CN102357410A - Dry-type permanent magnetic roller for separation of fine-disseminated ore - Google Patents
Dry-type permanent magnetic roller for separation of fine-disseminated ore Download PDFInfo
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- CN102357410A CN102357410A CN201110320476XA CN201110320476A CN102357410A CN 102357410 A CN102357410 A CN 102357410A CN 201110320476X A CN201110320476X A CN 201110320476XA CN 201110320476 A CN201110320476 A CN 201110320476A CN 102357410 A CN102357410 A CN 102357410A
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Abstract
A dry-type permanent magnetic roller for separation of fine-disseminated ore is characterized in that: the magnetic roller comprises a magnetic roller core shaft, a non-magnetic conductive cylinder by which the magnetic roller core shaft is sleeved in a manner that the cylinder has a same shaft center as the magnetic roller core shaft, stainless steel rings and low-carbon steel rings by which the non-magnetic conductive cylinder are orderly sleeved with intervals; a magnet ring formed by a plurality of spaced sector magnets and magnetism isolating materials are mounted surrounding an outer ring surface of each low-carbon steel ring, and a non-magnetic conductive material ring is mounted surrounding an outer ring surface of each stainless steel ring; a stainless steel wrapping layer is disposed on the outermost layer of the magnetic roller; the sector magnets are arranged with the N and S poles being alternative in the axial and circumference directions of the whole roller, and the magnetic poles are in pairs with each magnetic pole being an opposite magnetic pole to its adjacent magnetic pole.
Description
Technical field
What the present invention relates to is the magnetic mineral screening installation in Mineral Processing Engineering field, is particularly useful for the magnetic separation of fine-grained disseminated grain iron ore material, relates to a kind of dry type permanent magnetism magnetic roller that is used for the fine-grained disseminated grain sorting mineral specifically.Magnetic roller of the present invention also can be used for from non-magnetic material rejecting magnetic impurity and purification magnetic material, also can be used for aspects such as department such as metallurgy, chemical industry, cement, grain and slag treatment.
Technical background
Magnetic separation is a kind of important method in the feed separation treatment technology, and its technology has clean free of contamination characteristics.Permanent-magnet concentration equipment is because of it has less energy consumption, cost is low, simple in structure, easy to operate, and pollution-free or pollution is widely used in the mineral manufacture field less.In recent years, the permanent-magnet material especially performance of Nd-Fe-Bo permanent magnet material is greatly improved, and can manufacture magnetic energy product in the industry and has reached 420kJ/m
3Above sintered Nd-Fe-B permanent magnetic material is for the permanent-magnet concentration Equipment of Development provides condition.Along with China increases the increasing demand of iron ore, in order to guarantee the resources effective utilization, must develop a large amount of extreme poverty ore deposit and unbalanced-ore, the raising of production technique in addition causes the rate of dilution of extracted ore to rise.In order to improve the milling ore grade, reduce power consume, need mineral aggregate is carried out preliminary election in advance, abandon a part of abandoned mine.At present, the lump ore dry type permanent magnetic separator and the magnetic pulley of extensive use, the CTDG series and the Beijing Mine and Metallurgy General Inst that develop like Ma'an Mountain mine study-a institute develop magnetic plants such as CT series; Can abandon 10% ~ 30% mine tailing in advance, go into the preceding iron ore grade of mill, reduce and gone into the mill amount though improved to a certain extent; Reduced energy consumption; But this magnetic pulley dry-dressing machine only is applicable to the mineral aggregate sorting of the above granularity of 6mm, and is low for head grade, and the mineral that disseminated grain size is thin are no longer suitable; Though wet split can be handled the fine granularity mineral aggregate, received great restriction in extremely cold area with lack of water.In addition, now general magnetic separator magnetic system, not only number of magnet poles is few; And on the distance of ore grain movement, the magnetic force size is very inhomogeneous, this make ore dressing two indexs---the rate of recovery and grade conflict; For improving the rate of recovery; Require to improve magnetic force, but the quantity of non magnetic entrainment is also along with increase, thereby grade is descended; Otherwise, for upgrading, require to reduce magnetic force, but part magnetic thing also can lose, the rate of recovery is reduced.Chinese patent CN2220900Y, CN2915265Y all relate to cylinder magnetic