CN86106686A - Magnetic field intensity is a magnetic separator in the permanent-magnet chamber type of 5000-9000 oersteds - Google Patents
Magnetic field intensity is a magnetic separator in the permanent-magnet chamber type of 5000-9000 oersteds Download PDFInfo
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- CN86106686A CN86106686A CN 86106686 CN86106686A CN86106686A CN 86106686 A CN86106686 A CN 86106686A CN 86106686 CN86106686 CN 86106686 CN 86106686 A CN86106686 A CN 86106686A CN 86106686 A CN86106686 A CN 86106686A
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Abstract
The present invention is a new equipment in the magnetic separation technique.Technical characterictic of the present invention is to utilize the multiple rare-earth permanent magnet of high magnetic energy to take as the leading factor, with the strontium calcium ferrite is base, the open magnetic circuit magnetic system that forms composite permanent magnet according to the magnetic Circuit Design principle, especially repeller utilizes the magnetic focusing technology again dexterously, solved and improved the magnetic field intensity of permanent-magnet drum type magnetic separator and the key technology of gradient, the work magnetic field of making reaches 5000～9000 oersteds.The present invention is applicable to iron ore and other ore of the medium magnetic of sorting.
Description
Technical field under the present invention is the magnetic dressing in the electromagnetic separation technology.
In the prior art, the magnetic circuit form is the very universal a kind of weak magnetic separation equipments of handling strongly magnetic mineral of at present domestic and international mine magneticore-dressing plant for the permanent-magnet drum type magnetic separator of open circuit magnetic system has come out decades.Typical case's invention of the weak magnetic separator of this permanent-magnet chamber type is United States Patent (USP) 3,168, No. 464 and 3,489, No. 280." magnetoelectricity ore dressing " book that Northeast Polytechnic College ore dressing teaching and research room writes has elaboration in more detail to the technical characteristic of this type.
The major advantage of the weak magnetic separator of permanent-magnet chamber type is: equipment is simple, treating capacity is big, uses and easy to maintenance and the saving energy etc.The major defect of this type is: the main pole of open magnetic circuit and interpolar repeller always are uses so-called ceramic mould permanent magnet, i.e. barium ferrite and strontium calcium ferrite permanent magnet design and manufacturing.This class permanent-magnet material is a kind of low magnetic buble material, and therefore, the tube skin surface work magnetic field intensity of this type only reaches about 1700 oersteds, can only be in order to the stronger mineral of sorting magnetic.
In the magnetic separation technology field, people know that magnetic field intensity and the gradient by strengthening magnetic separator increases this technological approaches of magnetic field force (HgradH), improves separating effect.Be the advantage of performance permanent-magnet drum type magnetic separator, improve the low weakness of magnetic field intensity, carried out a lot of useful researchs both at home and abroad and repaid examination.(1) the excitatory magnetic field that strengthens of electricity consumption, the direction that combines with electromagnetism towards permanent magnetism develops, and its representative invention is United States Patent (USP) 4,051,023 and Russian Patent 782,872.(2) add ore dressing medium and increase the outer magnetizing equipment that gives of tube, its representative invention is respectively United States Patent (USP) 3,690, and 454 and Russian Patent 973,165.(3) strengthen main pole with high performance rare-earth permanent magnet, this respect work is that China units concerned carried out in the seventies later stage, principal character is the main pole that cerium cobalt copper rare-earth permanent magnet is used to strengthen the weak magnetic separator of permanent-magnet chamber type, makes to select the district's magnetic field intensity peak value of scanning of machine to reach 2500 oersteds.This is a gratifying progress.But the type of this level still is within the scope of weak magnetic separator.Above-mentioned research with repay examination, though, the magnetic field intensity of permanent-magnet drum type magnetic separator is significantly improved, can't make permanent-magnet chamber type select machine to be used to handle the medium magnetic mineral of selective oxidation through many-sided effort.
