CN103331208A - Gravity-magnetic composite dry separator and method utilizing same for mineral separation - Google Patents
Gravity-magnetic composite dry separator and method utilizing same for mineral separation Download PDFInfo
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- CN103331208A CN103331208A CN2013102293498A CN201310229349A CN103331208A CN 103331208 A CN103331208 A CN 103331208A CN 2013102293498 A CN2013102293498 A CN 2013102293498A CN 201310229349 A CN201310229349 A CN 201310229349A CN 103331208 A CN103331208 A CN 103331208A
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Abstract
The invention discloses a gravity-magnetic composite dry separator, which comprises an upper roller, a lower roller, a belt, a magnetic system, a guiding cover and a high-pressure gas injection atomization device, wherein the belt is arranged between the upper roller and the lower roller and is driven by the upper roller and the lower roller; the magnetic system is arranged between the upper roller and the lower roller and comprises a plurality of magnetic field areas of which the magnetic field intensity is gradually decreased from bottom to top, and thus the surface of the belt forms a magnetic field gradient; a material conveying space is formed between the guiding cover and the belt; the high-pressure gas injection atomization device is used for atomizing materials entering the guiding cover. The invention also discloses a method utilizing the gravity-magnetic composite dry separator for mineral separation.
Description
Technical field
The present invention relates to a kind of heavy magnetic compound dry separator and a kind of method of utilizing the ore dressing of heavy magnetic compound dry separator.
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 makes ore dressing to 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.
At problems of the prior art, the present invention proposes a kind of heavy magnetic compound dry separator and a kind of method of utilizing the compound dry-dressing machine of heavy magnetic-type 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, 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 that limits between them with respect to the horizontal plane becomes certain inclination angle; Belt, described belt are arranged between described top roller and the described bottom roller, and are driven by described top roller and described bottom roller; Magnetic system, described magnetic is to be arranged between described top roller and the described bottom roller, and is positioned under the surface of described belt; Kuppe, described kuppe cover the belt between described top roller, described bottom roller and described top roller and the described bottom roller, and form the space of convey materials between described kuppe and described belt; 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 the described belt, be used for the material that enters in the kuppe is atomized, it is characterized in that: described magnetic is to comprise the field regions that a plurality of magnetic field intensities weaken from bottom to top gradually, forms magnetic field gradient in belt surface thus.
According to a preferred embodiment, above-mentioned magnetic system comprises four field regions, is respectively the high-intensity magnetic field district from bottom to top, than high-intensity magnetic field district, transition field regions and low-intensity magnetic field district.
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 inclination angle with respect to the horizontal plane, plane that described top roller and described bottom roller limit can be regulated, 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 on the frame.
According to a preferred embodiment, the top of described kuppe is connected with deduster.
Another aspect of the present invention relates to a kind of method of utilizing above-mentioned heavy magnetic compound dry separator to carry out ore dressing, described method comprises the steps: feed step, by the charging aperture that is arranged on the kuppe pretreated iron ore is sent into high-intensity magnetic field district on the belt; Atomization steps atomizes the iron ore of sending into by gases at high pressure winding-up atomising device; The initial gross separation step, under gravity and magnetic field effect, with magnetisable material and namagnetic substance initial gross separation, wherein magnetisable material is attached on the belt, is carried by the field regions that belt is more weak to magnetic field, and namagnetic substance is moving below belt under the gravity effect; Enriching step, the material that enters the more weak field regions in magnetic field further separates magnetisable material and namagnetic substance under the effect of magnetic field, and the magnetisable material of enrichment enters the concentrate outlet and collects, and namagnetic substance is moving below belt under the gravity effect.
According to a preferred embodiment, in above-mentioned beneficiation method, also comprise dust removal step, wherein by dust pelletizing system the fine grained namagnetic substance is removed.
According to a preferred embodiment, in the enriching step of above-mentioned beneficiation method, make that the magnetisable material of initial gross separation is upwards continuous in carrying out enrichment than high-intensity magnetic field district, transition field regions and low-intensity magnetic field district.
According to a preferred embodiment, in above-mentioned beneficiation method, comprise that also the inclination angle with respect to the horizontal plane, plane of regulating top roller and the restriction of bottom roller is with the grade of control concentrate and the step of quality.
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 regulating roller is to control the step of production capacity.
Description of drawings
Fig. 1 is the side schematic view according to the heavy magnetic compound dry separator of one embodiment of the present invention;
Fig. 2 is the vertical 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.
