CN103331208B - The method of heavy magnetic compound dry separator and the ore dressing of utilization heavy magnetic compound dry separator - Google Patents
The method of heavy magnetic compound dry separator and the ore dressing of utilization heavy magnetic compound dry separator Download PDFInfo
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- CN103331208B CN103331208B CN201310229349.8A CN201310229349A CN103331208B CN 103331208 B CN103331208 B CN 103331208B CN 201310229349 A CN201310229349 A CN 201310229349A CN 103331208 B CN103331208 B CN 103331208B
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Abstract
The invention discloses a kind of heavy magnetic compound dry separator, comprising: top roller and bottom roller; Belt, is arranged between top roller and bottom roller, and is driven by top roller and bottom roller; Magnetic system, is arranged between top roller and bottom roller, and comprises the field regions that multiple magnetic field intensity weakens from bottom to top gradually, forms magnetic field gradient thus in belt surface; Kuppe, forms the space of convey materials between kuppe and belt; Gases at high pressure winding-up atomising device, for being atomized the material entered in kuppe.The invention also discloses a kind of utilization and weigh the method that magnetic compound dry separator carries out ore dressing.
Description
Technical field
The present invention relates to a kind of heavy magnetic compound dry separator and a kind of method utilizing the ore dressing of heavy magnetic compound dry separator.
Background technology
Traditionally, the general wet magnetic separation method that adopts carries out ore dressing to magnetic iron ore.But wet magnetic separation needs a large amount of water, this is very high at drought and water-scarce area cost, even makes ore dressing to carry out.Therefore exploitation is needed a kind ofly not need water or need the dry-dressing machine of little water to carry out ore dressing.
For problems of the prior art, the present invention proposes a kind of heavy magnetic compound dry separator and a kind of utilization weighs the method that magnetic-type compound dry-dressing machine carries out ore dressing, wet magnetic separation method can be replaced to carry out ore dressing at drought and water-scarce area.
Summary of the invention
According to the present invention, a kind of heavy magnetic compound dry separator comprises: top roller and bottom roller, and described top roller and described bottom roller are arranged so that the plane limited between them with respect to the horizontal plane becomes certain inclination angle; Belt, described belt is arranged between described top roller and described bottom roller, and is driven by described top roller and described bottom roller; Magnetic system, described magnetic system is arranged between described top roller and described bottom roller, and under the surface being positioned at described belt; Kuppe, described kuppe covers the belt between described top roller, described bottom roller and described top roller and described bottom roller, and between described kuppe and described belt, form the space of convey materials; Gases at high pressure winding-up atomising device, described gases at high pressure winding-up atomising device is arranged in the space between described kuppe and described belt, for being atomized the material entered in kuppe, it is characterized in that: described magnetic system comprises the field regions that multiple magnetic field intensity weakens from bottom to top gradually, form magnetic field gradient in belt surface thus.
According to a preferred embodiment, above-mentioned magnetic system comprises four field regions, is high-intensity magnetic field district, comparatively high-intensity magnetic field district, transition field regions and low-intensity magnetic field district from bottom to top respectively.
According to a preferred embodiment, above-mentioned magnetic system is composited by Ferrite Material and rare earth magnetic steel, is 50 ~ 700mT at the average magnetic induction intensity of belt surface.
According to a preferred embodiment, the plane inclination angle with respect to the horizontal plane that described top roller and described bottom roller limit can regulate, this inclination angle scope between 25 ~ 70 degree.
According to a preferred embodiment, above-mentioned heavy magnetic compound dry separator also comprises frame, and above-mentioned top roller and bottom roller, kuppe and magnetic system are arranged in frame.
According to a preferred embodiment, the top of described kuppe is connected with deduster.
Another aspect of the present invention relates to and a kind ofly utilizes above-mentioned heavy magnetic compound dry separator to carry out the method for ore dressing, described method comprises the steps: feed step, pretreated iron ore is sent into high-intensity magnetic field district on belt by being arranged on charging aperture on kuppe; Atomization steps, is atomized the iron ore of feeding by gases at high pressure winding-up atomising device; Initial gross separation step, under gravity and magnetic fields, by magnetisable material and namagnetic substance initial gross separation, wherein magnetisable material is attached on belt, and the field regions more weak to magnetic field by belt is carried, and namagnetic substance is under gravity to belt moved beneath; Enriching step, the material entering more weak field regions, magnetic field is separated magnetisable material and namagnetic substance further under magnetic fields, and the magnetisable material of enrichment enters concentrate outlet and collects, and namagnetic substance is under gravity to belt moved beneath.
