CN103357499A - Belt-type multi-stage multi-gradient magnetic separator and method for mineral separation by using belt-type multi-stage multi-gradient magnetic separator - Google Patents
Belt-type multi-stage multi-gradient magnetic separator and method for mineral separation by using belt-type multi-stage multi-gradient magnetic separator Download PDFInfo
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- CN103357499A CN103357499A CN2013102718375A CN201310271837A CN103357499A CN 103357499 A CN103357499 A CN 103357499A CN 2013102718375 A CN2013102718375 A CN 2013102718375A CN 201310271837 A CN201310271837 A CN 201310271837A CN 103357499 A CN103357499 A CN 103357499A
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Abstract
The invention discloses a belt-type multi-stage multi-gradient magnetic separator which comprises a magnetic separating device, a multi-stage material conveying device and a tailing conveying device, wherein the magnetic separating device comprises a belt-type conveyer and a magnetic system arranged inside the belt-type conveyer; the multi-stage material conveying device comprises a plurality of belt-type conveyers which are arranged on one same horizontal height and are arranged at intervals; the tailing conveying device is used for receiving and conveying tailings from the multi-stage material conveying device; the magnetic system comprises a plurality of magnetic field areas of which the magnetic field strength is gradually weakened along the material conveying direction; non-magnetic areas are arranged between every two adjacent magnetic field areas; the magnetic field areas cover the gaps between adjacent belt-type conveyers of the multi-stage material conveying device. The invention further discloses a method for mineral separation by using the belt-type multi-stage multi-gradient magnetic separator.
Description
Technical field
The present invention relates to the multistage many gradients dry-dressing machine of a kind of belt and a kind of method of utilizing the ore dressing of the multistage many gradients dry-dressing machine of belt.
Background technology
Traditionally, generally adopt the wet magnetic separation method that magnetic iron ore is carried out ore dressing.Yet wet magnetic separation needs a large amount of water, and this is very high at drought and water shortage area cost, even so that ore dressing can't carry out.Therefore need a kind of dry-dressing machine of water or needs water seldom that do not need of exploitation to carry out ore dressing.
For problems of the prior art, the present invention proposes the multistage many gradients dry-dressing machine of a kind of belt and a kind of method of utilizing the multistage many gradients dry-dressing machine of belt to carry out ore dressing, can replace the wet magnetic separation method to carry out ore dressing in the drought and water shortage area.
Summary of the invention
According to the present invention, the multistage many gradients dry-dressing machine of a kind of belt comprises: concentration equipment comprises a ribbon conveyer and is arranged on the interior magnetic system of ribbon conveyer; Multistage device for transporting objects, be included in a plurality of ribbon conveyers for delivery of material that arrange with interval mode on the same level height, described multistage device for transporting objects is arranged on the below of described concentration equipment, and the strap surface of the ribbon conveyer of described multistage device for transporting objects is to the belt of the ribbon conveyer of described concentration equipment; The mine tailing conveying device comprises a ribbon conveyer that is arranged on described multistage device for transporting objects below, for the mine tailing that receives and transport from described multistage device for transporting objects; It is characterized in that: described magnetic is to comprise a plurality of field regions that magnetic field intensity weakens gradually along the mass transport direction, between per two adjacent magnetic field districts, have non-magnetic field, and described field regions covers the gap between the adjacent ribbon conveyer of described multistage device for transporting objects.
According to a preferred embodiment, the multistage many gradients dry-dressing machine of above-mentioned belt also comprises distribution device, is used for magnetic mineral fine is evenly distributed in the belt of the ribbon conveyer of described multistage device for transporting objects.
According to a preferred embodiment, in the multistage many gradients dry-dressing machine of above-mentioned belt, described magnetic system comprises four field regions, along the material transportation direction be respectively the high-intensity magnetic field district, than high-intensity magnetic field district, transition field regions and low-intensity magnetic field district.
According to a preferred embodiment, in the multistage many gradients dry-dressing machine of above-mentioned belt, the magnetic field intensity of described field regions is between 1000～6000GS.
According to a preferred embodiment, in the multistage many gradients dry-dressing machine of above-mentioned belt, described magnetic system is composited by Ferrite Material and rare earth magnetic steel, is 100～600mT at the average magnetic induction intensity of the belt surface of the ribbon conveyer of described magnetic separation mechanism.
