CN109530083B - Fine continuous dry magnetic separation device and use method - Google Patents
Fine continuous dry magnetic separation device and use method Download PDFInfo
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- CN109530083B CN109530083B CN201811432023.4A CN201811432023A CN109530083B CN 109530083 B CN109530083 B CN 109530083B CN 201811432023 A CN201811432023 A CN 201811432023A CN 109530083 B CN109530083 B CN 109530083B
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- 238000007885 magnetic separation Methods 0.000 title claims abstract description 151
- 238000000034 method Methods 0.000 title claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 32
- 239000011707 mineral Substances 0.000 claims abstract description 32
- 239000000843 powder Substances 0.000 claims abstract description 22
- 229910052742 iron Inorganic materials 0.000 claims abstract description 21
- 239000010419 fine particle Substances 0.000 claims abstract description 16
- 238000000926 separation method Methods 0.000 claims abstract description 14
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000006249 magnetic particle Substances 0.000 abstract description 4
- 238000010924 continuous production Methods 0.000 abstract description 3
- 239000006148 magnetic separator Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000000737 periodic effect Effects 0.000 abstract description 2
- 239000010456 wollastonite Substances 0.000 description 7
- 229910052882 wollastonite Inorganic materials 0.000 description 7
- 239000000428 dust Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009837 dry grinding Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B03C1/30—Combinations with other devices, not otherwise provided for
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- Cyclones (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a continuous dry magnetic separation device for fine particles, which comprises a mineral feeding port, a mineral feeding negative pressure air pipe, a magnetic product negative pressure air pipe, a non-magnetic product negative pressure air pipe, more than 2 dispersing devices, more than 2 magnetic separation units, a non-magnetic product collecting device, a negative pressure air extracting device I, a negative pressure air extracting device II and a frame; the device solves the problems that the dispersibility of ore particles is poor, the inclusion is serious, the periodic magnetic separator cannot continuously operate, the separation efficiency is low and the like in the fine particle dry magnetic separation process, the device disperses through negative pressure wind power feeding, the magnetic particles of fine particles are efficiently trapped and deironized by adopting a closed magnetic system and a magnetic medium matched with the particles, and the multi-magnetic separation unit continuously works by controlling alternate feeding and discharging, and the product is collected in a bag type or rotational flow mode, so that continuous, efficient and environment-friendly deironing of the fine particles is realized; the method has the characteristics of good separation effect, high iron removal rate, less inclusion, low dry powder loss rate, suitability for continuous production, large treatment capacity, environmental protection, simple structure, flexibility, multiple purposes, easy operation and the like.
Description
Technical Field
The invention relates to a continuous dry magnetic separation device for fine particles and a use method thereof, which are applied to the engineering fields of mineral processing, environment, chemical industry, materials and the like, and belong to the technical field of solid material separation.
Background
In the industries of electronics, chemical industry, ceramics, paper making and the like, a large amount of ultrafine powder is required, and the powder is required to be fine in granularity and low in iron content. On the one hand, however, not only are many raw materials often iron-containing exceeding standard; on the other hand, in the process of processing and production, friction and impact between materials and steel metal equipment can cause abrasion scrap iron of the equipment to enter powder through the processes of crushing, dry grinding and the like; the presence of such iron can affect the quality of the product. Therefore, how to remove the magnetic substances is an important issue for the powder industry.
In the process of preparing nonmetallic mineral powder, crushing and dry grinding processes are often adopted in order to simplify the process, reduce the cost, reduce the pollution and improve the characteristics and the activity of the nonmetallic mineral powder, so dry magnetic separation is often adopted for removing iron. The dry magnetic separation method is a magnetic separation method with non-water separation medium, and is widely applied to industries such as cement, glass, ceramics, cement grinding stations, refractory materials, grains, feeds, chemical industry, nonmetallic ore dressing, metallic ore dressing and the like. The existing dry magnetic separator has the following defects:
1. the fine-grained minerals have strong adhesiveness, the mineral grains are easy to agglomerate, the dry magnetic separation dispersibility is poor, and the inclusions are serious;
2. the magnetic property of the micro-fine iron-containing particles is weak, and the conventional magnetic separation and removal rate is low;
3. the periodic magnetic separator is generally adopted for iron removal in the dry powder making industry, so that the treatment capacity is low, the continuous production is not suitable, and the separation efficiency is low;
4. the dry magnetic separation process has more dust and great environmental pollution.