Purpose of the present invention is exactly on the basis of existing technology, subject matter for magnetic separator existence a little less than the solution permanent-magnet chamber type, magnetic circuit to the core-opening magnetic system of magnetic separator has carried out improving design, being designed to by the strontium calcium ferrite by the single main pole improvement of original strontium calcium ferrite is matrix, it with the neodymium iron boron built-up magnet main pole that the rare-earth permanent magnet of the various modern high magnetic energy of representative is taken as the leading factor, utilize high magnetic again dexterously, the rare-earth permanent magnet of high HCJ and strontium calcium ferrite are done compound repeller, strengthened the magnetic focusing effect of various magnets in the magnetic system, changed shape, made the magnetic field intensity peak value of the drum magnetic separator of opening magnetic system reach the middle magnetic field range of 5000-9000 oersted.Thereby, use in this novel permanent-magnet chamber type magnetic separator can simplify beneficiation flowsheet, increase the disposal ability and the Armco magnetic iron rate of recovery, enlarge the sorting scope of this type, can handle medium magnetic mineral as the processing strongly magnetic mineral.
The main contents of magnetic separator and technical characterictic are in the permanent-magnet chamber type of the present invention:
(1) main pole of opening magnetic system is that the rare-earth permanent magnet of the various modern high magnetic energy of representative is taken the composite pole of forming as the leading factor by strontium calcium ferrite matrix with the neodymium iron boron.
The permanent magnet that various performances are different reasonably is combined on the diverse location in the same magnetic system, and makes it all can give play to the magnetic characteristic of material separately effectively, and this is one of essence spirit of the present invention.The permanent magnet that the present invention is used, one of major parameter of its technical characterictic are that maximum magnetic energy product (BH) the maX strontium calcium ferrite material of material is 3.2～3.5 * 10
6GsOe; The Nd-Fe-B rare earth permanent magnetic material in one of " world ten big science and technology progress " is 30～40 * 10 to classify 1984 as
6GsOe is more than ten times of strontium calcium ferrite; Other rare earth permanent-magnetic material is as cerium cobalt copper, samarium praseodymium cobalt and 2: 17 types etc., because of its model does not coexist 10～25 * 10
6About GsOe.
The structure of magnetic separator as shown in Figure 1 in the permanent-magnet chamber type.This is that a kind of half adverse current type wet type is selected machine.As long as change to give the ore deposit and unload the ore deposit member, just can become downstream-type and the adverse current type wet type is selected machine.Change to give, unload ore deposit member and magnetic and be angle and can become dry type yet and select machine, these do not relate to content of the present invention.
In the permanent-magnet chamber type magnetic of magnetic separator be basic structure as shown in Figure 2.It is typical open magnetic circuit five magnetic poles architecture (also can be designed to three utmost points, four utmost points or multistage according to different purposes).It is cornerite that magnetic pole 16-24 forms certain magnetic, forms one section cambered surface, and wherein magnetic pole 16,18,20 is for scanning district's magnetic pole, and 22 is that 24 is the drying zone magnetic pole to the mining area magnetic pole.According to the ore-dressing technique requirement, the magnetic field intensity of magnetic separator upwards is designed to certain horizontal gradient in the week of cylinder in the cartridge type.Magnetic field, district is the strongest scanning, and gives the mining area stronger, and drying zone is general.Arrange like this and be convenient to flow to the more weak ore particle of magnetic of overflow for the ore deposit lower box part, sucted cylinder surface scanning the district, carry by in the continuous rotary course to mining area and drying zone in tube skin rotation, unlikelyly the ore deposit phenomenon occurs falling, and be convenient to shirk at the ore deposit point ore particle that unloads of drying zone end.Therefore, scanning 16,18,20 3 main poles in district all is on the matrix of strontium calcium ferrite, middle with the Fe-B rare-earth permanent magnet of cerium cobalt copper rare-earth permanent magnet outermost layer with high magnetic energy, is composited.Giving mining area magnetic pole 22 and drying zone magnetic pole 24 is strontium calcium ferrite matrix and the compound composition of cerium cobalt copper rare-earth permanent magnet.And Fig. 2 also obviously illustrates, and drying zone magnetic pole 24 is than having reduced the compositely proportional of cerium cobalt copper rare earth permanent magnet for mining area magnetic pole 22.
Magnetic is that 16-24 all is fixed on the very high electrical pure iron magnetic conductance plate 5 of permeability, and the magnetic conductance plate is fixed on the support 6.The magnetic conductance plate is the internal path of the magnetic flux that sends of each magnetic pole, and its effect is the magnetic coupling of having strengthened between each magnetic pole, has reduced the internal system leakage field.
