CN113492058A - Mechanical swing dispersing device for permanent magnet drum type magnetic separator - Google Patents
Mechanical swing dispersing device for permanent magnet drum type magnetic separator Download PDFInfo
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- CN113492058A CN113492058A CN202110606884.5A CN202110606884A CN113492058A CN 113492058 A CN113492058 A CN 113492058A CN 202110606884 A CN202110606884 A CN 202110606884A CN 113492058 A CN113492058 A CN 113492058A
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- screen
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- permanent magnet
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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
- 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
- B03C1/12—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with magnets moving during operation; with movable pole pieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
Abstract
The invention relates to a mechanical swing dispersing device for a permanent magnet drum type magnetic separator, which comprises a motor, a crank-link mechanism, a swing frame and a screen; the screen cloth is located between the separation cell body and the permanent magnetism drum of permanent magnetism drum magnet separator, and the both ends of screen cloth extend to the outside that the permanent magnetism drum corresponds the end, and the motor passes through crank link mechanism drive rocking frame, drives the reciprocal swing of screen cloth along permanent magnetism drum circumference. The invention adopts a mechanical dispersion mode to effectively disperse the ore pulp in the separation area, and overcomes the magnetic agglomeration and the mechanical agglomeration among the strong magnetic magnetite, the intergrowth and the gangue through the mechanical shearing action in the magnetic separation process, thereby improving the selectivity of the wet-type cylinder magnetic separator.
Description
Technical Field
The invention relates to the technical field of mineral magnetic separation, in particular to a mechanical swing dispersing device for a permanent magnet drum type magnetic separator.
Background
The low-intensity magnetic separation is to realize the purpose of separating minerals according to magnetism by utilizing the difference of magnetic force of ore particles with different magnetism in a non-uniform magnetic field of a magnetic separator. The permanent magnetic drum magnetic separator is one of the most common magnetic separation devices in magnetite beneficiation, and is mainly used for rough separation, scavenging and fine separation of magnetite after grinding.
The permanent magnet drum magnetic separator is used for separating nonmagnetic gangue ore particles into tailings, separating monomer magnetite, enriched intergrowths and poor intergrowths (magnetic mixtures) into magnetic products, and then feeding the magnetic products into the next stage of ore grinding operation. The traditional wet magnetic separation has low selectivity, and the main reasons are as follows: the magnetic difference between the magnetic mineral and the nonmagnetic mineral is much larger than that between the magnetite and the intergrowth, and the magnetite particles are promoted to be attached to quartz by the high physical and mechanical activity of the ground materials, and part of the nonmagnetic particles enter the magnetic product due to the magnetic agglomeration and the physical and mechanical agglomeration of the ferromagnetic particles. If the sorted concentrate enters the subsequent grinding operation, the magnetite particles can be over-ground.
At present, the method for improving the selectivity of the permanent magnet drum magnetic separator mainly comprises the following steps: the method has the advantages that the separation magnetic field (such as an 'ultra-pure fine iron powder magnetic separator' disclosed in the Chinese utility model patent with the publication number of CN 208194661U) is reduced, the magnetic system structure (such as a 'permanent magnetic separation column' disclosed in the Chinese invention patent with the publication number of CN 103846155B) is changed, the dispersibility of ore pulp is improved by using rinsing water (such as a 'fine-extraction slag-reduction magnetic separator' disclosed in the Chinese invention patent with the publication number of CN 103785528B) and the number of separation sections is increased, and the technical scheme can increase the use number of equipment and increase the production cost. How to improve the selectivity of the permanent magnetic drum magnetic separator and simultaneously improve the production efficiency and reduce the production cost is an important trend for the development of future magnetic separation equipment.
Disclosure of Invention
The invention provides a mechanical swing dispersing device for a permanent magnet drum type magnetic separator, which effectively disperses ore pulp in a separation area by adopting a mechanical dispersing mode, and overcomes magnetic agglomeration and mechanical agglomeration among strong magnetic magnetite, intergrowth and gangue through mechanical shearing action in the magnetic separation process, thereby improving the selectivity of a wet drum type magnetic separator.