According to a preferred embodiment, the multistage many gradients dry-dressing machine of above-mentioned belt also comprises frame, and described concentration equipment, described multistage device for transporting objects and described mine tailing conveying device all are arranged on the described frame.
According to a preferred embodiment, in the multistage many gradients dry-dressing machine of above-mentioned belt, described ribbon conveyer includes two rollers and a belt that is wound on two roller cocycle operations, and described two rollers comprise an active roll tube and a driven roller.
Another aspect of the present invention relates to a kind of method of utilizing the multistage many gradients dry-dressing machine of above-mentioned belt to carry out ore dressing, described method comprises the steps: feed step, pretreated iron ore is evenly distributed on the belt of first order ribbon conveyer of multistage device for transporting objects; Separating step, the iron ore that is evenly distributed on the belt of first order ribbon conveyer of multistage device for transporting objects enters the strongest field regions of magnetic field intensity, under magneticaction, magnetisable material is attached to downstream motion on the belt of ribbon conveyer of concentration equipment, and namagnetic substance is thrown tail under the drive of the belt of the first order ribbon conveyer of multistage device for transporting objects; Enriching step, the magnetisable material that is attached on the belt of ribbon conveyer of concentration equipment enters non-magnetic field, drop on the belt of next stage ribbon conveyer of multistage device for transporting objects, and enter the weak field regions in magnetic field, under magneticaction, magnetisable material is attached to downstream motion on the belt of ribbon conveyer of concentration equipment, is thrown tail by the material that concentration equipment adsorbs under the drive of the belt of the ribbon conveyer of multistage device for transporting objects; Mine tailing supplying step, the material of being thrown tail drop on the belt of ribbon conveyer of mine tailing conveying device, are transported to the outside under the drive of the belt of the ribbon conveyer of mine tailing conveying device.
According to a preferred embodiment, in the enriching step of above-mentioned beneficiation method, so that the magnetisable material of initial gross separation carries out enrichment through a plurality of field regions that magnetic field intensity dies down gradually.
According to a preferred embodiment, in above-mentioned beneficiation method, comprise that also the magnetic field intensity of regulating magnetic system is with the step of the output capacity of the grade of control concentrate and mine tailing.
According to a preferred embodiment, in above-mentioned beneficiation method, comprise that also the rotating speed of the roller of regulating ribbon conveyer is with the step of production control ability.
Description of drawings
Fig. 1 is the side schematic view according to the multistage many gradients dry-dressing machine of the belt of one embodiment of the present invention;
Fig. 2 is the top view of the multistage many gradients dry-dressing machine of the belt of Fig. 1;
Fig. 3 shows roller and the belt of concentration equipment of the multistage many gradients dry-dressing machine of belt of Fig. 1;
Fig. 4 shows the magnetic system of the multistage many gradients dry-dressing machine of belt of Fig. 1;
Fig. 5 shows along the cutaway view of the line C-C of Fig. 4;
Fig. 6 shows along the cutaway view of the line A-A of Fig. 1;
Fig. 7 shows the top view of mine tailing conveying device of the multistage many gradients dry-dressing machine of belt of Fig. 1.
The specific embodiment
The specific embodiment of describing the multistage many gradients dry-dressing machine of belt according to the present invention in detail and utilizing the method for the multistage many gradients dry-dressing machine of belt ore dressing below with reference to accompanying drawing.The schematic diagram of the multistage many gradients dry-dressing machine of belt according to the present invention shown in the drawings.Should be pointed out that accompanying drawing and the following described specific embodiment only are examples, and be not construed as limiting the invention.
Fig. 1 is the side schematic view according to the multistage many gradients dry-dressing machine of the belt of one embodiment of the present invention; Fig. 2 is the top view of the multistage many gradients dry-dressing machine of the belt of Fig. 1; Fig. 3 shows roller and the belt of concentration equipment of the multistage many gradients dry-dressing machine of belt of Fig. 1; Fig. 4 shows the magnetic system of the multistage many gradients dry-dressing machine of belt of Fig. 1; Fig. 5 shows along the cutaway view of the line C-C of Fig. 4; Fig. 6 shows along the cutaway view of the line A-A of Fig. 1; Fig. 7 shows the top view of mine tailing conveying device of the multistage many gradients dry-dressing machine of belt of Fig. 1.