According to a preferred embodiment, in above-mentioned beneficiation method, also comprise dust removal step, wherein by dust pelletizing system, fine grained namagnetic substance is removed.
According to a preferred embodiment, in the enriching step of above-mentioned beneficiation method, make the magnetisable material of initial gross separation upwards continuously across comparatively high-intensity magnetic field district, transition field regions and low-intensity magnetic field district carry out enrichment.
According to a preferred embodiment, in above-mentioned beneficiation method, also comprise regulate top roller and bottom roller to limit plane inclination angle with respect to the horizontal plane with the step of the grade and quality that control concentrate.
According to a preferred embodiment, in above-mentioned beneficiation method, also comprise and regulate the magnetic field intensity of magnetic system with the step of the output capacity of the grade and mine tailing that control concentrate.
According to a preferred embodiment, in above-mentioned beneficiation method, also comprise the rotating speed of adjusting roller with the step of production control ability.
Accompanying drawing explanation
Fig. 1 is the side schematic view of the heavy magnetic compound dry separator according to one embodiment of the present invention;
Fig. 2 is the top view of the heavy magnetic compound dry separator of Fig. 1;
Fig. 3 shows roller and the belt of the heavy magnetic compound dry separator of Fig. 1;
Fig. 4 shows the magnetic system of the heavy magnetic compound dry separator of Fig. 1.
Detailed description of the invention
Describe in detail according to heavy magnetic compound dry separator of the present invention and the detailed description of the invention utilizing the method weighing the ore dressing of magnetic compound dry separator below with reference to accompanying drawing.Schematic diagram according to heavy magnetic compound dry separator of the present invention shown in the drawings.It should be pointed out that accompanying drawing and following described detailed description of the invention are only examples, and be not construed as limiting the invention.
Fig. 1 is the side schematic view of the heavy magnetic compound dry separator according to one embodiment of the present invention; Fig. 2 is the top view of the heavy magnetic compound dry separator of Fig. 1; Fig. 3 shows roller and the belt of the heavy magnetic compound dry separator of Fig. 1; Fig. 4 shows the magnetic system of the heavy magnetic compound dry separator of Fig. 1.
As shown in Figure 1, a top roller 11 and a bottom roller 12 is comprised according to the heavy magnetic compound dry separator of one embodiment of the present invention, top roller 11 is parallel with the rotating shaft of bottom roller 12, the plane that the rotating shaft of top roller 11 and bottom roller 12 limits with respect to the horizontal plane has an inclination alpha, and this inclination alpha can regulate between 25 ~ 70 degree.Between top roller 11 and bottom roller 12, be provided with the belt 13 of circular flow, belt 13 is wound on top roller 11 and bottom roller 12.Top roller 11 is or/and bottom roller 12 can drive rotation by motor, and top roller 11 is or/and the rotating drive endless belt of bottom roller 12 runs.In the embodiments shown in the drawings, belt 13 rotates clockwise, thus the iron ore material dropped in belt surface can be driven to move upward.Because belt needs carrying iron ore material, should be therefore high strength leather belt according to belt of the present invention.
The below of the belt part moved upward is in FIG provided with magnetic system 30.In the embodiments shown in the drawings, magnetic system 30 comprises four different field regions of magnetic field intensity: i.e. high-intensity magnetic field district 31, comparatively high-intensity magnetic field district 32, transition field regions 33 and low-intensity magnetic field district 34.The magnetic field intensity in high-intensity magnetic field district 31 can reach 3200GS, can reach 2500GS compared with the magnetic field intensity in high-intensity magnetic field district 32, and the magnetic field intensity of transition field regions 33 can reach 2000GS, and the magnetic field intensity in low-intensity magnetic field district 34 can reach 2000GS.Four field regions that magnetic field intensity is different define a magnetic field gradient in belt surface.But, should be appreciated that the quantity of 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 regulate according to actual needs.
