CN105413858A - Magnetic separation device for forming high-density magnetic peak value through small pole pitch - Google Patents
Magnetic separation device for forming high-density magnetic peak value through small pole pitch Download PDFInfo
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- CN105413858A CN105413858A CN201610013869.9A CN201610013869A CN105413858A CN 105413858 A CN105413858 A CN 105413858A CN 201610013869 A CN201610013869 A CN 201610013869A CN 105413858 A CN105413858 A CN 105413858A
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- magnetic
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- magnetic source
- pole pitch
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
Abstract
The invention discloses a magnetic separation device for forming a high-density magnetic peak value through an opening magnetic system, small magnetic sources and a small pole pitch. The device comprises the multiple magnetic sources of the same size, the magnetic sources are arranged in parallel, and the adjacent magnetic sources are arranged with a short distance, so that dense uneven magnetic peaks are formed on the surfaces of the combined magnetic sources. The magnetic peak value at the edges of the every two adjacent magnetic sources is larger than that of the center of the magnetic sources. The device is used for magnetic separation of fine-grain mineral. Due to the fact that the magnetic sources are arranged with the short distance and the small pole pitch is small, the dense uneven magnetic peak value changes are formed in a small area; due to the fact that the magnetic peak value of the working face formed through the magnetic system is clear, the attractive force of the magnetic system surface is formed in a point or line mode, fine-grain mineral can be easily sorted, and the mineral separation accuracy rate is improved.
Description
Technical field
The invention belongs to concentration equipment field, especially design a kind of concentration equipment utilizing small pole pitch to form high density magnetic hill value.
Background technology
It is a large distinguishing feature of mineral resources in the world today that poor, assorted, thin selected mineral increase year by year.According to statistics, in the world phosphate mineral 1/3,1/6 of copper-bearing mineral, containing 1/5 of tungsten mineral, at 1/10 of the iron ore of U.S.'s exploitation, 1/2 of Bolivia's tin ore, and the mineral of other millions of ton meter are all be lost with the form of microfine, this loss is basically difficult to effective sorting and recovery owing to fine mineral, along with day by day attenuating of mining ore disseminated grain size, the sorting of fine mineral has become an important component part of current sorting mineral, more and more receives the concern of people; How effectively graded shot mineral are a great problems of ore dressing circle.
Summary of the invention
For addressing the aforementioned drawbacks, the present invention proposes a kind of concentration equipment utilizing small pole pitch to form high density magnetic hill value, and it utilizes uneven high density magnetic hill to realize graded shot level mineral.
Technical scheme of the present invention is achieved in that
Utilize small pole pitch to form a concentration equipment for high density magnetic hill value, it comprises the identical magnetic source of multiple size, and multiple magnetic source is arranged in parallel, and closely arranges between adjacent two magnetic sources; Magnetic source surface all forms intensive uneven magnetic hill, and the magnetic hill value at adjacent two magnetic source edges is greater than the magnetic hill peak value of magnetic source center.
Wherein, magnetic source is electromagnet source or permanent magnet sources.
Wherein, the distance width between two adjacent magnetic sources is 0.02 ~ 2 millimeter.
Wherein, the width of each magnetic source is 4 ~ 15 millimeters.
Wherein, concentration equipment of the present invention is used for graded shot level mineral, and its shape is cuboid, square, trapezoidal, grooved or polygon.
Wherein, multiple magnetic source is arranged in multiple lines and multiple rows, and the polarity of each magnetic source is contrary with the polarity of adjacent four magnetic sources.
Preferably, multiple magnetic source is arranged in multiple lines and multiple rows, the polarity of each magnetic source be expert to/arrange to contrary with the polarity of adjacent four magnetic sources, the polarity of each magnetic source at row to/row to contrary with the polarity of adjacent four magnetic sources.
