CN115161433B - Ladle wire feeding device with double-layer air curtain protection - Google Patents
Ladle wire feeding device with double-layer air curtain protection Download PDFInfo
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- CN115161433B CN115161433B CN202210866123.8A CN202210866123A CN115161433B CN 115161433 B CN115161433 B CN 115161433B CN 202210866123 A CN202210866123 A CN 202210866123A CN 115161433 B CN115161433 B CN 115161433B
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- 239000000956 alloy Substances 0.000 claims abstract description 78
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 78
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 64
- 239000010959 steel Substances 0.000 claims abstract description 64
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 73
- 239000011819 refractory material Substances 0.000 claims description 40
- 229910052786 argon Inorganic materials 0.000 claims description 38
- 238000009434 installation Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 claims description 4
- RWDBMHZWXLUGIB-UHFFFAOYSA-N [C].[Mg] Chemical compound [C].[Mg] RWDBMHZWXLUGIB-UHFFFAOYSA-N 0.000 claims description 4
- 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
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000002893 slag Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 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
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 239000000779 smoke Substances 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
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 238000009851 ferrous metallurgy Methods 0.000 abstract description 2
- 239000003570 air Substances 0.000 description 134
- 239000007789 gas Substances 0.000 description 26
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003517 fume Substances 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
- 241000218202 Coptis Species 0.000 description 1
- 235000002991 Coptis groenlandica Nutrition 0.000 description 1
- 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
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000003908 quality control method 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
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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention belongs to the technical field of ferrous metallurgy, and particularly relates to a steel ladle wire feeding device with double-layer air curtain protection, wherein the area of a slag hole blown out during use is small, an inner air curtain and an outer air curtain are formed, the outer air curtain is mainly used for isolating outside air, preventing the outside air from contacting naked molten steel and molten alloy wires during wire feeding, the inner air curtain is mainly used for isolating gas in an alloy wire channel and cooling the alloy wires, preventing melting or gasification and oxidation with air during non-charging, and reducing the generation of pollutants; the feeding process does not produce smoke dust, so the feeding device has no pollution to the working environment and the ecological environment, can lighten the environmental protection pressure of a steel mill, and is beneficial to pushing the low-carbon green transformation process in 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 with double-layer air curtain protection.
Background
With the development of economy and society, the application scenes of steel materials are gradually diversified, and the performance requirements are also higher and higher, so that different alloy elements are required to be added in the steelmaking process to realize specific functions. The alloy is mainly added in the converter tapping and refining processes, and the adding modes are divided into three modes of feed bin blanking, manual throwing and ladle wire feeding. The ladle wire feeding refers to a technology that pure wires or cored wires made of alloy are added into molten steel through a slag layer at a specific speed and angle by using a wire feeder, so that deoxidization and alloying effects are achieved. 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) Sucking molten steel: before feeding, the bottom blowing argon flow is increased to blow off the slag surface so as to ensure smooth feeding, so that slag holes with the diameter of more than 500mm are formed, molten steel is turned over, and air is sucked after the molten steel contacts with air, so that the oxygen content and the nitrogen content of the molten steel are increased. And oxygen and nitrogen are harmful elements, which can cause the increase of the number of inclusions, the plastic shape and toughness of the steel are reduced, and the quality control of the steel is not facilitated.
(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, can be gasified rapidly at the moment of entering the liquid level of the steel, and then is contacted with ambient air for oxidization, so that a large amount of smoke dust is generated. The fume hood is not independently arranged above the steel ladle, and the fume generated by the wire feeding is dispersed into the air, so that the health of workers is endangered, and the surrounding environment of a steel mill is polluted.
Disclosure of Invention
Aiming at the problems existing in the traditional process of feeding the alloy wire into the molten steel, the invention provides the environment-friendly steel ladle wire feeding device which is favorable for avoiding the pollution of the molten steel and has long service life.
In order to solve the technical problems, the invention provides the following technical scheme:
a ladle wire feeding device with double-layer air curtain protection, comprising:
an alloy wire channel, an outer air curtain nozzle and an inner air curtain nozzle;
the alloy wire channel is positioned at the core part of the ladle wire feeding device;
the outer air curtain nozzle and the inner air curtain nozzle are arranged along the outer circumference of the alloy wire channel, and the outer air curtain nozzle is further separated from the gold wire channel relative to the inner air curtain nozzle.
