CN115161433A - Steel ladle wire feeding device protected by double-layer air curtain - Google Patents
Steel ladle wire feeding device protected by double-layer air curtain Download PDFInfo
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- CN115161433A CN115161433A CN202210866123.8A CN202210866123A CN115161433A CN 115161433 A CN115161433 A CN 115161433A CN 202210866123 A CN202210866123 A CN 202210866123A CN 115161433 A CN115161433 A CN 115161433A
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- air curtain
- feeding device
- layer air
- double
- ladle
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 59
- 239000010959 steel Substances 0.000 title claims abstract description 59
- 239000000956 alloy Substances 0.000 claims abstract description 85
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 85
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 71
- 239000007789 gas Substances 0.000 claims description 52
- 239000011819 refractory material Substances 0.000 claims description 38
- 229910052786 argon Inorganic materials 0.000 claims description 37
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- OTCHGXYCWNXDOA-UHFFFAOYSA-N [C].[Zr] Chemical compound [C].[Zr] OTCHGXYCWNXDOA-UHFFFAOYSA-N 0.000 claims description 4
- QQHSIRTYSFLSRM-UHFFFAOYSA-N alumanylidynechromium Chemical compound [Al].[Cr] QQHSIRTYSFLSRM-UHFFFAOYSA-N 0.000 claims description 4
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 4
- 229910052596 spinel Inorganic materials 0.000 claims description 4
- 239000011029 spinel Substances 0.000 claims description 4
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 239000002893 slag Substances 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 9
- 239000000779 smoke Substances 0.000 abstract description 7
- 239000000428 dust Substances 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 230000009466 transformation Effects 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 238000002309 gasification Methods 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 abstract description 3
- 238000009851 ferrous metallurgy Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000003570 air Substances 0.000 description 124
- 230000009286 beneficial effect Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 description 3
- RWDBMHZWXLUGIB-UHFFFAOYSA-N [C].[Mg] Chemical compound [C].[Mg] RWDBMHZWXLUGIB-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention belongs to the technical field of ferrous metallurgy, and particularly relates to a ladle wire feeding device protected by double layers of air curtains, wherein the blown slag hole area is small when the device is used, an inner layer of air curtain and an outer layer of air curtain are formed, the outer layer of air curtain is mainly used for isolating external air and preventing the external air from contacting with exposed molten steel and molten alloy wires during wire feeding, and the inner layer of air curtain is mainly used for isolating gas in an alloy wire channel and cooling the alloy wires, so that the melting or gasification and the oxidation with the air are prevented when the device is not put into a furnace, and the generation of pollutants is reduced; the feeding process does not produce smoke dust, so the method has no pollution to the working environment and the ecological environment, can reduce the environmental protection pressure of a steel plant, and is favorable for promoting the low-carbon green transformation process of the steel industry.
Description
Technical Field
The invention relates to the technical field of ferrous metallurgy, in particular to a steel ladle wire feeding device protected by a double-layer air curtain.
Background
With the development of economic society, the application scenes of steel materials are gradually diversified, the requirements on the performance of the steel materials are higher and higher, and different alloy elements need to be added in the steel-making process to realize specific functions. The alloy is mainly added in the tapping and refining processes of the converter, and the adding mode is divided into three modes of bin blanking, manual throwing and ladle wire feeding. Wherein, the wire feeding of the steel ladle refers to a technology that a wire feeding machine is utilized to feed pure wires or core-spun wires made of alloy into molten steel through a slag layer at a specific speed and angle so as to perform deoxidation and alloying functions. Compared with the former two alloy adding modes, the ladle wire feeding has the advantages of adjustable speed, accurate component control, good melting effect and the like, but also has the following problems:
(1) Molten steel suction: as the flow of bottom-blown argon is required to be increased before wire feeding to blow off the slag surface to ensure smooth feeding, slag holes with the diameter of more than 500mm are usually formed, and molten steel is blown up and is sucked after contacting with air, so that the oxygen content and the nitrogen content of the molten steel are increased. Oxygen and nitrogen are harmful elements, which can cause the increase of the number of inclusions, reduce the steel molding and toughness and are not beneficial to the control of the steel quality.