Compared with prior art, the present invention has following beneficial effect: the present invention adopts opening magnetic system, small magnetic source, small pole pitch profit is utilized to form the concentration equipment of high density magnetic hill value, it is for graded shot level, micro-size fraction mineral, the contact position of its magnetic separation effect mainly between adjacent two magnetic sources; Small-sized because of magnetic source, and closely arrange between adjacent two magnetic sources, the magnetic hill value that the surface of adjacent two magnetic source contacts is formed is very large, and the magnetic hill value of magnetic source center is very little, therefore in small size, forming intensive uniform magnetic peak change, the position absorption affinity that magnetic hill value is large is very strong, and it is poor that magnetic hill is worth little position absorption affinity, within the scope of small size, magnetic hill value height is clearly demarcated, and therefore the absorption affinity on this magnetic system surface is formed with line or point.Be easy to sort fine fraction, micro-size fraction mineral, and the rate of precision of ore dressing is high.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the arrangement schematic diagram of magnetic source of the present invention.
Fig. 2 is the magnetic hill distribution schematic diagram of Fig. 1.
Fig. 3 is the another kind arrangement schematic diagram of magnetic source of the present invention.
Fig. 4 is the magnetic hill distribution schematic diagram of Fig. 3.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
" fine fraction " of indication of the present invention refers to the mineral of granularity below 120 orders; The definition of pole pitch is the distance between adjacent two magnetic sources, and namely the central point of a magnetic source is to the distance of adjacent magnetic source central point.
Referring to figs. 1 through Fig. 4, the present invention discloses a kind of concentration equipment utilizing small pole pitch to form high density magnetic hill value, and it is for graded shot level, micro-size fraction mineral, and its shape is cuboid, square, trapezoidal, grooved or polygon.It comprises the identical magnetic source of multiple size, and multiple magnetic source is arranged in parallel, and closely arranges between adjacent two magnetic sources, and the distance width between two adjacent magnetic sources is 0.02 ~ 2 millimeter; Magnetic source surface all forms intensive uneven magnetic hill, and the magnetic hill value at adjacent two magnetic source edges is greater than the magnetic hill peak value of magnetic source center.Magnetic source of the present invention is electromagnet source or permanent magnet sources, and the width of each magnetic source of the present invention is 4 ~ 15 millimeters.
The multiple magnetic source of the present invention is arranged in multiple lines and multiple rows, and its arrangement mode has two kinds: (1) as shown in Figure 1, the polarity of each magnetic source is contrary with the polarity of adjacent four magnetic sources; (2) as shown in Figure 3, the polarity of each magnetic source be expert to/arrange to contrary with the polarity of adjacent four magnetic sources, the polarity of each magnetic source at row to/row to contrary with the polarity of adjacent four magnetic sources.
The mode that the present invention realizes pole pitch small has: (1) magnetic source and magnetic source closely arrange, when magnetic source size is certain, gap between adjacent two magnetic sources is small, therefore reduces pole pitch, forms intensive uneven magnetic peak change in small size; (2) volume of magnetic source is reduced, the magnetic source quantity arranged in same volume is more, and magnetic source quantity is more, and number of magnetic poles is more, the pole pitch of adjacent two magnetic sources arranged in same volume is less, therefore within the scope of small size, form the uneven magnetic peak change of more crypto set.
It is small that the present invention realizes pole pitch by above-mentioned two kinds of modes, thus realize in small size, form intensive uneven magnetic peak change, and its principle analysis is as follows:
(1) magnetic source arrangement of the present invention forms opening magnetic system, and opening magnetic system main structure parameters comprises pole pitch, the extremely wide ratio wide with pole gap, magnetic system height, width, radius and number of poles.
Wherein, the number of poles of magnetic system
in formula: L is magnetic system length; L is pole pitch; The height of magnetic source is h=(0.7 ~ 0.8)
in formula, S is that magnetic pole section is amassed.