The arrow of Fig. 2 is the direction of magnetization of each magnetic pole, and the direction of arrow indication is the N utmost point.The polarity of magnetic pole 16-24 is alternately arrangement of N, S along the circumferential direction, and same utmost point polarity vertically is identical.
(2) utilize high magnetic, high HCJ rare-earth permanent magnet and strontium calcium ferrite compound, do the repeller between each magnetic pole.
Utilize permanent magnet to stop the magnetic line of force to change the field shape and the depth of interaction of permanent magnet system to the distribution of a certain direction according to the magnetics basic principle that homopolarity repels, add rare-earth permanent magnet and do the repeller of magnetic pole, strengthening the magnetic focusing effect is another essence spirit of the present invention.
The repeller basic structure of each magnetic pole as shown in Figure 2. Composite pole 17,19,21,23 is the main repeller between each magnetic pole.And be the interior repeller of scanning district's magnetic pole at the magnet of interior four the band arrows of magnetic pole 16,18,20.The polarity of repeller is shown in arrow among Fig. 2, and the polarity of main repeller is identical with the polarity of the magnetic pole of institute adjacency.Because the contribution of homopolar-repulsion and repeller magnet magnetic flux, produce the peak value of magnetic field intensity at magnetic pole and repeller intersection.Simultaneously, the pole pair repeller also exists the huge demagnetizing effect and the possibility of magnetic reversal.The important technological parameters of anti-external magnetic field demagnetization of permanent magnet and anti-magnetic reversal effect is the HCJ of material
JH
CTherefore the present invention is at the strongest main repeller 17 of scanning the district of magnetic field intensity, 19, samarium praseodymium cobalt or 2: 17 type rare-earth permanent magnets of the high HCJ of high magnetic selected on 21 top for use, the HCJ of these two kinds of materials is all greater than 15000 oersteds, and other parts adopt neodymium iron boron, cerium cobalt copper and strontium calcium ferrite to carry out compound.Repeller top is concordant with the pole edge of institute's adjacency, the repeller bottom to surpass on the magnetic pole the lower limb of compound rare-earth permanent magnet, to reduce the inner leakage field of magnetic pole as far as possible.Be lower than the reason of scanning the magnetic field intensity of distinguishing magnetic pole for mining area magnetic pole 22 and drying zone magnetic pole 24 magnetic field intensities according to the described master-plan in front, main repeller 23 tops select that Fe-B rare-earth permanent magnet and cerium cobalt copper and strontium calcium ferrite are compound just to satisfy the technical characteristic requirement for use, and the interior repeller of scanning district's magnetic pole designs for further strengthening scanning district's magnetic field peak value.
Content of the present invention, technical characteristic and advance are understood that.What here should particularly point out is that local detail such as the number of magnetic poles that changes magnetic system, disk pack angle, appearance and size and magnetic are the used type that selects machine etc. and magnetic structure form and magnetic field intensity do not have material alterations, all do not break away from spirit of the present invention, this point will be further clear and definite in the claims.
Magnetic separator compared with prior art in the permanent-magnet chamber type of the present invention, advantage that is had and effect are that the work magnetic field intensity of permanent-magnet drum type magnetic separator is brought up to 9000 oersteds, thereby can replace the magnetic separator that magnetic separator and permanent magnetism combine with electromagnetism in the electromagnetism of other pattern.So just make the medium magnetic mineral of sorting realize that the sorting mode is simple, it is big, safe and reliable to handle the ore deposit amount, the rate of working continuously height, operating maintenance is convenient.Make magnetic separator in the permanent-magnet chamber type become the ideal equipment of magnetic mineral such as choosing.Its appearance can be simplified mineral processing circuit undoubtedly, improves the ability of the medium magnetic mineral of sorting, increases iron recovery.This machine can be used for making beneficiation flowsheet reasonable before the SHP type intensity magnetic separator, can solve dielectric-slab again and stop up.Also can be used for various beneficiation flowsheets and throw tail, reduce the iron-holder of mine tailing.This machine is little because of volume, does not have other auxiliary device, and floor space is little, is particularly conducive to the transformation of the beneficiation flowsheet of selecting factory always.The use of this machine can be saved a large amount of electric energy in addition.
Description of drawings
Fig. 1: the structure chart of magnetic separator in the half adverse current type permanent-magnet chamber type.