Disclosure of Invention
The invention provides a fine particle continuous dry magnetic separation device which comprises a mineral feeding port, a mineral feeding negative pressure air pipe, a magnetic product negative pressure air pipe, a non-magnetic product negative pressure air pipe, more than 2 dispersing devices, more than 2 magnetic separation units, a non-magnetic product collecting device, a negative pressure air extracting device I, a negative pressure air extracting device II and a frame, wherein the magnetic product negative pressure air pipe is arranged on the frame; the ore feeding port is arranged at one end of an ore feeding negative pressure air pipe, the other end of the ore feeding negative pressure air pipe is respectively communicated with the bottoms of more than 2 magnetic separation units, ore feeding valves are arranged at the joints of the bottoms of the more than 2 magnetic separation units, the bottoms of the more than 2 magnetic separation units are communicated with a magnetic product collecting device through a magnetic product negative pressure air pipe, a valve I is arranged at the joint of the magnetic separation units and the magnetic product negative pressure air pipe, and the magnetic product collecting device is connected with a negative pressure air extracting device II; the tops of more than 2 magnetic separation units are communicated with a non-magnetic product collecting device through a non-magnetic product negative pressure air pipe, and a valve II is arranged at the joint of the magnetic separation units and the non-magnetic product negative pressure air pipe; negative pressure air extraction device I communicates with non-magnetic product collection device, and magnetic separation unit upper portion is provided with the air intake, and the magnetic separation unit sets up in the frame, and dispersion devices set up in giving ore deposit negative pressure tuber pipe and lie in entering magnetic separation unit front end.
The magnetic separation unit comprises a shell, an electromagnetic coil and a magnetic medium body, wherein the magnetic medium body is arranged in the shell, the electromagnetic coil is wound outside the shell, a feed inlet and a discharge outlet I are formed in the bottom of the shell, a discharge outlet II is formed in the top of the shell, the feed inlet is communicated with a mineral feeding negative pressure air pipe, the discharge outlet I is communicated with a magnetic product negative pressure air pipe, the discharge outlet II is communicated with a non-magnetic product negative pressure air pipe, and the electromagnetic coil is connected with a power supply.
The magnetic medium body is a layered structure formed by longitudinally and alternately arranging a plurality of steel plate meshes or a plurality of rod medium layers, wherein the rod medium layers are formed by transversely arranging a plurality of rod mediums, the diameter of each rod medium is 0.5-10 mm, and the aperture of a hole on a steel plate mesh is 10-0.01 mm; the rod medium is an iron rod or a steel rod.
The dispersing device consists of 1-55 net plates with the mesh aperture of 3-0.02 mm.
The air inlet is an air inlet with reverse air suction.
The non-magnetic product collecting device and the magnetic product collecting device are bag type dust collectors or cyclone dust collectors.
The invention further aims to provide a using method of the device, which comprises the steps of feeding ores by negative pressure wind, dispersing by a dispersing device, efficiently capturing fine magnetic particles for iron removal by adopting a closed magnetic system and filling magnetic media matched with the particles, alternately feeding ores and discharging ores by a plurality of magnetic separation units for continuous operation, discharging ores by reverse air suction, collecting products by a bag type or rotational flow mode, and realizing continuous, efficient and environment-friendly iron removal of the fine particles.
