CN102334003A - Oxygen blowing lance cooled by protective gas - Google Patents
Oxygen blowing lance cooled by protective gas Download PDFInfo
- Publication number
- CN102334003A CN102334003A CN2009801509548A CN200980150954A CN102334003A CN 102334003 A CN102334003 A CN 102334003A CN 2009801509548 A CN2009801509548 A CN 2009801509548A CN 200980150954 A CN200980150954 A CN 200980150954A CN 102334003 A CN102334003 A CN 102334003A
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- China
- Prior art keywords
- oxygen
- blowing gun
- protection device
- technology channel
- protective gas
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- 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
-
- 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
- C21C5/4613—Refractory coated lances; Immersion lances
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/16—Introducing a fluid jet or current into the charge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/18—Charging particulate material using a fluid carrier
-
- 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
- C21C2005/4626—Means for cooling, e.g. by gases, fluids or liquids
-
- 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
- C21C5/52—Manufacture of steel in electric furnaces
- C21C2005/5288—Measuring or sampling devices
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- 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
- C21C5/4673—Measuring and sampling devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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 present invention relates to an oxygen blowing lance (1) that is cooled by protective gas at least in a section on the lance head side and that comprises a central conduit (2), and next to the conduit at least two oxygen lines (3), which are each provided with at least one outlet nozzle (7) on the lance head side, wherein the longitudinal axes of the oxygen lines are different from the longitudinal axis of the conduit, a thermal protection device (4) that is made of fireproof material and surrounds the conduit and the oxygen lines and that forms the outer skin of the oxygen blowing lance (1) at least in the section on the lance head side cooled by protective gas, wherein at least in the section on the lance head side cooled by protective gas the intermediate spaces between the oxygen lines (3) having outlet nozzles (7), the conduit (2), and the thermal protection device (4); are connected to a protective gas feed device, and the thermal protection device (4) comprises at least one layer of fireproof material. The oxygen lance (1) comprises at least one sensor (9, 10, 12) for determining measured variables, wherein the sensor is attached to at least one of the locations - thermal protection device (4), - conduit (2), - outlet nozzles (7) in such a way that the sensor can determine measured variables in a spatial region forming an extension of the conduit on the lance head side.
Description
The present invention relates to a kind of oxygen-blowing gun that in rifle cephalic region section, cools off at least by protective gas.
When the oxygen treatments applied molten steel that is used to from oxygen-blowing gun, the quality of the steel of producing in order to control and need to confirm the composition of molten steel.This can realize through the sample in the analysis molten steel and through the sample of analyzing the exhaust that when molten steel is handled, produces.Usually, the sample of molten steel extracts through the sublance that is different from oxygen-blowing gun.In addition about how controlling the information processed of utilizing oxygen to carry out liquid steel temperature is provided.
The penetration depth that oxygen gets into molten steel has influenced the elapsed time that is used to handle fatefully.According to the interruption situation of Oxygen Flow when the outlet nozzle from oxygen-blowing gun sprays, penetration depth and then elapsed time change.The change of said interruption situation aspect is for example by the variation of wearing and tearing, oxygen-blowing gun and the molten steel distance of outlet nozzle and be present in the variation of the pressure in the oxygen-blowing gun zone and cause.About for example to the information of the parameter of the distance of molten steel, liquid steel temperature, pressure for molten steel is handled the measurement in the focal spot district, being virtuous especially in the application facet that is used to control processing procedure at it.In the water-cooled oxygen-blowing gun, be difficult to obtain these parameters because be used for the sensor of these parameters must pass through oxygen-blowing gun, the coolant jacket of rifle head especially.Thus, increased the danger that coolant jacket leaks.In addition, because on by water-cooled rifle owing to the incrustation that is made up of splash slag and the molten steel that splashes that freeze appears in the strong cooling of the shell of oxygen-blowing gun, so the sensor that is contained in the shell bears the danger that is covered by incrustation.
