CN210215503U - Zero-inclusion steel production equipment - Google Patents
Zero-inclusion steel production equipment Download PDFInfo
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- CN210215503U CN210215503U CN201920965720.XU CN201920965720U CN210215503U CN 210215503 U CN210215503 U CN 210215503U CN 201920965720 U CN201920965720 U CN 201920965720U CN 210215503 U CN210215503 U CN 210215503U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a zero mix with steel production facility, concretely relates to steel production field, smelt module and no sediment vacuum casting module including iron ore powder fine grinding module, hydrogen reduction iron ore powder module, magnetic separation module, suspension, the delivery outlet of iron ore powder fine grinding module passes through the pipe connection with the feed inlet of hydrogen reduction iron ore powder module, the output of hydrogen reduction iron ore powder module is connected with the storage case in the magnetic separation module, the output of magnetic separation module is connected with the feed end that the module was smelted in the suspension, the output that the module was smelted in the suspension is connected with the input of no sediment vacuum casting module. The utility model discloses the production of decarbonization, desulfurization, deoxidation, dephosphorization in-process inclusion during steel production can be effectively reduced, the steel of producing does not contain the inclusion almost, or states that inclusion content is extremely low, can reach the degree that approaches to zero.
Description
Technical Field
The utility model relates to a production technical field of steel, more specifically say, the utility model relates to a zero mix with steel production facility.
Background
In the traditional steel-making equipment, a large amount of inclusions with different sizes are contained in the finally obtained steel product regardless of a long flow, a short flow or special metallurgy. The characteristics of traditional steel-making equipment determine that the sources of inclusions in steel are of two categories, namely endogenous inclusions and exogenous inclusions. The internal inclusion is mainly because carbon and silicon in the molten iron are oxidized in the whole steel making process, so that the oxygen content in the steel is increased, and then the molten iron is deoxidized by adding aluminum, ferrosilicon and the like, a large amount of inclusions are formed in the steel in the deoxidizing process, and are removed by being captured by slag after partial floating in the refining and solidifying processes, and a large amount of inclusions are remained in the steel without time of floating to form inclusions. Large-particle endogenous inclusions can be reduced by applying technical means such as argon blowing stirring, electromagnetic stirring and the like, but cannot be completely eliminated, a large amount of fine endogenous inclusions in steel cannot be removed at all, and the endogenous inclusions cannot be completely removed by traditional steelmaking equipment theoretically. The foreign inclusion mainly comes from the slag rolling in the smelting and continuous casting process, the peeling of refractory materials and the inclusion contained in the added alloy. For the traditional steel-making equipment, if the process technology and the management level are improved, the foreign impurities can be reduced, but the foreign impurities cannot be avoided, and the traditional steel-making equipment cannot theoretically avoid the foreign impurities.
Steel plays a great role in national economy as the most widely used metal material. The inclusion content has serious influence on the quality of steel, reduces the inclusions in the steel, finally produces the steel with zero inclusions, can greatly improve the service life of the steel and create great economic value.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art's above-mentioned defect, the embodiment of the utility model provides a zero mix with steel production facility, through being provided with iron ore powder fine grinding module, hydrogen reduction iron ore powder module, magnetic separation module, suspension smelting module and no sediment vacuum casting module, decarburization, desulfurization, deoxidation, the production of dephosphorization in-process inclusion during the steel production can effectively be reduced, the steel of producing does not contain the inclusion almost, or states that inclusion content is extremely low, can reach the degree that approaches to zero.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a zero mix with steel production facility, includes iron ore powder fine grinding module, hydrogen reduction iron ore powder module, magnetic separation module, suspension smelting module and no sediment vacuum casting module, the delivery outlet of iron ore powder fine grinding module passes through the pipe connection with the feed inlet of hydrogen reduction iron ore powder module, the output of hydrogen reduction iron ore powder module is connected with the storage case in the magnetic separation module, the output of magnetic separation module is connected with the feed end of suspension smelting module, the output of suspension smelting module is connected with the input of no sediment vacuum casting module.
