CN104437844B - Method for improving magnetic field intensity of magnetic field separation area and magnetic separation equipment - Google Patents
Method for improving magnetic field intensity of magnetic field separation area and magnetic separation equipment Download PDFInfo
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Abstract
The invention relates to a method and equipment for improving the magnetic field intensity of magnetic separation equipment. A method for improving the magnetic field intensity of a magnetic separation area and magnetic separation equipment are based on the following design methods: the N poles, the N poles and the S poles of the square permanent magnetic blocks are arranged in a clearance mode one by one and are compressed to form a permanent magnetic block group, and therefore the original N pole and S pole planar magnetic field of the square magnetic blocks is extruded and converted into a high-field-intensity strip magnetic field which is alternately arranged along the gaps of the square magnetic blocks and has the N poles and the S poles. The invention can obtain the magnetic field intensity which is several times higher than that of the conventional magnetic field arrangement mode, the magnetic field intensity can be further improved by arranging the magnetism gathering medium in the effective range of the extrusion magnetic system, and the application range and the application field of the invention are greatly improved.
Description
Technical field
The method and apparatus that the present invention relates to a kind of magnetic field intensity improving magnetic plant, is specifically related to a kind of method improving sorting district, magnetic field magnetic field intensity and magnetic plant.
Background technology
In existing magnetic mineral magnetic separation technology field, owing to the magnetic field intensity of single magnetic piece is the most relatively low, the magnetic field that N pole, magnetic piece both sides and S polar plane produce is poor to the capture ability of magnetic mineral, multiple magnetic piece are often alternately superposed with S pole by N pole thus carry out enhancing magnetic field intensity, as shown in Figure 1 by conventional magnetic separation technology.The magnetic field intensity in the magnetic field that N pole, magnetic piece group both sides produces with S polar plane must be improved by effective, but the amplitude that the increase magnetic field intensity being as magnetic piece quantity increases is gradually reduced, measure conventional ferrite magnetic piece (N pole, monolithic magnetic piece both sides is about about 700Gs with the magnetic field intensity in the magnetic field that S polar plane produces) after deliberation when being superimposed to 7 pieces, magnetic field intensity reaches maximum about 1700Gs, again during superposition magnetic piece, magnetic field intensity substantially constant is constant, and accompanying drawing 2 is the conventional ferrite magnetic piece N polar plane central magnetic field intensity of test determination and the relation curve superposing magnetic piece quantity.Single field intensity is that field intensity also can only be brought up to about 7000Gs by superposition by the square magnetic piece of about 4500Gs, it is impossible to meet the requirement of weak magnetic mineral sorting.
See Fig. 3, for existing magnetic plant, use magnetic architecture as described in Figure, the change ceiling restriction of its magnetic field intensity lifting of equipment performance, it is impossible to realize the lifting of the efficiency of separation, significantly constrain improvement and the innovation of magnetic plant.
See Fig. 4, it is for using the existing belt-type permanentmagnet magnetic plant of above-mentioned principle, use annular alloy magnetic piece composition to extrude magnetic system group and constitute magnetic roller, it is parallel to magnetic field gradient on centerline direction excessive along magnetic roller surface, skewness, in figure, black circle ring area is the region that magnetic field is the strongest, and the magnetic field of white portion is more weak.When mineral are by Belt Conveying to magnetic roller surface, the weak magnetic mineral being positioned at white portion effectively can not be captured by magnetic field, thereby results in Magnetic Materials removal efficiency the highest.
Further for the conventional magnetic pulley using above-mentioned principle, magnetic mineral is captured along with, in magnetic pulley rotation process, mineral and magnetic system do not have relative motion, owing to lump ore is difficult to be mingled with by magnetic field, therefore, when processing lump ore, conventional magnetic pulley does not demonstrate technical drawback.Along with broken, the development of ore grinding technology, magnetic iron ore enters the granularity of mill and is gradually lowered, and magnetic iron ore mill feed size is down to several millimeters by high pressure roller mill technology, and conventional magnetic pulley brings magnetic separation Inclusion Problem to use this technology can solve the problem that, it is lifted into mill head grade further, reduces energy consumption of mill.
Summary of the invention
It is an object of the invention to the problem and shortage for above-mentioned existence, it is provided that a kind of new magnetic system arrangement, it is possible to be greatly improved the method improving sorting district, magnetic field magnetic field intensity and the magnetic plant of efficiency of magnetic separation.
For reaching above-mentioned purpose, adopted the technical scheme that:
A kind of method improving sorting district, magnetic field magnetic field intensity, the N pole of several square permanent magnet blocks and N pole, S pole and S pole relative gap one by one arranges and compress formation permanent magnet block group, thus the square magnetic piece N pole of script, S polar plane magnetic-field extrusion are converted into the bar shaped magnetic field that the magnetic piece gap along square magnetic piece group is N pole, high field intensity the most alternately arranged for S.