In order to achieve the purpose, the invention adopts the following technical scheme:
a mechanical swing dispersing device for a permanent magnet drum type magnetic separator comprises a motor, a crank-link mechanism, a swing frame and a screen; the screen cloth is located between the separation cell body and the permanent magnetism drum of permanent magnetism drum magnet separator, and the both ends of screen cloth extend to the outside that the permanent magnetism drum corresponds the end, and the motor passes through crank link mechanism drive rocking frame, drives the reciprocal swing of screen cloth along permanent magnetism drum circumference.
The motor is fixedly arranged on a rack of the permanent magnet drum type magnetic separator; the swing frame consists of 1 swing rod and 2 symmetrically arranged connecting arms, the upper ends of the connecting arms are supported on a frame of the permanent magnet drum type magnetic separator, and the lower ends of the 2 connecting arms are respectively connected with the corresponding ends of the screen cloth; the connecting arm close to one side of the motor is connected with the crank connecting rod mechanism through the oscillating bar.
The screen cloth passes through the bolt detachably to be connected between 2 linking arms.
The crank-link mechanism is composed of a crank and a link rod, one end of the crank is connected with the motor shaft through a key, the other end of the crank is hinged with the corresponding end of the link rod, and the other end of the link rod is connected with a sliding groove on the swing rod in a sliding mode through a sliding block.
The screen is of an arc-shaped structure, and the central angle of the screen is 45-100 degrees.
The middle part of the screen is provided with a plurality of auxiliary screens, and the auxiliary screens are vertical to the swinging direction of the screen and are arranged along the width direction of the screen; the top surface of the auxiliary screen is 5-10 mm higher than the top surface of the screen, and the distance between the auxiliary screens is 20-100 mm.
The screen mesh size of screen cloth, auxiliary screen cloth is 3 ~ 10 mm.
The screen cloth and the auxiliary screen cloth are made of polyurethane or non-magnetic stainless steel and have the thickness of 2-8 mm.
The distance between the screen and the permanent magnet cylinder can be adjusted, and the distance is 5-100 mm.
Compared with the prior art, the invention has the beneficial effects that:
1) the ore pulp in the separation area is effectively dispersed by adopting a mechanical dispersion mode, and the magnetic agglomeration and the mechanical agglomeration among the strong magnetic magnetite, the intergrowth and the gangue are overcome through the mechanical shearing action in the magnetic separation process, so that the selectivity of the wet-type cylindrical magnetic separator is improved.
2) The purpose of further improving the sorting efficiency can be realized by adjusting the swinging amplitude, the swinging frequency, the sieve pore size and the distance between the sieve and the permanent magnetic cylinder.
Drawings
FIG. 1 is a schematic structural diagram of a mechanical swing dispersion apparatus for a permanent magnet drum magnetic separator according to the present invention.
Fig. 2 is a view from direction a in fig. 1.
Fig. 3 is a schematic structural view of the screen and the auxiliary screen according to the present invention.
FIG. 4 is a schematic view of the mechanical oscillating dispersing device of the present invention applied to a permanent magnet drum separator.
In the figure: 1. motor 2, crank 3, connecting rod 4, swing rod 5, connecting arm 6, screen 7, auxiliary screen 8, frame 9, permanent magnetic cylinder 10, magnetic system 11, separation tank 12, ore feed chute 13, tailing chute 14, tailing pipe 15, concentrate chute
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1 and 4, the mechanical swing dispersing device for a permanent magnet drum type magnetic separator according to the present invention includes a motor 1, a crank link mechanism, a swing frame and a screen 6; the screen cloth 6 is arranged between a separation groove body 11 and a permanent magnetic cylinder 9 of the permanent magnetic cylinder magnetic separator, two ends of the screen cloth 6 extend to the outer side of the corresponding end of the permanent magnetic cylinder 9, and the motor 1 drives the swing frame through a crank link mechanism to drive the screen cloth 6 to swing in a circumferential reciprocating mode along the permanent magnetic cylinder 9.