In a preferred embodiment, the iron ore fine grinding module includes a lifting device and a grinding device.
In a preferred embodiment, the hydrogen reduction iron ore powder module comprises a fluidized bed, an iron ore powder feeding hole is formed in one side of the lower end of the fluidized bed, a cyclone separation device is arranged on one side of the fluidized bed, an exhaust gas outflow pipe is connected to the upper end of the cyclone separation device, an outlet is formed in the bottom end of the cyclone separation device, an electric heater is arranged inside the fluidized bed, and the output end of the grinding device is connected with the iron ore powder feeding hole.
In a preferred embodiment, the magnetic separation module comprises a reduced iron powder storage box, the output end of the fluidized bed is connected with the feed inlet of the reduced iron powder storage box, the output end of one side of the bottom end of the reduced iron powder storage box is connected with a magnetic separation device through a pipeline, a scraper block is arranged on one side of the upper end of the magnetic separation device, and one end of the scraper block is connected with a reduced iron powder discharge outlet.
In a preferred embodiment, the suspension smelting module comprises a smelting tank, an alloy adding device and a vacuum device, the reduced iron powder discharge port of the magnetic separation module is connected with the feed port of the smelting tank, an induction coil is arranged inside the smelting tank, the vacuum device comprises a motor and a vacuum pump, the power of the motor is transmitted to the vacuum pump through a mechanical device, and the extraction opening of the vacuum pump is communicated with one side of the upper end of the smelting tank.
In a preferred embodiment, the slag-free vacuum casting module is a water-cooled copper cooling crucible, and the slag-free vacuum casting module is arranged below the suspension smelting module.
In a preferred embodiment, the mesh size of the grinding device in the iron ore powder fine grinding module is selected from 200 meshes, 250 meshes and 300 meshes.
In a preferred embodiment, a temperature sensor is arranged in the fluidized bed, and the temperature sensor is connected with a temperature controller.
The utility model discloses a technological effect and advantage:
1. the utility model discloses a hydrogen reduction iron ore powder has avoided iron ore powder agglomeration process, so needn't use the coke as the skeleton of support material post, has avoided the use of coke, consequently does not have the carburization process, and the steelmaking iron source of acquisition is very pure, and the iron source does not contain carbon, and traditional steelmaking equipment decarbonization process when steelmaking, the oxygen content risees in the steel, and the later stage will add the deoxidier deoxidation, and the deoxidation process brings a large amount of inclusions. Compared with the traditional steelmaking equipment, the zero-inclusion steel steelmaking equipment omits the decarburization and the deoxidation processes and also avoids the inclusion caused by the deoxidation process;
2. the utility model discloses because the iron source of zero inclusion steel steelmaking equipment does not use coal or coke as the reductant, do not have sulphur to get into in the steelmaking iron source, therefore do not need the desulfurization during the steelmaking, finally can not have the desulfurization result to produce, also can not have the desulfurization result to get into and form the inclusion in the steel, traditional steelmaking equipment is with coal or coke as the reductant, contain sulphur in coal or the coke, these sulphur can not avoid getting into in the iron source, need the desulfurization during the steelmaking, and the desulfurization result also can get into the molten steel and form the inclusion;
3. the utility model discloses because the iron source of zero-inclusion steel steelmaking equipment does not use coal or coke as the reductant, does not have phosphorus to get into in the steelmaking iron source, therefore does not need the dephosphorization during steelmaking, does not have the dephosphorization result to produce at last, does not have the dephosphorization result to get into and form the inclusion in the steel yet, and traditional steelmaking equipment is with coal or coke as the reductant, and reducing power is very strong under high temperature, with the phosphorus reduction in the iron ore powder, phosphorus gets into in the iron source, need the dephosphorization during steelmaking, and the dephosphorization result also can get into the molten steel and form the inclusion;