separator, but in use mainly there is following problem in above-mentioned magnetic separator: field pole is traditional circumferencial direction alternate along cylinder; The fixed form of magnet has problem, causes magnetic field to can not get effective utilization.Traditional magnetic roller for the magnetic energy level and the gradient that improve the magnetic roller, strengthen its sorting capability to weak magnetic mineral, adopt with the mandrel concentric and along circular magnetic sheet or fan-shaped magnetic sheet that mandrel axially is arranged in juxtaposition in turn and make up, adjacent circular magnetic sheet or the pairing pole polarity of fan-shaped magnetic sheet are identical; Accompany the excitatory material of high magnetic conduction between circular magnetic sheet or fan-shaped magnetic sheet, what aggregate into axially-aligned thus gathers magnetic magnetic roller, though the magnetic field intensity of this structure magnetic gathering roller improves again to a certain extent; But the magnetic field depth of interaction can be affected; The magnetic line of force is cyclically-varying on the axle of working face upper edge simultaneously, and along the circumferential direction approximately equivalent distributes, and the section magnetic field, limit of each magnetic sheet is the highest; And middle magnetic field a little less than; It is more that the magnetic field cyclically-varying causes the mineral aggregate of magnetic force strong position absorption on the assorting room central axis direction, and material can be adsorbed hardly in the weak place of magnetic force, causes material evenly not disperse; Produce being mingled with of non-magnetic material, influence the product grade and the rate of recovery.
Summary of the invention
Existing weak point in the above-mentioned just prior art of the object of the invention and a kind of dry type permanent magnetism magnetic roller that is used for the fine-grained disseminated grain sorting mineral is provided.The magnetic field effect of this magnetic roller ability limits performance magnet, the magnetic field active force is big, and magnetic Cheng Shen has efficiently utilized the magnetic field effect of magnetic roller, can effectively improve the product grade and the rate of recovery, practices thrift mineral resources, and simple in structure.
The object of the invention can be realized through following technique measures:
The dry type permanent magnetism magnetic roller that the present invention is used for the fine-grained disseminated grain sorting mineral comprises the magnetic roller core shaft, is sleeved on the non-magnetic conduction cylinder on the magnetic roller core shaft with the mode with magnetic roller core shaft concentric, and spacer sleeve is equipped with stainless steel annulus and mild steel annulus successively on non-magnetic conduction cylinder; Outer ring surface around each mild steel annulus is equipped with the magnet ring that is made up of several fan-shaped magnets that is provided with at interval, trapezoidal NULL body; The permeability of mild steel is lower than electrical pure iron; But saturation magnetization and electrical pure iron are close; Because its cost is lower, the magnetic roller of middle low performance generally adopts this kind material, around the outer ring surface of each stainless steel annulus the non-magnet material ring is installed; The outermost layer of said magnetic roller is provided with the stainless steel integument; Said fan-shaped magnet is N on the axial and circumferencial direction of whole roller, the S utmost point is alternately arranged; And magnetic pole occurs in pairs, and the magnetic pole that each magnetic pole is adjacent all is an opposite pole, and fan-shaped magnet adopts high-performance Ne-Fe-B (NdFeB) rare-earth permanent magnet; The volume of permanent magnet and axial dimension also have certain influence to the working surface magnetic induction intensity of magnetic roller; Higher magnetic field intensity generally requires axial dimension design bigger of magnet ring, in practice; To confirm corresponding volume of permanent magnet and axial dimension according to actual needs.
The internal diameter of non-magnetic conduction cylinder is greater than the external diameter of magnetic roller core shaft described in the present invention; Said non-magnetic conduction cylinder two ends combine with the magnetic roller core shaft through bolt through the ring flange that is inlaid on the magnetic roller core shaft respectively; And the equal diameters of the external diameter of said ring flange and whole magnetic roller, non-magnetic conduction cylinder, mandrel, ring flange and connecting bolt are stainless steel or nonmagnetic steel.
The non-magnet material ring that the outer ring surface around each stainless steel annulus described in the present invention is installed is to be made up of magnet steel shading ring of combining through welding manner and magnet steel shading ring muscle.