Some magnetic matrixs are set in the bar shaped magnetic field of high field intensity, continuous print bar shaped magnetic field are converted into the magnetic accumulation point of Disjunct distribution, thus the field intensity in bar shaped magnetic field is strengthened further.
A kind of bar shaped strong-magnetic-field permanent-magnet magnetic system improving sorting district, magnetic field magnetic field intensity utilizing that said method designs, is arranged continuously in the limit of the regular polygon that permanent magnet block group edgewise number is M m group, formed with regular polygon center as summit, m × 360 °/M is the N pole of cornerite, S the most intensive alternately arranged bar shaped strong-magnetic-field permanent-magnet magnetic system, wherein m≤M.
nullA kind of utilize the nonmetallic ore of above-mentioned bar shaped strong-magnetic-field permanent-magnet magnetic system except ferrum permanent-magnet concentration equipment，Including frame、The casing being provided with magnetic mineral gape bottom open top and the cylindrical tube being horizontally installed in casing，It is fixedly installed coaxial with cylindrical tube bar shaped strong-magnetic-field permanent-magnet magnetic system by magnetic system fixed frame on described casing top，The Guide canel α ＜ 90 ° of this bar shaped strong-magnetic-field permanent-magnet magnetic system，This bar shaped strong-magnetic-field permanent-magnet magnetic system be arranged on cylindrical tube side and and cylindrical tube between formation stream turn passage，It is provided with feed port at the top of this bar shaped strong-magnetic-field permanent-magnet magnetic system，Described box bottom is provided with the non magnetic ore gape corresponding with bar shaped strong-magnetic-field permanent-magnet magnetic system bottom，Described cylindrical tube end connects the actuating unit driving cylindrical tube to rotate，It is disposed with needle-like magnetic matrix in described cylindrical tube surface.
The described left and right sides, casing top is equipped with magnetic system fixed frame, and in the magnetic system fixed frame of both sides, it is provided with bar shaped strong-magnetic-field permanent-magnet magnetic system, before and after casing top, end is provided with baffle plate, it is between magnetic system fixed frame and baffle plate and casing and is tightly connected, filling water in casing, magnetic system fixed frame and baffle plate, magnetic system fixed frame or baffle plate edge at described feed port offer overflow launder.
nullA kind of magnetic mineral permanent-magnet concentration equipment utilizing above-mentioned bar shaped strong-magnetic-field permanent-magnet magnetic system，Including frame、The casing being arranged in frame、The cylindrical tube being laterally fixed with in casing、And be arranged in cylindrical tube body and the bar shaped strong-magnetic-field permanent-magnet magnetic system coaxial with cylindrical tube and drive the actuating unit of bar shaped strong-magnetic-field permanent-magnet magnetic system rotation，Described bar shaped strong-magnetic-field permanent-magnet Guide canel is 360 °，Feed port is formed between described cylindrical tube side and casing，The opposite side barrel of cylindrical tube and box bottom are fixed with one and unload ore deposit baffle plate，Unload ore deposit baffle plate casing is separated into concentrate to unload ore storage bin and tailing bin，Ore storage bin is unloaded and tailing bin bottom offers concentrate gape and mine tailing gape respectively at concentrate，The box bottom of described tailing bin is obliquely installed to unloading ore deposit baffle plate by the side near feed port，And and cylindrical tube outer wall between formed sorting district.
nullA kind of magnetic mineral permanent-magnet concentration equipment of the ultra-fine grade of 2DOF utilizing above-mentioned bar shaped strong-magnetic-field permanent-magnet magnetic system，Including frame、The casing being arranged in frame、The cylindrical tube of horizontally set in casing、And be arranged in cylindrical tube body and coaxial with cylindrical tube bar shaped strong-magnetic-field permanent-magnet magnetic system、And drive two actuating units that cylindrical tube and bar shaped strong-magnetic-field permanent-magnet magnetic system rotate respectively，The Guide canel of described bar shaped strong-magnetic-field permanent-magnet magnetic system is 360 °，Feed port is formed between described cylindrical tube side and casing，The opposite side of cylindrical tube and box bottom are provided with one and unload ore deposit baffle plate，The described bottom unloading ore deposit baffle plate is fixing with box bottom to be connected，The top unloading ore deposit baffle plate is slidably matched with the laminating of cylindrical tube surface，Unload ore deposit baffle plate casing is separated into concentrate to unload ore storage bin and tailing bin，Ore storage bin is unloaded and tailing bin bottom offers concentrate gape and mine tailing gape respectively at concentrate，The box bottom of described tailing bin is obliquely installed to unloading ore deposit baffle plate by the side near feed port，And and cylindrical tube outer wall between formed sorting district.
Being to fill water in Hermetical connecting structure, and casing between side and the base plate of described casing, the edge of casing side is provided with overflow launder.