The motor 1 is fixedly arranged on a frame of the permanent magnet drum type magnetic separator; the swing frame consists of 1 swing rod 4 and 2 symmetrically arranged connecting arms 5, the upper ends of the connecting arms 5 are supported on a frame of the permanent magnetic drum type magnetic separator, and the lower ends of the 2 connecting arms 5 are respectively connected with the corresponding ends of the screen 6; the connecting arm 5 close to one side of the motor 1 is connected with the crank connecting rod mechanism through the swing rod 4.
The screen 6 is detachably connected with the 2 connecting arms 5 through bolts.
As shown in fig. 2, the crank-link mechanism is composed of a crank 2 and a link 3, one end of the crank 2 is connected with the motor shaft through a key, the other end of the crank 2 is hinged with the corresponding end of the link 3, and the other end of the link 3 is connected with a sliding groove on the swing rod 4 through a sliding block in a sliding manner.
The screen 6 is of an arc structure, and the central angle of the screen is 45-100 degrees.
As shown in fig. 3, a plurality of auxiliary screens 7 are arranged in the middle of the screen 6, and the auxiliary screens 7 are perpendicular to the swinging direction of the screen 6 and are arranged along the width direction of the screen 6; the top surface of the auxiliary screen 7 is 5-10 mm higher than the top surface of the screen 6, and the distance between the auxiliary screens 7 is 20-100 mm.
The screen meshes of the screen 6 and the auxiliary screen 7 are 3-10 mm in size.
The screen 6 and the auxiliary screen 7 are made of polyurethane or non-magnetic stainless steel and have the thickness of 2-8 mm.
The distance between the screen 6 and the permanent magnet cylinder 9 can be adjusted, and the distance is 5-100 mm.
As shown in fig. 1, 2 and 4, the mechanical swing dispersing device for the permanent magnet drum type magnetic separator is integrally installed in the permanent magnet drum type magnetic separator, the screen 6 is arranged between a separation groove body 11 and a permanent magnet drum 9 of the permanent magnet drum type magnetic separator, the motor 1 is arranged on a frame 8 outside the permanent magnet drum 9, the upper end of the swing rod 4 is hinged with a central shaft of the permanent magnet drum 9, and the swing rod is driven by a crank link mechanism to drive the screen 6 to swing back and forth along the circumferential direction of the permanent magnet drum 9.
After being magnetized by a magnetic field, the strong magnetic magnetite can generate non-selective inclusion with other intergrowths or gangue through magnetic field force or magnetic agglomeration force, and the content of the strong magnetic magnetite in the intergrowth particles can also generate positive influence on the magnetism of the intergrowth particles, so that the strength of the magnetic agglomeration is firmer; in the traditional wet magnetic separation process, the dispersion effect on the aggregates is weaker only by reducing the magnetic field intensity or increasing the rinsing water and the like; the invention relates to a mechanical swing dispersing device, which mechanically disperses ore pulp in a sorting area through a screen mesh which swings in a reciprocating way, and can further improve the sorting efficiency by adjusting the swing amplitude, the swing frequency, the size of a screen mesh and the distance between the screen mesh and a permanent magnet cylinder; in the movement process of the screen, the shearing force generated to the ore particles is dozens to hundreds of times greater than the magnetic agglomeration force, and the selectivity of the wet-type drum magnetic separator can be obviously improved, so that the iron grade of the sorted concentrate is improved, and the production efficiency in the magnetic separation process is improved.