(2) The environmental pollution is large: part of the alloy is easy to oxidize and has large vapor pressure, such as Mg, ca and the like, and can be quickly gasified at the moment of entering the liquid level of the steel, and then the alloy is in contact with the ambient air to be oxidized to generate a large amount of smoke dust. The smoke hood is not arranged above the steel ladle independently, and smoke generated by wire feeding is dispersed into the air, so that the smoke hood harms the health of workers and pollutes the surrounding environment of a steel mill.
Disclosure of Invention
Aiming at the problems of the traditional alloy wire feeding process, the invention provides the environment-friendly steel ladle wire feeding device which is beneficial to avoiding the pollution of molten steel and has long service life.
In order to solve the technical problems, the invention provides the following technical scheme:
a double-layer air curtain protection ladle wire feeding device comprises:
the device comprises an alloy wire channel, an outer layer air curtain nozzle and an inner layer air curtain nozzle;
the alloy wire channel is positioned at the core part of the ladle wire feeding device;
outer air curtain nozzle and inlayer air curtain nozzle all set up along the outside circumference of alloy wire passageway, and outer air curtain nozzle is farther away from alloy wire passageway for inlayer air curtain nozzle.
The preferable scheme of the ladle wire feeding device protected by the double-layer air curtain is as follows: the ladle wire feeding device also comprises an outer layer air curtain air distribution chamber and an inner layer air curtain air distribution chamber;
one end of the outer layer gas curtain gas distribution chamber is connected with the outer layer gas curtain nozzle, and the other end of the outer layer gas curtain gas distribution chamber is connected with the first argon pipe;
one end of the inner layer air curtain gas distribution chamber is connected with the inner layer air curtain nozzle, and the other end of the inner layer air curtain gas distribution chamber is connected with the argon pipe II;
and the first argon pipe and the second argon pipe are both connected with an argon control cabinet.
The preferable scheme of the ladle wire feeding device protected by the double-layer air curtain is as follows: the inner layer air curtain nozzles are made of red copper and are 3-5 in number, the installation direction is that the red copper is gathered relative to the central line of the alloy wire channel, and the included angle is 5-20 degrees; the outer layer air curtain nozzles are made of red copper, the number of the outer layer air curtain nozzles is 4-8, the installation direction of the outer layer air curtain nozzles is outward expanded relative to the center line of the alloy wire channel, and the included angle is 15-35 degrees.
The preferable scheme of the ladle wire feeding device protected by the double-layer air curtain is as follows: the alloy wire channel is made of steel materials, and the steel materials are high-manganese wear-resistant steel; the end far away from the air curtain nozzle is an alloy wire inlet, and the end close to the air curtain nozzle is an alloy wire outlet.
The preferable scheme of the ladle wire feeding device protected by the double-layer air curtain is as follows: the alloy wire inlet is a horn-shaped alloy wire inlet.
The preferable scheme of the ladle wire feeding device protected by the double-layer air curtain is as follows: and refractory materials are circumferentially arranged outside the alloy wire channel and are divided into an upper refractory material and a lower refractory material.
The preferable scheme of the ladle wire feeding device protected by the double-layer air curtain is as follows: the outer layer of the refractory material is coated with a steel shell, and the steel shell is made of low-alloy high-strength steel.
The preferable scheme of the ladle wire feeding device protected by the double-layer air curtain is as follows: the air curtain air distribution chamber and the air curtain nozzle are both arranged in the lower refractory material.
The preferable scheme of the ladle wire feeding device protected by the double-layer air curtain is as follows: the upper refractory material is made of magnesium-carbon, aluminum-carbon or aluminosilicate refractory material.
The preferable scheme of the ladle wire feeding device protected by the double-layer air curtain is as follows: the lower refractory material is made of aluminum-chromium, corundum-spinel or zirconium-carbon refractory material.
