CN217288734U - Magnetic separation powder process equipment - Google Patents
Magnetic separation powder process equipment Download PDFInfo
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- CN217288734U CN217288734U CN202121129474.8U CN202121129474U CN217288734U CN 217288734 U CN217288734 U CN 217288734U CN 202121129474 U CN202121129474 U CN 202121129474U CN 217288734 U CN217288734 U CN 217288734U
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Abstract
The utility model discloses a magnetic separation powder process equipment relates to the ore dressing field, including first order roll-in unit, magnetic separation unit and second level roll-in unit, the magnetic separation unit includes concentrate export, middlings export and tailing export, the feed inlet of magnetic separation unit is connected to the discharge gate of first order roll-in unit, the middlings exit linkage of magnetic separation unit returns feed inlet, the tailing exit linkage second level roll-in unit's of first order roll-in unit feed inlet. The utility model provides a magnetic separation powder process equipment is showing improvement magnetic separation efficiency through hierarchical magnetic separation, it is strongest with magnetism, the concentrate that is the most difficult to grind is directly thrown out, can show the magnetic iron content that reduces in the follow-up material and improve its easy grinding nature, show the grinding energy consumption that reduces equipment, it can further improve the rate of recovery of concentrate to set up middling circulation loop, it grades the tailing to set up the selection powder return circuit, the fine fraction product that obtains can regard as the raw materials of cement or other miscellanies materials, make whole equipment succinct, high efficiency.
Description
Technical Field
The utility model relates to a solid wastes material of slag field of recycling, concretely relates to magnetic separation powder process equipment.
Background
The iron content in the steel slag reaches 15-20%, and the iron content in the steel slag discharged by the steel industry every year reaches more than 1500 ten thousand tons. The iron content of the steel slag is high, and if the iron in the steel slag can not be effectively removed, the difficulty of crushing and grinding the steel slag is increased, the quality of a steel slag mineral powder product is influenced, and a large amount of iron resources are wasted. At present, domestic steel slag is generally separated by crushing and magnetic separation, for example, a 240 ten thousand ton/year magnetic separation processing line of saddle steel is used for processing the steel slag generated by a converter. The magnetic separation powder produced by the production line is about 4 ten thousand tons every year, the grade of the magnetic separation powder is 40-50%, the magnetic separation powder cannot be directly used as a raw material for blast furnace production, and only can be used as an addition raw material for sintering pellets and returned to sintering for reuse, but the recovery utilization rate is lower. Therefore, the steel slag magnetic separation product needs to be further processed to improve the utilization rate of the steel slag.
Patent application documents have also been published in China, and the following documents are representative by analysis:
the invention patent with the patent application number of CN201610994169.2 discloses a method for recovering metallic iron from steel slag magnetic separation powder, but the separation method of the process is complex, multiple times of ore grinding are needed, the energy consumption of the whole process is high, and the recovery rate is too low although the grade of the obtained iron concentrate is high.
By comprehensively considering the technology disclosed above, the magnetic separation process adopted by the existing steel slag magnetic separation production line is complex, the recovery rate of iron resources is low, and the waste of the iron resources is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: to the problem that exists, the utility model provides a magnetic separation powder process equipment shows improvement magnetic separation efficiency through hierarchical magnetic separation, with the magnetism strongest, the ore concentrate of the most difficult mill is directly thrown out, can show the magnetic iron content that reduces in the follow-up material and improve its easy grindability, show the grinding energy consumption that reduces equipment, set up the rate of recovery that middling circulation circuit can further improve the ore concentrate, it grades to the tailing to set up the selection powder circuit, the fine fraction product that obtains can regard as the raw materials of cement or other miscellanies materials, make whole equipment succinct, high-efficient, wide application prospect has.
The utility model adopts the technical scheme as follows:
the utility model provides a magnetic separation powder process equipment, includes first order roll-in unit, magnetic separation unit and second level roll-in unit, the magnetic separation unit includes concentrate export, middlings export and tailing export, the feed inlet of magnetic separation unit is connected to the discharge gate of first order roll-in unit, the middlings exit linkage of magnetic separation unit returns feed inlet, the tailing exit linkage second level roll-in unit's of first order roll-in unit feed inlet.
