• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1. DEVICE FOR PROTECTION AGAINST WEAR OF THE INTERNAL SURFACE DRUM OF NEW MILLS for grinding material including magnetic particles, mainly ores, containing permanent magnetic means, PC attachment means to the inner surface of the drum and separation elements, characterized in that, in order to increase it Comparison of the service by creating a protective layer on the working surface of mag. material particles, the magnetic means are bar-shaped and are located between the separating elements at a distance from one another with alternating polarity, the separating elements and the permanent magnetic means being arranged in steps at different levels in height. 2. The device according to claim 1, about tl and that the magnetic means are recessed into the inner surface of the mill drum. 3. The device according to paragraphs. 1 and 2, that is, the magnetic means are located along the entire surface of the drum of the mill. i 4. The device of claim 1, about tl and that the magnetic means have a plate made of magnetic material from the side of the surface subject to wear.
    公开号:SU1120918A3
    申请号:SU802947002
    申请日:1980-07-09
    公开日:1984-10-23
    发明作者:Брандт Бертил
    申请人:Сокаред С.А.(Фирма)；
    IPC主号:
    专利说明:

    The invention relates to devices for protecting the inner surface of the mill drums from wear.
    A device for protection against wear of the inner surface of drum mills is known, which includes bronone plates fastened to the hull with bolts lj.
    The closest technical solution to the invention is a device for protection against wear of the inner surface of the mills' drums for grinding material including magnetic particles, mainly ores, containing permanent magnetic means, means of fastening them to the inner surface of the drum and separating elements 2 .
    However, the known devices have 20 small service life.
    The purpose of the invention is to increase the service life by creating a protective layer on the working surface of magnetic material particles. 25
    This goal is achieved by the fact that in the device for protection against wear of the inner surface of the drum of mills for grinding the material including magnetic particles, pre-. 30 properties of ore containing permanent magnetic means, means of their attachment to the inner surface of the drum and separating elements, magnetic means are made in the form of 35 bars and are located between separating elements at a distance from each other with alternating polarity. These magnetic means 40 are located stepwise at different levels in height.
    The magnetic means may be embedded in the inner surface 45 of the mill drum, and may also be located across the entire surface of the mill drum and have a plate of magnetic material on the side of the surface subject to wear. 50
    FIG. Figure 1 shows automatically recoverable anti-wear protection of magnetic particles only on the left-hand lift for better comparison with conventional hoists-55; FIG. 2 shows a device with an arrangement of the separating elements and permanent magnetic means; step, option; in fig. 3 - device with a plate.
    The mill has a drum 1 with a lining attached to its inner side. Said lining includes wear resistant rubber in the plates 2 and has protruding fastening flanges 3. The facing also contains separation elements 4 including elastomeric or rubber parts 5 with an inner recess 6 for a metal crossbar 7 with bolts 8 welded to it, which pass through the holes in the drum and interact with the washers 9 and nuts 10. T-bolts can be used instead of the bolts and crossbars mentioned. The mill facing is thus held in a position in which the protruding mounting flanges 3 of the plates of the drum 2 are pulled towards the drum 1 by means of a metal crossbar 7 located in the inner groove 6 of the elements 4. There may also be other methods of fastening the facing.
    The separating elements 4 have inserts 11, to which a plurality of permanent magnets 12 are attached, the permanent magnets protrude slightly from the surfaces of the elements 4 from the apron sides when the mill rotates in the direction of arrow 13. However, sometimes this can be an advantage when the permanent magnets end directly below the elevator surfaces. The south and north poles of the permanent magnets 12 alternately rotate outwards and the permanent magnets will therefore attract the magnetic particles in the mill load, with the result that these particles are held in the form of layer 14, This. the layer serves as an automatically reducing means of protection against wear for the elements 4, since the load hits the layer and the abrasive action from the load on the lift is not as strong as the layer 14 would not be.
    The magnetic particles in layer 14 may become free when the load hits the layer; 14, but new magnetic particles from the load will be pulled, with the result that the protective layer 14 remains intact also in
    time of continuous rotation of the mill drum.