4. the utility model discloses be provided with the magnetic separation module, obtain the reduced iron powder behind the hydrogen reduced iron ore powder, the reduced iron powder passes through the magnetic separation, and gangue phase and iron phase separation obtain pure iron phase, do not have the sediment to smelt in follow-up suspension steelmaking equipment, and the contact of sediment and steel has been stopped to zero inclusion steel steelmaking equipment, has cut off the sediment and has got into the route that forms the inclusion in the steel, and consequently the trend of mixing together to zero is further, and traditional steelmaking equipment sediment steel is mixed together, and the unavoidable has the sediment to take place, brings the large granule inclusion in the steel;
5. the utility model discloses a module is smelted in suspension, does not have refractory material in the suspension steelmaking equipment, and zero inclusion steel steelmaking equipment has stopped the contact of refractory material and steel, has cut off the route that forms the inclusion in getting into the steel because of refractory material corrodes, therefore the trend of mixing with is further to zero, steel and refractory material contact when traditional steelmaking equipment steelmaking, have inevitably refractory material to corrode to peel off and get into in the molten steel, bring the large granule inclusion in the steel;
6. to sum up, the utility model discloses compare with traditional steelmaking equipment, can stop external or endogenous inclusion and get into the molten steel, the steel of producing does not contain the inclusion almost, or states that inclusion content is extremely low, can reach the degree that approaches to zero.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural diagram of the module for reducing iron ore powder by hydrogen gas.
FIG. 3 is the schematic structural diagram of the magnetic separation module of the present invention.
Fig. 4 is a schematic structural diagram of the suspension smelting module of the present invention.
The reference signs are: 1 iron ore powder fine grinding module, 101 lifting device, 102 grinding device, 2 hydrogen reduced iron ore powder module, 201 fluidized bed, 202 iron ore powder feeding hole, 203 cyclone separation device, 204 exhaust gas outflow pipe, 205 outlet, 206 electric heater, 207 temperature sensor, 3 magnetic separation module, 301 reduced iron powder storage box, 302 magnetic separation device, 303 scraper plate, 304 reduced iron powder discharging hole, 4 suspension smelting module, 401 smelting pot, 402 motor, 403 vacuum pump, 404 induction coil and 5 slag-free vacuum casting module.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The zero-inclusion steel production equipment shown in the figures 1-4 comprises an iron ore powder fine grinding module 1, a hydrogen reduced iron ore powder module 2, a magnetic separation module 3, a suspension smelting module 4 and a slag-free vacuum casting module 5, wherein an output port of the iron ore powder fine grinding module 1 is connected with a feed port of the hydrogen reduced iron ore powder module 2 through a pipeline, an output end of the hydrogen reduced iron ore powder module 2 is connected with a storage box in the magnetic separation module 3, an output end of the magnetic separation module 3 is connected with a feed end of the suspension smelting module 4, and an output end of the suspension smelting module 4 is connected with an input end of the slag-free vacuum casting module 5.
The iron ore powder fine grinding module 1 comprises a lifting device 101 and a grinding device 102.
The hydrogen reduction iron ore powder module 2 comprises a fluidized bed 201, an iron ore powder feed inlet 202 is formed in one side of the lower end of the fluidized bed 201, a cyclone separation device 203 is arranged on one side of the fluidized bed 201, an exhaust gas outflow pipe 204 is connected to the upper end of the cyclone separation device 203, an outlet 205 is formed in the bottom end of the cyclone separation device 203, an electric heater 206 is arranged inside the fluidized bed 201, and the output end of the grinding device 102 is connected with the iron ore powder feed inlet 202.
The suspension smelting module 4 comprises a smelting tank 401, an alloy adding device and a vacuum device, a reduced iron powder discharge port 304 is connected with a feed inlet of the smelting tank 401, an induction coil 404 is arranged inside the smelting tank 401, the vacuum device comprises a motor 402 and a vacuum pump 403, the power of the motor 402 is transmitted to the vacuum pump 403 through a mechanical device, and an air exhaust port of the vacuum pump 403 is communicated with one side of the upper end of the smelting tank 401.
