CN109609722A - A kind of converter oxygen lance with burning and two kinds of functions of oxygen blast - Google Patents
A kind of converter oxygen lance with burning and two kinds of functions of oxygen blast Download PDFInfo
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- CN109609722A CN109609722A CN201811415012.5A CN201811415012A CN109609722A CN 109609722 A CN109609722 A CN 109609722A CN 201811415012 A CN201811415012 A CN 201811415012A CN 109609722 A CN109609722 A CN 109609722A
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- steel pipe
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- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 201
- 239000001301 oxygen Substances 0.000 title claims abstract description 201
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 200
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 131
- 239000010959 steel Substances 0.000 claims abstract description 131
- 239000007921 spray Substances 0.000 claims abstract description 87
- 239000000567 combustion gas Substances 0.000 claims abstract description 44
- 239000007789 gas Substances 0.000 claims abstract description 34
- 150000001875 compounds Chemical class 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000003034 coal gas Substances 0.000 claims description 3
- 239000002283 diesel fuel Substances 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 238000009628 steelmaking Methods 0.000 abstract description 21
- 238000007664 blowing Methods 0.000 abstract description 12
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 208000021760 high fever Diseases 0.000 abstract description 9
- 230000003647 oxidation Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 238000009491 slugging Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000000498 cooling water Substances 0.000 description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 229910052742 iron Inorganic materials 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000010079 rubber tapping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000003756 stirring 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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4606—Lances or injectors
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The present invention provides a kind of converter oxygen lance with burning and two kinds of functions of oxygen blast, by interior one layer of steel pipe, interior two layers of steel pipe, interior compound steel pipe, outer layer pipe, gas jet orifice, oxygen spray orifice, forms into oxygen branch pipe, into components such as combustion gas branch pipe, water inlet pipe and return branch.When fritting preheating scrap: the partial oxidation that the combustion gas and oxygen spray orifice sprayed by gas jet orifice sprays burns in converter, generates high fever；When blowing: the main flow oxygen sprayed by oxygen spray orifice, blowing molten steel steel-making.Combustion gas and oxygen combustion generate high fever, can increase considerably steel scrap charge weight, reduce steel-making cost；The quality that furnace temperature is high, slugging is fast, the steel-making time is short, increases the yield of steel, improves steel.Through the invention, to solve traditional converter oxygen gun of the existing technology, only oxygen blast function, blowing molten steel steel-making, and the problem of cannot achieve combustion heating, provide heat source.
Description
Technical field
The invention belongs to converter steeling technology fields, and in particular to a kind of converter oxygen with burning and two kinds of functions of oxygen blast
Fire rifle.
Background technique
Oxygen top-blown converter is current steelmaking equipment most important in the world.By the way that the converter oxygen above converter is arranged in
Rifle, the oxygen blast into converter, refined molten steel are made steel.
Currently, the general converter oxygen gun in various countries is made of three layers of casing, inner layer steel pipe leads to oxygen, and oxygen passes through red copper
Spray head is blown to converter；Cooling water is entered by middle layer steel pipe, cooling oxygen rifle and spray head；Cooling water is through outer layer pipe and middle layer
Circumferential weld between steel pipe returns.
This oxygen rifle only has oxygen blast function.Chemistry is carried out by elements such as carbon, silicon, manganese, phosphorus, sulphur and iron in oxygen and molten iron
Reaction, heat release is made steel, and other than the interior energy of molten iron, cannot bring external heat into.
With the development of the industrialization of the country, the steel scrap in society is more and more, and the raw material of pneumatic steelmaking is by molten iron and steel scrap
Composition, molten iron and steel scrap be proportionally added into converter, when tapping, reaches the tapping temperature of requirement.A large amount of steel scraps are added toward converter,
Liquid steel temperature will reduce, and tapping temperature requirement is not achieved.
Summary of the invention
For the deficiency of existing converter oxygen gun functionally, the present invention provides a kind of with combustion gas and oxygen combustion fever and oxygen
The pneumatic steelmaking oxygen lance of air-blowing steel-making two kinds of functions of water.