Because pole pitch of the present invention is 4.02 ~ 17mm, therefore when opening magnetic system is by planar alignment, its Magnetic field inhomogeneity coefficient is C=π/l, its magnetic field force Fmy is Fmy=(HgradH) y=CH0exp (-2cy), in formula, Fmy is magnetic field force, and unit is A2/m3; H is magnetic field intensity, and unit is A/m; GradH is magnetic field gradient, and unit is A/m2; H0 is the magnetic field intensity on pole-face (pole gap face), and unit is A/m; Y is some size in the Y direction in space, and unit is m.
From formula F my=(HgradH) y=CH0exp (-2cy), in magnetic field a bit (any spatial value y) realize the maximization of Fmy, need to realize C → ∞+, can by reducing pole pitch l to realize as far as possible; And reduce pole pitch l and can realize small pole pitch by magnetic source close-packed arrays, or realize by reducing the magnetic pole strength length of side; Therefore reduce the volume of magnetic source, the magnetic source quantity arranged in same volume is more, and magnetic source quantity is more, number of magnetic poles is more, the pole pitch of adjacent two magnetic sources arranged in same volume is less, therefore within the scope of small size, forming the uneven magnetic peak change of more crypto set, its absorption affinity is stronger, with reference to Fig. 2.
(2) size of magnetic source of the present invention is less, the width of magnetic source is 4mm ~ 15mm, and by using little magnetic source to form many magnetic poles, be expert to row and upwards all realize producing the magnetic hill change of more crypto set, thus Star is to raising concentrate grade and the effect of the rate of recovery.
The number of poles of magnetic system of the present invention
wherein L is magnetic system length; L is magnetic system pole span.By using little magnetic source, be expert to fluctuated to realizing magnetic hill value within the scope of small size with row, therefore avoid Lou choosing, ensure that treating capacity; Meanwhile, magnetic hill value height is clearly demarcated, and the absorption affinity on magnetic system surface is formed with line or point, thus ore particle under the effect of absorption affinity at magnetic source surface rollers, effectively can reject and be mingled with, improve concentrate taste and the rate of recovery, be easy to sort fine fraction, micro-size fraction mineral.
The present invention is when magnetic separation, mineral are sent to above concentration equipment by conveyer belt, because of magnetic hill value (namely the absorption affinity on concentration equipment surface is fluctuated) fluctuated on concentration equipment, therefore mineral are through concentration equipment, its varigrained mineral are sorted out under the absorption of different absorption affinity, because mineral are in continuous movement, therefore the mineral be not sorted out can carry out sorting in the magnetic hill value place below, the present invention because of magnetic hill value fluctuated within the scope of small size, therefore be easy to graded shot level and micro-size fraction mineral.
For the magnetic source of one group of 15mm × 4mm × 5mm (little magnetic source) and 150mm × 40mm × 50mm (large magnetic source), little magnetic source and large magnetic source are arranged in same volume, and the distance between adjacent two magnetic sources is 0.5 millimeter, 2D analysis is carried out in application limited element analysis technique (ANSYS10.0), analyze its magnetic peak change to learn: when given volume, magnetic source material is identical, under the condition that distance between magnetic source with magnetic source is identical, the large magnetic source of magnetic peakedness ratio between the magnetic source using little magnetic source to draw and magnetic source is more intensive, be easier to sort fine fraction and micro-size fraction mineral.
Following for two groups of 15mm × 4mm × 5mm (little magnetic source), two groups of magnetic sources are arranged in same volume respectively, wherein in one group of magnetic source, distance between adjacent two magnetic sources is 0.5 millimeter, distance between adjacent two magnetic sources of another group is 1.5 millimeters, 2D analysis is carried out in application limited element analysis technique (ANSYS10.0), analyze its magnetic peak change to learn: when given volume, magnetic source material is identical, under the condition that magnetic source size is identical, distance between magnetic source and magnetic source is less, the large magnetic source of magnetic peakedness ratio between the magnetic source drawn and magnetic source is more intensive, be easier to sort fine fraction and micro-size fraction mineral.