A kind of belt-type permanentmagnet magnetic plant utilizing above-mentioned bar shaped strong-magnetic-field permanent-magnet magnetic system, including frame, the feed bin being arranged in frame, it is arranged on the vibra feeder of feed bin bottom and is arranged on the belt concentration equipment of vibra feeder discharging end, described belt concentration equipment includes active magnetic roller, driven pulley, belt, drive the actuating unit that active magnetic roller rotates, and Magnetic Materials feed bin and the nonmagnetics feed bin of left magnetic roller bottom are set, described magnetic roller is hollow circuit cylinder cylinder, the bar shaped strong-magnetic-field permanent-magnet magnetic system being fixedly installed on the cylinder inboard wall of left magnetic roller that Guide canel is 360 °.
A kind of fine fraction magnetic iron ore utilizing above-mentioned bar shaped strong-magnetic-field permanent-magnet magnetic system roughly selects the 2DOF magnetic pulley throwing tail, including the magnetic pulley body in hollow circuit cylinder cylinder, being arranged on this bar shaped strong-magnetic-field permanent-magnet magnetic system that is internal and that be coaxially disposed of magnetic pulley and two actuating units driving magnetic pulley body and bar shaped strong-magnetic-field permanent-magnet magnetic system to rotate in opposite directions respectively with magnetic pulley, the Guide canel of this bar shaped strong-magnetic-field permanent-magnet magnetic system is 360 °.
Use technique scheme, acquired provide the benefit that:
1. the present invention passes through the design structure that the arrangement of magnetic system is new, it uses adjacent two homopolarity magnetic piece to extrude the mode of magnetic system, so that it can obtain the magnetic field intensity high several times of more conventional magnetic field arrangement mode, arranging magnetic matrix in the effective range of extrusion magnetic system and can further improve magnetic field intensity, its range of application and application are obtained for the biggest raising；
2. the present invention uses new magnetic system arrangement mode, by analysis and the application of the change of magnetic field strength performance to new bar shaped strong-magnetic-field permanent-magnet magnetic system, when being applied in various screening installation, significantly improve magnetic field intensity, increase the capture ability to Magnetic Materials, thus the response rate of the target mineral improved；Use cylinder and bar shaped strong-magnetic-field permanent-magnet magnetic system can carry out move toward one another simultaneously, significantly alleviate nonmagnetics and be mingled with the adverse effect to concentrate quality, be particularly suited for ultra-fine grade mineral except the sorting enrichment of ferrum and iron mineral；
3. the present invention its use new magnetic architecture, and magnetic system produces relative rotation with magnetic pulley body, during barrel body rotation, the mineral being positioned on belt produce relative motion with magnetic system, so that mineral constantly overturn on magnetic pulley surface, the nonmagnetics being mingled with is thrown out of magnetic roller surface in the continuous switching process of magnetic coagulation body, thus reduces nonmagnetics and be mingled with.It is particularly evident that it throws tail effect for the magnetic pulley of fine particle stage material before entering mill, it is possible to is greatly improved into mill grade, reduces ore grinding cost.
Accompanying drawing explanation
Fig. 1 is existing magnetic piece superposition magnetic field magnetic line distribution schematic diagram.
Fig. 2 is the magnetic piece central magnetic field intensity in Fig. 1 and the relation curve superposing magnetic piece quantity.
Fig. 3 is the structural representation of the conventional barrel of magnetic separator of existing superposition magnetic system.
Fig. 4 is the structural representation of existing belt-type permanentmagnet magnetic plant.
Fig. 5 is the structural representation of the permanent magnet block group of the present invention.
Fig. 6 is the effective structure schematic diagram after setting up magnetic matrix.
Fig. 7 is the permanent magnet block of present invention magnetic on the face of cylinder poly-band distributed architecture schematic diagram.
Fig. 8 is the structural representation of the bar shaped strong-magnetic-field permanent-magnet magnetic system of the present invention.
Fig. 9 is that nonmetallic ore removes one of ferrum permanent-magnet concentration device structure schematic diagram.
Figure 10 is that nonmetallic ore removes the two of ferrum permanent-magnet concentration device structure schematic diagram.
Figure 11 is one of structural representation of magnetic mineral permanent-magnet concentration equipment.
Figure 12 is the two of the structural representation of magnetic mineral permanent-magnet concentration equipment.
Figure 13 is one of structural representation of magnetic mineral permanent-magnet concentration equipment of the ultra-fine grade of 2DOF.
Figure 14 is the two of the structural representation of the magnetic mineral permanent-magnet concentration equipment of the ultra-fine grade of 2DOF.
Figure 15 is the structural representation of belt-type permanentmagnet magnetic plant.
Figure 16 is the structural representation that fine fraction magnetic iron ore roughly selects the 2DOF magnetic pulley throwing tail.
Sequence number in figure: 1 is magnetic piece, 2 is frame, 3 is magnetic matrix, 4 is casing, 5 is cylinder, 6 is feed port, 7 is non magnetic ore gape, 8 is magnetic mineral gape, 9 is overflow launder, 10 is permanent magnet block group, 11 for unloading ore deposit baffle plate, 12 unload ore storage bin for concentrate, 13 is tailing bin, 14 is concentrate gape, 15 is mine tailing gape, 16 is sorting district, 17 is feed bin, 18 is vibra feeder, 19 is belt, 20 is active magnetic roller, 21 is driven pulley, 22 is motor, 23 is decelerator, 24 is magnetic pulley body, 25 is magnetic system fixed frame, 26 is material adjustable plate, 27 is Magnetic Materials feed bin, 28 is nonmagnetics feed bin.