In order to solve the above technical problems, the present invention provides a kind of converter oxygen lance with burning and two kinds of functions of oxygen blast,
Including oxygen lance gun body and oxygen lance spray head, oxygen lance spray head is fixed on oxygen lance gun body front end, and the oxygen lance gun body is more
Layer cannula structure is disposed with interior one layer of steel pipe, interior two layers of steel pipe, interior compound steel pipe and outer layer pipe, institute from inside to outside
Circumferential weld and interior two layers of steel pipe and interior compound steel pipe in stating between the inner cavity of one layer of steel pipe, interior one layer of steel pipe and interior two layers of steel pipe
Between circumferential weld form three channels, one of channel is into oxygen channel, another channel is blast tube, there are also one
A channel is intake tunnel, and the channel that the circumferential weld between interior compound steel pipe and outer layer pipe is formed is backwater channel, oxygen lance spray
Head in setting oxygen spray orifice and gas jet orifice, intake tunnel and return water into oxygen channel, blast tube head outlet corresponding position respectively
It is connected between channel by oxygen lance spray head.
The first branch pipe being connected to the inner cavity of interior one layer of steel pipe and interior one layer of steel are disposed in the oxygen lance gun body
Manage the of the circumferential weld between the second branch pipe and interior two layers of steel pipe and interior compound steel pipe of the circumferential weld connection between interior two layers of steel pipe
The return branch that three branch pipes and the circumferential weld between interior compound steel pipe and outer layer pipe are connected to, the first branch pipe, the second branch pipe and
In third branch pipe three, one of them be into oxygen manifold, another be into combustion gas branch pipe, there are one being water inlet pipe, and
It is described to be connected into oxygen manifold with into oxygen channel, it is connected into combustion gas branch pipe with blast tube, water inlet pipe and intake tunnel connect
Logical, return branch is connected to backwater channel.
It is combustion that the inner cavity of one layer of steel pipe, which is the circumferential weld into oxygen channel, between interior one layer of steel pipe and interior two layers of steel pipe, in described
Gas channel, the circumferential weld between interior two layers of steel pipe and interior compound steel pipe is intake tunnel, and first branch pipe is into oxygen manifold the
Two branch pipes are into combustion gas branch pipe, and third branch pipe is water inlet pipe.
Including the oxygen spray orifice, outside, gas jet orifice is looped around around oxygen spray orifice gas jet orifice；Or gas jet orifice
Inside, outside, oxygen spray orifice is looped around around gas jet orifice oxygen spray orifice.
The gas jet orifice is identical with the number of oxygen spray orifice or is in certain multiple, be three holes or four holes or five holes,
Or six hole certain multiple.
Incendivity medium is used in the blast tube of the oxygen lance.
The incendivity medium used in the blast tube of the oxygen lance is coal gas, natural gas, oil liquefied gas or diesel oil.
Bring of the present invention the utility model has the advantages that converter oxygen lance provided by the invention, have combustion gas and oxygen combustion generate heat and
Two kinds of functions of oxygen blowing molten steel, when fritting preheating scrap: the part that the combustion gas and oxygen spray orifice sprayed by gas jet orifice sprays
Oxygen burns in converter, generates high fever；When blowing: the main flow oxygen sprayed by oxygen spray orifice, blowing molten steel steel-making.Combustion
Gas and oxygen combustion generate high fever, can increase considerably steel scrap charge weight, reduce steel-making cost；Furnace temperature is high, slugging is fast, steel-making
The quality that time is short, increases the yield of steel, improves steel.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of converter oxygen lance of the invention.
Wherein, one layer of steel pipe in 1-, two layers of steel pipe in 2-, compound steel pipe, 4- outer layer pipe, 5- spray head, 8- first in 3-
Branch pipe, the second branch pipe of 9-, 10- third branch pipe, 11- return branch.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with drawings and the specific embodiments, to this
Invention is described in further detail.
Fig. 1 is the structural schematic diagram of converter oxygen lance of the invention.
