CN201613174U - Vertical-ring magnetic separator used for removing iron from fly ash - Google Patents

Vertical-ring magnetic separator used for removing iron from fly ash Download PDF

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Publication number
CN201613174U
CN201613174U CN2010201169372U CN201020116937U CN201613174U CN 201613174 U CN201613174 U CN 201613174U CN 2010201169372 U CN2010201169372 U CN 2010201169372U CN 201020116937 U CN201020116937 U CN 201020116937U CN 201613174 U CN201613174 U CN 201613174U
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China
Prior art keywords
vertical
magnetic separator
ring magnetic
ring
yoke
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Expired - Lifetime
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CN2010201169372U
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Chinese (zh)
Inventor
王永旺
董宏
杨殿范
吴永峰
孙双
李旭
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China Shenhua Energy Co Ltd
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China Shenhua Energy Co Ltd
Shenhua Zhungeer Energy Co Ltd
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Abstract

The utility model discloses a vertical-ring magnetic separator used for removing iron from fly ash. The vertical-ring magnetic separator comprises a rotating ring, an induction medium, an upper iron yoke, a lower iron yoke, an exciting coil, a feed port, an ore tailing hopper and a flushing device, wherein the induction medium is mounted inside the rotating ring; the exciting coil is arranged around the upper and the lower iron yokes, so that the upper and the lower iron yokes act as a pair of magnetic poles capable of generating a magnetic field in the vertical direction; the upper and the lower iron yokes are arranged on the inner and the outer sides below the rotating ring; the induction medium has a plurality of layers of steel plate meshes, each steel plate mesh is woven by wires, and the margins of the wires have ridge-shaped sharp corners; the upper iron yoke is connected with the feed port; the lower iron yoke is connected with the ore tailing hopper that is used for discharge; and the flushing device is positioned above the rotating ring. With the use of the vertical-ring magnetic separator, the iron removal effect is increased by 20%, the effective iron removal rate is increased to 80% from the original 60%, the pressure of removing iron from the solution in the next procedure is relieved, the production cost is reduced and the production efficiency is increased.