    Parts 5 of the elements 4, drum plates and traditional lifts consist of the same wear-resistant rubber material. The mill has diameters of 5 and 9 m and. continuously at: one in rotation with secondary grinding with pieces of magnetite and quartz in the mixture (particle size not exceeding 60 mm) of so-called pebbles. Traditional lifts initially had a profile depicted by line 15, and lines 16 to 18 depict the profiles of the remains of lifts after continuous operation for 7 months, 14 months. and 21 months
    When profile 18 was received, i.e. after 21 months, the time has come to put new traditional lifts. Later this time the rubber part 5 of the elements 4, equipped with permanent magnets 12, is subjected to less wear, as shown by dotted line 19 on the right lift (figure 2)
    During the test period, it was found that the automatically reducing wear protection layer 14 is not completely homogeneous, but includes the inner homogeneous layer itself of a very fine-grained magnetic material and the outer heterogeneous layer of larger particles of the magnetic mineral, and highly worn magnetite grinding pieces, or pebbles.
    The tests thus carried out show that the invention} i, a strong improvement in the service life of the facing of the mill due to the presence. an automatically regenerating, anti-wear layer 14 of magnetic fine-grained material containing: the load.
    The ability to use the invention to protect
    mill drum from wear (Fig. 2). In this case, the mill is designed as a primary mill, i.e., a mill for grinding a coarse raw material. The facing of the mill is wavy, i.e. the plates of the drum 20 are formed in the form of steps having a low part 21 and a high part 22, which is lower than the upper side of the elements 4. The fixing of the elements and plates is made as in FIG. 1. However, in the embodiment shown in FIG. 2, not only the elements 4, but also the plates 20 have metal inserts 11 and permanent magnets 12 attached to them. As a result, permanent magnets located at gradually increasing levels form a slightly inclined surface profile with a protective layer 14 of magnetic particles, which are drawn by permanent magnets (Fig. 1). In this case, it can also be found that the protective layer 14 has a multilayer composition that includes the inner fine-grained and outer coarse-grained layers. Layer 14, when tested in a mill having a diameter of 2.9 m, is about 5 cm thick and contains some worn grinding balls. Layer 14 forms a continuous pseudo-fluid layer providing an effective shield against abrasion of the cladding.
    FIG. 3 shows a variant of the device in which the magnetic means have a plate 23 of magnetic material on the side of the surface subject to wear.
    The proposed device allows to increase its service life by creating a protective layer on the working surface of magnetic material particles.
    权利要求:
    Claims (4)
    [1]
    1. DEVICE FOR PROTECTING AGAINST THE INNER SURFACE OF THE MILLS DRUMS for grinding material comprising magnetic particles, mainly ores, containing permanent magnetic means, means of their attachment to the inner surface of the drum and separation elements, characterized in that, in order to increase its life service by creating a protective layer on the working surface of magnetic particles of material, the magnetic means are made in the form of bars and are located between the separation elements at a distance of one from rugogo with alternating polarity, wherein the spacer elements and the permanent magnetic means are staggered at different levels in height.
    [2]
    2. The device according to p. ^ Characterized in that the magnetic means are recessed in the inner surface of the mill drum.
    [3]
    3. The device according to paragraphs. Ί and 2, characterized in that the magnetic means are located on the entire surface of the drum of the mill. .
    [4]
    4. The device according to p. ^ Characterized in that the magnetic means have a plate of magnetic material on the surface side, subject to wear.