When the mechanical swing dispersing device for the permanent magnet drum magnetic separator is applied, magnetite pulp is fed into an ore feeding groove 12 positioned above a separation groove body 11 of the permanent magnet drum magnetic separator, and the magnetite pulp moves upwards under the action of water flow ejected by a dispersing water pipe and is contacted with a permanent magnet cylinder 9. Magnetic particles in the ore pulp are adsorbed on the outer surface of the permanent magnetic cylinder 9 by a magnetic field generated by the magnetic system 10, and gradually move towards the concentrate trough 15 side along with the rotation of the permanent magnetic cylinder 9. In the process of adsorbing the magnetic ore particles on the surface of the permanent magnet cylinder 9, the ferromagnetic magnetite particles and the intergrowth particles and gangue particles generate agglomeration and inclusion, when the agglomeration and inclusion meet the swinging screen 6 and the auxiliary screen 7 thereon, the agglomeration and inclusion are forcedly scattered by mechanical force, the ferromagnetic magnetite particles are adsorbed on the surface of the permanent magnet cylinder 9 again by the magnetic field generated by the magnetic system 10, and the scattered intergrowth and gangue particles are settled at the bottom of the tailing tank 13 and flow out through the tailing pipe 14 to form tailings. In the permanent magnet drum type magnetic separator, the process of agglomeration-dispersion-agglomeration is carried out circularly, when the strong magnetic magnetite particles adsorbed on the surface of the permanent magnet drum 9 move to a position outside the action range of the mechanical swing dispersion device, the strong magnetic magnetite particles can be rinsed again by water flow generated by the concentrate rinsing water pipe, and the iron grade of magnetite concentrate is further improved. When the magnetite particles adsorbed on the surface of the permanent magnet cylinder 9 continue to move to the tail end of the magnetic system 10, the adsorption effect of the magnetic field on the magnetite disappears, and under the action of the water flow of the concentrate flushing water pipe, the magnetite can be rapidly separated from the surface of the permanent magnet cylinder 9 and falls into the concentrate tank 15 to form concentrate. Meanwhile, the permanent magnetic cylinder 9 washed clean by the concentrate flushing water continues to rotate to enter the next separation cycle.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A mechanical swing dispersing device for a permanent magnet drum type magnetic separator is characterized by comprising a motor, a crank connecting rod mechanism, a swing frame and a screen; the screen cloth is located between the separation cell body and the permanent magnetism drum of permanent magnetism drum magnet separator, and the both ends of screen cloth extend to the outside that the permanent magnetism drum corresponds the end, and the motor passes through crank link mechanism drive rocking frame, drives the reciprocal swing of screen cloth along permanent magnetism drum circumference.
2. The mechanical oscillating spreader of claim 1, wherein the motor is fixed to the frame of the permanent magnet drum separator; the swing frame consists of 1 swing rod and 2 symmetrically arranged connecting arms, the upper ends of the connecting arms are supported on a frame of the permanent magnet drum type magnetic separator, and the lower ends of the 2 connecting arms are respectively connected with the corresponding ends of the screen cloth; the connecting arm close to one side of the motor is connected with the crank connecting rod mechanism through the oscillating bar.
3. The mechanically oscillating dispersing apparatus of claim 1 wherein the screen mesh is detachably connected to the 2 connecting arms by bolts.
4. The mechanical oscillating dispersion device for permanent-magnet drum magnetic separators of claim 1, wherein the crank-link mechanism comprises a crank and a link, one end of the crank is connected with the motor shaft through a key, the other end of the crank is hinged with the corresponding end of the link, and the other end of the link is connected with the sliding groove on the oscillating bar through a sliding block in a sliding manner.
5. The mechanical oscillating dispersing apparatus of claim 1, wherein the screen is of an arc shape with a central angle of 45 ° to 100 °.
6. The mechanical swinging dispersion device for the permanent magnet drum type magnetic separator as claimed in claim 1, 3 or 5, wherein a plurality of auxiliary screens are arranged in the middle of the screen, the auxiliary screens are perpendicular to the swinging direction of the screen and are arranged along the width direction of the screen; the top surface of the auxiliary screen is 5-10 mm higher than the top surface of the screen, and the distance between the auxiliary screens is 20-100 mm.
7. The mechanical oscillating dispersing device for the permanent magnet drum type magnetic separator as claimed in claim 6, wherein the screen mesh and the auxiliary screen mesh have a mesh size of 3-10 mm.
