CN108057508B - Air-assisted dry magnetic separator - Google Patents
Air-assisted dry magnetic separator Download PDFInfo
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- CN108057508B CN108057508B CN201711340672.7A CN201711340672A CN108057508B CN 108057508 B CN108057508 B CN 108057508B CN 201711340672 A CN201711340672 A CN 201711340672A CN 108057508 B CN108057508 B CN 108057508B
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- shell
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- flow guide
- guide device
- magnetic separator
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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
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
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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
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- Food Science & Technology (AREA)
- Combined Means For Separation Of Solids (AREA)
- Electromagnets (AREA)
Abstract
The invention discloses an air-assisted dry magnetic separator, which belongs to the field of dry magnetic separators and comprises at least one magnetic separation unit, wherein the magnetic separation unit comprises an electromagnetic coil group, a shell and a flow guide device, an air inlet is formed in the lower part of the shell, an air outlet is formed in the upper part of the shell, the flow guide device is arranged in an airflow channel between the air inlet and the air outlet in the shell, the electromagnetic coil group is arranged on the outer side of the shell, and a material collecting groove is formed in the inner side of. The invention relates to a deironing technology for solving the problem of conveying materials by system air, which can realize material dispersion and avoid water injection.
Description
Technical Field
The invention belongs to the field of dry magnetic separators, and particularly relates to a device capable of removing iron powder, iron slag and small-size iron granules contained in granular gas in certain granular gas conveying systems in the industries of building materials, chemical engineering, metallurgy and the like.
Background
Iron particles have an extremely adverse effect on equipment life, finished product performance, system energy consumption, and the like. Therefore, the iron aggregate removal is very concerned in the process, and the iron aggregate removal process is particularly important in the industries of building materials, chemical engineering, metallurgy and the like. At present, a wet magnetic separator adopts a method of injecting water into a magnetic separation cylinder to disperse and suspend powder so as to separate iron slag.
The problems with such techniques are:
(1) the water injection makes the ground powder stick again.
(2) Sealing under liquid state.
(3) Many operating components have many failure points.
The roller type iron slag separator has the advantages that materials are accumulated to pass through the roller, the iron slag near the roller is effectively absorbed, the materials are far away from the roller on the upper layer of the materials and are difficult to penetrate through a material layer, the materials are directly thrown out along with the mineral materials, and the separated materials are not dispersed.
Generally speaking, the existing wet magnetic separator and drum-type magnetic separator have various defects, although the wet magnetic separator can disperse and suspend materials, the negative effects caused by water injection are also obvious, and the drum-type magnetic separator does not need water injection, but does not remove iron thoroughly because of insufficient dispersion of the materials.
(1) Mineral aggregate grinding and conveying are mostly carried and stored in a dry environment, and water injection walks the opposite way, so that the defects of increased energy consumption, complex process system and the like are caused.
(2) The drum-type magnetic separator has incomplete iron removal and directly influences the quality of the granular materials.
For the reasons, the iron removal technology of the existing mineral aggregate magnetic separator is not perfect, and the current situation needs to be changed by breaking through a new technology.
Disclosure of Invention
The invention aims to: the utility model provides an air-assisted dry magnetic separator, which solves the iron removal technology of the system for conveying materials by air, and can realize material dispersion and avoid water injection.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a dry-type magnet separator is sent to wind, includes at least one magnetic separation unit, and the magnetic separation unit includes solenoid group, casing and guiding device, and the casing lower part is equipped with the air intake, and upper portion is equipped with the air outlet, is equipped with guiding device in the air current passageway between air intake and the air outlet in the casing, and the casing outside is equipped with solenoid group, and the casing inboard is equipped with the groove that gathers materials in solenoid group below.
The air-conveying dry magnetic separator provided by the invention is an air flow through type iron removal machine, the passing section is flexible and changeable, the adaptability is strong, the material dispersion effect is good by adopting a through type iron removal mode and a flow guide device, and the purpose of rapidly and efficiently removing iron without water injection is realized. The inside air current channel that forms of casing, the passageway center is equipped with non-magnet guiding device, magnet separator casing medial surface below is equipped with wide-angle collecting tank and is used for collecting the scum, the magnet separator casing is the non-magnet material, the outer winding solenoid of casing, solenoid gets electric and produces corresponding rank magnetic force, and enable the comparatively even cover air current channel of magnetic force in, the scum is adsorbed at magnet separator casing inner wall, solenoid loses the electricity after, the scum is along inner wall landing to lower part collecting tank, can realize getting electric and losing control of solenoid intermittent type formula through electrical control system, all parts of whole in-process magnet separator are static.