Structural principle of the present invention and beneficial effect are following:
Dry type permanent magnetism magnetic roller of the present invention comprises respectively mild steel and stainless steel is processed into two kinds of annulus that internal diameter is identical, external diameter is slightly different and thickness is different; With its alternately be set in successively with within on the sleeve of making by the non-magnetic material that matches; Be reprocessed into a homogeneous tube after the welding, accomplish the matrix of magnetic roller; With high energy Nd-Fe-B permanent magnetic fan-shaped magnet 360
oBe evenly arranged in the outer ring surface of annular mild steel, at circumference and direction of principal axis, magnetic pole is all so that-N-S-N-S-alternately pairing is arranged; The magnetic pole that just each magnetic pole is adjacent all is an opposite pole, is all even number after the expansion in length and breadth, and with separating with the non-magnetic material between the adjacent pole; The low-carbon (LC) steel loop becomes the passage of the magnetic flux that permanent magnet sends, and two blocks of adjacent magnet steel of circumferencial direction arbitrarily all constituted magnetic loop, reduced leakage field; Adopt the fan-shaped permanent magnet of big volume simultaneously; And the magnet axial size design is big, can guarantee under certain background magnetic field intensity, to obtain the bigger magnetic field degree of depth.On whole magnetic roller surface; Space magnetic field is periodic distribution along the circumferential direction, is the approximately equivalent Distribution of Magnetic Field vertically, and the axial line of all magnetic field point of maximum intensity forms a rule approximate peak lines of field intensity; During the rotation of magnetic roller; Axially go up each bar approximate peak lines of field intensity and all exhaustively map to the material surface, avoided the effectively shortcoming of dispersed material of the leakage choosing in the ore-dressing practice and traditional magnetic roller to a certain extent, the application of many magnetic poles can guarantee under the situation suitable with the surperficial field intensity of conventional magnetic separator; Because magnetic field gradient is big; Within certain working range, have bigger magnetic field force, said magnetic roller has efficiently utilized the magnetic field effect of fan-shaped permanent magnet, helps to improve the product grade and the rate of recovery.
Description of drawings
Fig. 1 is a magnetic roller overall structure sketch map.
Fig. 2 axially dissects structural representation for Fig. 1's.
Fig. 3 radially dissects structural representation for Fig. 1's.
Fig. 4 is the magnet arrangement partial schematic diagram.
Fig. 5 magnet steel shading ring sketch map.
Fig. 6 magnet steel isolation bar sketch map.
Fig. 7 is that Fig. 5, Fig. 6 make up sketch map.
Fig. 8 is the A-A generalized section of Fig. 7.
Sequence number among the figure: 1, mandrel 2, no magnetic bolt 3, stainless steel integument 4, fan-shaped magnet 5, stainless steel annulus 6, mild steel annulus 7, magnet steel shading ring 8, magnet steel shading ring muscle 9, non-magnetic conduction cylinder 10, ring flange.
The specific embodiment
To combine enforcement row (accompanying drawing) to do below the present invention further describes:
Like Fig. 1, shown in 2; The dry type permanent magnetism magnetic roller that is used for the fine-grained disseminated grain sorting mineral of the present invention; It is characterized in that: said magnetic roller comprises mandrel 1; Be sleeved on the non-magnetic conduction cylinder 9 on the mandrel 1 with the mode with mandrel 1 concentric, spacer sleeve is equipped with stainless steel annulus 5 and mild steel annulus 6 successively on non-magnetic conduction cylinder 9; Outer ring surface around each mild steel annulus 6 is equipped with by several fan-shaped magnets that is provided with at interval 4, at axial direction; Separate through magnet steel shading ring 7 and magnet steel shading ring muscle 8 between adjacent two fan-shaped magnets 4; Magnet steel shading ring 7 is the non-magnetic material with magnet steel shading ring muscle 8; And welding combines (referring to Fig. 5,6,7,8), and this structure has the saving materials, is convenient to the characteristics of machine-shaping; In a circumferential direction; Fill with trapezoidal NULL between adjacent two blocks of magnet steel 4; Several fan-shaped magnets that are provided with at interval 4, trapezoidal NULL body and low-carbon (LC) steel loop 6 constitute magnet ring (referring to Fig. 3), and the outermost layer of said magnetic roller is provided with stainless steel integument 3; Said fan-shaped magnet axially with on the circumferencial direction all is the alternately arrangement of N, the S utmost point whole roller, and magnetic pole occurs in pairs, and the magnetic pole that each magnetic pole is adjacent all is opposite pole (referring to Fig. 2,4); The internal diameter of said non-magnetic conduction cylinder 9 is greater than the external diameter of mandrel 1; Said non-magnetic conduction cylinder 9 two ends equate with the magnetic roller diameter respectively and the ring flange 10 that is inlaid on the mandrel 1 is fixed through no magnetic bolt 2, make whole magnetic circuit compress and fix as one, and constitute complete magnetic roller.