The water-cooled of oxygen-blowing gun is to be used to prevent the common method of wearing and tearing.Disadvantageously at this be, the weight of oxygen-blowing gun in use significantly increases because of water-cooled portion, and this needs correspondingly to confirm the bracing or strutting arrangement of size and makes oxygen-blowing gun become more clumsy on the whole.In addition, the relevant with it cold water of dangerous and existence that exists coolant jacket to leak gets into the danger among the molten steel nocuously.
Other cooling agent of known usefulness replaces water-cooled but.DE10253463 proposes a kind of by gas-cooled spray gun.In DE10253463, do not handle following problems, confirm that promptly measurement parameter in the focal spot district is to control for utilizing oxygen to handle molten steel.
The purpose of this invention is to provide a kind of oxygen-blowing gun, utilize said oxygen-blowing gun when handling molten steel, not having in focal spot district (Brennfleck), to measure measurement parameter at least under the situation of the danger that water(-cooling) jacket leaks through sensor.
According to the present invention; Said purpose is realized by the oxygen-blowing gun of protective gas cooling in rifle cephalic region section through a kind of at least; The thermel protection device of processing by refractory material that said oxygen-blowing gun has the center technology channel and has at least two, preferred three to six oxygen pipelines on said technology channel next door and surround said technology channel and oxygen pipeline; Said oxygen pipeline is equipped with at least one outlet nozzle respectively in rifle head side; The longitudinal axis of wherein said oxygen pipeline is different from the longitudinal axis of said technology channel, and said thermel protection device constitutes the shell of said oxygen-blowing gun at least in the portion's section by the protective gas cooling of rifle head side
Wherein at least in the portion's section by the protective gas cooling of rifle head side; Medial compartment having between the said oxygen pipeline of outlet nozzle, said technology channel and the said thermel protection device is connected with a kind of protective gas feedway; And said thermel protection device comprises the refractory material of one deck, preferred multilayer at least
Wherein said oxygen-blowing gun comprises the sensor that at least one is used for confirming measurement parameter, and wherein said sensor so is placed at least one in the following position,
-thermel protection device,
-technology channel,
-outlet nozzle,
Make said sensor in rifle head side has constituted the space section of an extension of said technology channel, to record measurement parameter a kind of.
Oxygen-blowing gun according to the present invention has the center technology channel, and the technology channel at said center and many, promptly at least two oxygen pipelines are adjacent.Preferably be provided with three to six oxygen pipelines.The longitudinal axis of this oxygen pipeline does not coincide with the longitudinal axis of the technology channel at center, and in other words, it is arranged on by the technology channel side.This oxygen pipeline is equipped with at least one outlet nozzle respectively in rifle head side; Yet one or more oxygen pipeline also can be equipped with a plurality of outlet nozzles.
Compare with oxygen-blowing gun with unique oxygen pipeline, owing to be provided with many oxygen pipelines, thus simplified the control that oxygen is carried, because can irrespectively control each other to each oxygen pipeline.Therefore,, can in the unit interval, carry the oxygen of different amounts, and the different pressures of the oxygen carried is respectively regulated through different oxygen pipelines.Therefore, can exert an influence to the motion of molten steel and the motion that is positioned at the slag on the molten steel.In addition, can be adjusted in the oxygen partial pressure in the gas compartment when adopting a unique oxygen pipeline better.
When handling molten steel, oxygen penetrates in the molten steel in so-called focal spot district.Open through the slag extruding that oxygen jet will be present on the molten steel at this in case of necessity.Said focal spot district be positioned on the extended line of the longitudinal axis of oxygen-blowing gun oxygen-blowing gun below.Because the center in oxygen-blowing gun between oxygen pipeline is provided with the technology channel at center, so the focal spot district is arranged in the space section that constitutes this technology channel extension.By the probe that can be determined at the measurement parameter in the space section that rifle head side constitutes the technology channel extension, can record measurement parameter from the focal spot district, also claim parameter.Particularly advantageous at this is to open because the slag that the Oxygen Flow of passing through to be blown in case of necessity will exist on molten steel pushes, so can see molten steel.Compare thus, with when using following sensor---this sensor alignment molten steel surface possibly just can be recorded the measurement parameter relevant better by the slag region covered with molten steel.At this, said sensor is placed at least one position in the following position,
-thermel protection device,
-technology channel,
-outlet nozzle.