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is elaborated.
Embodiment one: see Fig. 5-Fig. 7, a kind of method improving permanent magnetic field sorting district magnetic field intensity, the N pole of several square permanent magnet blocks 1 and N pole, S pole arranges with S pole relative gap one by one and pass through the fixed mounts such as magnetic system fixed frame and compress formation permanent magnet block group 10, thus the square magnetic piece N pole of script, S polar plane magnetic-field extrusion are converted into the bar shaped magnetic field that the magnetic piece gap along square magnetic piece group is N pole, high field intensity the most alternately arranged for S.
Some magnetic matrixs are set in the effective range in the bar shaped magnetic field of high field intensity, continuous print bar shaped magnetic field are converted into the magnetic accumulation point of Disjunct distribution, thus the field intensity in bar shaped magnetic field is strengthened further.
For the above-mentioned method strengthening magnetic field, it is drawn by experiment: magnetic field intensity is directly proportional to the density of the magnetic line of force, and the area of section passed through with the magnetic line of force is inversely proportional to.Assuming the length and width of square magnetic piece, thick respectively L, W, H, adjacent magnetic piece gap n, do not considering leakage field ideally, as long as making n × (2L+2w) ＜ 2L × W, magnetic field intensity is just strengthened.As a example by conventional square magnetic piece 85 × 65 × 18, when magnetic piece spacing is 4mm, ideally, magnetic field intensity is primary plane magnetic field 9.2 times of the extrusion magnetic system calculated.Owing to there is the impact of the factors such as leakage field, the magnetic line of force can not be extruded by magnetic gap gap completely, and the magnetic field intensity therefore extruding magnetic field in actual application can be lower than value of calculation.After measured, conventional ferrite monolithic magnetic piece (N polar plane central magnetic field intensity is 750Gs after measured) N pole is the most relative with N, and when spacing is 4mm, the magnetic field intensity of extrusion magnetic system is 2600 Gs, for 3.5 times of primary plane magnetic field；Conventional two pieces of magnetic piece of ferrite (N polar plane central magnetic field intensity is 1150Gs after measured) N pole is the most relative with N, and when spacing is 4mm, the magnetic field intensity of extrusion magnetic system is 2900 Gs, for 2.5 times of primary plane magnetic field.Experimental data shows, extrusion magnetic system design substantially increases magnetic field intensity, hence it is evident that higher than the magnetic field intensity of the superposition magnetic piece shown in accompanying drawing 1；The magnetic field intensity of extrusion magnetic system and the magnetic field intensity not direct proportionality of flat magnetic field, flat magnetic field field intensity is the highest, and the amplification of extrusion field strength is gradually lowered.
Embodiment two: see Fig. 5-Fig. 8, the present embodiment is to use the magnetic system arrangement method described in embodiment one, further complete the magnetic architecture being applied on magnetic plant, it is a kind of bar shaped strong-magnetic-field permanent-magnet magnetic system improving permanent magnetic field sorting district magnetic field intensity, is arranged continuously in the limit of the regular polygon that permanent magnet block group 10 edgewise number is M m group, formed with regular polygon center as summit, m × 360 °/M is the N pole of cornerite, S the most intensive alternately arranged bar shaped strong-magnetic-field permanent-magnet magnetic system, wherein m≤M, according to different magnetic plants, its Guide canel is chosen according to actual requirement.
nullEmbodiment three: see Fig. 5-Fig. 9，A kind of nonmetallic ore is except ferrum permanent-magnet concentration equipment，It is dry-type magnetic selection apparatus，Including frame 2、The casing 4 being provided with magnetic mineral gape 8 bottom open top and the cylindrical tube 5 being horizontally installed in casing 4，It is fixedly installed coaxial with cylindrical tube 5 bar shaped strong-magnetic-field permanent-magnet magnetic system by magnetic system fixed frame 25 on described casing 4 top，Described bar shaped strong-magnetic-field permanent-magnet magnetic system includes m the permanent magnet block group that the limit continuous distribution of the regular polygon that edgewise number is M is arranged，Wherein m ＜ M，The described N pole that permanent magnet block group is multiple permanent magnet block and N pole、S pole and S pole relative gap one by one arrange and compress the permanent magnet block group of formation，The Guide canel α ＜ 90 ° of this bar shaped strong-magnetic-field permanent-magnet magnetic system，Bar shaped strong-magnetic-field permanent-magnet magnetic system be arranged on cylindrical tube 5 side and and cylindrical tube 5 between formation stream turn passage，It is provided with feed port 6 at the top of this bar shaped strong-magnetic-field permanent-magnet magnetic system，The non magnetic ore gape 7 corresponding with bar shaped strong-magnetic-field permanent-magnet magnetic system bottom it is provided with bottom described casing 4，Described cylindrical tube 5 end connects the actuating unit driving cylindrical tube 5 to rotate.