As shown in Figure 1, mainly comprise from top to bottom three mechanisms that order arranges according to the multistage many gradients dry-dressing machine of the belt of one embodiment of the present invention: i.e. concentration equipment 100, multistage device for transporting objects 200 and mine tailing conveying device 300.Above three mechanisms can be installed on the common frame 400, also can be installed in respectively on the frame separately.
Magnetic is 120 to be arranged between roller 111 and the roller 112, in the face of below the main belt 113 of operation.Magnetic shown in Figure 1 be 120 comprise magnetic field along the material transportation direction by strong to four weak field regions, namely high-intensity magnetic field district 121, than high-intensity magnetic field district 122, transition field regions 123 and low-intensity magnetic field district 124.For example, the magnetic field intensity in high-intensity magnetic field district 121 can reach 2500GS, can reach 2000GS than the magnetic field intensity in high-intensity magnetic field district 122, and the magnetic field intensity of transition field regions 123 can reach 1500GS, and the magnetic field intensity in low-intensity magnetic field district 124 can reach 1000GS.Between the adjacent magnetic field district, has non-magnetic field.The quantity that should be appreciated that above-mentioned field regions is not limited to four, but can change according to actual needs.And the magnetic field intensity of above-mentioned each field regions also can be regulated according to actual needs, for example can change between 1000～6000GS.
The magnetic architecture of each field regions is identical, mainly is comprised of magnetic pole, corrosion resistant plate, base plate and the magnetic conductance piece installed in magnetic pole surfaces.Magnetic pole is comprised of several ferrite standard magnetic patch or rubidium iron boron standard magnetic patch for generation of magnetic field.The corrosion resistant plate of installing in magnetic pole surfaces prevents that for the protection of magnetic pole dust or other materials from entering magnetic field and consuming magnetic force.Magnetic pole is installed on the mounting base, and base plate can be made by stainless steel, has simultaneously the effect that prevents that magnetic force from leaking outside.The magnetic conductance piece is used for adjusting magnetic gap when magnetic pole is installed.
Multistage device for transporting objects 200 is arranged on concentration equipment 100 belows, be included in a plurality of ribbon conveyers for delivery of material that arrange with interval mode on the same level height, that is: first order ribbon conveyer 210, second level ribbon conveyer 220, third level ribbon conveyer 230, fourth stage ribbon conveyer 240 and level V ribbon conveyer 250.Every one-level ribbon conveyer includes two rollers and one and is wound on two belts on the roller, and one in two rollers is active roll tube, and another is driven roller.Every one-level ribbon conveyer along the strap surface of the material transportation direction operation belt along the operation of material transportation direction to concentration equipment.In Fig. 1, the material transportation direction is the direction left among the figure.As shown in Figure 1, have the gap between the adjacent two-stage ribbon conveyer, each gap covers by one of them field regions of concentration equipment 100.
Upper right side at the first order ribbon conveyer 210 of multistage device for transporting objects 200 is provided with distribution device 260.In one embodiment, distribution device 260 is funnel shaped structures of being made by steel plate.Distribution device 260 is used for iron ore is evenly distributed in the belt of first order ribbon conveyer 210.
Mine tailing conveying device 300 is made of a ribbon conveyer that is arranged on multistage device for transporting objects 200 belows, for the mine tailing that receives and transport from multistage device for transporting objects 200.Mine tailing conveying device 300 comprises two rollers 310,320 and belts 330.One in two rollers 310,320 is active roll tube, and another is driven roller.Active roll tube can be electronic roller, and for example the oil injection type roller also can be replaced electronic roller with common roller and motor acceleration and deceleration machine.
The operating process of adopting the multistage many gradients dry-dressing machine of above-mentioned belt to carry out ore dressing is below described.
Exploitation vignite Shishou out obtains being suitable for the iron ore that the multistage many gradients dry-dressing machine of above-mentioned belt is processed first through preprocessing process such as pulverizing, screenings, and generally below 8mm, water content is below 10% for the particle diameter of this iron ore.