As shown in Figure 1, the present invention provides a kind of converter oxygen lance with burning and two kinds of functions of oxygen blast, including oxygen lance
Gun body and oxygen lance spray head 5, oxygen lance spray head are fixed on oxygen lance gun body front end, and the oxygen lance gun body is multilayer sleeve knot
Structure is disposed with interior one layer of steel pipe 1, interior two layers of steel pipe 2, interior compound steel pipe 3 and outer layer pipe 4 from inside to outside, described interior
Between circumferential weld and interior two layers of steel pipe and interior compound steel pipe between the inner cavity of one layer of steel pipe, interior one layer of steel pipe and interior two layers of steel pipe
Circumferential weld form three channels, one of channel is into oxygen channel, another channel is blast tube, and there are one logical
Road is intake tunnel, and the channel that circumferential weld between interior compound steel pipe and outer layer pipe is formed is backwater channel, oxygen lance spray head 5 in
Oxygen spray orifice and gas jet orifice, intake tunnel and backwater channel are set respectively into oxygen channel, blast tube head outlet corresponding position
Between be connected to by oxygen lance spray head.Including oxygen spray orifice, gas jet orifice is outside；Or including gas jet orifice, oxygen spray orifice exists
Outside；The two number is identical or is in certain multiple.
The first branch pipe 8 being connected to the inner cavity of interior one layer of steel pipe 1 and interior one layer of steel pipe are disposed in oxygen lance gun body
Circumferential weld between the second branch pipe 9 and interior two layers of steel pipe 2 and interior compound steel pipe 3 of circumferential weld connection between 1 and interior two layers of steel pipe 2
Third branch pipe 10 and the return branch 11 that is connected to of the circumferential weld between interior compound steel pipe 3 and outer layer pipe 4, the first branch pipe 8,
In 10 three of second branch pipe 9 and third branch pipe, one of them be into oxygen manifold, another be into combustion gas branch pipe, there are one
For water inlet pipe, and it is described be connected into oxygen manifold with into oxygen channel, be connected into combustion gas branch pipe with blast tube, water inlet pipe
It is connected to intake tunnel, return branch is connected to backwater channel.
1 use process for illustrating converter oxygen lance of the present invention with reference to the accompanying drawing:
Oxygen, through oxygen channel, is sprayed by entering into oxygen manifold by oxygen spray orifice.Combustion gas by into combustion gas branch pipe enter,
Through blast tube, sprayed by gas jet orifice.Cooling water is entered by water inlet pipe, through intake tunnel, spray head is bypassed, through backwater channel
It returns, is flowed out by return branch 11.The oxygen spray orifice is identical with gas jet orifice number or is in certain multiple, number three
The certain multiple in hole or four holes or five holes or six holes.Combustion gas is sprayed by gas jet orifice and oxygen from oxygen spray orifice simultaneously.Oxygen combustion
The incendivity medium used in the blast tube of rifle be coal gas, natural gas, oil liquefied gas or diesel oil, can be according to actual production feelings
Condition adjustment.
Embodiment 1
First branch pipe 8 is water inlet pipe to be into combustion gas branch pipe, third branch pipe 10 into oxygen manifold, the second branch pipe 9.Interior one
The inner cavity of layer steel pipe 1 is into oxygen channel, and oxygen, through thus channel, is reached in the spray head of oxygen rifle front end by entering into oxygen manifold
Oxygen spray orifice, be divided into it is porous, spray into converter in.Circumferential weld between interior one layer of steel pipe 1 and interior two layers of steel pipe 2 is blast tube, combustion
Gas is divided into porous by reaching the gas jet orifice in the spray head of oxygen rifle front end through thus channel into combustion gas branch pipe, sprays into converter.In advance
When molten preheating scrap: oxygen and combustion gas spray into converter together, the combustion gas sprayed from gas jet orifice, the portion sprayed with oxygen spray orifice
Divide the burning of both oxygen, generates high fever, heating or melting waste steel, while heating molten steel and clinker.When blowing: being sprayed from oxygen spray orifice
Mainstream oxygen out also with ultrasonic oxygen flow stock, is blown molten bath, completes steel making working procedure.Interior two layers of steel pipe 2 and interior compound steel pipe 3
Between circumferential weld be intake tunnel, cooling water is entered by water inlet pipe, and the spray head of oxygen rifle front end, cooling spray are reached through thus channel
After head, cooling water is returned along by outer layer pipe, and the channel that the circumferential weld between interior compound steel pipe 3 and outer layer pipe 4 is formed is
The backwater channel of cooling water, cooling water also cool entire oxygen lance gun body, cooling water is by return branch during return
11 discharges.