At the uniform needle-like magnetic matrix 3 that is provided with in described cylindrical tube 5 surface, between magnetic mineral gape 8 and non magnetic ore gape 7, it is provided with material adjustable plate 26.By the needle-like magnetic matrix 3 that is arranged on cylinder, the bar shaped magnetic field of bar shaped strong-magnetic-field permanent-magnet magnetic system is transformed into magnetic field intensity higher N pole and the magnetic accumulation of S pole alternate.
The operation principle of the present invention is: arrange needle-like magnetic matrix in the cylindrical tube surface rotated, rotation along with magnetic matrix cylinder, needle-like magnetic matrix approach extrusion magnetic system bar shaped strong magnetic field action in the range of time, magnetic field near magnetic matrix obtains very big must strengthening, magnetic mineral is under the effect of magnetic force, the magnetic matrix higher to magnetic field moves about, and non magnetic ore is gradually distance from magnetic matrix cylinder surface under magnetic matrix cylinder rotates the centrifugal action produced；In magnetic matrix cylinder rotary course, the magnetic mineral reunited near magnetic matrix in N pole, S pole replaces strong upset under dense arrangement bar shaped strong magnetic field action and reunites, the nonmagnetics being mingled with is dished out, it is pulled out away from the non magnetic ore on magnetic matrix cylinder surface the magnetic mineral being mingled with simultaneously, finally separates from non magnetic ore under the repeatedly effect that many group planes extrude magnetic system magnetic group.Under the comprehensive function in centrifugal force field and magnetic field, non magnetic ore successfully realizes layering, the nonmagnetics ore storage bin outside non magnetic ore entrance with magnetic mineral, and Magnetic Materials falls under gravity into Magnetic Materials ore storage bin when magnetic matrix departs from the action of a magnetic field scope.
The comparison of its effect that can reach with conventional magnetic plant: the design of the magnetic architecture of the application, when it is applied to nonmetallic ore sorting except ferrum, working area field intensity is greatly improved, reaching as high as 2T(is 2-3 times of routine techniques), the capture ability of weak magnetism mineral is remarkably reinforced, therefore higher except the efficiency of ferrum；Assume that magnetic matrix barrel dliameter is R (unit: mm) to radius, a length of L (unit: mm), thickness of feed layer is B (unit: mm), and rotating speed is W (unit: r/min), and the dry mineral density of nonmetallic ore is ρ (unit: g/cm3), then the equipment treating capacity using the application is:
60×ρП[(R+B)2-R2]LW×10-9Ton hour.
Calculate, when thickness of feed layer is 2mm, and the dry mineral density of nonmetallic ore is 2.5 g/cm with conventional drum magnetic separator Φ 1500 × 45003, when drum speed is 20r/min, the equipment treating capacity calculated is: 127.3 ton hour.And nonmetallic ore is except the highest 10 ton hour that are less than for the treatment of capacity of ferrum dry separation intensity magnetic separator at present, mostly about 2-4 ton hour.
Magnetic field intensity is substantially improved by the present invention and the increase of equipment separate unit treating capacity decades of times is the significant technology innovation to current nonmetallic ore dry separation iron removal technology.
The present embodiment is by the design of new magnetic architecture, it is equally applicable to the sorting enrichment of fine fraction chromium depleted zone, working area field intensity is greatly improved, use conventional ferrite magnetic block combination, its magnetic system field intensity is the highest i.e. up to 4000Gs, efficiently solve the contradiction of the action of a magnetic field degree of depth (distance) and magnetic field intensity, i.e. while adding high-intensity magnetic field, the EFFECTIVE RANGE in magnetic field is constant, therefore being greatly reinforced the capture ability of magnetic mineral, the response rate index of iron mineral obtains effective guarantee.
Embodiment four: see Fig. 5-Fig. 8, Figure 10, the structure of the present embodiment is essentially identical with embodiment three, something in common no longer repeats, its difference is: it is applicable to wet magnetic separation equipment, the described left and right sides, casing 4 top is equipped with magnetic system fixed frame 25, and in the magnetic system fixed frame 25 of both sides, it is provided with bar shaped strong-magnetic-field permanent-magnet magnetic system, before and after casing 4 top, end is provided with baffle plate, it is between magnetic system fixed frame 25 and baffle plate and casing 4 and is tightly connected, at casing 4, magnetic system fixed frame 25 and baffle plate fill water, magnetic system fixed frame 25 or baffle plate edge at described feed port 6 offer overflow launder 9.