8. The mechanical oscillating dispersing device of claim 6, wherein the screen and the auxiliary screen are made of polyurethane or non-magnetic stainless steel and have a thickness of 2-8 mm.
9. The mechanical oscillating dispersing device of claim 1, wherein the distance between the screen and the permanent magnetic cylinder is adjustable and is 5-100 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110606884.5A CN113492058B (en) | 2021-06-01 | 2021-06-01 | Mechanical swing dispersing device for permanent magnet drum type magnetic separator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110606884.5A CN113492058B (en) | 2021-06-01 | 2021-06-01 | Mechanical swing dispersing device for permanent magnet drum type magnetic separator |
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| CN113492058A true CN113492058A (en) | 2021-10-12 |
| CN113492058B CN113492058B (en) | 2022-12-23 |
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| CN202110606884.5A Active CN113492058B (en) | 2021-06-01 | 2021-06-01 | Mechanical swing dispersing device for permanent magnet drum type magnetic separator |
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| CN107029853A (en) * | 2017-06-19 | 2017-08-11 | 合肥宝创电子科技有限公司 | A kind of build concrete processes flour mill |
| CN110302889A (en) * | 2019-07-31 | 2019-10-08 | 攀枝花学院 | A kind of dense media ore screening installation |
| CN111841887A (en) * | 2020-08-06 | 2020-10-30 | 辽宁科技大学 | High-frequency vibration cylinder type magnetic separator and working method thereof |
| CN111992280A (en) * | 2020-08-17 | 2020-11-27 | 张国进 | Agricultural production equipment for grinding and smashing |
| CN112077117A (en) * | 2020-08-27 | 2020-12-15 | 上海旌轩企业管理咨询中心 | Automatic crushing and automatic sorting mechanism for construction waste |
| CN112275771A (en) * | 2020-10-10 | 2021-01-29 | 沈洁 | Industrial garbage solid-liquid crushing and separating device and operation method thereof |
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2021
- 2021-06-01 CN CN202110606884.5A patent/CN113492058B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000070864A (en) * | 1998-08-27 | 2000-03-07 | Yamamoto Co Ltd | Mechanism for controlling angle of inclination of rocking and classifying apparatus |
| JP2005118729A (en) * | 2003-10-20 | 2005-05-12 | Seirei Ind Co Ltd | Grain shaking sorter |
| CN2702780Y (en) * | 2004-06-29 | 2005-06-01 | 冶金工业部马鞍山矿山研究院 | Permanent magnetic pulsating field wet drum type magnetic separator |
| CN103071587A (en) * | 2013-01-31 | 2013-05-01 | 沈阳恒创思源矿业科技开发有限公司 | Rotating magnetic field efficient dispersion magnetic separator |
| CN103749758A (en) * | 2014-02-18 | 2014-04-30 | 黄山市祁门县祁塔茶叶机械有限公司 | Dual-rod linkage type tea leaf carding machine |
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| CN107029853A (en) * | 2017-06-19 | 2017-08-11 | 合肥宝创电子科技有限公司 | A kind of build concrete processes flour mill |
| CN110302889A (en) * | 2019-07-31 | 2019-10-08 | 攀枝花学院 | A kind of dense media ore screening installation |
| CN111841887A (en) * | 2020-08-06 | 2020-10-30 | 辽宁科技大学 | High-frequency vibration cylinder type magnetic separator and working method thereof |
| CN111992280A (en) * | 2020-08-17 | 2020-11-27 | 张国进 | Agricultural production equipment for grinding and smashing |
| CN112077117A (en) * | 2020-08-27 | 2020-12-15 | 上海旌轩企业管理咨询中心 | Automatic crushing and automatic sorting mechanism for construction waste |
| CN112275771A (en) * | 2020-10-10 | 2021-01-29 | 沈洁 | Industrial garbage solid-liquid crushing and separating device and operation method thereof |
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