The specific operation is as follows: when the sorting work starts, firstly starting a non-magnetic product collecting device, a negative pressure air extracting device I and a negative pressure air extracting device II, wherein ore feeding valves and valves II of more than 2 magnetic separation units are opened, valves I and air inlets of more than 2 magnetic separation units are closed, electromagnetic coils are electrified, mineral powder is fed from an ore feeding port under the action of negative pressure generated by the negative pressure air extracting device I, enters an ore feeding negative pressure air pipe, enters more than 2 magnetic separation units for sorting work through a dispersing device, enters the magnetic separation units after being fully dispersed under the action of the dispersing device, magnetic substances are adsorbed on a magnetic medium body under the action of a magnetic field generated by the electromagnetic coils, and non-magnetic minerals enter the non-magnetic product collecting device through the non-magnetic product negative pressure air pipe under the action of the negative pressure;
after the magnetic separation units are separated for 1-99 min, closing a half of ore feeding valves and valves II of the magnetic separation units, opening a valve I and an air inlet of the magnetic separation units, powering off electromagnetic coils of the magnetic separation units, and allowing magnetic substances adsorbed on magnetic media of the magnetic separation units to enter a magnetic product collecting device through a magnetic product negative pressure air pipe under the action of a negative pressure air extracting device II; the other half of the magnetic separation units still carry out separation operation;
after ore is discharged for 1-99 min by half of the magnetic separation units, opening ore valves and valves II of the magnetic separation units, closing valves I and air inlets of the magnetic separation units, electrifying electromagnetic coils of the magnetic separation units, and performing separation operation again by the magnetic separation units; simultaneously, the ore feeding valve and the valve II of the other half of the magnetic separation units are closed, the valve I and the air inlet of the magnetic separation units are opened, the electromagnetic coil of the magnetic separation units is powered off, and the other part of the magnetic separation units begin to perform ore discharging operation, so that the alternate operation is realized, and the continuous dry type iron removal operation is realized.
The electromagnetic coil generates a magnetic field of 100-16000 GS under the action of current.
The wind speed in the ore feeding negative pressure air pipe is 0.1-100 m/s, and the belt material concentration of the air is 0.1-500 kg/m 3 。
The invention has the advantages and technical effects that: adopting negative pressure wind power ore feeding and adding a dispersing device in an ore feeding negative pressure air pipe to solve the problems that fine particles are easy to agglomerate and poor in dispersibility; the closed magnetic system is adopted, magnetic media matched with the particles are filled, the magnetic field strength is high, the adjustable current excitation is realized, the fine-grained magnetic particles are efficiently trapped, and the iron removal rate is high; the continuous operation is realized by adopting a plurality of magnetic separation units and controlling each unit to alternately feed and discharge ores; the air inlet is adopted to reversely exhaust air to discharge the ore, so that the magnetic particles adsorbed on the medium are easy to discharge; the product is collected by adopting a bag type or rotational flow mode, the work is stable, dust is not easy to escape, and the environment is friendly. The fine-grain continuous dry magnetic separation method has the characteristics of good separation effect, high iron removal rate, less inclusion, low dry powder loss rate, suitability for continuous production, large treatment capacity, environmental protection and the like; the method has the advantages of flexibility, multiple purposes, easiness in operation, large treatment capacity, high sorting efficiency, stable and reliable product quality and the like, and has obvious economic benefit.
Drawings
FIG. 1 is a schematic diagram of the structure of the device of the present invention;
FIG. 2 is a schematic top view of the apparatus of the present invention;
FIG. 3 is a schematic diagram of the left-hand structure of the device of the present invention;
in the figure: 1: a mineral feed port; 2-1: a negative pressure air pipe for ore feeding; 2-2: negative pressure air pipe of magnetic product; 2-3: negative pressure air pipe of non-magnetic product; 3: a dispersing device; 4: a feeding valve; 5: a valve II; 6: a valve I; 7: an electromagnetic coil; 8: a magnetic medium; 9: a housing; 10-1: a non-magnetic product collection device; 10-2: a magnetic product collection device; 11-1: a negative pressure air extracting device I; 11-2 negative pressure air extractor II; 12: an air inlet; 13: a frame; 14: a magnetic separation unit; 15: a feed inlet; 16: a discharge port I; 17-a discharge port II.
Detailed Description
The method of the present invention is further illustrated by the following examples, but the scope of the invention is not limited to the description.