By adopting the technical scheme, the raw materials are rolled by the first-stage rolling unit and then are sent to the magnetic separation unit for magnetic separation, the concentrate with the strongest magnetism and the most difficult grinding is directly thrown out, the content of magnetic iron in subsequent materials can be obviously reduced, the grindability of the concentrate is improved, the grinding energy consumption of the equipment is obviously reduced, the middlings with stronger magnetism are sent back to the first-stage rolling unit for circular rolling, the recovery rate of the concentrate can be further improved, and the tailings with weaker magnetism and without magnetism are sent to the second-stage rolling unit for powder preparation.
The powder selecting unit comprises a coarse powder discharge port and a fine powder discharge port, the powder selecting unit is arranged between the magnetic separation unit and the second-stage rolling unit or behind the second-stage rolling unit, the discharge port of the second-stage rolling unit is connected with the feed port of the powder selecting unit, and the coarse powder discharge port of the powder selecting unit is connected with the feed port of the second-stage rolling unit.
By adopting the technical scheme, tailings with weak magnetism and no magnetism are sent to the second-stage rolling unit for milling, and materials are graded through the powder selecting unit, so that the obtained fine-grained products can be used as raw materials of cement or other mixed materials.
Furthermore, a middling circulation loop is formed between the first-stage rolling unit and the magnetic separation unit, and a powder selecting loop is formed between the second-stage rolling unit and the powder selecting unit.
By adopting the technical scheme, the recovery rate of the concentrate is improved through the middling circulation loop, and the tailings are graded through the powder separation loop, so that the obtained fine-grained materials are used as raw materials of cement or other mixed materials.
Further, the magnetic separation unit comprises a rotary gradient magnetic separator and a belt magnetic separator.
By adopting the technical scheme, the rotary gradient magnetic separator is used for primary magnetic separation, the concentrate is thrown out early, the energy consumption of equipment is obviously reduced, the rest materials are sent into the belt magnetic separator for secondary magnetic separation, the middlings are obtained and continuously circulated to improve the recovery rate of the concentrate, and the obtained tailings are sent into the secondary rolling unit for milling.
Furthermore, the magnetic separation field intensity of the rotary gradient magnetic separator is 300-3000 GS, and the magnetic separation field intensity of the belt type magnetic separator is 3000-6000 GS.
Due to the adoption of the technical scheme, the magnetic separation efficiency can be obviously improved by graded magnetic separation, and materials with different magnetism are sent into different process flows, so that the whole equipment is simple and efficient, and has wide application prospect.
Further, the powder selecting unit comprises a V-shaped powder selecting machine and a dynamic powder selecting machine, the V-shaped powder selecting machine comprises a coarse powder port and a fine powder port, and the dynamic powder selecting machine comprises a coarse powder port and a fine powder port; the feeding port of the V-shaped powder concentrator is used as the feeding port of the powder concentration unit, the fine powder port of the V-shaped powder concentrator is connected with the feeding port of the dynamic powder concentrator, the coarse powder port of the V-shaped powder concentrator and the coarse powder port of the dynamic powder concentrator are jointly used as the coarse powder discharging port of the powder concentration unit, and the fine powder port of the dynamic powder concentrator is used as the fine powder discharging port of the powder concentration unit.
Due to the adoption of the technical scheme, the powder selecting efficiency can be effectively improved through grading powder selection.
Furthermore, the powder selecting unit also comprises a dust collector and a fan, wherein one end of the dust collector is connected with the fine powder port of the dynamic powder selecting machine, and the other end of the dust collector is connected with the fan.
Due to the adoption of the technical scheme, the materials are separated according to weight through air separation, so that the purpose of sorting fine-grained materials is achieved, and the efficiency and the energy are high.
Further, the grain size of the raw material entering the first-stage rolling unit is less than 50 mm.
Further, the rolling devices in the first-stage rolling unit and the second-stage rolling unit are high-pressure roller mills.
Further, the projection pressure of the high-pressure roller mill is 3-5 MPa.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses a hierarchical magnetic separation is showing and is improving magnetic separation efficiency, sends into different process flow with the material of different magnetism, makes whole equipment succinct, high-efficient, has wide application prospect.
2. The utility model discloses the concentrate that accessible magnetic separation was strongest, was the most difficult to grind is directly thrown out, can reduce the magnetic iron content in the follow-up material and improve its easy grinding nature, is showing the grinding energy consumption that reduces equipment.
3. The utility model discloses a set up middling circulation circuit and can further improve the rate of recovery of concentrate.
4. The utility model discloses set up the selection powder return circuit and grade the tailing, the raw materials of cement or other miscellanies can be regarded as to the fine grit level product that obtains.
