CN103736587B - Non-homogeneous strong magnetizing mediums, magnetic plant and magnetic selection method - Google Patents
Non-homogeneous strong magnetizing mediums, magnetic plant and magnetic selection method Download PDFInfo
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Abstract
Provide a kind of non-homogeneous strong magnetizing mediums, magnetic plant and magnetic selection method. Described non-homogeneous strong magnetizing mediums includes the strong magnetizing mediums of the uneven multiple footpaths level of arrangement, the ratio of the radius of the strong magnetizing mediums of each footpath level and the radius treating sorting mined material is 2.69, gradient for realizing multiple particle diameter mineral under same exciting curent is mated, to improve the efficiency of separation of high intensity magnetic separation.
Description
Technical field
The present invention relates to a kind of non-homogeneous strong magnetizing mediums, magnetic plant and magnetic selection method, more particularly, it relates to a kind of can realization when mineral aggregate is carried out magnetic separation makes varigrained mineral grain in mineral aggregate carry out gradient coupling and realize the non-homogeneous strong magnetizing mediums of efficient separation of every kind of particle diameter mineral grain, the magnetic plant including this non-homogeneous strong magnetizing mediums and the magnetic selection method using this non-homogeneous strong magnetizing mediums to carry out magnetic separation.
Background technology
Vertical ring high-gradient intensity magnetic separator is a kind of vertical high magnetic separation equipment being generally used for sorting weak magnetic mineral from the Ore of grinding. During work, magnetic field produced by the winding coil of vertical ring high-gradient intensity magnetic separator, constitute loop by upper and lower yoke, change rotates by direction of rotation, and mineral aggregate to be sorted is entered by feed pipe and flows through change along upper magnetic pole gap, wherein, medium is arranged in change, is used for adsorbing magnetic mineral.
After other mineral aggregate to be selected feeds the sorting space of magnetic separator, sorted after being subject to the combined effect of magnetic force and other mechanical forces (such as gravity, centrifugal force, frictional force, resistance of medium etc.). The size of magnetic force suffered by magnetic mineral particles is relevant with the magnetic of mineral own and the medium for adsorbing magnetic mineral. Therefore, other mineral aggregate to be selected is each along different paths, is sorted. In general, magnetic-particle is suffered in magnetic field is directly proportional to magnetic field intensity and gradient than the size of magnetic force.
In producing with current technology, intensity magnetic separator selects, according to the particle mean size of ore particle, the strong magnetizing mediums that a kind of diameter is suitable often, therefore in reality sorts; the mineral grain of a kind of particle diameter can only be looked after when sorting when a kind of exciting curent, say, that vertical ring high-gradient intensity magnetic separator yet suffers from a shortcoming: in high intensity magnetic separation operation; magnetic field gradient can not mate with the gradient of mineral grain; therefore overall beneficiating efficiency is not high, and inferior fine magnetite concentrate grade is relatively low, and concentration ratio is relatively low.
Summary of the invention
It is an object of the invention to solve at least one shortcoming in problem above, for this, provide a kind of beneficiating efficiency that can improve vertical ring pulsating high gradient intensity magnetic separator, mate by realizing the gradient of various granularity mineral, it is achieved the non-homogeneous strong magnetizing mediums of the efficient separation of each particle diameter mineral grain, include the magnetic plant of this medium and use the magnetic selection method of this medium.
The one side of the exemplary embodiment according to the present invention, provide a kind of non-homogeneous strong magnetizing mediums, described non-homogeneous strong magnetizing mediums includes the strong magnetizing mediums of the uneven multiple footpaths level of arrangement, gradient for realizing multiple particle diameter mineral under same exciting curent is mated, and the ratio of the radius of the strong magnetizing mediums of each footpath level and the radius treating sorting mined material is 2.69.
The diameter of the strong magnetizing mediums of the multiple footpaths level in described non-homogeneous strong magnetizing mediums can arrange in gradient on the direction that mineral flow into.
The strong magnetizing mediums of the multiple footpaths level in described non-homogeneous strong magnetizing mediums can arrange from coarse to fine by the diameter of medium on the direction that mineral flow into.
The quantity of the strong magnetizing mediums of each footpath level in the strong magnetizing mediums of the multiple footpaths level in described non-homogeneous strong magnetizing mediums can be different.