Example 1: as shown in fig. 1-3, the fine particle continuous dry magnetic separation device comprises a mineral feeding port 1, a mineral feeding negative pressure air pipe 2-1, a magnetic product negative pressure air pipe 2-2, a non-magnetic product negative pressure air pipe 2-3, 2 dispersing devices 3, 2 magnetic separation units 14, a non-magnetic product collecting device 10-1, a magnetic product collecting device 10-2, a negative pressure air extracting device I11-1, a negative pressure air extracting device II 11-2 and a frame 13; the ore feeding port 1 is arranged at one end of an ore feeding negative pressure air pipe 2-1, the other end of the ore feeding negative pressure air pipe 2-1 is respectively communicated with the bottoms of the 2 magnetic separation units, ore feeding valves 4 are respectively arranged at the joints of the ore feeding negative pressure air pipe 2-1, the bottoms of the 2 magnetic separation units are communicated with a magnetic product collecting device 10-2 through a magnetic product negative pressure air pipe 2-2, a valve I6 is arranged at the joint of the magnetic separation units and the magnetic product negative pressure air pipe 2-2, and the magnetic product collecting device 10-2 is connected with a negative pressure air extractor II 11-2; the tops of the 2 magnetic separation units are communicated with the non-magnetic product collecting device 10-1 through a non-magnetic product negative pressure air pipe 2-3, and a valve II 5 is arranged at the joint of the magnetic separation units and the non-magnetic product negative pressure air pipe; the negative pressure air extractor I11-1 is communicated with the non-magnetic product collecting device 10-1, the upper part of the magnetic separation unit is provided with an air inlet 12, the magnetic separation unit is arranged on the frame 13, the dispersing device 3 is arranged in the ore feeding negative pressure air pipe 2-1 and positioned at the front end of the magnetic separation unit, the magnetic separation unit 14 comprises a shell 9, an electromagnetic coil 7 and a magnetic medium body 8, the magnetic medium body 8 is arranged in the shell, the electromagnetic coil is wound outside the shell, the bottom of the shell is provided with a feed inlet 15 and a discharge outlet I16, the top of the shell is provided with a discharge outlet II 17, the feed inlet is communicated with the ore feeding negative pressure air pipe 2-1, the discharge outlet I is communicated with the magnetic product negative pressure air pipe 2-2, the discharge outlet II is communicated with the non-magnetic product negative pressure air pipe 2-3, and the electromagnetic coil 7 is connected with a power supply; the magnetic medium body 8 is a layered structure formed by longitudinally and alternately arranging 20 steel plate meshes, and the aperture of each steel plate mesh is 10mm; the dispersing device 3 consists of 6 net plates with the mesh aperture of 2 mm; the air inlet 12 is an air inlet with reverse air suction, and the non-magnetic product collecting device and the magnetic product collecting device are bag type dust collectors.
The device is adopted to continuously remove iron and purify wollastonite (powder with fineness of-400 meshes accounting for 90 percent) in certain place of Yunnan, which contains 80ppm of magnetic impurities, and the method is as follows:
when the sorting work starts, firstly starting the non-magnetic product collecting device 10-1, the magnetic product collecting device 10-2, the negative pressure air extracting device I11-1 and the negative pressure air extracting device II 11-2; the ore feeding valve 4 and the valve II 5 of the 2 magnetic separation units are opened, the valve I6 and the air inlet 12 of the 2 magnetic separation units are closed, the electromagnetic coil 7 is electrified to feed ore powder from the ore feeding port 1, the ore powder enters the ore feeding negative pressure air pipe 2-1 under the action of the negative pressure air speed 10m/s generated by the negative pressure air extraction device I11-1, and the belt concentration of the air is 3kg/m 3 The ore powder enters 2 magnetic separation units through a dispersing device 3 to carry out separation work, the ore powder enters the magnetic separation units after being fully dispersed under the action of the dispersing device, a magnetic medium body is magnetized by 11000GS magnetic field generated by an electromagnetic coil 7, 22000GS induction magnetic field intensity is generated between steel plate meshes of the magnetic medium body, and magnetic substances are generated under the action of the magnetic field intensityThe non-magnetic minerals are adsorbed on the steel plate net of the magnetic medium body 8 and enter the non-magnetic product collecting device 10-1 through the non-magnetic product negative pressure air pipe 2-3 under the action of negative pressure;
after the magnetic separation units are separated for 10min, closing a mineral feeding valve 4 and a valve II 5 of the first magnetic separation unit, opening a valve I6 and an air inlet 12 of the first magnetic separation unit, switching off an electromagnetic coil 7 of the magnetic separation unit, and enabling magnetic substances adsorbed on a magnetic medium body 8 of the first magnetic separation unit to enter a magnetic product collecting device 10-2 through a magnetic product negative pressure air pipe 2-2 under the action of a negative pressure air extractor II 11-2; the second magnetic separation unit still performs separation operation;
after the ore is discharged from the first magnetic separation unit for 10min, opening an ore valve 4 and a valve II 5 of the first magnetic separation unit, closing a valve I6 and an air inlet 12 of the magnetic separation unit, electrifying an electromagnetic coil 7 of the magnetic separation unit, separating again by the first magnetic separation unit, adsorbing magnetic substances on a steel plate net of a magnetic medium body 8 under the action of a magnetic field generated by the electromagnetic coil 7, and allowing non-magnetic minerals to enter a non-magnetic product collecting device 10-1 through a non-magnetic product negative pressure air pipe 2-3 under the action of negative pressure; simultaneously closing a mineral feeding valve and a valve II of the second magnetic separation unit, opening a valve I and an air inlet of the second magnetic separation unit, switching off an electromagnetic coil of the magnetic separation unit, starting mineral discharging operation by the second magnetic separation unit, and allowing magnetic substances adsorbed on a magnetic medium body of the second magnetic separation unit to enter a magnetic product collecting device 10-2 through a magnetic product negative pressure air pipe 2-2 under the action of a negative pressure air extractor II 11-2; the 2 magnetic separation units work alternately to realize continuous dry iron removal, and finally, the wollastonite non-magnetic product with the magnetic impurity Fe content of 10ppm and the wollastonite recovery rate of 95% is obtained.