At first send into distribution device 260 through pretreated iron ore, distribution device 260 is evenly distributed in iron ore on the belt of first order ribbon conveyer 210 of multistage device for transporting objects 200.Under the drive of the belt of first order ribbon conveyer 210, iron ore is along mass transport direction (be among Fig. 1 left direction) downstream transport, and enters the high-intensity magnetic field district 121 of concentration equipment 100.Under the effect of magnetic force, magnetisable material is attached on the main belt 113 of concentration equipment 100.And namagnetic substance continues downstream transport under the drive of the belt of first order ribbon conveyer 210, under the end of belt is thrown (throw for the first time tail), falls on the belt 330 of ribbon conveyer of mine tailing conveying device 300.
The magnetic material that is attached on the main belt 113 of concentration equipment 100 continues downstream transport under the drive of main belt 113, enter the belt top of the second level ribbon conveyer 220 of multistage device for transporting objects 200.There is a non-magnetic field position of the concentration equipment 100 that the belt top of second level ribbon conveyer 220 is corresponding, when magnetic material process non-magnetic field, owing to there not being magnetic attraction to drop on the belt of second level ribbon conveyer 220, then the belt at second level ribbon conveyer 220 continues downstream transport.When material through concentration equipment 100 than high-intensity magnetic field district 122 time, under the effect of magnetic force, magnetisable material is attached on the main belt 113 of concentration equipment 100.At this moment owing to the magnetic force than high-intensity magnetic field district 122 is weaker than high-intensity magnetic field district 121, so a part of magnetic is weak or non-magnetic material just can not be attached on the main belt 113 of concentration equipment 100, but under the drive of the belt of second level ribbon conveyer 220, continue downstream motion, under the end of the belt of second level ribbon conveyer 220 is thrown, (throw tail for the second time), fall on the belt 330 of ribbon conveyer of mine tailing conveying device 300.
The magnetic material that is attached on the main belt 113 of concentration equipment 100 continues downstream transport under the drive of main belt 113, enter the belt top of the third level ribbon conveyer 230 of multistage device for transporting objects 200.There is a non-magnetic field position of the concentration equipment 100 that the belt top of third level ribbon conveyer 230 is corresponding, when magnetic material process non-magnetic field, owing to there not being magnetic attraction to drop on the belt of third level ribbon conveyer 230, then the belt at third level ribbon conveyer 230 continues downstream transport.When material passed through the transition field regions 123 of concentration equipment 100, under the effect of magnetic force, magnetisable material was attached on the main belt 113 of concentration equipment 100.At this moment the magnetic force owing to transition field regions 123 is weaker than than high-intensity magnetic field district 122, so a part of magnetic is weak or non-magnetic material just can not be attached on the main belt 113 of concentration equipment 100, but under the drive of the belt of third level ribbon conveyer 230, continue downstream motion, under the end of the belt of third level ribbon conveyer 230 is thrown (throwing for the third time tail), fall on the belt 330 of ribbon conveyer of mine tailing conveying device 300.
The magnetic material that is attached on the main belt 113 of concentration equipment 100 continues downstream transport under the drive of main belt 113, enter the belt top of the fourth stage ribbon conveyer 240 of multistage device for transporting objects 200.There is a non-magnetic field position of the concentration equipment 100 that the belt top of fourth stage ribbon conveyer 240 is corresponding, when magnetic material process non-magnetic field, owing to there not being magnetic attraction to drop on the belt of fourth stage ribbon conveyer 240, then the belt at fourth stage ribbon conveyer 240 continues downstream transport.When material passed through the low-intensity magnetic field district 124 of concentration equipment 100, under the effect of magnetic force, magnetisable material was attached on the main belt 113 of concentration equipment 100.At this moment because the magnetic force in low-intensity magnetic field district 124 is weaker than transition field regions 123, so a part of magnetic is weak or non-magnetic material just can not be attached on the main belt 113 of concentration equipment 100, but under the drive of the belt of fourth stage ribbon conveyer 240, continue downstream motion, under the end of the belt of fourth stage ribbon conveyer 240 is thrown (the 4th time throw tail), fall on the belt 330 of ribbon conveyer of mine tailing conveying device 300.