Description

The vertical-ring magnetic separator that is used for deferrization of pulverized coal ash
Technical field
The utility model relates to a kind of magnetic plant, relates in particular to a kind of vertical-ring magnetic separator that is used for deferrization of pulverized coal ash.
Background technology
At present upright ring on structural design at be magnetic separation rather than deironing, the magnetic medium that original equipment adopted is the cylinder shape medium rod, when being used for deironing now, because the gap between the dielectric rod is bigger, in the deferrization of pulverized coal ash process, have the particle that the part granularity is tiny, magnetic is more weak and be not adsorbed, reduce de-ferrous effect through magnetizing mediums.
The first, its application target of present vertical-ring magnetic separator mainly is to select iron in weak-magnetic iron ore, finally need select the iron ore with certain grade, mainly is at selecting iron rather than deironing in structure and magnetic field intensity design therefore.Upright ring type magnetic separator adopts round bar shape stainless steel medium in the design of magnetic medium, simultaneously, in the magnetic separation process, for the purpose of selecting iron, the design pitch between the medium is bigger, so that make the iron ore can the blocking medium rod.And if in the magnetically separating and removing ion from fly ash process, excessive media spacing will make the particle tiny, that magnetic is more weak relatively in the flyash see through medium and do not adsorbed by medium, thereby reduce the effect of magnetic separation.
The second, traditional selecting in the iron application, feed and discharge method adopt the mode that goes up the feed bottom discharge.But in the deferrization of pulverized coal ash process, because the magnetic of iron mineral is very weak, if take the mode of feed, iron mineral might see through medium and not be adsorbed under the gravity effect, reduced the effect of iron removal by magnetic separation.
Therefore, be necessary to design a kind of novel magnetic plant, so that overcome above-mentioned defective.
The utility model content
At the defective of prior art, the purpose of this utility model provides the magnetic plant of the iron ore in a kind of thorough removal flyash.
The vertical-ring magnetic separator that the utility model is used for deferrization of pulverized coal ash comprises: change, induction medium, upper yoke, lower yoke, magnet exciting coil, charging aperture, mine tailing bucket and flushometer.Wherein, induction medium is installed in the change, magnet exciting coil is arranged on around upper yoke and the lower yoke, so that upper yoke and lower yoke become a pair of generation vertical direction field pole, described upper yoke and lower yoke are separately positioned on interior, the outer both sides of ring of ring of change below, wherein, described induction medium is the composite steel expanded metals, every layer of expanded metal lath weaved into by the silk stalk, the edge of described silk stalk has rib shape wedge angle, described upper yoke is connected with charging aperture, and described lower yoke is connected with the mine tailing bucket that is used for discharging, and described flushometer is positioned at the change top.
Preferably, described charging aperture is connected with the sidepiece of upper yoke.
Preferably, described vertical-ring magnetic separator also comprises cooling device, and described cooling device is arranged on all pressures chamber water jacket around the magnet exciting coil.
Preferably, described expanded metal lath is made by 1Cr17.
Preferably, described magnet exciting coil is a double glass fiber bag enameled aluminium flat wire solenoid.
Preferably, the dielectric layer spacing of expanded metal lath is 2-5mm.
Preferably, the dielectric layer spacing of expanded metal lath is 3mm.
Preferably, the thickness 0.8-1.5mm of expanded metal lath, sizing grid are 3mm * 8mm-8mm * 15mm, silk stalk width 1-2mm.
Preferably, the thickness 1mm of expanded metal lath, sizing grid are 5mm * 10mm, silk stalk width 1.6mm.
Preferably, described vertical-ring magnetic separator also comprises pulsing mechanism, and described pulsing mechanism links to each other with the mine tailing bucket by the rubber eardrum.
Adopt magnetic plant of the present utility model, the iron removal effect has improved more than 20%, and effective clearance of iron brings up to 80% by original 60%, and this has greatly alleviated the pressure of deironing in the subsequent technique solution, thereby reduced production cost, improved production efficiency.
Description of drawings
Fig. 1 is the structural representation that the utility model is used for the vertical-ring magnetic separator of deferrization of pulverized coal ash;
Fig. 2 is as the structural representation of the expanded metal lath of induction medium in the utility model;
Fig. 3 (a) and (b) are the analog computation design sketch that induced field strength changes with straight line in the induction region when adopting expanded metal lath as induction medium.
The specific embodiment
As shown in Figure 1, the vertical-ring magnetic separator that the utility model is used for deferrization of pulverized coal ash comprises: change 101, induction medium 102, upper yoke 103, lower yoke 104, magnet exciting coil 105, charging aperture 106 and mine tailing bucket 107 also comprise pulsing mechanism 108 and flushometer 109.