    8160211 W
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1120918A3|1984-10-23|Device for wear protection of mill drum internal surface
    US4289279A|1981-09-15|Mill lining
    US6303241B1|2001-10-16|Wear plate retainer with magnetically retained, replaceable wear plate
    AU672717B2|1996-10-10|Lifting element for rotary mill and mill equipped with such elements
    SE434805B|1984-08-20|WEARING LINING OF RUBBER FOR ROTATING DRUM
    US6027057A|2000-02-22|Wear-resistant, self-replenishing magnetized grinding mill liner
    US2246902A|1941-06-24|Disintegrator of impact cage type
    CN109663642A|2019-04-23|A kind of composite ceramic Rubber magnetic shoe liner plate
    US5814273A|1998-09-29|Trunnion liner apparatus
    CA1038319A|1978-09-12|Conveyor belt wear protection
    CA1218975A|1987-03-10|Wear and abrasion resistant wall structure,particularly for mills for grinding a chargecomprising magnetic material
    EP3057711A2|2016-08-24|Treaded lifter bar
    SU1757740A1|1992-08-30|Lining of tumbling barrel
    GB1593025A|1981-07-15|Mill linings
    CN214288400U|2021-09-28|Anti-rotation and anti-abrasion device of multi-cylinder cone crusher
    RU2173583C1|2001-09-20|Hydrocyclone
    JPH07228319A|1995-08-29|Chute inner wall protective device
    RU2069589C1|1996-11-27|Rubber member of spiral classifiers facing
    RU2105610C1|1998-02-27|Lining
    SU1115805A1|1984-09-30|Electric magnetic pulley iron separator
    RU2016658C1|1994-07-30|Lining plate
    US4863589A|1989-09-05|Elongated member and cover for use with sizing screen
    SU907259A1|1982-02-23|Working member of cutter-loader for sinking mine shafts
    SU1669540A1|1991-08-15|Charging device for cone breaker
    SU1608348A1|1990-11-23|Support of ore chute of magnetic minerals
    同族专利:
    公开号 | 公开日
    CA1218972A|1987-03-10|
    ES493320A0|1981-06-16|
    CA1218974C|1987-03-10|
    NO151573B|1985-01-21|
    EP0022758B1|1983-02-09|
    MX154535A|1987-09-28|
    FI802201A|1981-01-14|
    IN154573B|1984-11-10|
    NO151573C|1985-05-08|
    AT2399T|1983-03-15|
    JPS585706B2|1983-02-01|
    AR223538A1|1981-08-31|
    PH21963A|1988-04-15|
    PL123829B1|1982-11-30|
    SE421868B|1982-02-08|
    PL225619A1|1981-03-27|
    SE7906098L|1981-03-10|
    FI65389B|1984-01-31|
    ZA804045B|1981-07-29|
    JPS5638142A|1981-04-13|
    DK151086C|1988-03-21|
    EP0022758A1|1981-01-21|
    DE3061894D1|1983-03-17|
    DK282980A|1981-01-14|
    UA5556A1|1994-12-28|
    AU6001480A|1981-01-15|
    BR8004377A|1981-02-03|
    FI65389C|1984-05-10|
    DK151086B|1987-11-02|
    ES8105583A1|1981-06-16|
    AU521112B2|1982-03-18|
    NO802067L|1981-01-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE548853C|1930-11-05|1932-04-20|Otto Buettner|Device for the finest grinding of cement or the like.|
    JPS568883B2|1975-02-06|1981-02-26|
    DD137065A1|1975-12-12|1979-08-15|Ernst Madai|DEVICE FOR CRUMINING CERTAIN SUBSTANCES|
    SU656657A1|1977-08-01|1979-04-15|tfs.'- • ^Ш>&^|Reflecting screen for supercritical drum mills|JPS621904U|1985-06-19|1987-01-08|
    EP0233746A3|1986-02-10|1988-04-27|Conveyor and Transmission SupplyLimited|Mill lining|
    JPH0193403U|1987-12-14|1989-06-20|
    LU88409A1|1993-09-17|1994-04-01|Magotteaux Int|Lifting element for rotary crusher and crusher equipped with such elements|
    US6027057A|1998-05-06|2000-02-22|David Roger Miles|Wear-resistant, self-replenishing magnetized grinding mill liner|
    CN2923026Y|2006-06-22|2007-07-18|北京金发工贸公司|Ring-groove-type magnetic lining board|
    AU2013202181B2|2008-04-01|2014-07-31|Weir Minerals Australia Ltd|A lifter bar assembly for a crushing mill and method of installation|
    WO2009121129A1|2008-04-01|2009-10-08|Weir Minerals Australia Ltd|A lifter bar assembly for a crushing mill and method of installation|
    CN106669903A|2015-11-09|2017-05-17|北京环磨科技有限公司|Nanometer steel magnetic liner plate|
    WO2019144251A1|2018-01-29|2019-08-01|北京环磨科技有限公司|Metal magnetic lining formed by reinforcing protective layers|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE7906098A|SE421868B|1979-07-13|1979-07-13|FOR WRAPPING EXPOSED WALL THAT WHEN USING IT IS POSED FOR PACKING OF PIECE OR PARTICULAR GOODS CONTAINING MAGNETIC PARTICLES|
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