1-sparge pipe 7-cell body
2-permanent-magnetic cylindrical 8-gives the ore deposit case
3-magnetic is that 9-unloads the mineral water pipe
4-base plate 10-frame
5-magnetic conductance plate 11-transfer
The 6-support
Fig. 2: magnetic separator magnetic is the basic structure schematic diagram in the permanent-magnet chamber type.
12-strontium calcium ferrite
13-cerium cobalt copper rare-earth permanent magnet
The 14-Fe-B rare-earth permanent magnet
15-samarium praseodymium cobalt rare-earth permanent magnet
5-magnetic conductance plate
The 6-frame
16,18,20-scans district's magnetic pole
22-gives the mining area magnetic pole
24-drying zone magnetic pole
17,19,21,23-master's repeller
↑-arrow is the direction of magnetization of each magnetic pole or magnet.
Fig. 3: the best magnetic of magnetic separator is the basic structure schematic diagram in the permanent-magnet chamber type.
12-strontium calcium ferrite
13-cerium cobalt copper rare-earth permanent magnet
The 14-Fe-B rare-earth permanent magnet
15-samarium praseodymium cobalt rare-earth permanent magnet
5-magnetic conductance plate
The 6-frame
16,18,20-scans district's magnetic pole
22-gives the mining area magnetic pole
24-drying zone magnetic pole
17,19,21,23-master's repeller
↑-arrow is the direction of magnetization of each magnetic pole or magnet.
Realize that best way of the present invention is that to adopt the magnetic of Fig. 3 be basic structure.Magnetic structure shown in Figure 3 is better than the structure of Fig. 2.Main difference between them is:
(1) each pole surface of Fig. 3 structure has been covered with rare-earth permanent magnet and has given mining area magnetic pole 22, and drying zone magnetic pole 24 has all used the neodymium iron boron of high magnetic energy to form compound magnetic system, so each magnetic pole and magnetic field intensity obviously increases.
(2) the main repeller of each of Fig. 3 structure has all been strengthened the magnetic focusing effect, all be provided with the trapezoidal neodymium iron boron magnetic body of the main pole direction of magnetization unanimity that the direction of magnetization is adjacent in the high HCJ rare-earth permanent magnet bottom of main repeller 17,19,21, its effect is not only to have strengthened repulsive interaction but also make the radial magnetic force line that itself sends directly strengthen the magnetic field intensity peak value.
These improve to make undoubtedly and adopt the middle magnetic separator magnetic field intensity and the gradient of Fig. 3 structure further to increase, and make it be more suitable for sorting of medium magnetic mineral.
Claims (13)
1, by permanent-magnetic cylindrical, magnetic system, cell body, the magnetic conductance plate, support, sparge pipe is given the ore deposit case, unloads the mineral water pipe, base plate, magnetic separator in the permanent-magnet chamber type that transfer and frame are formed.It is characterized in that its magnetic system.This magnetic system is a base with the strontium calcium ferrite all, the main pole that the composite permanent magnet of taking as the leading factor with multiple rare-earth permanent magnet is formed and the multipole opening magnetic system of main repeller; Or the main pole of all forming with the composite permanent magnet of multiple rare-earth permanent magnet and the multipole opening magnetic system of main repeller.It is that 5000 oersteds are to 9000 oersteds that such magnetic ties up to the magnetic field intensity peak value of scanning district's generation.
2, the main pole according to the described magnetic of claim 1 system is characterized in that its multiple rare-earth permanent magnet is Fe-B rare-earth permanent magnet and cerium cobalt copper rare-earth permanent magnet.
3, the main pole according to the described magnetic of claim 1 system is characterized in that its multiple rare-earth permanent magnet is a Fe-B rare-earth permanent magnet, 2: 17 rare-earth permanent magnets and cerium cobalt copper rare-earth permanent magnet.
4, the main pole according to the described magnetic of claim 1 system is characterized in that its multiple rare-earth permanent magnet is a Fe-B rare-earth permanent magnet, samarium praseodymium cobalt rare-earth permanent magnet and cerium cobalt copper rare-earth permanent magnet.
5, the main pole according to the described magnetic of claim 2,3 and 4 system is characterized in that its multiple rare-earth permanent magnet can partly or entirely cover the main pole surface, and they are shape and big I change separately.