Embodiment 2
First branch pipe 8 is water inlet pipe to be into oxygen manifold, third branch pipe 10 into combustion gas branch pipe, the second branch pipe 9.
The inner cavity of interior one layer of steel pipe 1 is blast tube, and combustion gas is by reaching the spray of oxygen rifle front end through thus channel into combustion gas branch pipe
Head in gas jet orifice, be divided into it is porous, spray into converter in.Circumferential weld between interior one layer of steel pipe 1 and interior two layers of steel pipe 2 is into oxygen
Channel, oxygen, through thus channel, reach oxygen spray orifice in the spray head of oxygen rifle front end by entering into oxygen manifold, are divided into porous, penetrating
In converter.When fritting preheating scrap: oxygen and combustion gas spray into converter together, and the combustion gas sprayed from gas jet orifice is sprayed with oxygen
The burning of both partial oxidations that hole sprays generates high fever, heating or melting waste steel, while heating molten steel and clinker.When blowing: from
The mainstream oxygen that oxygen spray orifice sprays also with ultrasonic oxygen flow stock, is blown molten bath, completes steel making working procedure.2 He of interior two layers of steel pipe
Circumferential weld between interior compound steel pipe 3 is intake tunnel, and cooling water is entered by water inlet pipe, reaches oxygen rifle front end through thus channel
Spray head, after cooling spray, cooling water is returned along by outer layer pipe, and the circumferential weld between interior compound steel pipe 3 and outer layer pipe 4 is formed
Channel be cooling water backwater channel, cooling water also cools entire oxygen lance gun body, cooling water during return
It is discharged by return branch 11.
Embodiment 3
First branch pipe 8 is water inlet pipe, the second branch pipe 9 be into oxygen manifold, third branch pipe 10 is into combustion gas branch pipe.Interior one
Circumferential weld between layer steel pipe 1 and interior two layers of steel pipe 2 is into oxygen channel, and oxygen, through thus channel, is arrived by entering into oxygen manifold
Up to oxygen spray orifice in the spray head of oxygen rifle front end, it is divided into porous, sprays into converter.Ring between interior two layers of steel pipe 2 and interior compound steel pipe 3
Seam is blast tube, and combustion gas is by reaching the gas jet orifice in the spray head of oxygen rifle front end through thus channel, being divided into more into combustion gas branch pipe
Hole sprays into converter.When fritting preheating scrap: oxygen and combustion gas spray into converter together, the combustion gas sprayed from gas jet orifice, with
The burning of both partial oxidations that oxygen spray orifice sprays generates high fever, heating or melting waste steel, while heating molten steel and clinker.It blows
When refining: the mainstream oxygen sprayed from oxygen spray orifice also with ultrasonic oxygen flow stock, is blown molten bath, completes steel making working procedure.Interior one layer
The inner cavity of steel pipe 1 is intake tunnel, and cooling water is entered by water inlet pipe, and the spray head of oxygen rifle front end is reached through thus channel, cooling
After spray head, cooling water is returned along by outer layer pipe, and the channel that the circumferential weld between interior compound steel pipe 3 and outer layer pipe 4 is formed is
For the backwater channel of cooling water, cooling water also cools entire oxygen lance gun body, cooling water is by return water branch during return
Pipe 11 is discharged.