As the preferable scheme of the ladle wire feeding device with double-layer air curtain protection, the invention comprises the following steps: the steel ladle wire feeding device further comprises an outer air curtain air distribution chamber and an inner air curtain air distribution chamber;
one end of the outer air curtain distribution chamber is connected with the outer air curtain nozzle, and the other end of the outer air curtain distribution chamber is connected with the argon pipe I;
one end of the inner air curtain distribution chamber is connected with the inner air curtain nozzle, and the other end of the inner air curtain distribution chamber is connected with the argon pipe II;
and the argon pipe I and the argon pipe II are connected with an argon control cabinet.
As the preferable scheme of the ladle wire feeding device with double-layer air curtain protection, the invention comprises the following steps: the inner-layer air curtain nozzles are made of red copper, the number of the inner-layer air curtain nozzles is 3-5, the installation direction is gathered relative to the central line of the alloy wire channel, and the included angle is 5-20 degrees; the outer air curtain nozzles are made of red copper, the number of the outer air curtain nozzles is 4-8, the installation direction is outward expansion relative to the central line of the alloy line channel, and the included angle is 15-35 degrees.
As the preferable scheme of the ladle wire feeding device with double-layer air curtain protection, the invention comprises the following steps: the alloy wire channel is made of a 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.
As the preferable scheme of the ladle wire feeding device with double-layer air curtain protection, the invention comprises the following steps: the alloy wire inlet is a horn-shaped alloy wire inlet.
As the preferable scheme of the ladle wire feeding device with double-layer air curtain protection, the invention comprises the following steps: the exterior of the alloy wire channel is circumferentially arranged with refractory materials, and the refractory materials are divided into an upper refractory material and a lower refractory material.
As the preferable scheme of the ladle wire feeding device with double-layer air curtain protection, the invention comprises the following steps: 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.
As the preferable scheme of the ladle wire feeding device with double-layer air curtain protection, the invention comprises the following steps: the air curtain distribution chamber and the air curtain nozzle are both arranged in the lower refractory material.
As the preferable scheme of the ladle wire feeding device with double-layer air curtain protection, the invention comprises the following steps: the upper refractory material is made of magnesium-carbon, aluminum-carbon or aluminosilicate refractory material.
As the preferable scheme of the ladle wire feeding device with double-layer air curtain protection, the invention comprises the following steps: the lower refractory material is aluminum-chromium, corundum-spinel or zirconium-carbon refractory material.
The beneficial effects of the invention are as follows:
the invention provides a steel ladle wire feeding device with double-layer air curtain protection, which has small blown slag hole area when in use, forms an inner air curtain and an outer air curtain, wherein the outer air curtain is mainly used for isolating outside air, preventing the outside air from contacting naked molten steel and melted alloy wires when wire feeding, and the inner air curtain is mainly used for isolating gas in an alloy wire channel and cooling the alloy wires, preventing melting or gasification and oxidation with air when not in furnace, and reducing the generation of pollutants; the feeding process does not produce smoke dust, so the feeding device has no pollution to the working environment and the ecological environment, can lighten the environmental protection pressure of a steel mill, and is beneficial to pushing the low-carbon green transformation process in 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 that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a ladle wire feeder protected by a double-layer air curtain of the invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic diagram of a wire feeding operation using a ladle wire feeding device protected by a double-layer air curtain according to the present invention.