6, the main repeller according to the described magnetic of claim 1 system is characterized in that multiple rare-earth permanent magnet is a samarium praseodymium cobalt rare-earth permanent magnet, Fe-B rare-earth permanent magnet and cerium cobalt copper rare-earth permanent magnet.
7, it is characterized in that according to the described main repeller of claim 1 its multiple rare-earth permanent magnet is 2: 17 rare-earth permanent magnets, Fe-B rare-earth permanent magnet and cerium cobalt copper rare-earth permanent magnet.
8, it is characterized in that according to the described main repeller of claim 1 its multiple rare-earth permanent magnet can be samarium praseodymium cobalt rare-earth permanent magnet, any two kinds of rare-earth permanent magnets among their threes of Fe-B rare-earth permanent magnet and cerium cobalt copper rare-earth permanent magnet.
9, it is characterized in that according to the described main repeller of claim 1 multiple rare-earth permanent magnet can be 2: 17 rare-earth permanent magnets, any two kinds of rare-earth permanent magnets among their threes of Fe-B rare-earth permanent magnet and cerium cobalt copper rare-earth permanent magnet.
10, the shape and the variable size that it is characterized in that its multiple rare-earth permanent magnet according to claim 6,7,8 and 9 described main repellers.
11, it is characterized in that forming in its composite permanent magnet according to the main pole of claim 2,3,4 and 5 described magnetic system and can only be multiple rare-earth permanent magnet.
12, it is characterized in that forming in its composite permanent magnet according to the main repeller of claim 6,7,8,9 and 10 described magnetic system and can only be multiple rare-earth permanent magnet.
13, it is characterized in that according to the main pole of the described magnetic of claim 1 system and main repeller the composite permanent magnet that can be the different rare-earth permanent magnet of a kind of magnetic property forms.(rare-earth permanent magnet: cerium cobalt copper rare-earth permanent magnet, samarium praseodymium cobalt rare-earth permanent magnet, Fe-B rare-earth permanent magnet, 2: 17 rare-earth permanent magnets and the rare-earth permanent magnet formed with iron, silicon and mishmetal etc.）
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86106686 CN86106686A (en) | 1986-09-25 | 1986-09-25 | Magnetic field intensity is a magnetic separator in the permanent-magnet chamber type of 5000-9000 oersteds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86106686 CN86106686A (en) | 1986-09-25 | 1986-09-25 | Magnetic field intensity is a magnetic separator in the permanent-magnet chamber type of 5000-9000 oersteds |
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| Publication Number | Publication Date |
|---|---|
| CN86106686A true CN86106686A (en) | 1987-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86106686 Pending CN86106686A (en) | 1986-09-25 | 1986-09-25 | Magnetic field intensity is a magnetic separator in the permanent-magnet chamber type of 5000-9000 oersteds |
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|---|---|
| CN (1) | CN86106686A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106799304A (en) * | 2016-11-30 | 2017-06-06 | 河池市技术开发中心 | A kind of sorting process of new concentrate magnetic separator |
| CN109331994A (en) * | 2018-10-24 | 2019-02-15 | 北矿机电科技有限责任公司 | A kind of intensity magnetic separator using open magnetic circuit permanent-magnet high gradient magnetic system |
| CN111151376A (en) * | 2020-02-05 | 2020-05-15 | 辽宁科技大学 | Composite magnetic system for flat-ring high-gradient magnetic separator |
-
1986
- 1986-09-25 CN CN 86106686 patent/CN86106686A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106799304A (en) * | 2016-11-30 | 2017-06-06 | 河池市技术开发中心 | A kind of sorting process of new concentrate magnetic separator |
| CN109331994A (en) * | 2018-10-24 | 2019-02-15 | 北矿机电科技有限责任公司 | A kind of intensity magnetic separator using open magnetic circuit permanent-magnet high gradient magnetic system |
| CN109331994B (en) * | 2018-10-24 | 2024-05-10 | 北矿机电科技有限责任公司 | Strong magnetic separator adopting open magnetic circuit permanent magnet high gradient magnetic system |
| CN111151376A (en) * | 2020-02-05 | 2020-05-15 | 辽宁科技大学 | Composite magnetic system for flat-ring high-gradient magnetic separator |
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