Example 2: the device structure of the embodiment is the same as that of the embodiment 1, and is different in that the device structure comprises 4 magnetic separation units 14 and 4 dispersing devices 3, the magnetic medium body 8 is a layered structure formed by longitudinally and alternately arranging 35 rod medium layers, the rod medium layers are formed by transversely and uniformly arranging 15 rod mediums, and the diameter of the rod mediums is 5mm; the dispersing device 3 is composed of 10 mesh plates with the mesh aperture of 0.5mm, and the non-magnetic product collecting device and the magnetic product collecting device are cyclone dust collectors.
The device is adopted to continuously remove iron and purify wollastonite (powder with fineness of-500 meshes accounting for 80 percent) in certain place of Hunan, wherein the wollastonite contains 300ppm of iron, and the method comprises the following steps of:
when the sorting work starts, firstly starting a non-magnetic product collecting device 10-1, a magnetic product collecting device 10-2, a negative pressure air extracting device I11-1 and a negative pressure air extracting device II 11-2; the ore feeding valve 4 and the valve II 5 of the 4 magnetic separation units are opened, the valve I6 and the air inlet 12 of the 4 magnetic separation units are closed, the electromagnetic coil 7 is electrified to feed ore powder from the ore feeding port 1, the ore powder enters the ore feeding negative pressure air pipe 2-1 under the action of the negative pressure air speed 20m/s generated by the negative pressure air extraction device I11-1, and the belt concentration of the air is 5kg/m 3 The mineral powder enters 4 magnetic separation units to carry out separation work through a dispersing device 3, the mineral powder is fully dispersed under the action of the dispersing device and then enters the magnetic separation units, a magnetic medium body is magnetized by a 15000GS magnetic field generated by an electromagnetic coil 7, 30000GS induction magnetic field intensity is generated between steel plate meshes of the magnetic medium body, under the action, magnetic substances are adsorbed on the steel plate meshes of the magnetic medium body 8, and non-magnetic minerals enter a non-magnetic product collecting device 10-1 through a non-magnetic product negative pressure air pipe 2-3 under the action of negative pressure;
after the magnetic separation units are separated for 20min, the ore feeding valves 4 and the valves II 5 of the first magnetic separation unit and the third magnetic separation unit are closed, the valves I6 and the air inlets 12 of the first magnetic separation unit and the third magnetic separation unit are opened, the electromagnetic coil 7 of the magnetic separation unit is powered off, and magnetic substances adsorbed on the magnetic medium bodies 8 of the first magnetic separation unit and the third magnetic separation unit enter the magnetic product collecting device 10-2 through the magnetic product negative pressure air pipe 2-2 under the action of the negative pressure air extracting device II 11-2; the second magnetic separation unit and the fourth magnetic separation unit still perform separation operation;
after the ore is discharged for 20min by the first magnetic separation unit and the third magnetic separation unit, opening an ore valve 4 and a valve II 5 of the first magnetic separation unit and the third magnetic separation unit, closing a valve I6 and an air inlet 12 of the magnetic separation unit, electrifying an electromagnetic coil 7 of the magnetic separation unit, separating magnetic substances again by the first magnetic separation unit and the third magnetic separation unit, adsorbing the magnetic substances on a steel plate net of a magnetic medium body 8 under the action of a magnetic field generated by the electromagnetic coil 7, and allowing nonmagnetic minerals to enter a nonmagnetic product collecting device 10-1 through a nonmagnetic product negative pressure air pipe 2-3 under the action of negative pressure; simultaneously closing a mineral feeding valve and a valve II of the second magnetic separation unit and the fourth magnetic separation unit, opening a valve I and an air inlet of the second magnetic separation unit and the fourth magnetic separation unit, switching off electromagnetic coils of the magnetic separation units, starting mineral discharging operation by the second magnetic separation unit and the fourth magnetic separation unit, and allowing magnetic substances adsorbed on magnetic media of the second magnetic separation unit and the fourth magnetic separation unit to enter a magnetic product collecting device 10-2 through a magnetic product negative pressure air pipe 2-2 under the action of a negative pressure air extractor II 11-2; the 4 magnetic separation units work alternately to realize continuous dry iron removal, and finally, the wollastonite non-magnetic product with the magnetic impurity Fe content of 15ppm and the wollastonite recovery rate of 96% is obtained.