Change 101 is the annular carrier, wherein is loaded with induction medium 102, during change 101 rotations, drives the motion of matter of induction medium 102 and induction medium 102 absorption, so that finish the material sorting.Change 101 can be made by any suitable material, for example carbon steel etc.
Motor or other drive units can provide power for change 101, make change 101 to rotate according to setting speed.Preferably, in preferred implementation of the present utility model, change 101 velocities of rotation are continuously adjustable, can regulate the change rotary speed according to different material or the different initial conditions of material of the same race, so that reach the optimization process effect.
When parameters such as the iron-holder of material or treating capacity are lower than predetermined value, adopt lower rotating speed, for example 3 rev/mins, ferromagnetism impurity and magnetic field are fully acted on, and be adsorbed to induction medium and select on the net.Can also reduce non magnetic ore (flyash) like this and sneak in the concentrate, improve concentrate yield.
Induction medium 102 is installed in the change, the magnetic field that magnet exciting coil 105 produces makes upper yoke 103 and lower yoke 104 become a pair of generation vertical direction field pole, upper yoke 103 and lower yoke 104 are arranged on the inside and outside both sides of change 101 belows, so that change 101 vertical rotating between magnetic pole.When change 101 rotations, the induction medium 102 in the change 101 can be through the pole pair magnetization deironing of upper yoke 103 and lower yoke 104 formations.
In preferred implementation of the present utility model, described induction medium 102 is preferably the composite steel expanded metals.Expanded metal lath is made by stainless steel, is preferably made by 1Cr17.Every layer of expanded metal lath weaved into by the silk stalk, and grid is a rhombus.The edge of described silk stalk has rib shape wedge angle, and described upper yoke 103 is connected with charging aperture 106, and described lower yoke 104 is connected with the mine tailing bucket 107 that is used for discharging.
Because the edge as the expanded metal lath of induction medium 102 is an angular, therefore, the most advanced and sophisticated magnetic field of medium is stronger, thereby produces better magnetic separation effect.
Preferably, in the utility model, the spacing owing to dwindling between the induction medium layer 102 can make the direct contact induction medium 102 of fly ash grain, thereby the phenomenon of having avoided magnetic-particle to fail to remove through medium takes place.The dielectric layer spacing of expanded metal lath is 2-5mm.More preferably, the dielectric layer spacing of expanded metal lath is 3mm.
In the utility model, magnet exciting coil 105 is a double glass fiber bag enameled aluminium flat wire, and described double glass fiber bag enameled aluminium flat wire is to be solid conductor, hollow copper tubing solenoid with respect to traditional has improved dutycycle greatly, has strengthened poly-magnetic effect, improve Distribution of Magnetic Field, and reduced power consumption.Magnet exciting coil 105 electric currents adopt continuous adjustable control, thereby magnetic field is also adjustable continuously.
Preferably, the vertical-ring magnetic separator that the utility model is used for deferrization of pulverized coal ash also comprises pulsing mechanism 108, and described pulsing mechanism 108 links to each other with mine tailing bucket 107 by rubber eardrum 111.Described pulsing mechanism can be realized that pulsing mechanism 108 links to each other with mine tailing bucket 107 by eccentric rod gear, moves back and forth thereby the alternating force that pulsing mechanism 108 is produced promotes rubber eardrum 111, can be so that the ore pulp in the mine tailing bucket 107 produces pulsation.
Flushometer 109 is positioned at the top of change 101, is used for utilizing current that magnetic material is poured the concentrate bucket.Flushometer 109 can be various suitable baths, spray equipment, for example shower nozzle, water pipe etc.
Described charging aperture 106 is connected with the sidepiece of upper yoke 103, so that flyash is from the sidepiece inflow of change.Charging aperture 106 can make hopper or feed pipe.Be used to enter upper yoke 103 with less drop, avoided magnetic-particle owing to the phenomenon that the gravity effect sees through induction medium 102 takes place, thereby improved the effect of magnetic separation removal of impurities into the charging aperture 106 in ore deposit.
Preferably, described vertical-ring magnetic separator also comprises cooling device 112, and described cooling device 112 is arranged on around the magnet exciting coil, is used to reduce the operating temperature of magnet exciting coil, and described cooling device is for all pressing the chamber water jacket.
When producing the vertical-ring magnetic separator work of high-intensity magnetic field, magnet exciting coil 105 can produce a large amount of heats, might cause that coil is overheated to be burnt, and this is to the maximum hidden danger of magnetic separator harm.How can better these heats be come out, the temperature of coil is reduced as much as possible, be technical barrier always.The utility model adopts all presses the chamber water jacket as cooling device, has avoided the various drawbacks in the type of cooling in the past, has guaranteed the device security steady running.