5. The utility model discloses hierarchical selection powder can effectively improve selection powder efficiency.
Drawings
FIG. 1 is a process flow diagram of the magnetic powder-making apparatus of the present invention;
FIG. 2 is a process flow diagram of another embodiment of the magnetic powder-making apparatus of the present invention;
FIG. 3 is a schematic structural view of the magnetic powder-making apparatus of the present invention;
FIG. 4 is a schematic structural view of another embodiment of the magnetic powder manufacturing apparatus of the present invention.
The labels in the figure are: 1-a first-stage rolling unit, 2-a magnetic separation unit, 3-a second-stage rolling unit and 4-a powder separation unit.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The utility model provides a magnetic separation powder process equipment, as shown in fig. 1, 3, includes first level roll-in unit 1, magnetic separation unit 2 and second level roll-in unit 3, its characterized in that: the magnetic separation unit 2 comprises a concentrate outlet, a middling outlet and a tailing outlet, the discharge hole of the first-stage rolling unit 1 is connected with the feed inlet of the magnetic separation unit 2, the middling outlet of the magnetic separation unit 2 is connected with and returns to the feed inlet of the first-stage rolling unit 1 and the feed inlet of the tailing outlet connected with the second-stage rolling unit 3. Specifically, the raw materials are rolled by the first-stage rolling unit 1 and then sent to the magnetic separation unit 2 for magnetic separation, the concentrate with the strongest magnetism and the most difficult to grind is directly thrown out, the content of magnetic iron in subsequent materials can be obviously reduced, the grindability of the materials is improved, the grinding energy consumption of the equipment is obviously reduced, the middlings with the stronger magnetism are sent back to the first-stage rolling unit 1 for circular rolling, the recovery rate of the concentrate can be further improved, the tailings with the weaker magnetism and without magnetism are sent to the second-stage rolling unit 3 for powder preparation, the magnetic separation powder preparation equipment is simple in process, the materials with different magnetism are divided by magnetic separation, different treatments are respectively carried out on the materials with different magnetism according to the characteristics of the materials, the high recovery rate can be guaranteed, and the energy consumption can be greatly reduced.
The powder selecting device is characterized by further comprising a powder selecting unit 4, wherein the powder selecting unit 4 comprises a coarse powder discharging port and a fine powder discharging port, the powder selecting unit 4 is arranged behind the second-stage rolling unit 3, the discharging port of the second-stage rolling unit 3 is connected with the feeding port of the powder selecting unit 4, and the coarse powder discharging port of the powder selecting unit 4 is connected with the feeding port of the second-stage rolling unit 3. Specifically, tailings with weak magnetism and no magnetism are sent to a secondary rolling unit 3 for powder preparation, the granularity of a finished product can be effectively controlled through a powder selecting unit 4, and the obtained fine-grained product can be used as a raw material of cement or other mixed materials.
A middling circulation loop is formed between the first-stage rolling unit 1 and the magnetic separation unit 2, and a powder selection loop is formed between the second-stage rolling unit 3 and the powder selection unit 4. Specifically, the recovery rate of concentrate is improved through a middling circulation loop, and tailings are classified through a powder separation loop, so that the obtained fine-grained materials are used as raw materials of cement or other mixed materials.
The magnetic separation unit 2 comprises a rotary gradient magnetic separator and a belt magnetic separator, the arrangement modes of the rotary gradient magnetic separator and the belt magnetic separator can refer to the patent application number of 201922206688.X, and the patent name is a utility model patent of a stacked double-grading magnetic separator and a magnetic ore dry grinding and sorting system, the arrangement is carried out as follows, the rotary gradient magnetic separator comprises a concentrate port and a tailing port, and the belt magnetic separator comprises a concentrate port and a tailing port; the feed inlet of rotary gradient magnet separator is as the feed inlet of magnetic separation unit 2, the concentrate mouth of the feed inlet of belt magnet separator, rotary gradient magnet separator is connected to the tailing mouth of rotary gradient magnet separator is as the concentrate export of magnetic separation unit 2, the concentrate mouth of belt magnet separator is as the middlings export of magnetic separation unit 2, the tailing mouth of belt magnet separator is as the tailing export of magnetic separation unit 2. Specifically, the rotary gradient magnetic separator is used for primary magnetic separation, the concentrate is thrown out early, the energy consumption of equipment is obviously reduced, the rest materials are sent to the belt type magnetic separator for secondary magnetic separation, the middlings are obtained and continuously circulated to improve the recovery rate of the concentrate, the obtained tailings are sent to the secondary rolling unit 3 for milling, the process flow is simple, the treatment is efficient, and energy conservation and emission reduction are achieved.