Gap between the strong magnetizing mediums of each footpath level in the strong magnetizing mediums of the multiple footpaths level in described non-homogeneous strong magnetizing mediums can be different.
Described non-homogeneous strong magnetizing mediums can include 3-7 footpath level.
Described non-homogeneous strong magnetizing mediums can include 3-5 footpath level.
The another aspect of the exemplary embodiment according to the present invention, it is provided that a kind of magnetic plant, described magnetic plant includes the non-homogeneous strong magnetizing mediums of one recited above.
The another aspect of the exemplary embodiment according to the present invention, it is provided that a kind of magnetic selection method, described magnetic selection method comprises the steps: to select non-homogeneous strong magnetizing mediums as above; Select exciting curent; Under the exciting curent selected, mated with the gradient of multiple particle diameter mineral by the non-homogeneous strong magnetizing mediums selected, described multiple particle diameter mineral are sorted, wherein, the diameter of strong magnetizing mediums of multiple footpaths level in described non-homogeneous strong magnetizing mediums, quantity and gap and described exciting curent are determined according to particle diameter and the content of the different minerals in mineral to be selected.
The diameter of the strong magnetizing mediums of the multiple footpaths level in described non-homogeneous strong magnetizing mediums can be determined according to the particle diameter of the different minerals in mineral to be selected; The quantity of the strong magnetizing mediums of each footpath level in the strong magnetizing mediums of the multiple footpaths level in described non-homogeneous strong magnetizing mediums can be determined according to the surface ratio needed for the corresponding mineral in mineral to be selected; Gap between the strong magnetizing mediums of each footpath level in the strong magnetizing mediums of the multiple footpaths level in described non-homogeneous strong magnetizing mediums can be determined according to the size needed for the corresponding mineral in mineral to be selected.
Adopt the non-uniform dielectric of the present invention, include the magnetic plant of this medium and use the magnetic selection method of this medium, at least one in following significant technique effect can be reached: significantly improve the beneficiating efficiency of intensity magnetic separator sorting weak magnetic minerals, effectively reduce tailings grade, improve concentrate grade, the gradient coupling of every kind of particle diameter mineral is realized, it is achieved the optimization of strong magnetic operation when same exciting curent.
Accompanying drawing explanation
Fig. 1 is the overall alignment figure of strong magnetic change medium.
Fig. 2 is according to the enlarged diagram of arrangement on the uniformly strong magnetizing mediums A-A section in FIG of prior art.
Fig. 3 is the enlarged diagram of arrangement on the A-A section in FIG of non-homogeneous strong magnetizing mediums according to an illustrative embodiment of the invention.
Fig. 4 is with the pulsating high gradient magnetic separator with vertical ring structure chart according to an exemplary embodiment of the present invention shown in front view.
Fig. 5 is with the pulsating high gradient magnetic separator with vertical ring structure chart according to an exemplary embodiment of the present invention shown in side view.
Fig. 6 is the schematic representation of the magnetic selection method that mineral are sorted by non-uniform dielectric according to an exemplary embodiment of the present invention.
Detailed description of the invention
The present invention, embodiments of the invention shown in the drawings have been more fully described it hereinafter with reference to accompanying drawing. But, the present invention can implement in many different forms, and should not be construed as limited to embodiment proposed here. On the contrary, it is provided that these embodiments make the disclosure will be thoroughly with completely, and fully convey the scope of the present invention to those skilled in the art.In the accompanying drawings, for clarity, exaggerating the size of granule and parts and relative size, identical label represents identical element all the time.
Fig. 1 is the overall alignment figure of strong magnetic change medium.
With reference to Fig. 1, hereinafter the non-homogeneous strong magnetizing mediums of the present invention will be described for the change 4 in ring type high magnetic separation machine.
Change 4 includes pushing out ring and two parts of medium, supports ring and forms the outward appearance of change 4, and medium is arranged in a pushing out ring. The bottom of change 4 is arranged in magnetizing coil 2(and sees Fig. 4), and the top of change 4 is positioned at outside magnetizing coil 2, downward arrow is the direction adding ore deposit, and clockwise arrow refers to the direction of rotation of change 4, and the concentrate C chosen by strong magnetizing mediums is rotated with. But, the invention is not restricted to this, the direction of rotation of change 4 can rotate counterclockwise, turn clockwise or according to the needs of actual production counterclockwise, alternately rotate clockwise.
