 (FIG. 7) of the castings of the discharge subassembly 86, and through the end flange 16 of the grinding mill.
  • the castings of the discharge cone 91 are respectively provided on the radially outer periphery thereof with grinding pads 114 which are adapted to engage a recessed or stepped area 116 at the radially inner edge of the radially inner wear plates 1 12.
  • the vertical or radial dimension of the wear plates 112 is measured, and knowing this dimension, the integral grinding pads 114 located on the already installed discharge cone casting 91 can be ground or trimmed to the exact dimensional requirements to maintain the plurality of stacked tiers of grates 100, intermediate wearing plates 110, and radially inner wearing plates 112 in tightly assembled relation in the same manner as described in connection with the wear plates 44 of the feed end as shown in the views of FIGS. 1, 2 and 3.
  • the wear plates 44 at the feed end of the mill are provided with supplemental lifter bars 45 cast integrally with the wear plates.
  • the wear plates 110 and 112 at the discharge end of the mill are provided with supplemental lifter bars 115 cast integrally with the wear plates.
  • the integral lifter bars 45 and 115 supplement the action of the respective lifter bars 69 (FIGS. 1, 2 and 3) and 108 (FIG. 7).
  • FIG. 8 a fragmentary view of a modified arrangement which may be used in place of the grinding pads such as the grinding pads 47, 50 and 54 of FIG. 2 and the grinding pads 114 of FIG. 7 for holding the wear plate assembly at the feed end of the mill or the grate and wear plate assembly at the discharge end of the mill in tightly radially assembled and pyramided relation.
  • a pair of wedges 1 18 and 120 of a suitable metal are positioned in the clearance space between the radially innermost edge of the radially innermost set of wear plates 144 and the pinned liner member 146.
  • the two wedges 118 and 120 have their facing tapered surfaces tapering in opposite axial directions so that wedge 118, for example, may be driven to the left, with respect to the view shown in FIG. 8, to increase the wedging action of the two combined wedges with respect to members 144 and 146.
  • a single T-shaped wedge 122 may be driven between the facing surfaces of the radially innermost wear plate or liner member 144 and the pinned liner member 146 to provide a wedging action which holds the assembly of wear plates in tightly assembled relation.
  • the pair of wedges 118 and 120 or the single T-shaped wedge 122 may be used in any position in which a grinding pad such as 47, 50, 54 or 114 would otherwise be used, and a plurality of pairs of wedges 118-120 or a plurality of T-shaped wedges 122 would be used between the plurality of radially innermost wear plate members 44 and the contiguous pinned liners such as 46 (FIGS. 1, 2 and 3) at the feed end of the grinding mill, or between the wear plates 112 and the discharge cone 91 (FIGS. 1 and 7 With the wedges 118 and 120 (FIG. 8) or with the T-shaped wedge 122 (FIG.
  • a suitable weld such as a tack weld, for example, may be positioned over the axially inner end of the wedge to prevent movement of the wedge means away from its proper adjusted position.
  • the manner of holding the wear plate assemblies or grate and wear plate assemblies in tightly assembled relation in accordance with the invention hereinbefore described has numerous advantages.
  • One important advantage is that the end liner or wear plate assembly, while it obtains some supplementary clamping action from the lifter bars 60, will not be affected immediately if a lifter bar becomes detached from or loose in its mounting since'the primary clamping action depends upon the engagement of the grinding pads (FIGS. l-7) or the wedges (FIGS. 8 and 9) with the liner assembly.
  • a further advantage of the construction hereinbefore described is that the use of grinding pads on the individual wear plates or liner members constituting the end liner assembly is obviated, and the entire adjustment action for providing radial compression of the wear plate assembly is obtained between the radially inner end of the wear plate assembly and a pinned liner or other member which is stationary with respect to the grinding mill structure.
  • a further advantage of the construction is that the liner members or wear plates may have straight edges at the radial ends thereof which allows for more economical casting in the foundry and which permits easier inspection by means of a template. Still a further advantage is that the construction permits readjustment of the number of wear plates or liner elements when a wearing pattern has been established in the grinding mill. Still a further advantage of the construction is that the wear plates or liner members do not have to be precisely dimensioned in a circumferential direction. Still a further advantage of the construction is that the liner members or wear plates cannot shift during running conditions of the mill.
  • An end liner assembly adapted to be mounted inside an axial end of a rotary grinding mill, comprising a plurality of radially superposed tiers of liner members, the radially outermost end of said plurality of tiers bearing against means rigid with respect to said mill, and means carried by said mill and engaging the radially innermost end of said plurality of tiers and holding said plurality of tiers in radially compressed relation.
  • An end liner assembly as defined in claim 1 including a first member rigidly fixed to the axial end of the grinding mill, and means carried by the radially outer end of said first member engaging the radially inner end of said plurality of tiers to hold said plurality of tiers in radially compressed relation.
  • An end liner assembly as defined in claim 1 including a first member rigidly fixed to the axial end of the grinding mill, said first member including a radially outer edge lying radially inwardly of the radially innermost end of said plurality of tiers, and means interposed between said radially outer edge and said radially innermost end for holding said plurality of tiers in radially compressed relation.
  • An end liner assembly as defined in claim 1 which is positioned at the feed end of the grinding mill.
  • An end liner assembly as defined in claim 1 which is positioned at the discharge end of the grinding mill, and in which the radially outermost of said plurality of tiers comprises at least one grate member having passages therein to permit passage therethrough of material to a discharge passage.
  • a given tier comprises a plurality of circumferentially spaced liner members, lifter bar means positioned between contiguous liner members in a given tier, and means for holding said lifter bar means in clamped engagement with said contiguous liner members.
  • An end liner assembly as defined in claim 10 in which contiguous liner members and the lifter bar means positioned therebetween in a given tier are contoured to'permit said lifter bar means to clampingly engage said contiguous liner members, and means securing said lifter bar means in clamped engagement with said contiguous liner members.
  • a rotary grinding mill an end liner assembly adapted to be mounted inside an axial end of said grinding mill, said end liner assembly comprising a plurality of radially superposed tiers of liner members, the radially outermost end of said plurality of tiers bearing against means rigid with respect to said mill, and means carried by said mill and engaging the radially innermost end of said plurality of tiers and holding said plurality of tiers in radially compressed relation.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
US872294A 1969-10-29 1969-10-29 End liner assembly for rotary mill or the like Expired - Lifetime US3604637A (en)