Reference numerals illustrate:
the steel shell comprises a 1-alloy wire inlet, a 2-alloy wire channel, a 3-upper refractory, a 4-lower refractory, a 5-steel shell, a 6-argon control cabinet, a 7-argon pipe I, an 8-inner air curtain distribution chamber, a 9-inner air curtain nozzle, a 10-outer air curtain distribution chamber, a 11-outer air curtain nozzle, a 12-argon pipe II, a 13-alloy wire outlet, a 21-steel slag liquid level, a 22-outer air curtain, a 23-inner air curtain and a 24-alloy wire.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description will be made clearly and fully with reference to the technical solutions in the embodiments, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "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 a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a double-layer air curtain protection ladle wire feeding device which can prevent melting or gasification and oxidation with air when not entering a furnace, and reduce the generation of pollutants; when the device is used, the area of a slag hole blown out is small, an inner air curtain and an outer air curtain are formed, the outer air curtain is mainly used for isolating outside air, exposed molten steel and molten alloy wires are prevented from being contacted when the outside air is fed, the inner air curtain is mainly used for isolating gas in an alloy wire channel and cooling the alloy wires, smoke dust is not generated in the feeding process, and therefore, the device has no pollution to the working environment and the ecological environment, can lighten the environmental protection pressure of a steel mill, and is beneficial to pushing the low-carbon green transformation process of the steel industry.
A ladle wire feeding device with double-layer air curtain protection, comprising:
an alloy wire channel 2, an outer air curtain nozzle 11 and an inner air curtain nozzle 9;
the alloy wire channel 2 is positioned at the core part of the ladle wire feeding device;
the outer air curtain nozzle 11 and the inner air curtain nozzle 9 are arranged along the outer circumference of the alloy wire channel 2, and the outer air curtain nozzle 11 is further separated from the gold wire channel 2 relative to the inner air curtain nozzle 9.
The ladle wire feeding device also comprises an outer air curtain air distribution chamber 10 and an inner air curtain air distribution chamber 8;
one end of the outer air curtain air distribution chamber 10 is connected with the outer air curtain nozzle 11, and the other end is connected with the argon pipe I7;
one end of the inner air curtain air distribution chamber 8 is connected with the inner air curtain nozzle 9, and the other end is connected with the argon pipe II 12.
The argon gas pipe I7 and the argon gas pipe II 12 are connected with the argon gas control cabinet 6 to provide accurate gas quantity for the double-layer gas curtain, and the argon gas of the outer-layer gas curtain gas distribution chamber and the inner-layer gas curtain gas distribution chamber is independently controlled and transmitted through the argon gas pipe I and the argon gas pipe II.
The inner-layer air curtain nozzles 9 are made of red copper, the number of the inner-layer air curtain nozzles is 3-5, the installation direction 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 any one or any two of 3, 4 and 5; the inner air curtain nozzle is arranged in a range which is gathered relative to the central line of the alloy wire channel 2 and has an included angle of, for example, but not limited to, any one or any two of 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 air curtain nozzles 11 are made of red copper, the number of the outer air curtain nozzles is 4-8, the installation direction is expanded outwards relative to the central 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 any one or any two of the range consisting of 4, 5, 6, 7 and 8; the outer air curtain nozzle mounting direction is a range which is expanded with respect to the center line of the alloy wire channel 2 and has an included angle of, for example, but not limited to, any one or any two of 15 °, 16 °, 17 °, 18 °, 19 °, 20 °,21 °,22 °,23 °,24 °, 25 °, 26 °, 27 °, 28 °, 29 °, 30 °, 31 °, 32 °, 33 °, 34 °, 35 °.
The alloy wire channel 2 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 1, and the end near 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 sleeve of a wire feeder.
The exterior of the alloy wire channel 2 is circumferentially provided with refractory materials, the refractory materials are divided into an upper refractory material 3 and a lower refractory material 4, and the air curtain distribution chamber and the air curtain nozzles are 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 corrosion of splashed high-temperature steel slag is resisted, and the steel shell is made of low-alloy high-strength steel.
The upper refractory material 3 is made of magnesium-carbon, aluminum-carbon or aluminosilicate refractory material, and has the functions of 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 materials, and is internally provided with an air curtain distribution chamber and an air curtain nozzle besides the heat insulation function.
The technical scheme of the invention is further described below by combining specific embodiments.