The specific embodiment
Describe in detail according to heavy magnetic compound dry separator of the present invention and the specific embodiment of utilizing the method that weighs 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.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 heavy magnetic compound dry separator of one embodiment of the present invention; Fig. 2 is the vertical 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, heavy magnetic compound dry separator according to one embodiment of the present invention comprises a top roller 11 and a bottom roller 12, the rotating shaft of top roller 11 and bottom roller 12 is parallel, 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 be regulated between 25～70 degree.Be provided with the belt 13 of circular flow between top roller 11 and bottom roller 12, belt 13 is wound on top roller 11 and the bottom roller 12.Top roller 11 is or/and bottom roller 12 can be rotated by motor-driven, and top roller 11 is or/and the rotating drive belt circular flow of bottom roller 12.In embodiment shown in the drawings, belt 13 clockwise rotates, and moves upward thereby can drive the iron ore material that drops on the belt surface.Because belt need carry the iron ore material, should be the high strength belt according to belt of the present invention therefore.
Being provided with magnetic below the belt part that moves upward shown in Fig. 1 is 30.In embodiment shown in the drawings, magnetic is 30 to comprise four field regions that magnetic field intensity is different: namely high-intensity magnetic field district 31, than 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 than 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 have formed a magnetic field gradient in belt surface.Yet, 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 be regulated according to actual needs.
As shown in Figure 4, magnetic is 30 can comprise stainless steel surfaces 35, a plurality of stainless steel roll shaft 36, a plurality of 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 is used for back-up belt 13, prevents that belt 13 from sinking, and reducing belt 13 is surface contact area with magnetic, thereby prolongs the life-span of belt 13.Stainless steel base 38 is used for installing magnetic pole.More than select for use the parts of stainless steel material can reduce the magnetic leakage, thereby reduce magnetic force consumption.
As shown in Figure 1, above belt 13 and top roller 11 and bottom roller 12, be provided with kuppe 20.Between kuppe 20 and belt 13 and top roller 11, formed the space for delivery of the iron ore material, and prevented that material from entering and cause air pollution and loss of material in the surrounding environment.The iron ore material is sent in the kuppe 20 by the charging aperture 21 that is arranged on the kuppe 20.The top 22 of kuppe 20 is connected with the deduster (not shown).A plurality of gases at high pressure winding-up atomising devices 41 have been installed in the space of kuppe 20 and belt 13 restrictions, the high pressure air of gases at high pressure winding-up atomising device 41 ejection 0.2～0.6MPa when work is used for the iron ore material of sending into by charging aperture 21 in the 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 be 30 and kuppe 20 can be installed on the frame 10.
The operating process of adopting above-mentioned heavy magnetic compound dry separator to carry out ore dressing is below described.
The iron ore that exploitation is come out obtains being suitable for the iron ore that above-mentioned heavy magnetic compound dry separator is handled at 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.Then the iron ore material is sent in the kuppe 20 by charging aperture 21.
Send into the high pressure air atomizing that the iron ore in the kuppe 20 sprays by gases at high pressure winding-up atomising device 41.Iron ore after the atomizing at first enters high-intensity magnetic field district 31, and under gravity and magnetic field effect, magnetisable material and namagnetic substance are by initial gross separation.Magnetisable material is attached on the belt 13 and is upwards carried, and namagnetic substance is a part of to the motion of belt below under gravity and high pressure air effect, leaves belt; A part enters deduster with air-flow, makes particle and air separation by deduster; Some is along with magnetisable material is attached on the belt 13, along with magnetisable material is upwards carried by belt together.
The namagnetic substance that the magnetisable material that initial gross separation is come out is carried secretly is transported to than high-intensity magnetic field district 32 by belt, under the effect of magnetic field, make magnetisable material further separate with namagnetic substance, make the further enrichment of magnetisable material, and the namagnetic substance of separating progressively leaves belt to the motion of belt below.The magnetisable material of enrichment enters the 33 further enrichments of transition field regions then, and then enters the 34 further enrichments of low-intensity magnetic field district.Iron ore grade through low-intensity magnetic field district's 34 enrichments has met the requirements of grade (61～66%) basically, and the belt surface from top roller top falls then, is collected then or exports.
Method according to heavy magnetic compound dry separator of the present invention and the ore dressing of the heavy magnetic compound dry separator of utilization 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 choosing again of mine tailing, reclaim tailing dam and do the slope section mine tailing of enrichment relatively; The magnetic separation that is used for sulfate slag dry powder is purified; Be used for the smart powder purification of magneticore-dressing plant's iron operation, throw lean intergrowth and gangue in the smart powder of deironing, improve the grade of the smart powder of iron; Replace the wet magnetic separation method to carry out ore dressing.