Be provided with under the situation of a plurality of sensors, a sensor or a plurality of sensors also can be set on a plurality of or all positions.
Because in the portion section of rifle head side by the protective gas cooling of oxygen-blowing gun, do not have water-cooled portion (Wasserk ü hlung) at least, so do not exist the coolant jacket that is watered that the danger of leaking takes place in the dangerous portion's section of greatest wear bearing of oxygen-blowing gun at least.Therefore, these sensors can be placed in this oxygen-blowing gun by in any position in the protective gas cooled zones, and needn't worry that water-cooled portion leaks on such position.Therefore, these sensors can accurately be installed on these positions, on these positions, can obtain very virtuous measurement data.For example, be very important about information at the air pressure at outlet nozzle place.Advantageously, a plurality of sensors are installed also on said oxygen-blowing gun, said sensor can record measurement data on the said next door that has constituted the space section of said technology channel extension in rifle head side.
Equally; Because omitted the rifle head side of oxygen-blowing gun by the water-cooled portion in portion's section of protective gas cooling; So the danger that the shell of oxygen-blowing gun or sensor are formed a scab because of splash slag or the molten steel that splashes that solidify has just reduced, and is cooled because the shell is there compared not too consumingly with water cooled housing.
At least in portion's section of rifle head side, cool off according to oxygen-blowing gun of the present invention by protective gas.This oxygen-blowing gun also can fully be cooled off by protective gas, in other words, does not have water-cooled good.If oxygen-blowing gun is cooled off by protective gas fully, then the Duan Youshui of portion that is not cooled off by protective gas of oxygen-blowing gun cools off.At least portion's section of the rifle head side of oxygen-blowing gun is cooled off by protective gas.At this, portion's section of rifle head side is interpreted as such portion's section, and this section comprises the rifle head, also comprises the end of the rifle head side of oxygen-blowing gun in other words.At least 0.25% of the longitudinal extension part of oxygen-blowing gun is cooled off by protective gas.At this, said longitudinal extension part is interpreted as the extension that is passed into the position the oxygen-blowing gun from the end of the rifle head side of oxygen-blowing gun to oxygen.
Following situation is preferred; Promptly; Bigger portion's section is cooled off by protective gas, for example longitudinal extension part until 0.5%, until 1%, until 2%, until 4%, until 8%, until 10%, until 20%, until 30%, until 40%, until 50%, until 60%, until 70%, until 80% or until 90%.By the Duan Yueda of portion of protective gas cooling, oxygen-blowing gun according to the present invention is compared just light more with the water-cooled oxygen-blowing gun.Particularly preferably be the constituting of longitudinal extension part until 100% mode with protective gas cooling.
In above-mentioned scope, comprise the upper limit value simultaneously.The end that always comprises the rifle head side of oxygen-blowing gun by portion's section of protective gas cooling.Along with the ratio of the longitudinal extension part of oxygen-blowing gun increases gradually, always further move towards the direction of the oxygen pipeline of oxygen-blowing gun by the end of the oxygen pipeline in being passed into oxygen-blowing gun of portion's section of protective gas cooling.
When the longitudinal extension part of oxygen-blowing gun for example was 25m, the for example last at least 6.25cm of oxygen-blowing gun was cooled off by protective gas, and this constitutes 0.25% of said longitudinal extension part.
If oxygen-blowing gun is not cooled off by protective gas fully, then the Duan Youshui of portion that is not cooled off by protective gas of oxygen-blowing gun cools off.At this, water-cooled portion that kind as be known in the art is designed to the inlet pipeline said oxygen-blowing gun of jacket, that have feeding and the passage of the outlet pipeline of drawing.