Fig. 2 is according to the enlarged diagram of arrangement on the uniformly strong magnetizing mediums A-A section in FIG of prior art.
With reference to Fig. 2, uniformly strong magnetizing mediums distribution in change according to prior art is substantial uniform, the uniformly gap uniformity between strong magnetic medium rod D, and uniformly the size of strong magnetic medium rod D is substantially the same, that is, it is all uniform on arrangement mode, thickness select and be distributed.
Fig. 3 is the enlarged diagram of arrangement on the A-A section in FIG of non-homogeneous strong magnetizing mediums according to an illustrative embodiment of the invention.
With reference to Fig. 3, non-homogeneous strong magnetizing mediums according to an illustrative embodiment of the invention includes multiple footpaths level (such as D that arrangement is uneven0-D6) strong magnetizing mediums, non-homogeneous strong magnetizing mediums includes the dielectric rod arranged from coarse to fine. Fig. 3 illustrates from D0-D6The strong magnetic medium rod of seven footpath levels, arrange from coarse to finely, to adsorb mineral on the direction that mineral flow into from coarse to fine, but the invention is not restricted to this, its footpath level can be arranged differently according to the direction of ore deposit stream as required, for instance, according to D6-D0Order, D6-D3-D1-D2-D4-D0-D5Order etc., as long as being capable of the sorting to mineral.
In figure 3, D0-D6In the level of footpath, the diameter of the strong magnetizing mediums of each footpath level is different, specifically, the diameter of the strong magnetizing mediums of each footpath level is determined according to the particle diameter of the different minerals in mineral to be selected, when sorting, different minerals in the strong magnetizing mediums absorption material of various footpaths level, reaches the purpose simultaneously carrying out sorting under same exciting curent. It addition, D0-D6The quantity of the strong magnetizing mediums of each footpath level in the strong magnetizing mediums of footpath level is different, correspondingly, and the mineral different to adsorb content fully. Owing to mineral to be selected are attracted to the surface of strong magnetizing mediums, therefore the quantity of the strong magnetizing mediums of each footpath level is determined according to the surface ratio needed for the corresponding mineral in mineral to be selected. It addition, D0-D6Gap L between the strong magnetic medium rod of each footpath level in the strong magnetizing mediums of footpath level is different.
Specifically, D0-D6The strong magnetizing mediums of footpath level and C0-C6The mineral aggregate to be selected of grade is gradient coupling, gradient coupling refers to medium (such as, ferromagnetic media, specifically, thread medium or bar-shaped medium) radius and mineral grain radius should have suitable ratio, acting on the magnetic force on contiguous sub magnetic debris when this ratio maximum, this suitable proportionate relationship is called that gradient is mated. According to mineral magnetic force relational expression Fm=kV �� H �� grad �� B �� on magnetizing mediums it can be seen that wherein, k: volumetric magnetization coefficient;V: particle volume; H: magnetic field intensity; B: magnetic induction, can reach best gradient and mate when the ratio of magnetizing mediums radius with particle radius is 2.69.
Fig. 3 illustrates the non-homogeneous strong magnetizing mediums with 7 footpath levels, but the invention is not restricted to this, for instance, non-homogeneous strong magnetizing mediums can include 3-7 footpath level according to the kind of the different material treated included by ore dressing and quantity. Preferably, non-homogeneous strong magnetizing mediums can include 3-5 footpath level.
Fig. 4 is with the pulsating high gradient magnetic separator with vertical ring structure chart according to an exemplary embodiment of the present invention shown in front view. Fig. 5 is with the pulsating high gradient magnetic separator with vertical ring structure chart according to an exemplary embodiment of the present invention shown in side view. Fig. 6 is the non-uniform dielectric schematic representation to the magnetic selection method of the sorting that mineral carry out according to an exemplary embodiment of the present invention.