Claims (6)
1. The application method of the fine particle continuous dry magnetic separation device is characterized by comprising the following steps of: the fine particle continuous dry magnetic separation device comprises a mineral feeding port (1), a mineral feeding negative pressure air pipe (2-1), a magnetic product negative pressure air pipe (2-2), a non-magnetic product negative pressure air pipe (2-3), more than 2 dispersing devices (3), more than 2 magnetic separation units (14), a non-magnetic product collecting device (10-1), a magnetic product collecting device (10-2), a negative pressure air extracting device I (11-1), a negative pressure air extracting device II (11-2) and a frame (13); the ore feeding port (1) is arranged at one end of an ore feeding negative pressure air pipe (2-1), the other end of the ore feeding negative pressure air pipe (2-1) is respectively communicated with the bottoms of more than 2 magnetic separation units, ore feeding valves (4) are respectively arranged at the joints of the bottoms of the more than 2 magnetic separation units, the bottoms of the more than 2 magnetic separation units are communicated with the magnetic product collecting device (10-2) through the magnetic product negative pressure air pipe (2-2), a valve I (6) is arranged at the joint of the magnetic separation units and the magnetic product negative pressure air pipe (2-2), and the magnetic product collecting device (10-2) is connected with the negative pressure air extracting device II (11-2); the tops of more than 2 magnetic separation units are communicated with a non-magnetic product collecting device (10-1) through a non-magnetic product negative pressure air pipe (2-3), and a valve II (5) is arranged at the joint of the magnetic separation units and the non-magnetic product negative pressure air pipe; the negative pressure air extractor I (11-1) is communicated with the non-magnetic product collecting device (10-1), an air inlet (12) is formed in the upper part of the magnetic separation unit, the magnetic separation unit is arranged on the frame (13), the dispersing device (3) is arranged in the ore feeding negative pressure air pipe (2-1) and positioned at the front end of the entering magnetic separation unit, and more than 2 magnetic separation units are respectively connected with a power supply; the magnetic separation unit (14) comprises a shell (9), an electromagnetic coil (7) and a magnetic medium body (8), wherein the magnetic medium body (8) is arranged in the shell, the electromagnetic coil is wound outside the shell, a feed port and a discharge port I are formed in the bottom of the shell, a discharge port II is formed in the top of the shell, the feed port is communicated with a mineral feeding negative pressure air pipe (2-1), the discharge port I is communicated with a magnetic product negative pressure air pipe (2-2), the discharge port II is communicated with a non-magnetic product negative pressure air pipe (2-3), and the electromagnetic coil (7) is connected with a power supply; the magnetic medium body (8) is a layered structure formed by longitudinally and alternately arranging a plurality of steel plate meshes or a plurality of rod medium layers, wherein the rod medium layers are formed by transversely arranging a plurality of rod mediums, the diameter of each rod medium is 0.5-10 mm, and the aperture of a hole on the steel plate mesh is 10-0.01 mm;