As shown in fig. 1-2, a double-layer air curtain protection ladle wire feeding device 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 further comprises an outer air curtain nozzle 11 and an inner air curtain nozzle 9 which are all circumferentially arranged along the outer part of the alloy wire channel 2; and the outer air curtain nozzle 11 is further separated from the gold thread channel 2 relative to the inner air curtain nozzle 9; the alloy wire channel 2 is made of steel material, and the steel material is high-manganese wear-resistant steel; an alloy wire inlet 1 is formed at one end, far away from the air curtain nozzle, of the alloy wire channel 2, and an alloy wire outlet 13 is formed at one end, close to the air curtain nozzle, of the alloy wire channel 2; the alloy wire inlet 1 is a horn-shaped alloy wire inlet and is used for receiving an alloy wire extending out of a sleeve of a wire feeder. The exterior of the alloy wire channel 2 is circumferentially provided with refractory materials, the refractory materials are divided into an upper refractory material 3 and a lower refractory material 4, and the air curtain distribution chamber and the air curtain nozzles are 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 corrosion of splashed high-temperature steel slag is resisted, and the steel shell is made of low-alloy high-strength steel.
As shown in fig. 3, and in combination with fig. 1-2, the double-layer air curtain protected 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 air curtain air distribution chamber 10 is connected with the outer air curtain nozzle 11, and the other end is connected with the argon pipe I7; one end of the inner air curtain air distribution chamber 8 is connected with the inner air curtain nozzle 9, and the other end is connected with the argon pipe II 12. The argon gas pipe I7 and the argon gas pipe II 12 are connected with the argon gas control cabinet 6 to provide accurate gas quantity for the double-layer gas curtain, and the argon gas of the outer-layer gas curtain gas distribution chamber and the inner-layer gas curtain gas distribution chamber is independently controlled and transmitted through the argon gas pipe I and the argon gas pipe II. The inner-layer air curtain nozzles 9 are made of red copper, the number of the inner-layer air curtain nozzles is 3-5, the installation direction is gathered relative to the central line of the alloy wire channel 2, and the included angle is 5-20 degrees; the outer 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, and has the functions of 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 materials, and is internally provided with an air curtain distribution chamber and an air curtain nozzle besides the heat insulation function. When the ladle wire feeding device with double-layer air curtain protection is used, the free end of the alloy wire 24 is aligned with the alloy wire inlet 1, and the alloy wire 24 is required not to be exposed at the alloy wire outlet 13; opening the outer air curtain 22: opening an argon control cabinet 6, conveying argon to an outer air curtain air distribution chamber 10 through an argon pipe I7, and uniformly conveying the argon to each outer air curtain nozzle 11 by the outer air curtain air distribution chamber 10, wherein the slag surface is required to slightly fluctuate but not be blown open in operation; opening the inner air curtain 23, stabilizing for a period of time after the outer air curtain is opened, simultaneously conveying argon to the inner air curtain air distribution chamber 8 by the argon control cabinet 6 and the argon pipe II 12, uniformly conveying the argon to each inner air curtain nozzle 9 by the outer air curtain air distribution chamber 8, forming stable conical air flow right below the center 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, thereby reducing the environmental protection pressure of a steel mill and being beneficial to pushing the low-carbon green transformation process of the steel industry.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the content of the present invention or direct/indirect application in other related technical fields are included in the scope of the present invention.
Claims (9)
1. The ladle wire feeding device of double-deck air curtain protection, characterized by comprising:
an alloy wire channel, an outer air curtain nozzle and an inner air curtain nozzle;
the alloy wire channel is positioned at the core part of the ladle wire feeding device;
the outer air curtain nozzle and the inner air curtain nozzle are circumferentially arranged along the outer part of the alloy wire channel, and the outer air curtain nozzle is further separated from the gold wire channel relative to the inner air curtain nozzle;
the installation direction of the inner air curtain nozzle is gathered relative to the central line of the alloy wire channel, and the included angle is 5-20 degrees; the installation direction of the outer air curtain nozzle is outward expansion relative to the central line of the alloy wire channel, and the included angle is 15-35 degrees.
2. The double-layer air curtain protected ladle wire feeding device according to claim 1, wherein the ladle wire feeding device further comprises an outer air curtain air distribution chamber and an inner air curtain air distribution chamber;
one end of the outer air curtain distribution chamber is connected with the outer air curtain nozzle, and the other end of the outer air curtain distribution chamber is connected with the argon pipe I;
one end of the inner air curtain distribution chamber is connected with the inner air curtain nozzle, and the other end of the inner air curtain distribution chamber is connected with the argon pipe II;
and the argon pipe I and the argon pipe II are connected with an argon control cabinet.