The problem that the application produces very big adverse effect for sludges a large amount of present in fine fraction magnetic iron ore assorting room to sorting, use rotating media cylinder to produce and strongly overturn perturbation action, desliming efficiency is higher, a sludge part for removing is discharged by equipment lower left quarter non magnetic ore gape, and a part is discharged by the fine fraction sludge spoil disposal overflow launder that its upper side is ad hoc.
nullEmbodiment five: see Fig. 5-Fig. 8、Figure 11，A kind of magnetic mineral permanent-magnet concentration equipment，It is applicable to dry type magnetic separation，Including including frame 2、It is arranged on the uncovered casing of frame upper top 4、The cylindrical tube 5 being laterally fixed with in casing 4、And in being arranged on cylindrical tube 5 and the bar shaped strong-magnetic-field permanent-magnet magnetic system coaxial with cylindrical tube 5 and drive motor and the decelerator of permanent magnetic system rotation，Described bar shaped strong-magnetic-field permanent-magnet magnetic system includes M the permanent magnet block group 10 that the limit continuous distribution of the regular polygon that edgewise number is M is arranged，The described N pole that permanent magnet block group 10 is 6-20 permanent magnet block 1 and N pole、S pole and S pole relative gap one by one arrange and compress the permanent magnet block group of formation，It is provided with magnetic matrix 3 between adjacent two permanent magnet blocks 1，Feed port 6 is formed between described cylindrical tube 5 side and casing 4，It is fixed with one bottom the opposite side barrel of cylindrical tube 5 and casing 4 and unloads ore deposit baffle plate 11，Unload ore deposit baffle plate 11 casing is separated into concentrate to unload ore storage bin 12 and tailing bin 13，Ore storage bin 12 is unloaded and tailing bin 13 bottom offers concentrate gape 14 and mine tailing gape 15 respectively at concentrate，The box bottom of described tailing bin 13 is obliquely installed to unloading ore deposit baffle plate 11 by the side near feed port 6，And and cylindrical tube 5 outer wall between formed sorting district 16.
The present embodiment is dry-type separation equipment, bar shaped strong-magnetic-field permanent-magnet magnetic system is positioned at inside fixed cylinder cylinder, mineral are fed by shown position, gradually the most close to drum surface, when moving in the range of the action of a magnetic field, magnetic mineral, under drum surface bar shaped the action of a magnetic field, forms the class semi-circular cylindrical body along bar shaped Distribution of Magnetic Field, nonmagnetics moves to tailing bin under gravity, discharges from mine tailing gape；Rotation along with bar shaped strong-magnetic-field permanent-magnet magnetic system, it is gathered in the class cylinder of drum surface along the continuous tumbling motion of periphery, the gangue mineral being wherein mingled with is dished out and is discharged by mine tailing gape, magnetic concentrate moves to depart from when concentrate unloads mining area the effect in magnetic field, is discharged by concentrate gape under gravity.
Embodiment six: see Fig. 5-Fig. 8, Figure 12, the structure of the present embodiment is essentially identical with the structure of embodiment five, something in common no longer repeats, its difference is: for Hermetical connecting structure between side and the base plate of described casing 4, and in casing 4, filling water, the edge of casing 4 side is provided with overflow launder 9.
The present embodiment is wet separation equipment, bar shaped strong-magnetic-field permanent-magnet magnetic system is positioned at inside fixed cylinder cylinder, when ore pulp presses shown position to fashionable, under the effect in gravity and flow field gradually close to drum surface, when flowing through in the range of the action of a magnetic field, Magnetic Materials, under drum surface bar shaped the action of a magnetic field, forms the class semi-circular cylindrical body along bar shaped Distribution of Magnetic Field, and nonmagnetics moves to tailing bin under the effect in gravity and flow field, discharge from mine tailing gape；Extrude the rotation of magnetic system therewith, it is gathered in the class cylinder of drum surface along the continuous tumbling motion of periphery, the coarse granule gangue mineral being wherein mingled with is dished out and finally discharges from mine tailing gape, and fine grained gangue mineral is discharged by its upper side overfall under the effect in the stream agitation flow field that Magnetic Materials circumferentially surface rollers produces；Final magnetic concentrate moves to depart from when concentrate unloads ore storage bin the effect in magnetic field, is discharged by concentrate gape under gravity.
nullEmbodiment seven: see Fig. 5-Fig. 8、Figure 13，A kind of magnetic mineral permanent-magnet concentration equipment of the ultra-fine grade of 2DOF，It is dry-type magnetic selection apparatus，Including frame 2、The casing 4 being arranged in frame 2、The cylindrical tube 5 of horizontally set in casing 4、And in being arranged on cylindrical tube 5 and coaxial with cylindrical tube 5 bar shaped strong-magnetic-field permanent-magnet magnetic system、And drive two actuating units that cylindrical tube 5 and bar shaped strong-magnetic-field permanent-magnet magnetic system rotate respectively，Described actuating unit includes motor and decelerator，The Guide canel of described bar shaped strong-magnetic-field permanent-magnet magnetic system is 360 °，Described bar shaped strong-magnetic-field permanent-magnet magnetic system includes M the permanent magnet block group 10 that the limit continuous distribution of the regular polygon that edgewise number is M is arranged，The described N pole that permanent magnet block group 10 is 6-20 permanent magnet block and N pole、S pole and S pole relative gap one by one arrange and compress the permanent magnet block group of formation，It is provided with magnetic matrix between adjacent two permanent magnet blocks，Feed port 6 is formed between described cylindrical tube 5 side and casing 4，It is provided with one bottom the opposite side of cylindrical tube 5 and casing 4 and unloads ore deposit baffle plate 11，The described bottom unloading ore deposit baffle plate 11 is fixing with casing 4 base plate to be connected，The top unloading ore deposit baffle plate 11 is slidably matched with the laminating of cylindrical tube 5 surface，Unload ore deposit baffle plate 11 casing 4 is separated into concentrate to unload ore storage bin 12 and tailing bin 13，Ore storage bin 12 is unloaded and tailing bin 13 bottom offers concentrate gape 14 and mine tailing gape 15 respectively at concentrate，The box bottom of described tailing bin 13 is obliquely installed to unloading ore deposit baffle plate 11 by the side near feed port 6，And and cylindrical tube outer wall between formed sorting district 16.