Alternatively, the deflector has a deflector portion which is smaller at an end opposite the air inlet and larger at an end opposite the air outlet, and has an outer cross-sectional shape matching a cross-sectional shape of the inner wall of the housing. In the scheme, the external shape of the flow guide device is specifically matched with the shape of the inner wall of the shell, so that the iron slag on each point in the airflow channel passing through the flow guide device is directly stressed to point to the inner wall of the shell, and the iron removal efficiency is high.
As a further option, the flow guiding device further has a connecting portion and a connecting bracket, the connecting portion is fixedly connected to the housing through the connecting bracket, and the connecting portion has an external shape similar to the flow guiding portion, but is larger at one end relative to the air inlet and smaller at one end relative to the air outlet.
As a further option, the part of the shell corresponding to the flow guiding device is a cylinder, the flow guiding part and the connecting part are both cones, and the flow guiding device is positioned at the center of the shell of the cylinder and is coaxial with the shell of the cylinder.
As another further option, the part of the shell corresponding to the flow guide device is a regular polygonal prism, the flow guide part and the connecting part are both regular polygonal pyramids, and the flow guide device is positioned at the center of the shell of the regular polygonal prism and is coaxial with the shell.
Alternatively, the electromagnetic coil group includes intermittently energized electromagnetic coils arranged circumferentially around the air guide outside the housing.
As a further option, a plurality of magnetic separation units are connected in series end to end, the air inlet of each stage of magnetic separation unit is communicated with the air outlet of the previous stage of magnetic separation unit, and the electromagnetic coils of the adjacent two stages of magnetic separation units are alternately electrified. In the scheme, a plurality of magnetic separation units form a group, and the electromagnetic coils of the magnetic separation units are controlled by an electric system to be alternately electrified, so that the full-time iron removal of the material-carrying gas channel can be realized.
Alternatively, the material collecting groove is annularly arranged between the lower part of the shell and the air inlet.
Alternatively, the shell is a hollow cylinder, the bottom opening is an air inlet, the top opening is an air outlet, the flow guide device is arranged on one side of the air outlet and is positioned in the center of the shell of the cylinder and coaxial with the shell, the electromagnetic coil group is arranged on the outer side of the shell in the circumferential direction around the flow guide device, and the material collecting groove is arranged between the bottom of the shell and the air inlet in an annular mode.
The main scheme and the further selection schemes can be freely combined to form a plurality of schemes which are all adopted and claimed by the invention; in the invention, the selection (each non-conflict selection) and other selections can be freely combined. The skilled person in the art can understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the scheme of the present invention, and the technical solutions are not exhaustive herein.
The invention has the beneficial effects that: the air-assisted dry magnetic separator has internal through type iron removal, the ventilation section can be made into different shapes according to actual requirements, the shape of the section of the gas channel is not limited, and the adaptability is strong; each part has no rubber product and has strong adaptability to high-temperature environment; no moving part is arranged on the structure design, the failure rate is low, and the use cost is low; the magnetic force of the electromagnetic coil can be controlled through an electric control system, so that the device is suitable for removing iron slag with different particle sizes, and has a wide application prospect; because the diversion device exists, the iron slag on each point in the channel is stressed to directly point to the inner wall of the shell, and the iron removal efficiency is high.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic elevational view of an embodiment of the invention;
FIG. 3 is a schematic representation of the use of an embodiment of the present invention;
wherein, 1 is an electromagnetic coil group, 2 is a shell, 3 is a flow guide device, 4 is an air inlet, 5 is an air outlet, 6 is a material collecting groove, 7 is a slag discharge port, 8 is a flow guide part, 9 is a connecting part, 10 is a connecting bracket, 11 is a vertical mill, 12 is a dust collector, and 13 is an air-driven dry magnetic separator.
Detailed Description
The following non-limiting examples serve to illustrate the invention.