The magnetic material that is attached on the main belt 113 of concentration equipment 100 continues downstream transport under the drive of main belt 113, enter the belt top of the level V ribbon conveyer 250 of multistage device for transporting objects 200.The position of the concentration equipment 100 that the belt top of level V ribbon conveyer 250 is corresponding no longer includes magnetic field, therefore the magnetic material that is attached on the main belt 113 of concentration equipment 100 all drops on the belt of level V ribbon conveyer 250, then be transported to assigned address and collect, be met thus the iron fine powder of specification requirement.
Throw each time the belt 330 of mine tailing by the ribbon conveyer of mine tailing conveying device 300 that tail falls on the ribbon conveyer of mine tailing conveying device 300 and be transported to assigned address.
Embodiment described above has carried out four enrichments to the iron ore material.Yet, should be appreciated that and can carry out according to the real work needs enrichment of other number of times, for example secondary, three times or greater than four times.
The multistage many gradients dry-dressing machine of belt according to the present invention and utilize the method for the multistage many gradients dry-dressing machine of belt ore dressing can be used for following occasion: be used for the preliminary election operation of poor value, the enrichment ore resource improves the grade of ore; Be used for the deironing of non-magnetic material; Be used for the again choosing of mine tailing, reclaim tailing dam and do the relatively mine tailing of enrichment of slope section; The magnetic separation that is used for sulfate slag dry powder is purified; Be used for magneticore-dressing plant's iron fine powder purification operation, throw lean intergrowth and gangue in the deironing fine powder, improve the grade of iron fine powder; Replace the wet magnetic separation method to carry out ore dressing.
The multistage many gradients dry-dressing machine of belt according to the present invention and utilize the method for the multistage many gradients dry-dressing machine of belt ore dressing to have following advantage: the device processes amount is large, sorting mined material grade wide ranges, and separation accuracy is high, and occluding device not; The grade of selecting product than common magnetic separator improves 10% times; Device structure is simple, and is easy to maintenance; Energy consumption is little, and energy consumption is lower than common magnetic separator; If substitute the wet magnetic separation method, but using water wisely, and reduced secondary pollution; Have good adaptability, regulate the transmission speed of belt by the adjusting roller rotating speed, can the production control capacity of water, can control the grade of concentrate and the output capacity of mine tailing by the magnetic field intensity of regulating magnetic system.
Although reference example expressivity embodiment has been described the present invention, it will be understood to those of skill in the art that the present invention can carry out various forms and variations in detail in the spirit and scope of the invention situation that does not break away from claims restriction.
Claims (11)
1. multistage many gradients dry-dressing machine of belt comprises:
Concentration equipment comprises a ribbon conveyer and is arranged on the interior magnetic system of ribbon conveyer;
Multistage device for transporting objects, be included in a plurality of ribbon conveyers for delivery of material that arrange with interval mode on the same level height, described multistage device for transporting objects is arranged on the below of described concentration equipment, and the strap surface of the ribbon conveyer of described multistage device for transporting objects is to the belt of the ribbon conveyer of described concentration equipment;
The mine tailing conveying device comprises a ribbon conveyer that is arranged on described multistage device for transporting objects below, for the mine tailing that receives and transport from described multistage device for transporting objects;
It is characterized in that: described magnetic is to comprise a plurality of field regions that magnetic field intensity weakens gradually along the mass transport direction, between per two adjacent magnetic field districts, have non-magnetic field, and described field regions covers the gap between the adjacent ribbon conveyer of described multistage device for transporting objects.
2. the multistage many gradients dry-dressing machine of belt as claimed in claim 1 also comprises distribution device, is used for magnetic mineral fine is evenly distributed in the belt of the ribbon conveyer of described multistage device for transporting objects.
3. the multistage many gradients dry-dressing machine of belt as claimed in claim 1, wherein said magnetic system comprises four field regions, along the material transportation direction be respectively the high-intensity magnetic field district, than high-intensity magnetic field district, transition field regions and low-intensity magnetic field district.
4. the multistage many gradients dry-dressing machine of belt as claimed in claim 1, the magnetic field intensity of wherein said field regions is between 1000～6000GS.