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US87229469A 1969-10-29 1969-10-29

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US (1) US3604637A (de)
CA (1) CA930712A (de)
DE (1) DE2053238A1 (de)
GB (1) GB1330523A (de)
ZA (1) ZA707206B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894696A (en) * 1972-08-02 1975-07-15 Skega Ab Device at grate means mounted in a mill or another processing apparatus
US4365763A (en) * 1979-10-26 1982-12-28 Dominion Engineering Works Limited Discharge zone fastening assembly for grinding mill
US4646980A (en) * 1985-05-20 1987-03-03 Evans Products Company Cone discharge for diaphragm discharge rotary grinding mill
US5814273A (en) * 1997-04-04 1998-09-29 Nielsen; Jack T. Trunnion liner apparatus
CN102836760A (zh) * 2011-06-25 2012-12-26 顾开明 一种带加强筋的篦板衬板
CN116474895A (zh) * 2023-04-21 2023-07-25 南京银茂铅锌矿业有限公司 一种防止球磨机进出料衬颈磨损的耐磨方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104759328A (zh) * 2014-07-22 2015-07-08 周鸿钧 一种球磨机用衬板

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US229577A (en) * 1880-07-06 Johajst e
US1562791A (en) * 1923-04-10 1925-11-24 Jr Joseph P Ruth Discharge head for grinding mills
US1690493A (en) * 1927-06-07 1928-11-06 Frank E Marcy Mill
US3211387A (en) * 1962-09-17 1965-10-12 Koppers Co Inc Grinding mill lining and control of the wear thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US229577A (en) * 1880-07-06 Johajst e
US1562791A (en) * 1923-04-10 1925-11-24 Jr Joseph P Ruth Discharge head for grinding mills
US1690493A (en) * 1927-06-07 1928-11-06 Frank E Marcy Mill
US3211387A (en) * 1962-09-17 1965-10-12 Koppers Co Inc Grinding mill lining and control of the wear thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894696A (en) * 1972-08-02 1975-07-15 Skega Ab Device at grate means mounted in a mill or another processing apparatus
US4365763A (en) * 1979-10-26 1982-12-28 Dominion Engineering Works Limited Discharge zone fastening assembly for grinding mill
US4646980A (en) * 1985-05-20 1987-03-03 Evans Products Company Cone discharge for diaphragm discharge rotary grinding mill
US5814273A (en) * 1997-04-04 1998-09-29 Nielsen; Jack T. Trunnion liner apparatus
CN102836760A (zh) * 2011-06-25 2012-12-26 顾开明 一种带加强筋的篦板衬板
CN116474895A (zh) * 2023-04-21 2023-07-25 南京银茂铅锌矿业有限公司 一种防止球磨机进出料衬颈磨损的耐磨方法

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CA930712A (en) 1973-07-24
DE2053238A1 (de) 1972-01-27
ZA707206B (en) 1972-05-31
GB1330523A (en) 1973-09-19

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