With reference to Fig. 4 and Fig. 5, vertical ring pulsating high gradient intensity magnetic separator includes pulsing mechanism 1, magnetizing coil 2, iron yoke 3, change 4, mine feeding bucket 5, rinsing bucket 6, concentrate flusher 7, concentrate bucket 8, middle ore bucket 9, mine tailing bucket 10, liquid level bucket 11, change driving mechanism 12, frame 13, wherein, represent by F to ore deposit, clear water is represented by W, concentrate is represented by C, and chats is represented by M, and mine tailing is represented by T. In order to avoid the theme of the fuzzy present invention, will be described in the feature relevant to non-homogeneous strong magnetizing mediums in vertical ring pulsating high gradient intensity magnetic separator.
In an exemplary embodiment in accordance with the present invention, change 4 includes pushing out ring and a non-homogeneous strong magnetizing mediums as shown in Figure 3. As shown in Figure 4, the bottom of change 4 is overlapping with magnetizing coil 2, produces magnetic field in overlapping part by magnetizing coil, and not overlapping with magnetizing coil 2 top of change 4 does not then have magnetic field.
Mineral aggregate is fed (as shown in F) from mine feeding bucket 5, change 4 is flowed through along upper yoke gap, the non-homogeneous strong magnetizing mediums that thickness media diameters skewness uneven, upper and lower, quantity are uneven and/or spacing is uneven is disposed in change 4, specifically, at the section of change 4, non-homogeneous strong magnetizing mediums is gradually reduced according to along orient diameter (namely from inside to outside) from top to bottom. Non-homogeneous strong magnetizing mediums in change 4 is magnetized in magnetic field; strong magnetic media surface forms high-gradient magnetic field; in ore pulp magnetic-particle by sorption at strong magnetic media surface; along with the rotation of change 4 is taken to top without field regions; pouring in concentrate bucket 8 with clear water W, non-magnetic particle or mine tailing T flow into mine tailing bucket 10 along lower yoke gap.
To the uneven sorting mineral process of granularity as shown in Figure 6, in figure, the granule of the top represents raw mineral materials to be sorted, and including weak magnetic mineral and non magnetic ore, has weak magnetic mineral and the non magnetic ore of coarse grain and particulate in ore deposit. when material is by medium, magnetic force suffered by mineral is to be directly proportional to the product of background lectromagnetism field to magnetic field gradient, identical at the uniform areas background lectromagnetism field of sorting, therefore, when by strong magnetizing mediums top, only coarse grain magnetic mineral is attracted on the thick medium that magnetic field gradient above is less, now owing to the magnetic field gradient that the absorption of particulate magnetic mineral is required is higher, fine mineral will not adsorb on thick medium, when dropping on thin medium, it just can be attracted on thin medium, if only thick medium above, this part particulate magnetic mineral will fall with gravity and current to entering mine tailing and lose.
With reference to Fig. 6, employ the strong magnetizing mediums D of the exemplary embodiment according to the present invention0-D6Varigrained magnetic mineral is sorted, and varigrained magnetic mineral is by the strong magnetizing mediums sorption of Different Diameter level, and last mine tailing T falls into mine tailing bucket 10.In the present example embodiment, mine tailing T includes nonmagnetic mineral and other need not by the mineral of magnetic separation.
D0-D6The strong magnetizing mediums of footpath level arranged, superposed thick medium, for instance D from coarse to fine on the direction that ore deposit is flowed1, adsorb major diameter concentrate, be positioned at the thin medium D of bottom6Absorption minor diameter concentrate. There is the mineral C of different-grain diameter0-C6Sorted successively.
Below, the non-homogeneous strong magnetizing mediums according to the present invention is used to carry out the process of magnetic separation description.