when the sorting work starts, firstly, a non-magnetic product collecting device (10-1), a magnetic product collecting device (10-2), a negative pressure air extracting device I (11-1) and a negative pressure air extracting device II (11-2), wherein ore feeding valves (4) and valves II (5) of more than 2 magnetic separation units are opened, valves I (6) and air inlets (12) of more than 2 magnetic separation units are closed, electromagnetic coils (7) are electrified, mineral powder is fed from an ore feeding port (1) under the action of negative pressure generated by the negative pressure air extracting device I (11-1), enters an ore feeding negative pressure air pipe (2-1) and enters more than 2 magnetic separation units through a dispersing device (3) for sorting work, the mineral powder is fully dispersed under the action of the dispersing device and then enters the magnetic separation units, magnetic substances are adsorbed on a magnetic medium body (8) under the action of magnetic field generated by the electromagnetic coils (7), and the non-magnetic mineral enters the non-magnetic product collecting device (10-1) through the negative pressure air pipe (2-3) under the action of the negative pressure;
after the magnetic separation units are separated for 1-99 min, closing a half of ore feeding valves (4) and valves II (5) of the magnetic separation units, opening a valve I (6) and an air inlet (12) of the magnetic separation units, switching off an electromagnetic coil (7) of the magnetic separation units, and allowing magnetic substances adsorbed on a magnetic medium body of the magnetic separation units to enter a magnetic product collecting device (10-2) through a magnetic product negative pressure air pipe (2-2) under the action of a negative pressure air extracting device II (11-2); the other half of the magnetic separation units still carry out separation operation;
after ore discharge of half of the magnetic separation units is carried out for 1-99 min, ore valves (4) and valves II (5) of the magnetic separation units are opened, a valve I (6) and an air inlet (12) of the magnetic separation units are closed, an electromagnetic coil (7) of the magnetic separation units is electrified, and the magnetic separation units perform separation operation again; simultaneously, the ore feeding valve and the valve II of the other half of the magnetic separation units are closed, the valve I and the air inlet of the magnetic separation units are opened, the electromagnetic coil of the magnetic separation units is powered off, and the other part of the magnetic separation units begin to perform ore discharging operation, so that the alternate operation is realized, and the continuous dry type iron removal operation is realized.
2. The method of using a continuous dry magnetic separation apparatus for fine particles according to claim 1, characterized in that: the rod medium is an iron rod or a steel rod.
3. The method of using a continuous dry magnetic separation apparatus for fine particles according to claim 1, characterized in that: the dispersing device (3) is composed of 1-55 net plates with the mesh aperture of 3-0.02 mm.
4. The method of using a continuous dry magnetic separation apparatus for fine particles according to claim 1, characterized in that: the air inlet (12) is an air inlet with reverse air suction.
5. The method of using a continuous dry magnetic separation apparatus for fine particles according to claim 1, characterized in that: the electromagnetic coil (7) generates a magnetic field of 100-16000 GS under the action of current.
6. The method of using a continuous dry magnetic separation apparatus for fine particles according to claim 1, characterized in that: the wind speed in the ore feeding negative pressure air pipe is 0.1-100 m/s, and the belt material concentration of the air is 0.1-500 kg/m 3 。
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| CN109939819A (en) * | 2019-03-29 | 2019-06-28 | 佛山市霍普除铁设备制造有限公司 | Superfine powder iron removal system |
| CN110422495A (en) * | 2019-09-05 | 2019-11-08 | 天津闪速炼铁技术有限公司 | A kind of industrial furnace magnetic feeding device and charging process |
| CN111482275B (en) * | 2020-04-15 | 2021-05-07 | 王小平 | Negative pressure-based ultramicro black fungus powder purification system |
| CN117548227A (en) * | 2024-01-11 | 2024-02-13 | 山东华特磁电科技股份有限公司 | Iron remover for removing impurities from dry powder materials and multi-stage impurity removal control system |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2193206Y (en) * | 1994-04-29 | 1995-03-29 | 肖光甫 | Periodical ladder-like permanent magnetic separator |