All press the chamber water jacket preferably to adopt stainless steel material to make, thus less scaling.Owing to all install at the Inlet and outlet water place of water jacket and all to press the chamber, the described chamber of all pressing has guaranteed water each layer water jacket of flowing through equably, and is full of everywhere in cover.Thereby prevent the short out road of partial water, the influence heat radiation.The water channel cross-sectional area of every layer of water jacket is very big, can avoid incrustation scale to stop up fully, even there is a place to stop up, does not also influence the proper flow of recirculated water in the water jacket.And water jacket closely contacts with the coil large tracts of land, most of heat that coil produces can be taken away by current.
All press the chamber water jacket to compare with common hollow copper tubing heat radiation, the radiating efficiency height, winding temperature rise is low, and the equipment exciting power is low.At rated exciting current is under the situation of 40A, compares with the magnetic separator that adopts common hollow copper tubing heat radiation, and exciting power can be reduced to 21kw by 35kw.
When utilizing magnetic plant of the present utility model to work, the ore pulp of charging from sidepiece along upper yoke 103 slit flow through change 101, because the induction medium 102 in the change 101 is magnetized in background magnetic field, induction medium 102 surfaces form the high magnetic field of gradient, in the ore pulp magnetic-particle under the effect of this high magnetic field sorption on induction medium 102 surfaces, and with change 101 rotations, and brought to the no field regions at change 101 tops, by flushometer 109 baths that are arranged in the top magnetic material is poured the concentrate bucket again, non-magnetic particle then flows in the mine tailing bucket 107 along the slit of lower yoke 104, and then is discharged by the mine tailing mouth of mine tailing bucket 107.
In embodiment 1 of the present utility model:
Background magnetic field intensity 12000Gs, exciting current 40A, the material of expanded metal lath is 1Cr17, and the dielectric layer spacing of expanded metal lath is 3mm, thickness 1mm, sizing grid 5mm * 10mm, silk stalk width 1.6mm, corner angle are directed upwardly, at this moment, netted medium node field intensity can reach 22000Gs, improves 20% than traditional vertical change induction type wet method intensity magnetic separator.
Embodiment 2:
Background magnetic field intensity 12000Gs, exciting current 40A, the material of expanded metal lath is 1Cr17, the dielectric layer spacing of expanded metal lath is 2mm, thickness 1mm, sizing grid 3mm * 8mm, silk stalk width 1mm, corner angle are directed upwardly, and at this moment, netted medium node field intensity can reach 20000Gs.
Embodiment 3:
Background magnetic field intensity 12000Gs, exciting current 50A, the material of expanded metal lath is 1Cr17, the dielectric layer spacing of expanded metal lath is 5mm, thickness 1.5mm, sizing grid 5mm * 10mm, silk stalk width 2mm, corner angle are directed upwardly, and at this moment, netted medium node field intensity can reach 22000Gs.
The expanded metal lath medium is compared with bar-shaped medium, and the surface area of medium improves more than 5 times, and the attached ability of magnetic increases greatly, and the probability that magnetisable material is adsorbed increases greatly, and the magnetic field intensity of expanded metal lath edges and corners induction also improves than bar-shaped medium greatly with gradient.
Adopt the utility model to be used for the vertical-ring magnetic separator of deferrization of pulverized coal ash, the Distribution of Magnetic Field figure behind the using steel plate net induction medium layer is shown in Fig. 3 (a).The little parallelogram of each file is represented the cross section of one deck medium net, has simulated the situation of the magnetic field medium net of 5 layers of medium net among the figure, and the cross section of the grid that the silk stalk forms is a parallelogram.Little parallelogram with the centre is an example, as shown in the figure, has made a feature straight line on this parallelogram, and Fig. 3 (b) shows the Changing Pattern of analog computation induced field strength with straight line.As can be seen, its most advanced and sophisticated induced field strength that produces is the highest, can reach 22000Gs, i.e. 2.2T.
It is to adopt Ansoft Maxwell 10 softwares to realize that above-mentioned magnetic simulation calculates.AnsoftMaxwell 10 mainly is based upon on the maxwell equation basis and carries out finite element analysis for the emi analysis software of Ansoft company issue, is powerful electromagnetic-field simulation instrument.Be mainly used to analysis of two-dimensional and three-dimensional electromagnetic component, for example motor, transformer, driver and other electric and electromechanical equipments, its application spreads all over automobile, military affairs, aerospace and commercial Application etc.
Although the utility model is to be described by above-mentioned preferred implementation, its way of realization is not limited to above-mentioned embodiment.Should be realized that: under the situation that does not break away from the utility model purport, those skilled in the art can make different variations and modification to the utility model.