As shown in Figure 4, magnetic system 30 can comprise stainless steel surfaces 35, multiple stainless steel roll shaft 36, multiple magnetic pole 37 and stainless steel base 38.Magnetic pole 37 can adopt permanent-magnet material to make.Stainless steel surfaces 35 is for the protection of magnetic pole 37.Stainless steel roll shaft 36, for back-up belt 13, prevents belt 13 from sinking, reduces the contact area on belt 13 and magnetic system surface, thus extend the life-span of belt 13.Stainless steel base 38 is for installing magnetic pole.More than select the parts of stainless steel material can reduce magnetic to reveal, thus reduce magnetic force consumption.
As shown in Figure 1, above belt 13 and top roller 11 and bottom roller 12, kuppe 20 is provided with.Between kuppe 20 and belt 13 and top roller 11, defining the space for carrying iron ore material, and preventing from material from entering in surrounding environment causing air pollution and loss of material.Iron ore material is sent in kuppe 20 by the charging aperture 21 be arranged on kuppe 20.The top 22 of kuppe 20 is connected with deduster (not shown).Multiple gases at high pressure winding-up atomising device 41 has been installed in the space that kuppe 20 and belt 13 limit, gases at high pressure winding-up atomising device 41 operationally sprays the high pressure air of 0.2 ~ 0.6MPa, for by charging aperture 21, the iron ore material sent in kuppe 20 is atomized.
As shown in Figure 2, above-mentioned heavy magnetic compound dry separator also comprises a frame 10.Top roller 11, bottom roller 12, magnetic system 30 and kuppe 20 can be arranged in frame 10.
The operating process adopting above-mentioned heavy magnetic compound dry separator to carry out ore dressing is below described.
Exploitation iron ore is out first through preprocessing process such as pulverizing, screenings, and obtain the iron ore being suitable for the process of above-mentioned heavy magnetic compound dry separator, the particle diameter of this iron ore is generally at below 8mm, and water content is below 10%.Then iron ore material is sent in kuppe 20 by charging aperture 21.
Send into the high pressure air atomization that the iron ore in kuppe 20 is sprayed by gases at high pressure winding-up atomising device 41.First iron ore after atomization enters high-intensity magnetic field district 31, and under gravity and magnetic fields, magnetisable material and namagnetic substance are by initial gross separation.Magnetisable material is attached on belt 13 and is upwards carried, and namagnetic substance is under gravity and high pressure air effect, and a part, to belt moved beneath, leaves belt; A part enters deduster with air-flow, makes particle and air separation by deduster; Some is attached on belt 13, along with magnetisable material is upwards carried by belt together along with magnetisable material.
The namagnetic substance carried secretly of initial gross separation magnetisable material out by Belt Conveying to comparatively high-intensity magnetic field district 32, under magnetic fields, magnetisable material is separated further with namagnetic substance, make the further enrichment of magnetisable material, and the namagnetic substance separated is to belt moved beneath, progressively leave belt.Then the magnetisable material of enrichment enters transition field regions 33 enrichment further, and then enters low-intensity magnetic field district 34 enrichment further.Iron ore grade through low-intensity magnetic field district 34 enrichment has met the requirements of grade (61 ~ 66%) substantially, and the belt surface then above the roller of top falls, and is then collected or exports.
Method according to heavy magnetic compound dry separator of the present invention and the ore dressing of utilization heavy magnetic compound dry separator may be used for following occasion: for the preliminary election operation of poor value, enrichment ore resource, improves the grade of ore; For the deironing of non-magnetic material; Selecting again for mine tailing, reclaims the mine tailing that tailing dam does the relative enrichment of slope section; Magnetic separation for sulfate slag dry powder is purified; For magneticore-dressing plant's Iron concentrate purification operation, throw except the lean intergrowth in Iron concentrate and gangue, improve the grade of Iron concentrate; Wet magnetic separation method is replaced to carry out ore dressing.
According to heavy magnetic compound dry separator of the present invention and utilize the method tool of heavy magnetic compound dry separator ore dressing to have the following advantages: device processes amount is large, and sorting mined material size fraction ranges is wide, and separation accuracy is high, and not occluding device; The grade selecting product than common magnetic separator improves 2 ~ 10 times; Device structure is simple, easy to maintenance; Energy consumption is little, and power consumption is only 20 ~ 50% of ordinary electromagnetic intensity magnetic separator; If substitute wet magnetic separation method, can using water wisely, on average produce 1 ton of Iron concentrate and save 1.5 ~ 2 tons, water, and decrease secondary pollution; There is good adaptability, by the inclination angle regulating top roller and bottom roller to limit, the grade quality of material can be controlled, the transmission speed of belt is regulated by adjusting roller rotating speed, can production control capacity of water, the grade of concentrate and the output capacity of mine tailing can be controlled by regulating the magnetic field intensity of magnetic system.