The invention has the following beneficial effects:
the invention provides a ladle wire feeding device protected by double layers of air curtains, wherein the area of a blown slag hole is small when the device is used, an inner layer of air curtain and an outer layer of air curtain are formed, the outer layer of air curtain is mainly used for isolating outside air and preventing the outside air from contacting with exposed molten steel and a molten alloy wire during wire feeding, and the inner layer of air curtain is mainly used for isolating gas in an alloy wire channel and cooling the alloy wire, so that the melting or gasification and the oxidation with the air are prevented when the device is not put into a furnace, and the generation of pollutants is reduced; the feeding process does not generate smoke dust, so the method has no pollution to the working environment and the ecological environment, can reduce the environmental protection pressure of a steel plant, and is beneficial to promoting the low-carbon green transformation process of the steel industry.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of a ladle wire feeding device protected by a double-layer air curtain according to the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
fig. 3 is a schematic view of wire feeding by using the ladle wire feeding device protected by the double-layer air curtain of the invention.
The reference numbers indicate:
1-alloy wire inlet, 2-alloy wire channel, 3-upper refractory material, 4-lower refractory material, 5-steel shell, 6-argon control cabinet, 7-argon pipe I, 8-inner layer gas curtain gas distribution chamber, 9-inner layer gas curtain nozzle, 10-outer layer gas curtain gas distribution chamber, 11-outer layer gas curtain nozzle, 12-argon pipe II, 13-alloy wire outlet, 21-steel slag liquid level, 22-outer layer gas curtain, 23-inner layer gas curtain and 24-alloy wire.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front, rear, 8230; \8230;) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components in a specific posture (as shown in the figure), the motion situation, etc., and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a double-layer air curtain protected ladle wire feeding device which can prevent melting or gasification and oxidation with air when not put into a furnace, and reduce the generation of pollutants; the slag hole area blown open when the device is used is small, an inner layer air curtain and an outer layer air curtain are formed, the outer layer air curtain is mainly used for isolating outside air and preventing the outside air from contacting molten steel exposed during wire feeding with a molten alloy wire, the inner layer air curtain is mainly used for isolating gas in an alloy wire channel and cooling the alloy wire, and smoke dust is not generated in the feeding process, so that the device has no pollution to the working environment and the ecological environment, the environmental protection pressure of a steel mill can be reduced, and the device is beneficial to promoting the low-carbon green transformation process of the steel industry.
A ladle wire feeding device protected by double layers of air curtains comprises:
the alloy wire channel 2, the outer layer air curtain nozzle 11 and the inner layer air curtain nozzle 9;
the alloy wire channel 2 is positioned at the core part of the ladle wire feeding device;
outer air curtain nozzle 11 and inlayer air curtain nozzle 9 all set up along the outside circumference of alloy wire passageway 2, and outer air curtain nozzle 11 is farther away from alloy wire passageway 2 for inlayer air curtain nozzle 9.
The ladle wire feeding device also comprises an outer layer air curtain air distribution chamber 10 and an inner layer air curtain air distribution chamber 8;
one end of the outer layer air curtain air distribution chamber 10 is connected with an outer layer air curtain nozzle 11, and the other end of the outer layer air curtain air distribution chamber is connected with the argon pipe I7;
one end of the inner layer air curtain air distribution chamber 8 is connected with the inner layer air curtain nozzle 9, and the other end of the inner layer air curtain air distribution chamber is connected with the argon pipe II 12.
Argon pipe one 7 and argon pipe two 12 all link to each other with argon gas switch board 6, provide accurate tolerance for double-deck gas curtain, realize outer gas curtain gas distribution chamber and inlayer gas curtain gas distribution chamber's argon gas independent control and transmission through argon pipe one and argon pipe two.