The thermel protection device that technology channel and oxygen pipeline are longitudinally processed by refractory material in the portion's section by the protective gas cooling of the rifle head side of oxygen-blowing gun at least surrounds, and this thermel protection device constitutes the shell of oxygen-blowing gun at least in the portion's section by the protective gas cooling of rifle head side.At this, thermel protection device comprises one deck refractory material at least.Preferably, thermel protection device comprises multiple layer refractory, because this causes the better wear resistance ability.These layers can be processed by same or different refractory material.
Refractory material is understood as such material, has high mechanical strength, shape stability, wearability, corrosion resistance under the condition that promptly this material exists when handling the raw steel molten steel.These conditions are characterized by splashing of 20 ℃ to 2000 ℃ temperature, splashing from the acid slag to the basic slag, liquid metal.
Refractory material for example is:
-silicate ceramics, for example talcum, cordierite and mullite,
-be the oxide ceramics of one-component ceramic formula, for example aluminium oxide, magnesia, zirconium dioxide, partially stabilized zirconium dioxide and completely stable zirconium dioxide, titanium dioxide,
-be the oxide ceramics that many components are form, aluminium titanates for example,
-disperse pottery, like the aluminium oxide of strengthening with zirconium dioxide,
-oxide ceramics, like spinelle,
-non-oxide ceramics, non-oxide ceramics comprise the ceramic material based on the compound of boron, carbon, nitrogen and silicon.Preferred non-oxide ceramics is carborundum, silicon nitride, aluminium nitride, boron carbide and boron nitride.
-fiber ceramics composite, for example metal base composite, C/C, C/SiC, SiC/SiC and Al
2O
3/ Al
2O
3, Al
2O
3/ ZrO, Al
2O
3/ SiO
2
Refractory material is graphite or boron nitride also.If shell is covered by the protection gas hood, then there is not the danger of oxidation under the condition that graphite or boron nitride exist when handling molten steel when handling molten steel.
Medial compartment having between the oxygen pipeline of outlet nozzle, technology channel and the thermel protection device is connected at the Duan Zhongyu of the portion protective gas feedway by the protective gas cooling of oxygen-blowing gun at least.Any gas that under the condition that with the oxygen treatments applied molten steel time, exists is inertia can be considered as protective gas.Preferred nitrogen or the argon gas of adopting.
The protective gas feedway for example is the pipeline that this medial compartment is connected with the protective gas reservoir, in this pipeline, is provided with the device that is used to regulate air-flow.In operation during oxygen-blowing gun, protective gas this medial compartment of flowing through is in this heat radiation and cool off oxygen-blowing gun thus.Prevent the wearing and tearing of passing through the protective gas environmental oxidation of oxygen-blowing gun parts in addition.In addition, protective gas prevent oxygen-blowing gun by protective gas around part can not react like dust or gas in the splash slag or the molten steel that splashes, the gas compartment above molten steel with environment.In addition, through the flowing protective gas environment, disturbed hot gas to arrive the heat transmission of oxygen-blowing gun through convection current from surrounding environment.
The measurement data preferred source is from following group:
-temperature,
-gas pressure,
The solid of-oxygen-blowing gun to slag and/or molten steel and/or the distance of liquid level,
-spectroscopic data.
This temperature for example can be measured in the following manner:
-measure with NTC or PTC resistance,
-use with the constant current supply of temperature correlation and measure,
-measure with the thermocouple element,
-measure with the similar temperature sensor of frequency,
-with radiation pyrometer for example line sweep appearance, infrared camera, infrared rays survey system measure,
-acoustics gas temperature measuring technology.
The temperature of molten steel provides the information of the state of handling about molten steel, and it can be used to control the processing that utilizes oxygen to carry out.
Said gas pressure for example can be measured with barometer or pressure gauge.The understanding of air pressure allowed infer oxygen in the interruption situation when outlet nozzle flows out, this can be used to the penetration depth of oxygen is controlled.
The solid of oxygen-blowing gun to slag or molten steel and/or the distance of liquid level for example can be measured by following manner:
-laser triangulation,
-transit time method, laser radar for example,
-interferometer work system, laser interferometer for example,
-directed microwave,
-magneto strictive sensor,
-ultrasonic wave.