Embodiment 4
First branch pipe 8 is water inlet pipe, the second branch pipe 9 be into combustion gas branch pipe, third branch pipe 10 is into oxygen manifold.Interior one
Circumferential weld between layer steel pipe 1 and interior two layers of steel pipe 2 is blast tube, and combustion gas is by reaching oxygen rifle through thus channel into combustion gas branch pipe
Gas jet orifice in the spray head of front end, be divided into it is porous, spray into converter in.Circumferential weld between interior two layers of steel pipe 2 and interior compound steel pipe 3 is
Into oxygen channel, oxygen, through thus channel, is reached oxygen spray orifice in the spray head of oxygen rifle front end, is divided into more by entering into oxygen manifold
Hole sprays into converter.When fritting preheating scrap: oxygen and combustion gas spray into converter together, the combustion gas sprayed from gas jet orifice, with
The burning of both partial oxidations that oxygen spray orifice sprays generates high fever, heating or melting waste steel, while heating molten steel and clinker.It blows
When refining: the mainstream oxygen sprayed from oxygen spray orifice also with ultrasonic oxygen flow stock, is blown molten bath, completes steel making working procedure.Interior one layer
The inner cavity of steel pipe 1 is intake tunnel, and cooling water is entered by water inlet pipe, and the spray head of oxygen rifle front end is reached through thus channel, cooling
After spray head, cooling water is returned along by outer layer pipe, and the channel that the circumferential weld between interior compound steel pipe 3 and outer layer pipe 4 is formed is
For the backwater channel of cooling water, cooling water also cools entire oxygen lance gun body, cooling water is by return water branch during return
Pipe 11 is discharged.
In conclusion converter oxygen lance provided by the invention, has combustion gas and oxygen combustion generates heat and oxygen blowing molten steel
Two kinds of functions, when fritting preheating scrap: the partial oxidation that the combustion gas and oxygen spray orifice sprayed by gas jet orifice sprays, in converter
Burning generates high fever；When blowing: the main flow oxygen sprayed by oxygen spray orifice, blowing molten steel steel-making.Gas jet orifice and oxygen spray
Number of perforations is identical or is in certain multiple, there is the certain multiple in three holes, four holes, five holes, six holes.Combustion gas and oxygen combustion generate high
Heat can increase considerably steel scrap charge weight, reduce steel-making cost；Furnace temperature is high, slugging is fast, the steel-making time is short, increases the production of steel
Amount, the quality for improving steel.
Furthermore, it is understood that bring of the present invention is the utility model has the advantages that (1) oxygen and fuel gas buring form thermal-flame, and issue
A large amount of heat heats and melts a large amount of steel scrap.It is made steel using common converter oxygen rifle, in the furnace charge of converter, the ratio of steel scrap
Usually 15% or so, remaining is molten iron, improves steel scrap ratio, then shortage of heat.There is burning and oxygen blast using of the invention
The converter oxygen lance of two kinds of functions, due to having brought external source into, scrap ratio can be increased substantially, and reach 40% or more, very
To 100% steel scrap, can also make steel.Due to scrap ratio molten iron economy and environmental protection, the especially insufficient iron company of molten iron, increase
Add steel scrap charge weight, pneumatic steelmaking cost, remarkable in economical benefits can be reduced.
(2) slag melting fast due to flame temperature height, the steel-making time can be shortened, increase output of steel.
(3) since slugging is fast, slugging is good, is conducive to remove impurity in steel, improves the quality of steel.
(4) due to that when liquid steel temperature is low, can be rapidly heated with heating function, be conducive to going on smoothly for steel-making.
(5) combustion gas sprays together with oxygen, and flame temperature is high, and oxygen stream stock is rigidly good, strong to the penetration capacity in molten bath,
Stirring capacity is strong, and being conducive to molten steel in converter, temperature is uniform up and down.
(6) oxygen is strong to the penetration capacity in molten bath, then splash is small, is conducive to the lining durability for improving converter.
The above description is only an embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.
Claims (7)
1. a kind of converter oxygen lance with burning and two kinds of functions of oxygen blast, including oxygen lance gun body and oxygen lance spray head (5), oxygen
Combustion gun sprayer is fixed on oxygen lance gun body front end, which is characterized in that the oxygen lance gun body is multilayer sleeve structure, from inside to outside
One layer of steel pipe (1), interior two layers of steel pipe (2), interior compound steel pipe (3) and outer layer pipe (4) in being disposed with, it is described one layer interior
The ring between circumferential weld and interior two layers of steel pipe and interior compound steel pipe between the inner cavity of steel pipe, interior one layer of steel pipe and interior two layers of steel pipe
Slit is at three channels, and one of channel is into oxygen channel, another channel is blast tube, is there are one channel
Intake tunnel, the channel that circumferential weld between interior compound steel pipe and outer layer pipe is formed are backwater channel, oxygen lance spray head (5) in into
Oxygen channel, blast tube head outlet corresponding position set oxygen spray orifice and gas jet orifice respectively, intake tunnel and backwater channel it
Between be connected to by oxygen lance spray head.
