CN102886302A - Variable magnetic field classification magnetic separator - Google Patents
Variable magnetic field classification magnetic separator Download PDFInfo
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- CN102886302A CN102886302A CN2012103556566A CN201210355656A CN102886302A CN 102886302 A CN102886302 A CN 102886302A CN 2012103556566 A CN2012103556566 A CN 2012103556566A CN 201210355656 A CN201210355656 A CN 201210355656A CN 102886302 A CN102886302 A CN 102886302A
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Abstract
Then invention discloses a variable magnetic field classification magnetic separator, is applicable to the mineral separation and purification of wet type mineral powder materials, and provides a variable magnetic field classification magnetic separator by which grades of active ingredients in magnetic materials are improved and other non-magnetic ingredients in the magnetic materials are effectively separated. The magnetic separator comprises a shell with a feed inlet and at least two discharge outlets, wherein a magnetic yoke shaft with magnetic blocks, and a magnetic roller with a rotary sleeve are arranged in the shell; the feed inlet is formed in the front end of the shell; the magnetic blocks arranged on the magnetic yoke shaft are distributed on the periphery of the magnetic yoke shaft; the magnetic field intensity of the outer surface of the rotary sleeve is reduced along the axis direction from the front end to the rear end; the outer surface of the rotary sleeve is provided with an axial propelling device from the front end to the rear end; and the discharge outlets are formed in the lower part of the shell and at least two discharge holes are formed along the axis direction. By the magnetic separator, substances with different magnetic induction coefficients in a selected mineral can be separated, and a magnetic separation effect and economic benefits are improved.
Description
Technical field
The present invention relates to the magnetic separator for ore dressing, especially be applicable to the magnetic separator of the ore dressing purification use of wet type powder mineral material.
Background technology
Magnetic separator is applicable to the wet magnetic separation of the materials such as the following magnetic iron ore of granularity 3mm, magnetic iron ore, roasted ore, ilmenite, also is used for the deironing operation of the materials such as coal, nonmetallic ore, building materials.The magnetic of magnetic separator system adopts the high-quality Ferrite Material or is composited with rare earth magnetic steel, and a cylinder table average magnetic induction intensity is 60～600mT.According to user's needs, can provide the multiple different tables such as following current, half adverse current, adverse current type strong magnetic separation.That this equipment has is simple in structure, treating capacity is large, easy to operate, be easy to the advantages such as maintenance.
Present magnetic separator generally adopts wet magnetic separation, as depicted in figs. 1 and 2, the ore deposit liquid that will contain breeze to be selected is injected into the hopper 4 from charging aperture 6, turnbarrel 2 is around 1 rotation of fixing yoke axle, because the bottom of yoke axle 1 is equipped with several groups of magnetic patch 3, by the magnetic field that turnbarrel 2 surfaces form the magnetic components in the liquid of ore deposit is adsorbed, in turnbarrel 2 rotations, after the magnetic components that is adsorbed leaves magnetic patch 3, turnbarrel 2 Surface fields weaken or when disappearing, magnetic components breaks away from turnbarrel 2 discharging opening 5 from the side discharges, and arrives the purpose of magnetic separation.But this magnetic separator is because its reasons in structure causes following shortcoming.
1, because the magnetic patch of installing at the yoke axle only is arranged on a section of bottom, therefore in the magnetic separation process, turnbarrel rotates a circle, effective absorption working time of magnetic material is short, upset number of times on the left magnetic roller is few, disk pack is wrapped up in phenomenon and non-disk pack, and to wrap up in phenomenon serious, is difficult to reach the Expected Results of magnetic separation.
2, owing to the magnetic field intensity that is installed in the magnetic patch on the yoke axle is identical, therefore for containing different magnetic materials, so the mineral of comparison of ingredients complexity are because selected material magnetic induction coefficient difference magnetic separation effect is relatively poor.
Because above-mentioned shortcoming, the Panzhihua Region in China is in the magnetic separation process of its vanadium titano-magnetite, because the TiO that contains
2Grade higher, adopt existing magnetic separator, the iron grade in the final finished can only reach about 54%, content of titanium dioxide is higher than more than 12%.And in smelting process, if the low coke ratio that will cause of iron grade rises, the capacity factor of a blast furnace descends, and works as TiO
2When grade surpassed 8 ~ 9%, blast furnace can't adopt common normal smelting, must allocate common iron ore concentrate into and fall titanium and just can smelt, so all improve Fe content seeking a kind of suitable technology and equipment at present in the magnetic separation process, reduced Ti content.