5. the multistage many gradients dry-dressing machine of belt as claimed in claim 1, wherein said magnetic system is composited by Ferrite Material and rare earth magnetic steel, is 100～600mT at the average magnetic induction intensity of the belt surface of the ribbon conveyer of described magnetic separation mechanism.
6. the multistage many gradients dry-dressing machine of belt as claimed in claim 1 also comprises frame, and described concentration equipment, described multistage device for transporting objects and described mine tailing conveying device all are arranged on the described frame.
7. the multistage many gradients dry-dressing machine of belt as claimed in claim 1, wherein said ribbon conveyer include two rollers and a belt that is wound on two roller cocycles operations, and described two rollers comprise an active roll tube and a driven roller.
8. the method that the multistage many gradients dry-dressing machine of each described belt carries out ore dressing among a utilization such as the claim 1-7, described method comprises the steps:
Feed step is evenly distributed on pretreated iron ore on the belt of first order ribbon conveyer of multistage device for transporting objects;
Separating step, the iron ore that is evenly distributed on the belt of first order ribbon conveyer of multistage device for transporting objects enters the strongest field regions of magnetic field intensity, under magneticaction, magnetisable material is attached to downstream motion on the belt of ribbon conveyer of concentration equipment, and namagnetic substance is thrown tail under the drive of the belt of the first order ribbon conveyer of multistage device for transporting objects;
Enriching step, the magnetisable material that is attached on the belt of ribbon conveyer of concentration equipment enters non-magnetic field, drop on the belt of next stage ribbon conveyer of multistage device for transporting objects, and enter the weak field regions in magnetic field, under magneticaction, magnetisable material is attached to downstream motion on the belt of ribbon conveyer of concentration equipment, is thrown tail by the material that concentration equipment adsorbs under the drive of the belt of the ribbon conveyer of multistage device for transporting objects;
Mine tailing supplying step, the material of being thrown tail drop on the belt of ribbon conveyer of mine tailing conveying device, are transported to the outside under the drive of the belt of the ribbon conveyer of mine tailing conveying device.
9. method as claimed in claim 8 is wherein in described enriching step, so that the magnetisable material of initial gross separation carries out enrichment through a plurality of field regions that magnetic field intensity dies down gradually.
10. method as claimed in claim 8 comprises that also the magnetic field intensity of regulating magnetic system is with the step of the output capacity of the grade of control concentrate and mine tailing.
11. method as claimed in claim 8 comprises that also the rotating speed of the roller of regulating ribbon conveyer is with the step of production control ability.
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| CN2013102718375A CN103357499A (en) | 2013-07-01 | 2013-07-01 | Belt-type multi-stage multi-gradient magnetic separator and method for mineral separation by using belt-type multi-stage multi-gradient magnetic separator |
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| CN2013102718375A CN103357499A (en) | 2013-07-01 | 2013-07-01 | Belt-type multi-stage multi-gradient magnetic separator and method for mineral separation by using belt-type multi-stage multi-gradient magnetic separator |
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| CN103878060A (en) * | 2014-04-09 | 2014-06-25 | 陕西三沅重工发展股份有限公司 | Closed dry separation equipment for low-grade magnetite |
| CN104028371A (en) * | 2014-04-09 | 2014-09-10 | 陕西三沅重工发展股份有限公司 | Combined dry magnetic separator and magnetic separation method |
| CN105170473A (en) * | 2015-10-10 | 2015-12-23 | 中冶北方（大连）工程技术有限公司 | Rock dry separation system |
| CN105689116A (en) * | 2016-03-23 | 2016-06-22 | 成都利君实业股份有限公司 | Novel magnetic separation mechanism |
| CN105772218A (en) * | 2016-03-22 | 2016-07-20 | 薛鹏飞 | Iron ore circulating classification beneficiation method and dry beneficiation machine applied to method |
| CN109277169A (en) * | 2018-09-03 | 2019-01-29 | 王康 | A kind of preparation process of rare earth ore concentrate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105772218A (en) * | 2016-03-22 | 2016-07-20 | 薛鹏飞 | Iron ore circulating classification beneficiation method and dry beneficiation machine applied to method |
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| CN109277169A (en) * | 2018-09-03 | 2019-01-29 | 王康 | A kind of preparation process of rare earth ore concentrate |
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Application publication date: 20131023 |