The inner layer air curtain nozzles 9 are made of red copper and are 3-5 in number, and the installation direction is that the red copper is gathered relative to the central line of the alloy wire channel 2, and the included angle is 5-20 degrees; specifically, the number of the inner layer air curtain nozzles is in a range of any one or any two of 3, 4 and 5; the installation direction of the inner layer air curtain nozzle is a range which is gathered relative to the central line of the alloy wire channel 2 and has an included angle of any one or any two of, for example but not limited to, 5 degrees, 6 degrees, 7 degrees, 8 degrees, 9 degrees, 10 degrees, 11 degrees, 12 degrees, 13 degrees, 14 degrees, 15 degrees, 16 degrees, 17 degrees, 18 degrees, 19 degrees and 20 degrees;
the outer layer air curtain nozzles 11 are made of red copper, the number of the outer layer air curtain nozzles is 4-8, the installation direction is outward expansion relative to the center line of the alloy wire channel 2, and the included angle is 15-35 degrees; specifically, the number of the outer air curtain nozzles is in a range of any one or any two of 4, 5, 6, 7 and 8; the installation direction of the outer layer air curtain nozzle is outward-extended relative to the central line of the alloy wire channel 2, and the included angle is, for example, but not limited to, any one or any two of the ranges of 15 degrees, 16 degrees, 17 degrees, 18 degrees, 19 degrees, 20 degrees, 21 degrees, 22 degrees, 23 degrees, 24 degrees, 25 degrees, 26 degrees, 27 degrees, 28 degrees, 29 degrees, 30 degrees, 31 degrees, 32 degrees, 33 degrees, 34 degrees and 35 degrees.
The alloy wire passage 2 is made of steel material, and the steel material is high-manganese wear-resistant steel; the end of the alloy wire close to the air curtain nozzle is an alloy wire inlet 1, and the end of the alloy wire close to the air curtain nozzle is an alloy wire outlet 13; the alloy wire inlet 1 is a horn-shaped alloy wire inlet and is used for receiving an alloy wire extending out of a wire feeding machine sleeve.
And refractory materials are circumferentially arranged outside the alloy wire channel 2 and are divided into an upper refractory material 3 and a lower refractory material 4, and the air curtain gas distribution chamber and the air curtain nozzle are both arranged in the lower refractory material 4.
The outer layer of the refractory material is coated with a steel shell 5, a framework and a fixed installation position are provided for the whole device, the splashing high-temperature steel slag corrosion is resisted, and the steel shell is made of low-alloy high-strength steel.
The upper refractory material 3 is made of a magnesium-carbon, aluminum-carbon or aluminosilicate refractory material, plays a role in heat preservation and heat insulation, and prevents the alloy wire from being heated and melted or gasified in advance.
The lower refractory material 4 is made of aluminum-chromium, corundum-spinel or zirconium-carbon refractory material, and has a heat insulation effect and is internally provided with an air curtain air distribution chamber and an air curtain nozzle.
The technical solution of the present invention is further illustrated by the following specific examples.
As shown in fig. 1 to 2, a double air curtain protected ladle wire feeding apparatus according to an embodiment of the present invention includes: the alloy wire channel 2 is positioned at the core part of the ladle wire feeding device and also comprises an outer layer air curtain nozzle 11 and an inner layer air curtain nozzle 9 which are arranged along the circumferential direction of the outside of the alloy wire channel 2; and the outer layer air curtain nozzle 11 is far away from the alloy wire channel 2 relative to the inner layer air curtain nozzle 9; the alloy wire channel 2 is made of steel materials, and the steel materials are high-manganese wear-resistant steel; one end of the alloy wire channel 2, which is far away from the air curtain nozzle, is an alloy wire inlet 1, and one end of the alloy wire channel 2, which is close to the air curtain nozzle, is an alloy wire outlet 13; the alloy wire inlet 1 is a horn-shaped alloy wire inlet and is used for receiving an alloy wire extending out of a wire feeding machine sleeve. And refractory materials are circumferentially arranged outside the alloy wire channel 2 and are divided into an upper refractory material 3 and a lower refractory material 4, and the air curtain gas distribution chamber and the air curtain nozzle are both arranged in the lower refractory material 4. The outer layer of the refractory material is coated with a steel shell 5, so that a framework and a fixed installation position are provided for the whole device, the splashing high-temperature steel slag corrosion is resisted, and the steel shell is made of low-alloy high-strength steel.