| US6045618A (en) * | 1995-09-25 | 2000-04-04 | Applied Materials, Inc. | Microwave apparatus for in-situ vacuum line cleaning for substrate processing equipment |
| CN101695682A (en) * | 2009-10-30 | 2010-04-21 | 蚌埠中凯电子材料有限公司 | Dry-type superfine powder magnetic separator |
| CN101862702A (en) * | 2010-06-21 | 2010-10-20 | 昆明理工大学 | Centrifugal high-gradient magnetic method |
| CN102351654A (en) * | 2011-06-15 | 2012-02-15 | 中北大学 | Magnetic separation catalytic oxidation method and magnetic separation reaction apparatus |
| CN102728461A (en) * | 2012-06-20 | 2012-10-17 | 成都利君科技有限责任公司 | Micro powder fine powder dry-type magnet separator |
| CN102941156A (en) * | 2012-11-20 | 2013-02-27 | 北方重工集团有限公司 | Wind power feeding dry type permanent magnetic separator |
| CN103056028A (en) * | 2013-01-23 | 2013-04-24 | 沈阳华大科技有限公司 | Magnetic ore separation equipment and method |
| CN103191830A (en) * | 2013-04-11 | 2013-07-10 | 成都利君实业股份有限公司 | Fluidized magnetic medium dry magnetic separator and magnetic separation method thereof |
| CN203862383U (en) * | 2014-05-29 | 2014-10-08 | 中国地质科学院郑州矿产综合利用研究所 | Dry-type magnetic agglomeration separator |
| CN105381629A (en) * | 2015-12-10 | 2016-03-09 | 冯文静 | Natural product active component pressurized reverse cycle extraction apparatus and method |
| CN105750204A (en) * | 2016-04-07 | 2016-07-13 | 重庆华珞粉煤灰开发有限责任公司 | Superfine ash production apparatus and production method |
| CN107234001A (en) * | 2017-08-09 | 2017-10-10 | 佛山市高明星诺机械设备有限公司 | A kind of powder electromagnetic separator |
| CN209438815U (en) * | 2018-11-28 | 2019-09-27 | 昆明理工大学 | A kind of particulate continuous dry-type concentration equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2952552B1 (en) * | 2009-11-19 | 2012-01-13 | Commissariat Energie Atomique | DEVICE FOR RECOVERING NANOPOUDERS AND ULTRAFINE POWDERS CONTAINED IN A GAS |
-
2018
- 2018-11-28 CN CN201811432023.4A patent/CN109530083B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2193206Y (en) * | 1994-04-29 | 1995-03-29 | 肖光甫 | Periodical ladder-like permanent magnetic separator |
| US6045618A (en) * | 1995-09-25 | 2000-04-04 | Applied Materials, Inc. | Microwave apparatus for in-situ vacuum line cleaning for substrate processing equipment |
| CN101695682A (en) * | 2009-10-30 | 2010-04-21 | 蚌埠中凯电子材料有限公司 | Dry-type superfine powder magnetic separator |
| CN101862702A (en) * | 2010-06-21 | 2010-10-20 | 昆明理工大学 | Centrifugal high-gradient magnetic method |
| CN102351654A (en) * | 2011-06-15 | 2012-02-15 | 中北大学 | Magnetic separation catalytic oxidation method and magnetic separation reaction apparatus |
| CN102728461A (en) * | 2012-06-20 | 2012-10-17 | 成都利君科技有限责任公司 | Micro powder fine powder dry-type magnet separator |
| CN102941156A (en) * | 2012-11-20 | 2013-02-27 | 北方重工集团有限公司 | Wind power feeding dry type permanent magnetic separator |
| CN103056028A (en) * | 2013-01-23 | 2013-04-24 | 沈阳华大科技有限公司 | Magnetic ore separation equipment and method |
| CN103191830A (en) * | 2013-04-11 | 2013-07-10 | 成都利君实业股份有限公司 | Fluidized magnetic medium dry magnetic separator and magnetic separation method thereof |
| CN203862383U (en) * | 2014-05-29 | 2014-10-08 | 中国地质科学院郑州矿产综合利用研究所 | Dry-type magnetic agglomeration separator |
| CN105381629A (en) * | 2015-12-10 | 2016-03-09 | 冯文静 | Natural product active component pressurized reverse cycle extraction apparatus and method |
| CN105750204A (en) * | 2016-04-07 | 2016-07-13 | 重庆华珞粉煤灰开发有限责任公司 | Superfine ash production apparatus and production method |
| CN107234001A (en) * | 2017-08-09 | 2017-10-10 | 佛山市高明星诺机械设备有限公司 | A kind of powder electromagnetic separator |
| CN209438815U (en) * | 2018-11-28 | 2019-09-27 | 昆明理工大学 | A kind of particulate continuous dry-type concentration equipment |
Non-Patent Citations (1)
| Title |
|---|
| 细粒钛铁矿选矿新工艺研究;戴惠新等;国外金属矿选矿(第05期);21-23 * |
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