The present embodiment is a kind of 2DOF dry-type magnetic selection apparatus, bar shaped high-intensity magnetic field magnetic system is positioned at inside cylindrical tube, mineral are fed by shown position, gradually the most close to cylindrical tube surface, when moving in the range of the action of a magnetic field, magnetic mineral, under cylindrical tube surface bar shaped the action of a magnetic field, forms the class semi-circular cylindrical body along bar shaped Distribution of Magnetic Field, nonmagnetics moves to tailing bin under gravity, discharges from mine tailing gape；Under bar shaped strong-magnetic-field permanent-magnet magnetic system and cylinder bidirectional rotation effect, it is gathered in the class cylinder Magnetic Materials of drum surface along periphery tumbling motion consumingly, the gangue mineral being wherein mingled with is dished out and is discharged by mine tailing gape, discharged by concentrate gape under the effect unloading ore deposit baffle plate when magnetic concentrate moves to unload ore storage bin.
Embodiment eight: see Fig. 4-Fig. 6, Figure 14, the structure of the present embodiment is essentially identical with embodiment seven, and something in common no longer repeats, and its difference is: for Hermetical connecting structure between side and the base plate of described casing 4, and in casing, filling water, the edge of casing 4 side is provided with overflow launder 9.
The present embodiment is a kind of 2DOF wet magnetic separation equipment, bar shaped strong-magnetic-field permanent-magnet magnetic system is positioned at inside cylindrical tube, when ore pulp presses shown position to fashionable, under the effect in gravity and flow field gradually close to drum surface, when flowing through in the range of the action of a magnetic field, Magnetic Materials, under drum surface bar shaped the action of a magnetic field, forms the class semi-circular cylindrical body along bar shaped Distribution of Magnetic Field, and nonmagnetics moves to tailing bin under the effect in gravity and flow field, discharge from mine tailing gape；Under the Double-directional rotary effect of bar shaped strong-magnetic-field permanent-magnet magnetic system and cylinder, it is gathered in the class cylinder Magnetic Materials of drum surface along periphery tumbling motion consumingly, being dished out by the fine-grained gangue mineral being wherein mingled with, a part is discharged from mine tailing gape, and a part is discharged by its upper side overfall；Final magnetic concentrate moves to finally be discharged by concentrate gape under the effect unloading ore deposit baffle plate when concentrate unloads ore storage bin.
nullEmbodiment nine: see Fig. 4-Fig. 6、Figure 15，A kind of belt-type permanentmagnet magnetic plant using new magnetic system arrangement form，It includes frame 2、The feed bin 17 being arranged in frame 2、It is arranged on the vibra feeder 18 of feed bin 17 bottom and is arranged on the belt concentration equipment of vibra feeder 18 discharging end，Described belt concentration equipment includes active magnetic roller 20、Driven pulley 21、Belt 19、Drive motor 22 and the decelerator 23 of the rotation of active magnetic roller、And Magnetic Materials feed bin 27 and the nonmagnetics feed bin 28 of left magnetic roller 20 bottom are set，Described magnetic roller 20 is in hollow circuit cylinder cylinder，The bar shaped strong-magnetic-field permanent-magnet magnetic system being provided with on the cylinder inboard wall of left magnetic roller 20 that Guide canel is 360 °，Described bar shaped strong-magnetic-field permanent-magnet magnetic system includes M the permanent magnet block group 10 that the limit continuous distribution of the regular polygon that edgewise number is M is arranged，The N pole of the described permanent magnet block 1 that permanent magnet block group 10 is 6 ~ 20 and N pole、S pole and S pole relative gap one by one arrange and compress the permanent magnet block group of formation，In described permanent magnet block group 10，It is provided with magnetic matrix between adjacent two square permanent magnet blocks.