The magnetic separation field intensity of the rotary gradient magnetic separator is 300-3000 GS, and the magnetic separation field intensity of the belt type magnetic separator is 3000-6000 GS. Particularly, the magnetic separation efficiency can be obviously improved by the graded magnetic separation, and materials with different magnetism are sent into different process flows, so that the whole equipment is simple and efficient, and has wide application prospect.
The powder selecting unit 4 comprises a V-shaped powder selecting machine and a dynamic powder selecting machine, the V-shaped powder selecting machine comprises a coarse powder port and a fine powder port, and the dynamic powder selecting machine comprises a coarse powder port and a fine powder port; the feed inlet of the V-shaped powder concentrator is used as the feed inlet of the powder concentration unit 4, the fine powder port of the V-shaped powder concentrator is connected with the feed inlet of the dynamic powder concentrator, the coarse powder port of the V-shaped powder concentrator and the coarse powder port of the dynamic powder concentrator are jointly used as the coarse powder discharge port of the powder concentration unit 4, and the fine powder port of the dynamic powder concentrator is used as the fine powder discharge port of the powder concentration unit 4. Particularly, the powder separation efficiency can be effectively improved through grading powder separation.
The powder selecting unit 4 further comprises a dust collector and a fan, wherein one end of the dust collector is connected with a fine powder port of the dynamic powder selecting machine, and the other end of the dust collector is connected with the fan. Specifically, materials are separated according to weight through air separation, so that the purpose of sorting fine-grained materials is achieved, and the method is efficient and energy-saving.
The grain diameter of the raw material entering the first-stage rolling unit 1 is less than 50 mm.
The rolling devices in the first-stage rolling unit 1 and the second-stage rolling unit 3 are high-pressure roller mills.
The projection pressure of the high-pressure roller mill is 3-5 MPa.
Example 2
The utility model provides a magnetic separation powder process equipment, selects the position of powder unit 4 in replacement embodiment 1, as shown in fig. 2, 4, select powder unit 4 to locate between magnetic separation unit 2 and second level roll-in unit 3, the discharge gate of magnetic separation unit 2 is connected to the feed inlet of selecting powder unit 4, the feed inlet of selecting powder unit 4 is connected to the discharge gate of second level roll-in unit 3, the feed inlet of second level roll-in unit 3 is connected to the middlings discharge gate of selecting powder unit 4. Specifically, the material subjected to magnetic separation is directly sent into the powder separation unit 4, and fine-grained material is thrown out early, so that the treatment capacity of the second-stage rolling unit 3 can be reduced, and the energy consumption is greatly saved.
Example 3
The raw steel slag ore of a certain steel mill has the water content of 8.78 percent, the water content is higher, the total iron grade is 24.60 percent, and the maximum steel slagThe particle size is less than 15mm, the magnetic separation powder making device in embodiment 1 is adopted for processing, the projection pressure of a high-pressure roller mill is 4.22MPa, the steel slag solid waste is rolled by a first-stage rolling unit 1, the pressed product is fed into a magnetic separation unit 2, the magnetic separation field strength of a rotary gradient magnetic separator is 1500GS, the magnetic separation field strength of a belt magnetic separator is 4500GS, the grade of concentrate obtained by magnetic separation is 52.5%, ore during magnetic separation is returned to the first-stage rolling unit 1, tailings are fed into a second-stage rolling unit 3, the steel slag tailings rolled by the second-stage rolling unit 3 are classified by a powder selecting unit 4, fine-grained materials are thrown out by classification, and coarse-grained materials obtained by classification are returned to the second-stage rolling unit 3 for circular rolling. The specific surface area of the finally obtained fine-grained material is 452m 2 /kg。
Example 4
The raw steel slag ore of a certain steel mill has the water content of 5.0%, the total iron grade of 27.04% and the maximum grain size of steel slag of less than 20mm, the raw steel slag ore is treated by the magnetic separation powder preparation equipment in the embodiment 2, the projection pressure of a high-pressure roller mill is 4.22MPa, the solid waste of the steel slag is rolled by a first-stage rolling unit 1, the pressed product is fed into a magnetic separation unit 2, the magnetic separation field intensity of a rotary gradient magnetic separator is 1000GS, the magnetic separation field intensity of a belt magnetic separator is 5000, the concentrate grade obtained by magnetic separation is 60.3%, the middlings obtained by magnetic separation are returned to the first-stage rolling unit 1, the tailings are fed into a powder selection unit 4 for classification, the classified fine-fraction material is thrown out, the classified coarse-fraction material is fed into a second-stage rolling unit 3, the classified coarse-fraction material is returned to the powder selection unit 4 for classification after being rolled by the second-stage rolling unit 3, and the specific surface area of the finally obtained fine-fraction material is 498m 2 /kg。
The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to aid in understanding the methods and their core concepts. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (10)
1. The utility model provides a magnetic separation powder process equipment, includes first order roll-in unit (1), magnetic separation unit (2) and second level roll-in unit (3), its characterized in that: the magnetic separation unit (2) comprises a concentrate outlet, a middling outlet and a tailing outlet, the discharge hole of the first-stage rolling unit (1) is connected with the feed inlet of the magnetic separation unit (2), the middling outlet of the magnetic separation unit (2) is connected with and returns to the feed inlet of the first-stage rolling unit (1) and the feed inlet of the tailing outlet connected with the second-stage rolling unit (3).