Summary of the invention
Technical problem to be solved by this invention provides and a kind ofly can improve active ingredient grade in the magnetisable material and in the magnetisable material other carried out the varying magnetic field stage magnetic separator of effective separation without magnetic component.
The present invention solves the varying magnetic field stage magnetic separator that its technical problem adopts, and comprises the shell with charging aperture and discharging opening, is equipped with in shell with the yoke axle of magnetic patch and the magnetic roller of turnbarrel, and described charging aperture is arranged on the front end of shell; The magnetic patch of installing at the yoke axle is distributed on the periphery of yoke axle, and the magnetic field intensity of turnbarrel outer surface reduces from the front end to the rear end along axis direction, is provided with from front end axial advance device to the back-end at the turnbarrel outer surface; Described discharging opening is arranged on the bottom of shell, and is arranged with at least 2 along axis direction.
Further improve, the magnetic field intensity of the magnetic patch of installing on the described yoke axle reduces from the front end to the rear end gradually along axis direction.
The magnetic field intensity of the magnetic patch of installing on the described yoke axle is identical, and the diameter of described turnbarrel strengthens from the front end to the rear end gradually along axis direction.
The quantity of described discharging opening is 4 ~ 8, and the magnetic field intensity of the yoke axle that each discharging opening is corresponding is unequal.
Be equipped with radially to power apparatus in turnbarrel outer surface outside.
Described is hydraulic nozzle to power apparatus radially.
Use magnetic separator of the present invention, owing to having adopted the technology of magnetic roller change of magnetic field strength, for different magnetic materials, separate from turnbarrel in different magnetic field intensity positions, thereby the material that can will be selected in different magnetic induction coefficients in the mineral separates, improve the effect of magnetic separation and the grade of final products, and can reclaim other magnetisable material in the selected mineral and utilize by magnetic separation, increased resource utilization and economic benefit.
Use magnetic separator of the present invention can replace at present traditional magnetic separator of the overwhelming majority, its separating effect is more remarkable.By experiment as can be known, after magnetic separation, the sefstromite concentrate grade can improve 5～10% than traditional magnetic separation, and the iron grade is reached more than 60%, and the titanium grade in the sefstromite concentrate can reduce about 4 ~ 7%, and the titanium dioxide in the sefstromite concentrate is down to below 8 ~ 9%.The every raising 1% of iron grade, coke ratio reduces by 1～1.5%, and the capacity factor of a blast furnace will rise 1.5%, owing to the titanium dioxide quantity in the sefstromite concentrate reduces, thereby can realize the effective separation of slag iron in smelting process, reduce cost.
Description of drawings
Fig. 1 is existing magnetic separator structural representation;
Fig. 2 is that schematic diagram is arranged in the cross section of existing varying magnetic field stage magnetic separator;
Fig. 3 is the first example structure schematic diagram of the present invention;
Fig. 4 is the structural representation of the second embodiment of the present invention;
Fig. 5 is the installation schematic cross-section of yoke axle and turnbarrel in above-described embodiment.
Reference numeral: 1-yoke axle, 2-turnbarrel, 3-magnetic patch, 4-hopper, 5-discharging opening, 6-charging aperture, 7-helicla flute, 11-are radially given power apparatus, 14-shell.