As shown in fig. 3, and with reference to fig. 1-2, the double-layer air curtain protection ladle wire feeding device according to another embodiment of the present invention, compared with the previous embodiment, further includes an outer layer air curtain air distribution chamber 10 and an inner layer air curtain air distribution chamber 8; one end of the outer layer air curtain gas distribution chamber 10 is connected with an outer layer air curtain nozzle 11, and the other end of the outer layer air curtain gas distribution chamber is connected with the argon pipe I7; one end of the inner layer air curtain air distribution chamber 8 is connected with the inner layer air curtain nozzle 9, and the other end of the inner layer air curtain air distribution chamber is connected with the argon pipe II 12. Argon gas pipe one 7 and two 12 all link to each other with argon gas switch board 6, for double-deck gas curtain provides accurate tolerance, realize the argon gas independent control and the transmission of outer gas curtain distribution chamber and inlayer gas curtain distribution chamber through argon gas pipe one and argon gas pipe two. The inner layer air curtain nozzles 9 are made of red copper and are 3-5 in number, and the installation direction is that the red copper is gathered relative to the central line of the alloy wire channel 2, and the included angle is 5-20 degrees; the outer layer air curtain 11 is made of red copper, the number of the nozzles is 4-8, the installation direction is outward expansion relative to the central line of the alloy wire channel 2, and the included angle is 15-35 degrees; the upper refractory material 3 is made of magnesium-carbon, aluminum-carbon or aluminosilicate refractory material, plays a role in heat preservation and heat insulation, and prevents the alloy wire from being heated and melted or gasified in advance. The lower refractory material 4 is made of aluminum-chromium, corundum-spinel or zirconium-carbon refractory material, and has a heat insulation effect and is internally provided with an air curtain air distribution chamber and an air curtain nozzle. When the ladle wire feeding device protected by the double-layer air curtain is used, the free end of the alloy wire 24 is aligned to the alloy wire inlet 1, and the alloy wire 24 is required not to be exposed out of the alloy wire outlet 13; opening the outer air curtain 22: starting an argon control cabinet 6, conveying argon to an outer layer gas curtain gas distribution chamber 10 through an argon pipe I7, uniformly conveying the argon to each outer layer gas curtain nozzle 11 by the outer layer gas curtain gas distribution chamber 10, and requiring slight fluctuation of a slag surface but not blowing the slag off in operation; and opening the inner layer air curtain 23, stabilizing the outer layer air curtain for a period of time after the outer layer air curtain is opened, simultaneously conveying argon to the inner layer air curtain gas distribution chamber 8 by the argon control cabinet 6 and the argon pipe II 12, uniformly conveying the argon to each inner layer air curtain nozzle 9 by the outer layer air curtain gas distribution chamber 8, forming stable conical airflow right below the central point of the alloy wire channel 2, and then feeding the alloy wire 24 into molten steel in the steel ladle to realize pollution-free wire feeding of the steel ladle, so that the environmental protection pressure of a steel plant can be reduced, and the low-carbon green transformation process of the steel industry can be promoted.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the content of the present specification or other related technical fields within the spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. The utility model provides a ladle wire feeding device of double-deck air curtain protection which characterized in that includes:
the alloy wire passage, the outer layer air curtain nozzle and the inner layer air curtain nozzle;
the alloy wire channel is positioned at the core part of the ladle wire feeding device;
outer air curtain nozzle and inlayer air curtain nozzle all set up along the outside circumference of alloy wire passageway, and outer air curtain nozzle is farther away from alloy wire passageway for inlayer air curtain nozzle.
2. The ladle wire feeding device with double-layer air curtain protection as claimed in claim 1, characterized by further comprising an outer layer air curtain air distribution chamber and an inner layer air curtain air distribution chamber;
one end of the outer layer gas curtain gas distribution chamber is connected with the outer layer gas curtain nozzle, and the other end of the outer layer gas curtain gas distribution chamber is connected with the argon pipe I;
one end of the inner layer air curtain gas distribution chamber is connected with the inner layer air curtain nozzle, and the other end of the inner layer air curtain gas distribution chamber is connected with the argon pipe II;
and the first argon pipe and the second argon pipe are both connected with an argon control cabinet.