The slag-free vacuum casting module 5 is a water-cooled copper cooling crucible, and the slag-free vacuum casting module 5 is arranged below the suspension smelting module.
The screen mesh size of the grinding device 102 in the iron ore powder fine grinding module 1 can be selected from 200 meshes, 250 meshes and 300 meshes.
A temperature sensor 207 is arranged in the fluidized bed 201, and the temperature sensor 207 is connected with a temperature controller.
Example 1:
the iron ore powder firstly enters a lifting device 101 in an iron ore powder fine grinding module 1, then is ground and screened by a grinding device 102 to screen out particles with the particle size below 200 meshes, a discharge port of the grinding device 102 in the iron ore powder fine grinding module 1 is connected with an iron ore powder feed port 202 of a fluidized bed 201 in a hydrogen reduced iron ore powder module 2, the screened iron ore powder enters the hydrogen reduced iron ore powder module 2 to carry out reduction reaction, an electric heater 206 and a temperature controller 207 in the fluidized bed 201 control the reduction temperature, waste gas is discharged through a waste gas discharge pipe 204, the iron ore powder is reduced, the gangue phase is kept unchanged, an outlet of the hydrogen reduced iron ore powder module 2 is connected with a reduced iron powder storage box 301 in a magnetic separation module 3, the reduced iron powder in the reduced iron powder storage box 301 enters a magnetic separation device 302, the iron powder after magnetic separation enters a smelting tank 401 through a reduced iron powder discharge port 304, vacuumizing the smelting tank 401, carrying out vacuum suspension smelting, and adding pure alloying elements C, Si, Mn and Cr to obtain a finished product molten steel component C: 0.95-1.05%, Si: 0.15 to 0.35%, Mn: 0.25-0.45%, Cr: 1.40-1.65%, Fe: 96.50-97.25%, wherein the outlet of the suspension smelting module 4 is connected with the inlet of the slag-free vacuum casting module 5, and the finished product molten steel in the suspension smelting module 4 enters the slag-free vacuum casting module 5 to cast a finished product steel ingot. The content of the inclusions in the steel ingot is almost zero through detection, the number of the inclusions on a sample per square centimeter is less than 0.7 through the surface scanning of the inclusions, the size of the inclusions is less than 0.5 mu m, and the steel ingot meets the definition of zero inclusion steel.
Example 2:
the iron ore powder is firstly put into an iron ore powder fine grinding module 1 for fine grinding and screening, particles with the particle size of below 250 meshes are screened out, and pure alloy elements C, Si, Mn, Cr, Mo and V are added when the iron ore powder is smelted by a vacuum suspension smelting module 4 to obtain a finished product molten steel component C: 0.40-0.45%, Si: 0.17 to 0.37%, Mn: 0.60-0.80%, Cr: 1.00-1.10%, Mo: 0.19-0.25%, V: 0.01-0.02%, Fe: 97.01-97.63%. Otherwise, the same procedure as in example 1 was repeated. The content of the inclusions in the steel ingot is almost zero through detection, the number of the inclusions on a sample per square centimeter is less than 0.5 through the surface scanning of the inclusions, the size of the inclusions is less than 0.8 mu m, and the steel ingot meets the definition of zero inclusion steel.