Described fan-shaped magnet 4 can adopt the Hpdc moulding, need not the later stage grinding.
Described magnet steel shading ring 7, magnet steel shading ring muscle 8, trapezoidal NULL body (referring to Fig. 3) can adopt cheap resin, pitch and non-magnetic conductive metal body etc.Described non-magnetic conduction cylinder 9 is non-magnetic materials such as aluminium alloy or austenitic stainless steel with ring flange 10, and stainless steel integument 3 can adopt the following thickness stainless steel materials of 1mm to make.
Claims (3)
1. dry type permanent magnetism magnetic roller that is used for the fine-grained disseminated grain sorting mineral; It is characterized in that: said magnetic roller comprises the magnetic roller core shaft; Be sleeved on the non-magnetic conduction cylinder on the magnetic roller core shaft with the mode with magnetic roller core shaft concentric, spacer sleeve is equipped with stainless steel annulus and mild steel annulus successively on non-magnetic conduction cylinder; Outer ring surface around each mild steel annulus is equipped with the magnet ring that is made up of several fan-shaped magnets that is provided with at interval, NULL body, around the outer ring surface of each stainless steel annulus the non-magnet material ring is installed; The outermost layer of said magnetic roller is provided with the stainless steel integument; Said fan-shaped magnet axially with on the circumferencial direction is the alternately arrangement of N, the S utmost point whole roller, and magnetic pole occurs in pairs, and the magnetic pole that each magnetic pole is adjacent all is an opposite pole.
2. the dry type permanent magnetism magnetic roller that is used for the fine-grained disseminated grain sorting mineral according to claim 1, it is characterized in that: the internal diameter of said non-magnetic conduction cylinder is greater than the external diameter of magnetic roller core shaft; Said non-magnetic conduction cylinder two ends combine with the magnetic roller core shaft through the ring flange that is inlaid on the magnetic roller core shaft respectively, and the equal diameters of the external diameter of said ring flange and whole magnetic roller.
3. the dry type permanent magnetism magnetic roller that is used for the fine-grained disseminated grain sorting mineral according to claim 1 is characterized in that: the non-magnet material ring of installing around the outer ring surface of each stainless steel annulus is to be made up of magnet steel shading ring of combining through welding manner and magnet steel shading ring muscle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110320476XA CN102357410A (en) | 2011-10-20 | 2011-10-20 | Dry-type permanent magnetic roller for separation of fine-disseminated ore |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110320476XA CN102357410A (en) | 2011-10-20 | 2011-10-20 | Dry-type permanent magnetic roller for separation of fine-disseminated ore |
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| CN102357410A true CN102357410A (en) | 2012-02-22 |
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| CN201110320476XA Pending CN102357410A (en) | 2011-10-20 | 2011-10-20 | Dry-type permanent magnetic roller for separation of fine-disseminated ore |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103386362A (en) * | 2012-05-11 | 2013-11-13 | 王士力 | Turbulent- flow orthogonal magnetic field wet magnetic separator |
| CN103465099A (en) * | 2013-09-03 | 2013-12-25 | 宁夏共享集团有限责任公司 | Magnetic roller type chip cleaner |