Example 1:
referring to fig. 1 and 2, the air-assisted dry magnetic separator comprises at least one magnetic separation unit, wherein the magnetic separation unit comprises an electromagnetic coil group 1, a shell 2 and a flow guide device 3, an air inlet 4 is formed in the lower portion of the shell 2, an air outlet 5 is formed in the upper portion of the shell 2, the flow guide device 3 is arranged in an air flow channel between the air inlet 4 and the air outlet 5 in the shell 2, the electromagnetic coil group 1 is arranged on the outer side of the shell 2, and a material collecting groove 6 is formed in the inner side of the shell 2 and. When iron is removed, the electromagnetic coil group 1 is electrified, and iron-containing particles are adsorbed on the inner wall of the shell 2; when slag is discharged, the electromagnetic coil group 1 loses power, and iron-containing particles slide to the material collecting groove 6 and are discharged from the slag discharge port 7 at the bottom. As an example, as shown in the drawing of this embodiment, the housing 2 is a hollow cylinder, the bottom opening is an air inlet 4, the top opening is an air outlet 5, the flow guiding device 2 is disposed on one side of the air outlet 5 and is located at the center of the cylindrical housing 2 and coaxial therewith, the electromagnetic coil group 1 is circumferentially disposed around the flow guiding device 3 outside the housing 2, the material collecting groove 6 is annularly disposed between the bottom of the housing 2 and the air inlet 4, and the bottom of the material collecting groove 6 is provided with a slag discharge opening 7.
Referring to fig. 2, solenoid group 1 includes the solenoid that encircles the intermittent type circular telegram that 3 circumference of guiding device were arranged in the casing 2 outside, in addition, can also establish ties end to end of a plurality of magnetic separation unit, the air intake 4 of each grade of magnetic separation unit and the air outlet 5 intercommunication of last one-level magnetic separation unit, and the solenoid of adjacent two-stage magnetic separation unit turns on the electricity in turn, form a set ofly through this mode magnetic separation unit, the solenoid through each magnetic separation unit of electrical system control turns on the electricity in turn, can realize taking material gas channel deironing at full time.
Referring to fig. 2, the guiding device 3 is provided to make the iron slag at each point in the channel be forced to directly point to the inner wall of the housing 2, so that the iron removing efficiency is high, preferably, the guiding device 3 has a guiding portion 8, a connecting portion 9 and a connecting bracket 10, the guiding portion 8 is smaller than the end of the air inlet 4 and larger than the end of the air outlet 5, and has an external cross-sectional shape matching the cross-sectional shape of the inner wall of the housing 2, the connecting portion 9 is fixedly connected to the housing 2 through the connecting bracket 10, and the connecting portion 9 has an external shape similar to the guiding portion 8, but larger than the end of the air inlet 4 and smaller than the end of the air. The inner section of the magnetic separator shell 2 and the outer section of the flow guide device 3 are flexible and changeable in shape and strong in adaptability, for example, as shown in the embodiment, the part of the shell 2 corresponding to the flow guide device 3 is a cylinder, the flow guide part 8 and the connecting part 9 are both cones, and the flow guide device 3 is located at the center of the cylindrical shell 2 and is coaxial with the cylindrical shell.
When the magnetic separator of the patent is used, referring to fig. 3 as an example, 1 air-conveying dry magnetic separator 13 implemented according to the invention is arranged between an air outlet of a vertical mill 11 and an air inlet of a dust collector 12, and the air-conveying dry magnetic separator 13 is vertically arranged in the axial direction. During operation, the air brought from the air outlet of the vertical mill 11 enters from the air inlet 4 of the air-assisted dry magnetic separator 13, when the air brought enters the area of the flow guide device 3, the airflow is dispersed outwards, meanwhile, under the magnetic action of the electromagnetic coil group 1, iron-containing particles are adsorbed to the inner surface of the shell 2 under the magnetic action, and the air brought continuously rises and is exhausted from the air outlet 5 of the air-assisted dry magnetic separator 13. The electromagnetic coil group 1 loses power at regular time and iron-containing particles adsorbed on the shell 2 slide down along the wall, enter the material collecting groove 6 and are discharged from the slag discharge port 7.