2. the converter oxygen lance with burning and two kinds of functions of oxygen blast as described in claim 1, which is characterized in that the oxygen combustion
Be disposed in rifle gun body the first branch pipe (8) being connected to the inner cavity of interior one layer of steel pipe (1), with interior one layer of steel pipe (1) and interior
Ring between the second branch pipe (9) and interior two layers of steel pipe (2) and interior compound steel pipe (3) of circumferential weld connection between two layers of steel pipe (2)
The return branch (11) that the third branch pipe (10) of seam and the circumferential weld between interior compound steel pipe (3) and outer layer pipe (4) are connected to,
In first branch pipe (8), the second branch pipe (9) and third branch pipe (10) three, one of them be into oxygen manifold, another be into combustion
Gas branch pipe, there are one being water inlet pipe, and it is described be connected into oxygen manifold with into oxygen channel, lead into combustion gas branch pipe and combustion gas
Road connection, water inlet pipe are connected to intake tunnel, and return branch is connected to backwater channel.
3. the converter oxygen lance with burning and two kinds of functions of oxygen blast as claimed in claim 2, which is characterized in that one in described
The inner cavity of layer steel pipe is that the circumferential weld into oxygen channel, between interior one layer of steel pipe and interior two layers of steel pipe is blast tube, interior two layers of steel
Circumferential weld between pipe and interior compound steel pipe is intake tunnel, and first branch pipe (8) is into oxygen manifold, and the second branch pipe (9) is
Into combustion gas branch pipe, third branch pipe (10) is water inlet pipe.
4. such as the converter oxygen lance with burning and two kinds of functions of oxygen blast of any of claims 1-2, feature exists
In including the oxygen spray orifice, outside, gas jet orifice is looped around around oxygen spray orifice gas jet orifice；Or including gas jet orifice,
Outside, oxygen spray orifice is looped around around gas jet orifice oxygen spray orifice.
5. the converter oxygen lance with burning and two kinds of functions of oxygen blast as claimed in claim 4, which is characterized in that the combustion
Gas spurt is identical with the number of oxygen spray orifice or is in certain multiple, is the certain multiple in three holes or four holes or five holes or six holes.
6. the converter oxygen lance with burning and two kinds of functions of oxygen blast as described in claim 1, which is characterized in that the oxygen combustion
Incendivity medium is used in the blast tube of rifle.
7. the converter oxygen lance with burning and two kinds of functions of oxygen blast as claimed in claim 6, which is characterized in that the oxygen combustion
The incendivity medium used in the blast tube of rifle is coal gas, natural gas, oil liquefied gas or diesel oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811415012.5A CN109609722A (en) | 2018-11-26 | 2018-11-26 | A kind of converter oxygen lance with burning and two kinds of functions of oxygen blast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811415012.5A CN109609722A (en) | 2018-11-26 | 2018-11-26 | A kind of converter oxygen lance with burning and two kinds of functions of oxygen blast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109609722A true CN109609722A (en) | 2019-04-12 |
Family
ID=66003518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811415012.5A Pending CN109609722A (en) | 2018-11-26 | 2018-11-26 | A kind of converter oxygen lance with burning and two kinds of functions of oxygen blast |
Country Status (1)
| Country | Link |
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| CN (1) | CN109609722A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN114015830A (en) * | 2021-12-13 | 2022-02-08 | 江苏必瑞驰科技有限公司 | Converter oxygen combustion gun for pre-melting and preheating scrap steel and use method |
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| CN111378809A (en) * | 2020-05-06 | 2020-07-07 | 江苏必瑞驰科技有限公司 | Equipment and method for electric arc furnace steelmaking by using oxygen combustion lance |
| CN114015830A (en) * | 2021-12-13 | 2022-02-08 | 江苏必瑞驰科技有限公司 | Converter oxygen combustion gun for pre-melting and preheating scrap steel and use method |
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Application publication date: 20190412 |