2. The magnetic powder manufacturing apparatus of claim 1, wherein: the powder selecting unit (4) comprises a coarse powder discharging port and a fine powder discharging port, the powder selecting unit (4) is arranged between the magnetic separation unit (2) and the second-stage rolling unit (3) or behind the second-stage rolling unit (3), the discharging port of the second-stage rolling unit (3) is connected with the feeding port of the powder selecting unit (4), and the coarse powder discharging port of the powder selecting unit (4) is connected with the feeding port of the second-stage rolling unit (3).
3. The magnetic powder manufacturing apparatus of claim 2, wherein: a middling circulation loop is formed between the first-stage rolling unit (1) and the magnetic separation unit (2), and a powder selection loop is formed between the second-stage rolling unit (3) and the powder selection unit (4).
4. A magnetic powder manufacturing apparatus as claimed in any one of claims 1 to 3, characterized in that: the magnetic separation unit (2) comprises a rotary gradient magnetic separator and a belt magnetic separator.
5. The magnetic powder manufacturing apparatus of claim 4, wherein: the magnetic separation field strength of the rotary gradient magnetic separator is 300-3000 GS, and the magnetic separation field strength of the belt type magnetic separator is 3000-6000 GS.
6. The magnetic powder manufacturing apparatus of claim 2 or 3, wherein: the powder selecting unit (4) comprises a V-shaped powder selecting machine and a dynamic powder selecting machine, the V-shaped powder selecting machine comprises a coarse powder port and a fine powder port, and the dynamic powder selecting machine comprises a coarse powder port and a fine powder port; the feeding port of the V-shaped powder concentrator is used as the feeding port of the powder concentration unit (4), the fine powder port of the V-shaped powder concentrator is connected with the feeding port of the dynamic powder concentrator, the coarse powder port of the V-shaped powder concentrator and the coarse powder port of the dynamic powder concentrator are jointly used as the coarse powder discharging port of the powder concentration unit (4), and the fine powder port of the dynamic powder concentrator is used as the fine powder discharging port of the powder concentration unit (4).
7. The magnetic powder manufacturing apparatus of claim 6, wherein: the powder selecting unit (4) further comprises a dust collector and a fan, wherein one end of the dust collector is connected with the fine powder port of the dynamic powder selecting machine, and the other end of the dust collector is connected with the fan.
8. The magnetic powder manufacturing equipment of claim 1, characterized in that: the grain diameter of the raw material entering the first-stage rolling unit (1) is less than 50 mm.
9. The magnetic powder manufacturing apparatus of claim 1, wherein: and the rolling devices in the first-stage rolling unit (1) and the second-stage rolling unit (3) are high-pressure roller mills.
10. The magnetic powder manufacturing equipment of claim 9, characterized in that: the projection pressure of the high-pressure roller mill is 3-5 MPa.
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| CN202121129474.8U CN217288734U (en) | 2021-05-25 | 2021-05-25 | Magnetic separation powder process equipment |
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| CN202121129474.8U CN217288734U (en) | 2021-05-25 | 2021-05-25 | Magnetic separation powder process equipment |
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| CN217288734U true CN217288734U (en) | 2022-08-26 |
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