First, select to include the non-homogeneous strong magnetizing mediums of the strong magnetizing mediums of multiple footpaths level, specifically, comprise the steps: that (a) medium arrangement mode selects: in vertical ring pulsating high gradient intensity magnetic separator sorting weak magnetic minerals process, gangue mineral will through the space strong magnetizing mediums, and weak magnetic target minreal is promoted by the absorption of strong magnetizing mediums and unloads, it is achieved mineral sort according to magnetic power. owing to thinner medium has higher gradient, and thinner medium can select thinner mineral also can select thicker mineral, thicker medium can only select thicker mineral grain, and therefore strong magnetizing mediums is just from coarse to fine according to change arrangement mode from inside to outside. b the thickness of () medium can select according to the granularity thickness of selected material, first material to be selected is divided into before selection several different footpath levels, each footpath level adopts different media to test, the mineral of every kind of granularity are filtered out the media diameters that beneficiating efficiency is best, and last composite score selectes the strong magnetizing mediums of every kind of diameter. the selection of (c) medium thickness distribution: the distribution of thickness medium is also uneven, it is the particle size distribution according to material screening, varigrained mineral grain is adopted the strong magnetizing mediums of different diameters, further according to dielectric surface needed for how many calculating of target minreal in Different Diameter level, the ratio of the media quantity of different-diameter is selected finally according to the ratio on the surface needed for every kind of footpath level, finally the arrangement in of medium in approximately the same plane (namely, it is perpendicular to the direction of ore deposit stream) the upper medium as far as possible adopting same diameter, spacing between every kind of medium is arranged also according to the thickness of ore particle, the spacing of thick diameter will be more greatly, spacing between thin diameter medium should consider the absorption of mineral grain, consider that coarse grain stone-like pulse can pass through again.
Secondly, according to it has been determined that each footpath level selected by the diameter of medium test under exciting curent, it is determined that best exciting curent.
Finally, under the exciting curent selected, mated with the gradient of multiple particle diameter mineral by the non-homogeneous strong magnetizing mediums selected, described multiple particle diameter mineral are sorted, wherein, the diameter of the strong magnetizing mediums of the multiple footpaths level in described non-homogeneous strong magnetizing mediums and described exciting curent are determined according to the particle diameter of the different minerals in mineral to be selected.
Now, with for the medium designs of ilmenite ore dressing coupling and the process of ilmenite ore dressing is further appreciated by the non-homogeneous strong magnetizing mediums in the present invention for example and uses the magnetic selection method of this medium.
Example
Exemplary embodiment according to the present invention, it is determined that the step of the diameter of the strong magnetizing mediums of the multiple footpaths level in non-homogeneous strong magnetizing mediums can be known further by detailed description below.
According in illustrative examples of the present invention, it is necessary to the ilmenite ores material granularity carrying out high magnetic separation is typically between 2-0.02mm, material to be sorted in this interval is divided into 5 thickness ranks (grade) or 3-5 grade according to geometric ratio.
Having illustrated the granularmetric composition of material to be selected in table 1, it addition, the grain size content having illustrated material to be selected in table 1 and the media diameters mated, then the calculating of the ratio of required media quantity is as shown in table 2.
Table 1 grain size content and dielectric gradient matching list
| Grade (��m) | 1500 | 540 | 180 | 60 | 20 |
| Weight content (%) | 5 | 25 | 30 | 30 | 10 |
| Used medium diameter (��m) | 4035 | 1452.6 | 484.2 | 161.4 | 53.8 |
It can be seen in table 1, between 2-0.02mm, the granularity (referring to the diameter of mineral aggregate) of ilmenite material is divided into 5 grades in this example, according to present inventive concept, mineral material is carried out 5 grades that the specific implementation process of gradient sorting is not limited in this example, for example, it may be 3 grades.
The grade of 1500 ��m, 540 ��m, 180 ��m, 60 ��m and 20 ��m is respectively adopted the medium of corresponding 5 footpath levels and sorts, media diameters used is distributed as staged, particle size matching is carried out with grade to be sorted, specifically, magnetizing mediums radius/diameter is 2.69 with the ratio treating sorting mined material material particle radius/diameter.
Table 2 having illustrated, the diameter according to the content of material to be selected, grade and corresponding magnetic separation medium determines the quantity of the required medium of each footpath level. In an embodiment of the present invention, medium is the cylinder that diameter is different, and the quantity of required medium is determined with the radical of required medium.
Medium radical ratio computer chart needed for table 2
| Grade (��m) | 1500 | 540 | 180 | 60 | 20 | Amount to |
| Percentage by weight | 5 | 25 | 30 | 30 | 10 | 100 |
| Media diameters | 4035 | 1453 | 484 | 161 | 54 | |
| Medium adhesion amount | 24421837500 | 1139425250 | 42200935 | 1562998 | 57889 | 25605084572 |
| Medium radical ratio | 5 | 562 | 18202 | 491461 | 4423150 |
Different five grades of the percentage by weight listed in table 2 (represent with g, unit ��m) ilmenite ores material granularity, percentage by weight (%) is represented by c, also show the medium of five footpath levels (to be represented by d, unit ��m), medium adhesion amount (X) is the attachment total amount adhering to the mineral material on single medium, and medium radical ratio is the ratio of the radical of the setting of five kinds of media, so that mineral aggregate to be sorted efficiently.