The specific embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
Varying magnetic field stage magnetic separator of the present invention comprises the shell with charging aperture and discharging opening, is equipped with in the enclosure with the yoke axle of magnetic patch and the magnetic roller of turnbarrel, and charging aperture 6 is arranged on the front end of shell 14.The magnetic patch 3 of installing at yoke axle 1 is distributed on the periphery of yoke axle 1, and the magnetic field intensity of turnbarrel 2 outer surfaces reduces from the front end to the rear end along axis direction, is provided with from front end axial advance device to the back-end at turnbarrel 2 outer surfaces.Discharging opening 5 is arranged on the side lower part of shell 14, and is arranged with at least 2 along axis direction.Be distributed on the periphery of yoke axle at the magnetic patch 3 of yoke axle 1 installation, wait the ore deposit liquid that contains optional material after charging aperture 6 chargings, be subjected to influence of magnetic field on the yoke axle 1, the material that contains magnetic material is attracted to the turnbarrel outer surface, and along with the axial advance device on the turnbarrel 2 rotation advances, different magnetic materials break away from the turnbarrel outer surface and fall into different discharging opening 5 in turnbarrel outer surface different magnetic field intensity section.And do not contain magnetic material or the very little material of magnetic material content is left in the liquid of ore deposit, discharge with ore deposit liquid at last, thereby realize effective magnetic separation.Front end magnetic field intensity at turnbarrel 2 outer surfaces is 300 ~ 800mT, and is different according to the magnetic material in the liquid of ore deposit, even can also be higher, and the rear end magnetic field intensity is 50 ~ 60mT.Be 600 ~ 700mT for general vanadium titano-magnetite in the front end magnetic field intensity of turnbarrel outer surface.Mineral are in the front position of turnbarrel 2, the not magnetic material component of tool such as dust, sulfide, phosphorus etc. can not be adsorbed, just can realize separating, and for the general material of magnetic induction intensity, such as ilmenite, ilmenite concentrate breaks away from the surface of turnbarrel 2 to be realized separating in the position of magnetic field intensity 450 ~ 500mT, and for the high material of magnetic induction intensity, could separate with the surface of turnbarrel 2 in the rear end of turnbarrel 2 such as iron, the a plurality of discharging openings 5 that arrange by the position at magnetic separator bottom each magnetic induction intensity of correspondence like this, just different materials can be collected respectively, be arrived the purpose of sorting.Discharging opening 5 is arranged on the bottom of shell 14, and is arranged with at least 2 along axis direction, and according to different material components, the quantity of discharging opening 5 is set to 4 ~ 8 best results.The magnetic field intensity of the yoke axle 1 of each discharging opening 5 correspondence is unequal, the material of different magnetic is relative discharging opening below corresponding position disengaging turnbarrel 2 falls into, just can realize categorised collection to different material by each discharging opening, the effect that more existing magnetic separator can only be done a kind of sorting has had great improvement, and the sorting that is particularly suitable for the vanadium titano-magnetite of Panzhihua Region is used.
As shown in Figure 3, several magnetic patch 3 in 1 installation of yoke axle, magnetic patch 3 can be that permanent magnet also can be electromagnet, and guarantee to reduce gradually along the magnetic field intensity of each magnetic patch 3 of axis direction from the front end to the rear end, yoke axle 1 surface is identical to the distance between the surface of turnbarrel 2 at axis, so guarantee that in the magnetic field intensity of the surface of turnbarrel 2 formation also respective change magnetic field intensity reduces from the front end to the rear end gradually along axis direction.Can also be such as accompanying drawing 4, the magnetic field intensity of the magnetic patch 3 of installing on the yoke axle 1 is identical, can select permanent magnet as magnetic patch, also can adopt electromagnet, guarantees that simultaneously the magnetic field intensity of yoke axle 1 periphery is constant.The diameter of turnbarrel 2 is strengthened from the front end to the rear end gradually along axis direction, like this owing to yoke axle 1 surface increases gradually to the distance between the surface of turnbarrel 2, so the magnetic field intensity that forms on the surface of turnbarrel 2 is respective change and guarantee that magnetic field intensity reduces from the front end to the rear end gradually along axis direction also, and permanent magnet is simpler than the installation of electromagnet in the embodiment of accompanying drawing 4, particularly being applicable to the installation of permanent magnet, therefore is best embodiment.
Be provided with the axis propulsion plant on the surface of turnbarrel 2, also be provided with simultaneously radially to power apparatus 11.Because what the present invention adopted is that ore deposit liquid carries out magnetic separation, therefore have radially and be hydraulic nozzle to power apparatus 11, hydraulic pressure by nozzle ejection carries out pressure washing to the magnetic material that is adsorbed on the turnbarrel outer surface, and the nonmagnetic substance that disk pack wherein can be wrapped up in is removed, and improves the magnetic separation effect.