According to heavy magnetic compound dry separator of the present invention and utilize the method for heavy magnetic compound dry separator ore dressing to have following advantage: the device processes amount is big, sorting mined material grade wide ranges, separation accuracy height, and occluding device not; The grade of selecting product than common magnetic separator improves 2～10 times; Device structure is simple, and is easy to maintenance; Energy consumption is little, and power consumption only is 20～50% of common electrical magnetic strength magnetic separator; If substitute the wet magnetic separation method, but using water wisely is on average produced 1.5～2 tons of the smart powder conserve water of 1 ton of iron, and has been reduced secondary pollution; Has good adaptability, by regulating the inclination angle that top roller and bottom roller limit, can control the grade quality of material, by regulating the transmission speed that the roller rotating speed is regulated belt, the production capacity size can be controlled, the grade of concentrate and the output capacity of mine tailing can be controlled by the magnetic field intensity of regulating magnetic system.
Though 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 under the spirit and scope of the invention situation that does not break away from claims restriction.
Claims (12)
1. one kind weighs the magnetic compound dry separator, comprising:
Top roller and bottom roller, described top roller and described bottom roller are arranged so that the plane that limits between them with respect to the horizontal plane becomes certain inclination angle;
Belt, described belt are arranged between described top roller and the described bottom roller, and are driven by described top roller and described bottom roller;
Magnetic system, described magnetic is to be arranged between described top roller and the described bottom roller, and is positioned under the surface of described belt;
Kuppe, described kuppe cover the belt between described top roller, described bottom roller and described top roller and the described bottom roller, and form the space of convey materials between described kuppe and described belt;
Gases at high pressure winding-ups atomising device, described gases at high pressure winding-up atomising device are arranged in the space between described kuppe and the described belt, be used for the material that enters in the kuppe is atomized,
It is characterized in that: described magnetic is to comprise the field regions that a plurality of magnetic field intensities weaken from bottom to top gradually, forms 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 respectively the high-intensity magnetic field district from bottom to top, than high-intensity magnetic field district, transition field regions and low-intensity magnetic field district.
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. heavy magnetic compound dry separator as claimed in claim 1, the inclination angle with respect to the horizontal plane, plane that wherein said top roller and described bottom roller limit can be regulated, this inclination angle scope between 25～70 degree.
5. heavy magnetic compound dry separator as claimed in claim 1 also comprises frame, and described top roller and described bottom roller, described kuppe and described magnetic system are arranged on the described frame.
6. heavy magnetic compound dry separator as claimed in claim 1, the top of wherein said kuppe is connected with deduster.
7. the method that each described heavy magnetic compound dry separator carries out ore dressing among a utilization such as the claim 1-6, described method comprises the steps:
Feed step is sent pretreated iron ore into high-intensity magnetic field district on the belt by the charging aperture that is arranged on the kuppe;
Atomization steps atomizes the iron ore of sending into by gases at high pressure winding-up atomising device;
The initial gross separation step, under gravity and magnetic field effect, with magnetisable material and namagnetic substance initial gross separation, wherein magnetisable material is attached on the belt, is carried by the field regions that belt is more weak to magnetic field, and namagnetic substance is moving below belt under the gravity effect;
Enriching step, the material that enters the more weak field regions in magnetic field further separates magnetisable material and namagnetic substance under the effect of magnetic field, and the magnetisable material of enrichment enters the concentrate outlet and collects, and namagnetic substance is moving below belt under the gravity effect.
8. method as claimed in claim 7 also comprises dust removal step, wherein by dust pelletizing system the fine grained namagnetic substance is removed.
9. method as claimed in claim 7 wherein in described enriching step, makes that the magnetisable material of initial gross separation is upwards continuous in carrying out enrichment than high-intensity magnetic field district, transition field regions and low-intensity magnetic field district.
10. method as claimed in claim 7 comprises that also the inclination angle with respect to the horizontal plane, plane of regulating top roller and the restriction of bottom roller is with the grade of control concentrate and the step of quality.
11. method as claimed in claim 7 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.
12. method as claimed in claim 7 comprises that also the rotating speed of regulating roller is to control the step of production capacity.