Exemplify four kinds of preparation methods of concentration equipment of the present invention as follows:
(1) for the concentration equipment of sorting limonite, bloodstone:
On the cylindrical tube that diameter is 1200mm, length 2000mm, radially be axially covered with small permanent magnet sources, and adjacent two small magnetic source polarity are contrary, this small magnetic source trade mark N42, long is 15mm, and wide is 4mm, height is 3mm, and wherein high is the excitatory direction of magnetic source.The Surface field intensity in magnetic action face is 4500 ~ 5000GS.Cylindrical tube is magnetic conductor, and its general steel plate being 8mm by thickness is made; This cylindrical tube is connected with the transmission device of concentration equipment by axle.Making magnetic roller is thus diameter 1200mm, and length is the concentration equipment of 2000mm.On this concentration equipment, install knot screen and unload ore deposit device, namely this concentration equipment can be used for the sorting of limonite, bloodstone, and day process raw ore can reach 500 tons.
Such as carry out sorting to the limonite that granularity is 0.15mm, found ring pulsating magnetic selection device contrast test with SLON, when raw ore taste is 39.63%, it is 55.26% that this concentration equipment can obtain concentrate taste, and mine tailing is 16.13%, and the rate of recovery is 83.66%; And the concentrate that SLON founds ring pulsating magnetic selection device is 52.54%, mine tailing is 22.8%, and the rate of recovery is 75.55%.
(2) for the concentration equipment of iron in sorting red mud:
(1) is adopted to prepare for the method in the concentration equipment of sorting limonite, bloodstone the concentration equipment that magnetic roller is diameter 1500mm, long 4000mm, small magnetic source trade mark N48, long is 15mm, and wide is 4mm, height is 5mm, and wherein high is the excitatory direction of magnetic source.The Surface field intensity in magnetic action face is 5000 ~ 5500GS.On this concentration equipment, install knot screen and unload ore deposit device, namely this concentration equipment can be used for the sorting of iron in red mud, and day process raw ore can reach 1000 tons.
Such as carry out sorting to the red mud of Pingguo area of Guangxi, when raw ore taste is 26.02%, it is 58.23% that this concentration equipment can obtain concentrate taste, and mine tailing taste is 21.05%, and the rate of recovery is 41.70%.
(3) for the magnetic separator of sorting chromite:
(1) is adopted to prepare for the method in the concentration equipment of sorting limonite, bloodstone the concentration equipment that magnetic roller is diameter 1200mm, long 2000mm, small magnetic source trade mark N42, long is 15mm, and wide is 4mm, height is 4mm, and wherein high is the excitatory direction of magnetic source.The Surface field intensity in magnetic action face is 3000 ~ 3500GS.On this concentration equipment, install knot screen and unload ore deposit device, namely this concentration equipment can be used for the sorting of chromite, and day process raw ore can reach 500 tons.
Be such as that 0.15mm chromite carries out sorting to granularity, when in raw ore taste, chromium is 28.17%, the taste that this concentration equipment can obtain concentrate taste chromium is 49.27%, and the taste of iron is 16.70%, in mine tailing, the taste of chromium is 10.70%, and the rate of recovery of chromium is 78.00%.
(4) for the concentration equipment of sorting manganese ore:
(1) is adopted to prepare for the method in the concentration equipment of sorting limonite, bloodstone the concentration equipment that magnetic roller is diameter 1500mm, long 3000mm, small magnetic source trade mark N50, long is 9mm, and wide is 9mm, height is 6mm, and wherein high is the excitatory direction of magnetic source.The Surface field intensity in magnetic action face is 5500 ~ 6000GS.On this concentration equipment, install knot screen and unload ore deposit device, namely this concentration equipment can be used for the sorting of chromite, and day process raw ore can reach 750 tons.
Be such as that 0.2mm manganese ore carries out sorting to granularity, when in raw ore taste, chromium is 24.7%, it is 42.38% that this concentration equipment can obtain concentrate taste, and mine tailing taste is 7.10%, and the rate of recovery is 65.20%.