3. The ladle wire feeding device protected by the double-layer air curtain as claimed in claim 1 or 2, wherein the inner-layer air curtain nozzles are made of red copper and are 3-5 in number; the outer air curtain nozzle is made of red copper and is 4-8 in number.
4. The ladle wire feeding device protected by the double-layer air curtain as claimed in claim 1 or 2, wherein the mounting direction of the inner-layer air curtain nozzle is a converging direction relative to the center line of the alloy wire channel, and the included angle is 5-20 degrees; the installation direction of the outer layer air curtain nozzle is outward expansion relative to the center line of the alloy wire channel, and the included angle is 15-35 degrees.
5. The ladle wire feeding device protected by the double-layer air curtain as claimed in claim 1 or 2, wherein the alloy wire channel is made of steel material, and the steel material is high-manganese wear-resistant steel; the end far away from the air curtain nozzle is an alloy wire inlet, and the end close to the air curtain nozzle is an alloy wire outlet.
6. The double-layer gas curtain protected ladle line feeding device as claimed in claim 1 or 2, wherein the refractory material is circumferentially arranged outside the alloy line channel and is divided into an upper refractory material and a lower refractory material.
7. The double-layer air curtain protection ladle line feeding device as claimed in claim 6, wherein the air curtain air distribution chamber and the air curtain nozzle are both arranged in the lower refractory material.
8. The ladle wire feeding device protected by the double-layer air curtain as claimed in claim 6, wherein the outer layer of the refractory material is coated with a steel shell, and the steel shell is made of low-alloy high-strength steel.
9. The double-layer air curtain protected ladle line feeding device as claimed in claim 6, wherein the upper refractory material is a magnesia-carbon, alumina-carbon or aluminosilicate refractory material.
10. The ladle wire feeding device with double-layer gas curtain protection as claimed in claim 6, wherein the lower refractory material is aluminum-chromium, corundum-spinel or zirconium-carbon refractory material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210866123.8A CN115161433B (en) | 2022-07-22 | 2022-07-22 | Ladle wire feeding device with double-layer air curtain protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210866123.8A CN115161433B (en) | 2022-07-22 | 2022-07-22 | Ladle wire feeding device with double-layer air curtain protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115161433A true CN115161433A (en) | 2022-10-11 |
| CN115161433B CN115161433B (en) | 2023-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210866123.8A Active CN115161433B (en) | 2022-07-22 | 2022-07-22 | Ladle wire feeding device with double-layer air curtain protection |
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| CN (1) | CN115161433B (en) |
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| JPH01178363A (en) * | 1988-01-06 | 1989-07-14 | Daido Steel Co Ltd | Method and device for pouring molten metal |
| JPH06297120A (en) * | 1993-04-15 | 1994-10-25 | Nippon Steel Corp | Tundish stopper and device for feeding wire in immersion nozzle |
| CN1394966A (en) * | 2001-07-09 | 2003-02-05 | 济南钢铁股份有限公司 | Gas protection process for feeding alloy wire into molten stel and its equipment |
| CN102168162A (en) * | 2011-03-22 | 2011-08-31 | 熊烈强 | Air cyclone cooling type wire feeding gun |
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| CN107447075A (en) * | 2016-05-31 | 2017-12-08 | 宝山钢铁股份有限公司 | A kind of ladle wire feeding servicing unit and ladle wire feeding method |
| CN106180597A (en) * | 2016-08-31 | 2016-12-07 | 山东钢铁股份有限公司 | A kind of device and method carrying out magnesium process in tundish |
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| CN107022668A (en) * | 2017-06-02 | 2017-08-08 | 钢铁研究总院 | A kind of Yarn feeding device and method for improving steelmaking process calcium alloy recovery rate |
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|---|---|
| CN115161433B (en) | 2023-12-15 |
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