Explain the step of the quantity calculating different medium below with reference to table 2, the adhesion amount X of single medium is by formula X=d2�� g calculates, for instance, when the grade of material to be selected is 1500 ��m, it is 4035 ��m according to the diameter of the required medium determined in table 2, i.e. 1500 �� m 2.69=4035 ��m, the adhesion amount X=4035 of single medium2�� 1500=24421837500, required medium radical ratio is by formula (c �� x) �� calculate, in these cases, medium radical ratio=(5 �� 24421837500) �� 25605084572 �� 5, thus list in the method for separating of the ilmenite material according to an exemplary embodiment of the present invention with five grades the selected step to non-homogeneous strong magnetizing mediums, in the present example embodiment, according to selected D0-D4Non-homogeneous strong magnetizing mediums, has the mineral C of different-grain diameter0-C4Sorted successively.
Exemplary embodiment according to the present invention, it is determined that the step of the gap L between medium, it is possible to determine according to the size needed for the corresponding mineral in mineral to be selected. Such as, according to an exemplary embodiment of the present invention in ilmenite material, maximum particle diameter C0The particle diameter of mineral aggregate be 1500 ��m, accordingly, the strong magnetizing mediums D of maximum diameter level0Gap L between the medium of this one-level0Can not lower than 1500 ��m.
It addition, Wear-resistant Treatment can also be carried out at dielectric surface when adopting non-homogeneous strong magnetizing mediums according to an exemplary embodiment of the present invention, or to the separately assembling of thinner media fraction. Therefore, when medium is thinner Mediawear quickly when, it is possible to be easy to frequent replacing, improve the utilization rate of medium, and the sorting of mineral can be carried out precision and be accurately controlled by the medium separately changing different abrasion condition.Additionally it is also seen that the required thick medium that calculates seldom and thin medium is a lot, being specific to when concrete sample ore carries out medium designs can according to circumstances specific design.
Exemplary embodiment according to the present invention, determine the step of exciting curent, during for certain concrete mineral, first each grade of design is sifted out, experiment is sorted respectively with what the strong magnetomechanical of the medium being provided with its coupling carried out different exciting curent, calculate the comprehensive sorting index under several different exciting curent according to experimental data, then compare it and adopt which exciting curent best. Such as, ilmenite material according to an exemplary embodiment of the present invention, sift out five grades of design, sort experiment with what the strong magnetomechanical of the medium being provided with five the footpath levels mated from these five grades carried out different exciting curent respectively, finally determine the exciting curent adopted.
Exemplary embodiment according to the present invention, adopt the non-uniform dielectric of the present invention, include the magnetic plant of this medium and use the magnetic selection method of this medium, the beneficiating efficiency of intensity magnetic separator sorting weak magnetic minerals can be significantly improved, effectively reduce tailings grade, improve concentrate grade, the gradient coupling of every kind of particle diameter mineral is realized, it is achieved the optimization of strong magnetic operation when same exciting curent.
To sum up, this invention relates to the improvement of the strong magnetizing mediums of intensity magnetic separator, current existing strong magnetizing mediums can not realize the gradient to varigrained mineral grain and mate, still can not reach the high efficiency of high intensity magnetic separation in producing, the medium of intensity magnetic separator is made upper and lower medium difference and distribution during sorting by the present invention also mates the strong magnetizing mediums of requirement distribution by gradient, flow in ore deposit in the process of medium, coarse grain mineral are adsorbed on medium thick above, fine mineral is adsorbed on medium thinner below, thus realizing varigrained mineral grain all realize gradient coupling, the efficiency of separation of high intensity magnetic separation can be improved to the full extent, industrial implementation is easy, effect is notable.
Although it is shown that embodiments of the invention, but without departing from the present invention, it is possible to embodiment is carried out various amendment. The scope of the present invention is limited by claim and equivalent thereof.