3. The steel ladle wire feeding device with double-layer air curtain protection according to claim 1 or 2, wherein the inner-layer air curtain nozzles are made of red copper, and the number of the inner-layer air curtain nozzles is 3-5; the outer air curtain nozzles are made of red copper, and the number of the outer air curtain nozzles is 4-8.
4. The steel ladle wire feeding device with double-layer air curtain protection according to 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.
5. A ladle wire feeder protected by a double air curtain according to claim 1 or 2, wherein the exterior of the alloy wire passage is circumferentially arranged with refractory material, and the refractory material is divided into an upper refractory material and a lower refractory material.
6. The double-layer air curtain protected ladle wire feeding device according to claim 5, wherein the air curtain distribution chamber and the air curtain nozzle are both arranged in the lower refractory material.
7. The double-layer air curtain protection steel ladle wire feeding device according to claim 5, 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.
8. The double air curtain protected ladle wire feeder of claim 5, wherein the upper refractory material is a magnesium-carbon, aluminum-carbon or aluminosilicate refractory material.
9. The double air curtain protection ladle wire feeder of claim 5, wherein the lower refractory material is an 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 CN115161433A (en) | 2022-10-11 |
| CN115161433B true CN115161433B (en) | 2023-12-15 |
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| 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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| US4205981A (en) * | 1979-02-28 | 1980-06-03 | International Harvester Company | Method for ladle treatment of molten cast iron using sheathed magnesium wire |
| 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 |
| CN102337377A (en) * | 2011-08-23 | 2012-02-01 | 莱芜钢铁集团有限公司 | Molten steel wire feeding device and wire feeding method |
| CN202214380U (en) * | 2011-08-23 | 2012-05-09 | 莱芜钢铁集团有限公司 | Molten steel wire feeding device |
| CN202297669U (en) * | 2011-09-06 | 2012-07-04 | 钢铁研究总院 | Wire feeder guiding device for inhibiting alloy oxidation and preventing nitriding |
| CN102764868A (en) * | 2012-07-11 | 2012-11-07 | 北京科技大学 | Blowing and refining device and method used for removing tundish molten steel inclusion |
| CN203170935U (en) * | 2013-03-28 | 2013-09-04 | 鞍钢股份有限公司 | Immersion-type wire feeding pipe |
| CN104278127A (en) * | 2013-07-10 | 2015-01-14 | 北大方正集团有限公司 | Wire rod feeding method, wire rod feeding device and casting blank |
| CN103862014A (en) * | 2014-03-25 | 2014-06-18 | 莱芜钢铁集团有限公司 | Refining device and method for removing liquid steel inclusions in continuous casting tundish |
| CN203960253U (en) * | 2014-06-23 | 2014-11-26 | 辽宁科技学院 | Spreader formula line feeding rifle for a kind of steel-making |
| 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 |
| CN106825462A (en) * | 2017-01-13 | 2017-06-13 | 北京科技大学 | One kind cast steel ingot protection device and application method |
| 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 |
| CN208562446U (en) * | 2018-07-24 | 2019-03-01 | 辽宁科技学院 | A kind of efficient line feeding rifle of steel-making with deslagging function |
| WO2020020069A1 (en) * | 2018-07-24 | 2020-01-30 | 宝山钢铁股份有限公司 | Tundish |
| CN210146983U (en) * | 2019-05-28 | 2020-03-17 | 河南中原特钢装备制造有限公司 | Argon protection device for mould casting ladle nozzle |
| CN110184415A (en) * | 2019-05-29 | 2019-08-30 | 钢铁研究总院 | A kind of ladle refining Yarn feeding device and line feeding method |
| CN110453043A (en) * | 2019-09-12 | 2019-11-15 | 马鞍山钢铁股份有限公司 | A kind of top argon-blowing gun |
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|---|---|
| CN115161433A (en) | 2022-10-11 |
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