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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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| 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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| CN103331208B CN103331208B (en) | 2015-10-28 |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104028373A (en) * | 2014-05-31 | 2014-09-10 | 毕辅成 | Magnetic separation device for iron ore powder |
| 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 |
| CN104028374A (en) * | 2014-05-31 | 2014-09-10 | 毕辅成 | Magnetic separation device for iron ore powder |
| CN104549713A (en) * | 2015-01-13 | 2015-04-29 | 辽宁科技大学 | Simple and efficient magnetic separation method for low-grade iron minerals |
| CN105689116A (en) * | 2016-03-23 | 2016-06-22 | 成都利君实业股份有限公司 | Novel magnetic separation mechanism |
| CN106216094A (en) * | 2016-07-21 | 2016-12-14 | 本钢板材股份有限公司 | A kind of steel scoria magnetic separation machine and steel scoria magnetic separation method |
| CN107583767A (en) * | 2017-09-15 | 2018-01-16 | 河南易成新能源股份有限公司 | Wind magnetic combined-type magnetic seperator |
| CN107716100A (en) * | 2017-09-15 | 2018-02-23 | 河南易成新能源股份有限公司 | Self-cleaning type magnetic separator |
| CN107716104A (en) * | 2017-09-15 | 2018-02-23 | 河南易成新能源股份有限公司 | Slip fraction magnetic separator |
| CN107790281A (en) * | 2017-09-15 | 2018-03-13 | 河南易成新能源股份有限公司 | Magnetic separator with hole sizer |
| CN108057518A (en) * | 2017-11-28 | 2018-05-22 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of magnetic material horizontal wind magnetic-synchro connection screening device and method |
| CN109465109A (en) * | 2018-11-09 | 2019-03-15 | 长沙万荣粉体设备科技有限公司 | A kind of plate magnetic separator |
| CN109530225A (en) * | 2019-01-11 | 2019-03-29 | 唐山市神州机械有限公司 | A kind of dry-dressing machine with bed surface block clearing equipment |
| CN113102102A (en) * | 2021-04-08 | 2021-07-13 | 沈阳盛世五寰科技有限公司 | Belt dry separator |
| CN114405671A (en) * | 2022-03-30 | 2022-04-29 | 山东华特磁电科技股份有限公司 | Strong magnetic plate type magnetic separator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN104028371B (en) * | 2014-04-09 | 2016-04-20 | 陕西三沅重工发展股份有限公司 | Associating dry-type magnetic extractor and magnetic selection method |
| CN104028374A (en) * | 2014-05-31 | 2014-09-10 | 毕辅成 | Magnetic separation device for iron ore powder |
| CN104028373A (en) * | 2014-05-31 | 2014-09-10 | 毕辅成 | Magnetic separation device for iron ore powder |
| CN104549713A (en) * | 2015-01-13 | 2015-04-29 | 辽宁科技大学 | Simple and efficient magnetic separation method for low-grade iron minerals |
| CN104549713B (en) * | 2015-01-13 | 2017-04-19 | 辽宁科技大学 | Simple and efficient magnetic separation method for low-grade iron minerals |
| CN105689116B (en) * | 2016-03-23 | 2018-05-25 | 成都利君实业股份有限公司 | A kind of novel magnetic separation mechanism |
| CN105689116A (en) * | 2016-03-23 | 2016-06-22 | 成都利君实业股份有限公司 | Novel magnetic separation mechanism |
| CN106216094A (en) * | 2016-07-21 | 2016-12-14 | 本钢板材股份有限公司 | A kind of steel scoria magnetic separation machine and steel scoria magnetic separation method |
| CN107583767A (en) * | 2017-09-15 | 2018-01-16 | 河南易成新能源股份有限公司 | Wind magnetic combined-type magnetic seperator |
| CN107716104A (en) * | 2017-09-15 | 2018-02-23 | 河南易成新能源股份有限公司 | Slip fraction magnetic separator |
| CN107790281A (en) * | 2017-09-15 | 2018-03-13 | 河南易成新能源股份有限公司 | Magnetic separator with hole sizer |
| CN107716100A (en) * | 2017-09-15 | 2018-02-23 | 河南易成新能源股份有限公司 | Self-cleaning type magnetic separator |
| CN108057518A (en) * | 2017-11-28 | 2018-05-22 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of magnetic material horizontal wind magnetic-synchro connection screening device and method |
| CN108057518B (en) * | 2017-11-28 | 2024-02-02 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Horizontal wind-magnetic synchronous joint selection device and method for magnetic materials |
| CN109465109A (en) * | 2018-11-09 | 2019-03-15 | 长沙万荣粉体设备科技有限公司 | A kind of plate magnetic separator |
| CN109530225A (en) * | 2019-01-11 | 2019-03-29 | 唐山市神州机械有限公司 | A kind of dry-dressing machine with bed surface block clearing equipment |
| CN113102102A (en) * | 2021-04-08 | 2021-07-13 | 沈阳盛世五寰科技有限公司 | Belt dry separator |
| CN114405671A (en) * | 2022-03-30 | 2022-04-29 | 山东华特磁电科技股份有限公司 | Strong magnetic plate type magnetic separator |
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