Adopt magnetic roll structure of the present invention, show by vanadium titanium ilmenite concentrate and common iron ore concentrate magnetic separation experiment to Panzhihua Region, sefstromite concentrate finished product grade can be increased to about 60%, common iron ore concentrate finished product grade is brought up to about 70%, content of titanium dioxide in the sefstromite concentrate is down to below the 8-9%, can also reclaim simultaneously the titanium dioxide in the sefstromite concentrate, experimental results show that sefstromite concentrate per ton can reclaim the titanium dioxide about 100 kilograms.The magnetic separation that magnetic roller of the present invention also is applicable to contain the magnetisable material that produces in the metal recovery, chemical process of the magnetisable material of Multiple components separates, and produces the sulfate slag that produces in the sulfuric acid process such as troilite.
Claims (6)
1. the varying magnetic field stage magnetic separator comprises the shell with charging aperture and discharging opening, is equipped with in shell with the yoke axle of magnetic patch and the magnetic roller of turnbarrel, it is characterized in that, described charging aperture (6) is arranged on the front end of shell (14); Be distributed on the periphery of yoke axle (1) at the magnetic patch (3) of yoke axle (1) installation, and the magnetic field intensity of turnbarrel (2) outer surface reduces from the front end to the rear end along axis direction, is provided with from front end axial advance device to the back-end at turnbarrel (2) outer surface; Described discharging opening (5) and be arranged with at least 2 along axis direction.
2. varying magnetic field stage magnetic separator as claimed in claim 1 is characterized in that, the magnetic field intensity of the upper magnetic patch (3) of installing of described yoke axle (1) reduces from the front end to the rear end gradually along axis direction.
3. varying magnetic field stage magnetic separator as claimed in claim 1 is characterized in that, the magnetic field intensity of the upper magnetic patch (3) of installing of described yoke axle (1) is identical, and the diameter of described turnbarrel (2) strengthens from the front end to the rear end gradually along axis direction.
4. varying magnetic field stage magnetic separator as claimed in claim 1 is characterized in that, the quantity of described discharging opening (5) is 4 ~ 8, and the magnetic field intensity of the yoke axle (1) that each discharging opening (5) is corresponding is unequal.
5. such as claim 1 or 4 described varying magnetic field stage magnetic separators, it is characterized in that, be equipped with radially to power apparatus (11) in turnbarrel (2) outer surface outside.
6. varying magnetic field stage magnetic separator as claimed in claim 5 is characterized in that, described is hydraulic nozzle to power apparatus (11) radially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210355656.6A CN102886302B (en) | 2012-09-21 | 2012-09-21 | Variable magnetic field classification magnetic separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210355656.6A CN102886302B (en) | 2012-09-21 | 2012-09-21 | Variable magnetic field classification magnetic separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102886302A true CN102886302A (en) | 2013-01-23 |
| CN102886302B CN102886302B (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210355656.6A Expired - Fee Related CN102886302B (en) | 2012-09-21 | 2012-09-21 | Variable magnetic field classification magnetic separator |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3830367A (en) * | 1972-06-26 | 1974-08-20 | W Stone | High intensity wet magnetic separators |
| CN101402069A (en) * | 2008-10-23 | 2009-04-08 | 河南理工大学 | Split type multi-roller multi-component high-gradient vibration magnetic separator in permanent magnetism |
| CN101648160A (en) * | 2008-08-13 | 2010-02-17 | 抚顺思瑞机电设备有限公司 | Dry flyash recoverer |
-
2012
- 2012-09-21 CN CN201210355656.6A patent/CN102886302B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3830367A (en) * | 1972-06-26 | 1974-08-20 | W Stone | High intensity wet magnetic separators |
| CN101648160A (en) * | 2008-08-13 | 2010-02-17 | 抚顺思瑞机电设备有限公司 | Dry flyash recoverer |
| CN101402069A (en) * | 2008-10-23 | 2009-04-08 | 河南理工大学 | Split type multi-roller multi-component high-gradient vibration magnetic separator in permanent magnetism |
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| Publication number | Publication date |
|---|---|
| CN102886302B (en) | 2016-01-27 |
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