Above-mentioned four kinds of concentration equipments have all commercially achieved successfully.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. utilize small pole pitch to form a concentration equipment for high density magnetic hill value, it is characterized in that, it comprises the identical magnetic source of multiple size, and multiple magnetic source is arranged in parallel, and closely arranges between adjacent two magnetic sources;
Magnetic source surface all forms intensive uneven magnetic hill, and the magnetic hill value at adjacent two magnetic source edges is greater than the magnetic hill peak value of magnetic source center.
2. utilize small pole pitch to form the concentration equipment of high density magnetic hill value as claimed in claim 1, it is characterized in that, magnetic source is electromagnet source or permanent magnet sources.
3. utilize small pole pitch to form the concentration equipment of high density magnetic hill value as claimed in claim 2, it is characterized in that, the distance width between two adjacent magnetic sources is 0.02 ~ 2 millimeter.
4. utilize small pole pitch to form the concentration equipment of high density magnetic hill value as claimed in claim 3, it is characterized in that, the width of each magnetic source is 4 ~ 15 millimeters.
5. utilize small pole pitch to form the concentration equipment of high density magnetic hill value as claimed in claim 4, it is characterized in that, it is for graded shot level mineral, and its shape is cuboid, square, trapezoidal, grooved or polygon.
6. the small pole pitch that utilizes according to any one of claim 1-5 forms the concentration equipment of high density magnetic hill value, and it is characterized in that, multiple magnetic source is arranged in multiple lines and multiple rows, and the polarity of each magnetic source is contrary with the polarity of adjacent four magnetic sources.
7. the small pole pitch that utilizes according to any one of claim 1-5 forms the concentration equipment of high density magnetic hill value, it is characterized in that, multiple magnetic source is arranged in multiple lines and multiple rows, the polarity of each magnetic source be expert to/arrange to contrary with the polarity of adjacent four magnetic sources, the polarity of each magnetic source at row to/row to contrary with the polarity of adjacent four magnetic sources.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610013869.9A CN105413858A (en) | 2016-01-11 | 2016-01-11 | Magnetic separation device for forming high-density magnetic peak value through small pole pitch |
| PCT/CN2016/000337 WO2017120707A1 (en) | 2016-01-11 | 2016-06-23 | Magnetic separation device forming high-density magnetic peak values using micro pole pitches |
| ZA2016/05788A ZA201605788B (en) | 2016-01-11 | 2016-08-19 | A magnetic separation device with high-density magnetic peak formed via small pole distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610013869.9A CN105413858A (en) | 2016-01-11 | 2016-01-11 | Magnetic separation device for forming high-density magnetic peak value through small pole pitch |
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| CN105413858A true CN105413858A (en) | 2016-03-23 |
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| CN201610013869.9A Pending CN105413858A (en) | 2016-01-11 | 2016-01-11 | Magnetic separation device for forming high-density magnetic peak value through small pole pitch |
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| Country | Link |
|---|---|
| CN (1) | CN105413858A (en) |
| WO (1) | WO2017120707A1 (en) |
| ZA (1) | ZA201605788B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017120707A1 (en) * | 2016-01-11 | 2017-07-20 | 潘静娴 | Magnetic separation device forming high-density magnetic peak values using micro pole pitches |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112916204B (en) * | 2021-01-25 | 2022-03-18 | 滦州华翼实业有限公司 | Weak magnetic ore iron separation process and vertical ring magnetic separator used in process |
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- 2016-01-11 CN CN201610013869.9A patent/CN105413858A/en active Pending
- 2016-06-23 WO PCT/CN2016/000337 patent/WO2017120707A1/en active Application Filing
- 2016-08-19 ZA ZA2016/05788A patent/ZA201605788B/en unknown
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Also Published As
| Publication number | Publication date |
|---|---|
| ZA201605788B (en) | 2017-11-29 |
| WO2017120707A1 (en) | 2017-07-20 |
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Application publication date: 20160323 |