Claims (10)
1. the thread or bar-shaped non-homogeneous strong magnetizing mediums for pulsating high gradient magnetic separator with vertical ring, it is characterized in that, described non-homogeneous strong magnetizing mediums includes the strong magnetizing mediums of the uneven multiple footpaths level of arrangement, gradient for realizing multiple particle diameter mineral under same exciting curent is mated, and the ratio of the radius of the strong magnetizing mediums of each footpath level and the radius treating sorting mined material is 2.69.
2. non-homogeneous strong magnetizing mediums as claimed in claim 1, it is characterised in that the diameter of the strong magnetizing mediums of the multiple footpaths level in described non-homogeneous strong magnetizing mediums arranges in gradient on the direction that mineral flow into.
3. non-homogeneous strong magnetizing mediums as claimed in claim 2, it is characterised in that the strong magnetizing mediums of the multiple footpaths level in described non-homogeneous strong magnetizing mediums arranges from coarse to fine by the diameter of medium on the direction that mineral flow into.
4. non-homogeneous strong magnetizing mediums as claimed in claim 1, it is characterised in that the quantity of the strong magnetizing mediums of each footpath level in the strong magnetizing mediums of the multiple footpaths level in described non-homogeneous strong magnetizing mediums is different.
5. non-homogeneous strong magnetizing mediums as claimed in claim 1, it is characterised in that the gap between the strong magnetizing mediums of each footpath level in the strong magnetizing mediums of the multiple footpaths level in described non-homogeneous strong magnetizing mediums is different.
6. non-homogeneous strong magnetizing mediums as claimed in claim 1, it is characterised in that described non-homogeneous strong magnetizing mediums includes 3-7 footpath level.
7. non-homogeneous strong magnetizing mediums as claimed in claim 6, it is characterised in that described non-homogeneous strong magnetizing mediums includes 3-5 footpath level.
8. a pulsating high gradient magnetic separator with vertical ring, it is characterised in that described pulsating high gradient magnetic separator with vertical ring includes the non-homogeneous strong magnetizing mediums as described in any one claim in claim 1 to 7.
9. the magnetic selection method using pulsating high gradient magnetic separator with vertical ring to perform, it is characterised in that described magnetic selection method comprises the steps:
Select the non-homogeneous strong magnetizing mediums as described in any one claim in claim 1 to 7;
Select exciting curent;
Under the exciting curent selected, mated with the gradient of multiple particle diameter mineral by the non-homogeneous strong magnetizing mediums selected, described multiple particle diameter mineral sorted,
Wherein, the diameter of strong magnetizing mediums of multiple footpaths level in described non-homogeneous strong magnetizing mediums, quantity and gap and described exciting curent are determined according to particle diameter and the content of the different minerals in mineral to be selected.
10. magnetic selection method as claimed in claim 9, it is characterised in that:
The diameter of the strong magnetizing mediums of the multiple footpaths level in described non-homogeneous strong magnetizing mediums is determined according to the particle diameter of the different minerals in mineral to be selected;
The quantity of the strong magnetizing mediums of each footpath level in the strong magnetizing mediums of the multiple footpaths level in described non-homogeneous strong magnetizing mediums is determined according to the surface ratio needed for the corresponding mineral in mineral to be selected;
Gap between the strong magnetizing mediums of each footpath level in the strong magnetizing mediums of the multiple footpaths level in described non-homogeneous strong magnetizing mediums is determined according to the size needed for the corresponding mineral in mineral to be selected.
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| CN104525363B (en) * | 2014-12-16 | 2016-10-26 | 攀钢集团矿业有限公司 | A kind of magnetic separator and change thereof and magnetic selection method |
| CN107552226B (en) * | 2017-11-02 | 2019-07-02 | 河南理工大学 | A kind of weak magnetic powder echelon permanent-magnet high gradient concentration equipment of continous way |
| CN107824333B (en) * | 2017-12-07 | 2020-05-05 | 武汉理工大学 | Cross arrangement rod medium high gradient magnetic separator control parameter self-adaptive matching method |
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| CN203663999U (en) * | 2013-12-17 | 2014-06-25 | 攀钢集团矿业有限公司 | Non-uniform strong magnetic medium and magnetic separation equipment |
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| CN101402069A (en) * | 2008-10-23 | 2009-04-08 | 河南理工大学 | Split type multi-roller multi-component high-gradient vibration magnetic separator in permanent magnetism |
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