Example 2:
the present embodiment is substantially the same as embodiment 1, except that the part of the housing 2 corresponding to the flow guiding device 3 is a regular polygon prism (the whole housing 2 may also be a regular polygon prism), the flow guiding part 8 and the connecting part 9 are both regular polygon pyramids, and the flow guiding device 3 is located at the center of the housing 2 of the regular polygon prism and is coaxial with the same.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides an air-assisted dry-type magnetic separator which characterized in that: the magnetic separation unit comprises an electromagnetic coil group, a shell and a flow guide device, wherein the lower part of the shell is provided with an air inlet, the upper part of the shell is provided with an air outlet, the center of an air flow channel between the air inlet and the air outlet in the shell is provided with the flow guide device of a non-magnetic body, the outer side of the shell is provided with the electromagnetic coil group, and the lower part of the inner side of the shell below the electromagnetic coil group is; the flow guiding device is provided with a flow guiding part, one end of the flow guiding part, which is opposite to the air inlet, is small, the other end of the flow guiding part, which is opposite to the air outlet, is large, and the flow guiding part is provided with an external section shape matched with the section shape of the inner wall of the shell; the flow guiding device is also provided with a connecting part and a connecting support, the connecting part is connected and fixed with the shell through the connecting support, the connecting part has an external shape similar to that of the flow guiding part, but one end of the connecting part is large relative to the air inlet and one end of the connecting part is small relative to the air outlet.
2. The air-fed dry magnetic separator as recited in claim 1 wherein: the part of the shell corresponding to the flow guide device is a cylinder, the flow guide part and the connecting part are cones, and the flow guide device is positioned in the center of the shell of the cylinder and is coaxial with the shell.
3. The air-fed dry magnetic separator as recited in claim 1 wherein: the part of the shell corresponding to the flow guide device is a regular polygonal prism, the flow guide part and the connecting part are regular polygonal pyramids, and the flow guide device is positioned at the center of the shell of the regular polygonal prism and is coaxial with the shell.
4. The air-fed dry magnetic separator as recited in claim 1 wherein: the electromagnetic coil group comprises intermittently electrified electromagnetic coils which are circumferentially arranged around the flow guide device on the outer side of the shell.
5. The air-fed dry magnetic separator as recited in claim 4 wherein: the magnetic separation units are connected in series end to end, the air inlets of the magnetic separation units at all levels are communicated with the air outlet of the magnetic separation unit at the previous level, and the electromagnetic coils of the adjacent two magnetic separation units are alternately electrified.
6. The air-fed dry magnetic separator as recited in claim 1 wherein: the material collecting groove is annularly arranged between the lower part of the shell and the air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711340672.7A CN108057508B (en) | 2017-12-14 | 2017-12-14 | Air-assisted dry magnetic separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711340672.7A CN108057508B (en) | 2017-12-14 | 2017-12-14 | Air-assisted dry magnetic separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108057508A CN108057508A (en) | 2018-05-22 |
| CN108057508B true CN108057508B (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711340672.7A Active CN108057508B (en) | 2017-12-14 | 2017-12-14 | Air-assisted dry magnetic separator |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118204197B (en) * | 2024-05-20 | 2024-09-13 | 赣州金环磁选科技装备股份有限公司 | Air-assisted dry magnetic separator for silica sand purification |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6058244U (en) * | 1983-09-29 | 1985-04-23 | 宇部興産株式会社 | A vertical roller mill equipped with a device to remove iron particles from the material to be crushed. |
| JPH06210193A (en) * | 1993-01-20 | 1994-08-02 | Sumitomo Metal Ind Ltd | Method and device for recovering grain iron for pulverization of blast furnace water granulated slag |
| DE10022536A1 (en) * | 2000-05-09 | 2001-11-29 | Loesche Gmbh | Mill classifier |
| CN202638581U (en) * | 2012-06-19 | 2013-01-02 | 成都利君科技有限责任公司 | Horizontal eddy dry-type magnetic separator |
| CN202638574U (en) * | 2012-06-20 | 2013-01-02 | 成都利君科技有限责任公司 | Micro powder and fine powder dry type magnetic separator |
| CN104841554B (en) * | 2015-06-04 | 2017-03-01 | 山东省建筑材料工业设计研究院 | A kind of special RO phase magnetic separator of slag micro powder |
| CN205341034U (en) * | 2016-01-20 | 2016-06-29 | 宁德时代新能源科技股份有限公司 | Permanent magnetism pipeline de -ironing separator |
| CN205518186U (en) * | 2016-04-16 | 2016-08-31 | 台州市绿野饲料有限公司 | Permanent magnet drum |
| CN106391301B (en) * | 2016-11-08 | 2018-07-03 | 中钢集团马鞍山矿山研究院有限公司 | A kind of dry type deironing apparatus of hollow glass micropearl |
| DE202017101879U1 (en) * | 2017-03-13 | 2017-04-21 | Tiemo Sehon | Magnetic separator for separating ferromagnetic particles from a suction air stream |
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2017
- 2017-12-14 CN CN201711340672.7A patent/CN108057508B/en active Active
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