nullEmbodiment ten，See Fig. 4-Fig. 6，Figure 16，A kind of fine fraction magnetic iron ore roughly selects the 2DOF magnetic pulley throwing tail，Magnetic pulley body 24 including the cylindrical tube structure in hollow、The bar shaped strong-magnetic-field permanent-magnet magnetic system being coaxially disposed in being arranged on magnetic pulley body 24 and with magnetic pulley body 24、And drive magnetic pulley body 24 and two actuating units of bar shaped strong-magnetic-field permanent-magnet magnetic system opposite direction rotating motion respectively，Described two actuating units driving magnetic pulley body 24 and bar shaped strong-magnetic-field permanent-magnet magnetic system all include motor 22 and decelerator 23，Described bar shaped strong-magnetic-field permanent-magnet magnetic system includes M the permanent magnet block group 10 that the limit continuous distribution of the regular polygon that edgewise number is M is arranged，The Guide canel of described bar shaped strong-magnetic-field permanent-magnet magnetic system is 360 °，The described N pole that permanent magnet block group 10 is 6-20 permanent magnet block and N pole、S pole and S pole relative gap one by one arrange and compress the permanent magnet block group of formation，It is provided with magnetic matrix between adjacent two permanent magnet blocks 1.
The present invention its use new magnetic architecture, and magnetic system produces relative rotation with magnetic pulley body, during barrel body rotation, the mineral being positioned on belt produce relative motion with magnetic system, so that mineral constantly overturn on magnetic pulley surface, the nonmagnetics being mingled with is thrown out of magnetic pulley surface in the continuous switching process of magnetic coagulation body, thus reduces nonmagnetics and be mingled with.It is particularly evident that it throws tail effect for the magnetic pulley of fine particle stage material before entering mill, it is possible to is greatly improved into mill grade, reduces ore grinding cost.
Claims (1)
1. a nonmetallic ore is except ferrum permanent-magnet concentration equipment, it is characterized in that: the casing including being provided with bottom frame, open top magnetic mineral gape and the cylindrical tube being horizontally installed in casing, be fixedly installed coaxial with cylindrical tube bar shaped strong-magnetic-field permanent-magnet magnetic system on described casing top by magnetic system fixed frame；
Described bar shaped strong-magnetic-field permanent-magnet magnetic system is: arrange and compress formation permanent magnet block group with N pole, S pole with S pole relative gap one by one by the N pole of several square permanent magnet blocks, the magnetic piece gap being thus converted into the square magnetic piece N pole of script, S polar plane magnetic-field extrusion along square magnetic piece group is N pole, bar shaped magnetic field the most alternately arranged for S；Some magnetic matrixs are set in bar shaped magnetic field, continuous print bar shaped magnetic field are converted into the magnetic accumulation point of Disjunct distribution, thus the field intensity in bar shaped magnetic field is strengthened further；Being arranged continuously on the limit of the regular polygon that permanent magnet block group edgewise number is M m group, formed with regular polygon center as summit, m × 360 °/M is the N pole of cornerite, S the most intensive alternately arranged bar shaped strong-magnetic-field permanent-magnet magnetic system, wherein m ＜ M；
The Guide canel α ＜ 90 ° of this bar shaped strong-magnetic-field permanent-magnet magnetic system, this bar shaped strong-magnetic-field permanent-magnet magnetic system be arranged on cylindrical tube outside and and cylindrical tube between formation stream turn passage, it is provided with feed port at the top of this bar shaped strong-magnetic-field permanent-magnet magnetic system, described box bottom is provided with the non magnetic ore gape corresponding with bar shaped strong-magnetic-field permanent-magnet magnetic system bottom, described cylindrical tube end connects the actuating unit driving cylindrical tube to rotate, and is disposed with needle-like magnetic matrix in described cylindrical tube surface.
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| 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 |
| CN109174444A (en) * | 2018-09-26 | 2019-01-11 | 佛山市万达业机械股份有限公司 | Deironing apparatus |
| CN110369126B (en) * | 2019-08-05 | 2020-06-23 | 潍坊奇为新材料科技有限公司 | High-saturation magnetic flux magnetic-conducting medium |
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| JP2673500B2 (en) * | 1995-08-23 | 1997-11-05 | 株式会社東和製作所 | Bar magnet for iron removal and iron removal device |
| CN100998965A (en) * | 2006-09-14 | 2007-07-18 | 李泽 | Method of setting permanent magnet for magnetic separation machine and permanent magnet construction member for magnetic separation machine |
| CN201017739Y (en) * | 2006-11-22 | 2008-02-06 | 周仲骅 | Magnetic field squeezing type open Magnetic series permanent magnetism device |
| JP4785913B2 (en) * | 2007-12-28 | 2011-10-05 | 住友重機械ファインテック株式会社 | Rotating drum type magnetic separator |
| CN201295639Y (en) * | 2008-11-13 | 2009-08-26 | 岳阳大力神电磁机械有限公司 | Double-extrusion strong force permanent magnetic drum |
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| CN203281413U (en) * | 2013-06-13 | 2013-11-13 | 潍坊隆利重机有限公司 | Wet magnetic separator |
| CN203635321U (en) * | 2013-11-28 | 2014-06-11 | 沈阳隆基电磁科技股份有限公司 | Dry separation strong magnetic roller for iron removal |
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