Although reference example exemplary embodiment describes 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 not departing from claims restriction.
Claims (12)
1. a heavy magnetic compound dry separator, comprising:
Top roller and bottom roller, described top roller and described bottom roller are arranged so that the plane limited between them with respect to the horizontal plane becomes certain inclination angle;
Belt, described belt is arranged between described top roller and described bottom roller, and is driven by described top roller and described bottom roller;
Magnetic system, described magnetic system is arranged between described top roller and described bottom roller, and under the surface being positioned at described belt;
Kuppe, described kuppe covers the belt between described top roller, described bottom roller and described top roller and described bottom roller, and between described kuppe and described belt, form the space of convey materials;
Gases at high pressure winding-up atomising device, described gases at high pressure winding-up atomising device is arranged in the space between described kuppe and described belt, for being atomized the material entered in kuppe,
It is characterized in that: described magnetic system comprises the field regions that multiple magnetic field intensity weakens from bottom to top gradually, form magnetic field gradient in belt surface thus.
2. heavy magnetic compound dry separator as claimed in claim 1, wherein said magnetic system comprises four field regions, is high-intensity magnetic field district, comparatively high-intensity magnetic field district, transition field regions and low-intensity magnetic field district from bottom to top respectively.
3. heavy magnetic compound dry separator as claimed in claim 1, wherein said magnetic system is composited by Ferrite Material and rare earth magnetic steel, is 50 ~ 700mT at the average magnetic induction intensity of belt surface.
4. magnetic compound dry separator as claimed in claim 1 heavy, the plane inclination angle with respect to the horizontal plane that wherein said top roller and described bottom roller limit can regulate, this inclination angle scope between 25 ~ 70 degree.
5. heavy magnetic compound dry separator as claimed in claim 1, also comprise frame, described top roller and described bottom roller, described kuppe and described magnetic system are arranged in described frame.
6. heavy magnetic compound dry separator as claimed in claim 1, the top of wherein said kuppe is connected with deduster.
7. utilize the heavy magnetic compound dry separator according to any one of claim 1-6 to carry out a method for ore dressing, described method comprises the steps:
Feed step, to send into high-intensity magnetic field district on belt by being arranged on charging aperture on kuppe by pretreated iron ore;
Atomization steps, is atomized the iron ore of feeding by gases at high pressure winding-up atomising device;
Initial gross separation step, under gravity and magnetic fields, by magnetisable material and namagnetic substance initial gross separation, wherein magnetisable material is attached on belt, and the field regions more weak to magnetic field by belt is carried, and namagnetic substance is under gravity to belt moved beneath;
Enriching step, the material entering more weak field regions, magnetic field is separated magnetisable material and namagnetic substance further under magnetic fields, and the magnetisable material of enrichment enters concentrate outlet and collects, and namagnetic substance is under gravity to belt moved beneath.
8. method as claimed in claim 7, is also comprised dust removal step, is wherein removed by fine grained namagnetic substance by dust pelletizing system.
9. method as claimed in claim 7, wherein in described enriching step, makes the magnetisable material of initial gross separation upwards continuously across comparatively high-intensity magnetic field district, transition field regions and low-intensity magnetic field district carry out enrichment.
10. method as claimed in claim 7, also comprise regulate top roller and bottom roller to limit plane inclination angle with respect to the horizontal plane with the step of the grade and quality that control concentrate.
11. methods as claimed in claim 7, also comprise and regulate the magnetic field intensity of magnetic system with the step of the output capacity of the grade and mine tailing that control concentrate.
12. methods as claimed in claim 7, also comprise the rotating speed of adjusting roller with the step of production control ability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310229349.8A CN103331208B (en) | 2013-06-08 | 2013-06-08 | The method of heavy magnetic compound dry separator and the ore dressing of utilization heavy magnetic compound dry separator |
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| CN201310229349.8A CN103331208B (en) | 2013-06-08 | 2013-06-08 | The method of heavy magnetic compound dry separator and the ore dressing of utilization heavy magnetic compound dry separator |
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| CN103331208A CN103331208A (en) | 2013-10-02 |
| CN103331208B true CN103331208B (en) | 2015-10-28 |
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