Example 3:
the iron ore powder is firstly put into an iron ore powder fine grinding module 1 for fine grinding and screening, particles with the particle size of below 300 meshes are screened out, and pure alloy elements C, Si, Mn and Cr are added when the iron ore powder is smelted by a vacuum suspension smelting module 4 to obtain a finished product molten steel component C: 0.14 to 0.19%, Si: 0.20 to 0.40%, Mn: 1.00-1.30%, Cr: 0.80-1.10%, Fe: 97.01-97.86%. Otherwise, the same procedure as in example 1 was repeated. The content of the inclusions in the steel ingot is almost zero through detection, the number of the inclusions on a sample per square centimeter is less than 0.3 through the surface scanning of the inclusions, the size of the inclusions is less than 0.9 mu m, and the steel ingot meets the definition of zero inclusion steel.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;
and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a zero steel production facility that mingles which characterized in that: the device comprises an iron ore powder fine grinding module (1), a hydrogen reduced iron ore powder module (2), a magnetic separation module (3), a suspension smelting module (4) and a slag-free vacuum pouring module (5), wherein an output port of the iron ore powder fine grinding module (1) is connected with a feed inlet of the hydrogen reduced iron ore powder module (2) through a pipeline, an output end of the hydrogen reduced iron ore powder module (2) is connected with a storage box in the magnetic separation module (3), an output end of the magnetic separation module (3) is connected with a feed end of the suspension smelting module (4), and an output end of the suspension smelting module (4) is connected with an input end of the slag-free vacuum pouring module (5).
2. The zero inclusion steel production equipment according to claim 1, characterized in that: the iron ore powder fine grinding module (1) comprises a lifting device (101) and a grinding device (102).
3. The zero inclusion steel production equipment according to claim 2, characterized in that: the hydrogen reduction iron ore powder module (2) comprises a fluidized bed (201), an iron ore powder feeding hole (202) is formed in one side of the lower end of the fluidized bed (201), a cyclone separation device (203) is arranged on one side of the fluidized bed (201), an exhaust gas outflow pipe (204) is connected to the upper end of the cyclone separation device (203), an outlet (205) is formed in the bottom end of the cyclone separation device (203), an electric heater (206) is arranged inside the fluidized bed (201), and the output end of the grinding device (102) is connected with the iron ore powder feeding hole (202).
4. The zero inclusion steel production equipment according to claim 3, characterized in that: magnetic separation module (3) are including reduced iron powder storage case (301), the feed inlet of reduced iron powder storage case (301) is connected to the output of fluidized bed (201), the output of one side of reduced iron powder storage case (301) bottom has magnetic separation device (302) through the pipe connection, upper end one side of magnetic separation device (302) is provided with scrapes material piece (303), the one end of scraping material piece (303) is connected with reduced iron powder discharge gate (304).
5. The zero inclusion steel production equipment according to claim 4, characterized in that: the suspension smelting module (4) comprises a smelting tank (401), an alloy adding device and a vacuum device, wherein a reduced iron powder discharge hole (304) is connected with a feed inlet of the smelting tank (401), an induction coil (404) is arranged inside the smelting tank (401), the vacuum device comprises a motor (402) and a vacuum pump (403), the power of the motor (402) is transmitted to the vacuum pump (403) through a mechanical device, and a pumping hole of the vacuum pump (403) is communicated with one side of the upper end of the smelting tank (401).
6. The zero inclusion steel production equipment according to claim 1, characterized in that: the slag-free vacuum casting module (5) is a water-cooled copper cooling crucible, and the slag-free vacuum casting module (5) is arranged below the suspension smelting module.
7. The zero inclusion steel production equipment according to claim 2, characterized in that: the screen mesh of the grinding device (102) in the iron ore powder fine grinding module (1) can be 200 meshes, 250 meshes and 300 meshes.
8. The zero inclusion steel production equipment according to claim 3, characterized in that: a temperature sensor (207) is arranged in the fluidized bed (201), and the temperature sensor (207) is connected with a temperature controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920965720.XU CN210215503U (en) | 2019-06-25 | 2019-06-25 | Zero-inclusion steel production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920965720.XU CN210215503U (en) | 2019-06-25 | 2019-06-25 | Zero-inclusion steel production equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210215503U true CN210215503U (en) | 2020-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920965720.XU Expired - Fee Related CN210215503U (en) | 2019-06-25 | 2019-06-25 | Zero-inclusion steel production equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210215503U (en) |
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2019
- 2019-06-25 CN CN201920965720.XU patent/CN210215503U/en not_active Expired - Fee Related
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Granted publication date: 20200331 Termination date: 20200625 |