Claims (10)

1. vertical-ring magnetic separator that is used for deferrization of pulverized coal ash, it is characterized in that, described vertical-ring magnetic separator comprises: change, induction medium, upper yoke, lower yoke, magnet exciting coil, charging aperture, mine tailing bucket and flushometer, induction medium is installed in the change, magnet exciting coil is arranged on around upper yoke and the lower yoke, so that upper yoke and lower yoke become a pair of generation vertical direction field pole, described upper yoke and lower yoke are separately positioned in the ring of change below, encircle outer both sides, wherein, described induction medium is the composite steel expanded metals, every layer of expanded metal lath weaved into by the silk stalk, the edge of described silk stalk has rib shape wedge angle, described upper yoke is connected with charging aperture, and described lower yoke is connected with the mine tailing bucket that is used for discharging, and described flushometer is positioned at the change top.
2. vertical-ring magnetic separator according to claim 1 is characterized in that, described charging aperture is connected with the sidepiece of upper yoke.
3. vertical-ring magnetic separator according to claim 1 is characterized in that described vertical-ring magnetic separator also comprises cooling device, and described cooling device is arranged on all pressures chamber water jacket around the magnet exciting coil.
4. according to any one described vertical-ring magnetic separator among the claim 1-3, it is characterized in that described expanded metal lath is made by 1Cr17.
5. according to any one described vertical-ring magnetic separator among the claim 1-3, it is characterized in that described magnet exciting coil is a double glass fiber bag enameled aluminium flat wire solenoid.
6. according to any one described vertical-ring magnetic separator in the claim 1, it is characterized in that the dielectric layer spacing of expanded metal lath is 2-5mm.
7. vertical-ring magnetic separator according to claim 6 is characterized in that, the dielectric layer spacing of expanded metal lath is 3mm.
8. vertical-ring magnetic separator according to claim 6 is characterized in that, the thickness 0.8-1.5mm of expanded metal lath, sizing grid are 3mm * 8mm-8mm * 15mm, silk stalk width 1-2mm.
9. vertical-ring magnetic separator according to claim 8 is characterized in that, the thickness 1mm of expanded metal lath, sizing grid are 5mm * 10mm, silk stalk width 1.6mm.
10. according to any one described vertical-ring magnetic separator among the claim 1-3, it is characterized in that described vertical-ring magnetic separator also comprises pulsing mechanism, described pulsing mechanism links to each other with the mine tailing bucket by the rubber eardrum.
CN2010201169372U 2010-02-23 2010-02-23 Vertical-ring magnetic separator used for removing iron from fly ash Expired - Lifetime CN201613174U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011103803A1 (en) * 2010-02-23 2011-09-01 中国神华能源股份有限公司 Vertical ring magnetic separator for de-ironing of pulverized coal ash and method using the same
CN102172561A (en) * 2010-02-23 2011-09-07 中国神华能源股份有限公司 Vertical ring magnetic separator for removing iron from fly ash

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011103803A1 (en) * 2010-02-23 2011-09-01 中国神华能源股份有限公司 Vertical ring magnetic separator for de-ironing of pulverized coal ash and method using the same
CN102172561A (en) * 2010-02-23 2011-09-07 中国神华能源股份有限公司 Vertical ring magnetic separator for removing iron from fly ash
US8505735B2 (en) 2010-02-23 2013-08-13 China Shenhua Energy Company Limited Vertical ring magnetic separator for de-ironing of pulverized coal ash and method using the same
CN102172561B (en) * 2010-02-23 2014-06-25 中国神华能源股份有限公司 Vertical ring magnetic separator for removing iron from fly ash

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ASS Succession or assignment of patent right

Free format text: FORMER OWNER: SHENHUA ZHUNGER ENERGY CO., LTD.

Effective date: 20111206

C41 Transfer of patent application or patent right or utility model
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Effective date of registration: 20111206

Address after: 100011 Beijing Dongcheng District, West Binhe Road, No. 22

Patentee after: China Shenhua Energy Co., Ltd.

Address before: 100011 Beijing city Dongcheng District No. 16 Andrew intercontinental 4 storey building

Co-patentee before: Shenhua Zhunger Energy Co., Ltd.

Patentee before: China Shenhua Energy Co., Ltd.

CX01 Expiry of patent term

Granted publication date: 20101027

CX01 Expiry of patent term