| CN103657844A (en) * | 2012-09-06 | 2014-03-26 | 财团法人金属工业研究发展中心 | Magnetic roller device and magnetic core shaft thereof |
| CN103934100A (en) * | 2014-04-30 | 2014-07-23 | 大丰市众鑫永磁材料有限公司 | Preferment strong magnetic separation machine |
| CN104874475A (en) * | 2015-06-18 | 2015-09-02 | 胡华虎 | Rotary drum type rear-earth strong-magnetic high-gradient magnetic separator |
| CN105413858A (en) * | 2016-01-11 | 2016-03-23 | 潘静娴 | Magnetic separation device for forming high-density magnetic peak value through small pole pitch |
| CN105730973A (en) * | 2016-04-27 | 2016-07-06 | 岳阳鸿升电磁科技有限公司 | Novel electromagnetic roller |
| CN105833990A (en) * | 2016-05-20 | 2016-08-10 | 湖南三德科技股份有限公司 | Iron removing roller device for sample delivering system |
| CN105855037A (en) * | 2016-04-29 | 2016-08-17 | 宁德卓高新材料科技有限公司 | Metallic impurity removing method and device for ceramic slurry |
| CN106269234A (en) * | 2016-08-12 | 2017-01-04 | 李勇军 | Naked magnetic roller |
Citations (3)
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| JP2001276646A (en) * | 2000-03-28 | 2001-10-09 | Nippon Magnetic Dressing Co Ltd | Magnetic roller and magnetic separator using the same |
| JP2003080109A (en) * | 2001-09-12 | 2003-03-18 | Nippon Magnetic Dressing Co Ltd | Magnetic separator |
| CN101406860A (en) * | 2008-11-27 | 2009-04-15 | 潘志强 | High-gradient intense magnetic field horizontal composite magnetic gathering roller |
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2011
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Patent Citations (3)
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| JP2001276646A (en) * | 2000-03-28 | 2001-10-09 | Nippon Magnetic Dressing Co Ltd | Magnetic roller and magnetic separator using the same |
| JP2003080109A (en) * | 2001-09-12 | 2003-03-18 | Nippon Magnetic Dressing Co Ltd | Magnetic separator |
| CN101406860A (en) * | 2008-11-27 | 2009-04-15 | 潘志强 | High-gradient intense magnetic field horizontal composite magnetic gathering roller |
Non-Patent Citations (1)
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103386362A (en) * | 2012-05-11 | 2013-11-13 | 王士力 | Turbulent- flow orthogonal magnetic field wet magnetic separator |
| CN103386362B (en) * | 2012-05-11 | 2016-08-24 | 王士力 | Turbulent flow quadrature field wet magnetic separator |
| CN103657844A (en) * | 2012-09-06 | 2014-03-26 | 财团法人金属工业研究发展中心 | Magnetic roller device and magnetic core shaft thereof |
| CN103465099A (en) * | 2013-09-03 | 2013-12-25 | 宁夏共享集团有限责任公司 | Magnetic roller type chip cleaner |
| CN103934100A (en) * | 2014-04-30 | 2014-07-23 | 大丰市众鑫永磁材料有限公司 | Preferment strong magnetic separation machine |
| CN104874475A (en) * | 2015-06-18 | 2015-09-02 | 胡华虎 | Rotary drum type rear-earth strong-magnetic high-gradient magnetic separator |
| CN105413858A (en) * | 2016-01-11 | 2016-03-23 | 潘静娴 | Magnetic separation device for forming high-density magnetic peak value through small pole pitch |
| CN105730973A (en) * | 2016-04-27 | 2016-07-06 | 岳阳鸿升电磁科技有限公司 | Novel electromagnetic roller |
| CN105855037A (en) * | 2016-04-29 | 2016-08-17 | 宁德卓高新材料科技有限公司 | Metallic impurity removing method and device for ceramic slurry |
| CN105833990A (en) * | 2016-05-20 | 2016-08-10 | 湖南三德科技股份有限公司 | Iron removing roller device for sample delivering system |
| CN105833990B (en) * | 2016-05-20 | 2019-07-19 | 湖南三德科技股份有限公司 | It is a kind of to remove iron roller device for sample conveyance system |
| CN106269234A (en) * | 2016-08-12 | 2017-01-04 | 李勇军 | Naked magnetic roller |
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Application publication date: 20120222 |