The measurement that the distance of the slag that oxygen-blowing gun is existed apart from liquid steel level is in other words in case of necessity carried out can be used to control for the penetration depth of oxygen, and and then controls for the molten steel processing time.At this, the control that the penetration depth of oxygen is carried out for example can realize through moving up and down of oxygen-blowing gun.Through measuring distance, can at any time follow the distance of oxygen-blowing gun and liquid level, wherein less keep oxygen-blowing gun to form a scab with the slag that splashes because of the metal that splashes.In addition, can avoid oxygen-blowing gun for example to be in the infringement that the still unfused waste part in the molten steel receives to the measurement of carrying out to the distance of solid because of contact.
Spectroscopic data for example can be measured through following manner:
-emission spectroanalysis for example utilizes discharge plasma, laser induced plasma or laser ablation and discharge plasma,
-laser induced plasma spectrometry duplicates,
Progress about the spectroscopic data deducibility of molten steel composition tapping water treatment.
Preferably, can in technology channel, pack into and be used to obtain the device of steel appearance and/or gas appearance.
This device for example can comprise vacuum glass that is fixed on the metallic cable or the pipeline section that can from technology channel, roll away from.In this case, can omit the use sublance takes a sample.At this advantageously: when in the focal spot district, obtaining steel appearance, can directly from molten steel, dip, and needn't pass the slag blanket that possibly be present on the molten steel.
At this preferably, in this technology channel, can pack into and be used for steel appearance or the temperature of gas appearance and/or the device that composition is measured being obtained.In this case, sample can be because of not removing lingeringly assessing of causing from oxygen-blowing gun.This assessment for example can be duplicated through laser induced plasma spectrometry and carried out.
With respect to concerning from the focal spot district so that from the melt of motion for the parameter of metal bath carry out obtain, the advantage of the measurement that the sample that in technology channel, obtains is carried out is that sample does not move in technology channel.Additionally, also omitted other disturbing factor that causes by focal spot district environment, influence is measured when in technology channel, measuring, environmental pressure that for example changes and relatively poor visual condition.In addition, the measurement to the parameter of the molten steel in technology channel provides following advantage: needn't from oxygen-blowing gun according to the present invention, obtain sample, so that obtain parameter.Can detect more quickly thus.
According to a kind of embodiment, can in technology channel, pack into and be used to detect the device of spectroscopic data.
According to a kind of favourable embodiment, this technology channel is connected with being used to provide device solid-state, material liquid or gaseous state.Through adding the material that for example contains alloying element to molten steel, just can influence the steel quality that is obtained by this device that is used for supplying with.If can add through technology channel, then need not in oxygen-blowing gun, be provided for the additional channel of this purpose, can reduce in other words or discarded interpolation through additional spray gun.
Thermel protection device surrounds technology channel and oxygen pipeline along the oxygen-blowing gun longitudinal direction at least at least in portion's section of being cooled off by protective gas of oxygen-blowing gun.Advantageously; Thermel protection device is passed by a plurality of passages; Wherein said passage is connected with the protective gas feedway; And be passed in the medial compartment that has between the oxygen pipeline of outlet nozzle, technology channel and the thermel protection device, and/or have one or more mouth mouths in the shell of oxygen-blowing gun.In this case, protective gas helps the cooling of thermel protection device better and prevents to receive oxidative wear.If these passages have the mouth mouth in the shell of oxygen-blowing gun, then this mouth mouth is encased by the protection gas hood, and this can prevent incrustation and wearing and tearing especially effectively.The splash slag or the metal that splashes can be blown away in order to avoid touch shell by the protection air-flow, and do not arrive shell in the case.Splash slag or the metal that splashes that arrive shell can partly be blown away by the protection air-flow again.Because shell rifle head side by the Duan Zhongwei of portion of protective gas cooling but by water-cooled, so the said body that splashes only slowly solidifies, this has simplified air blowing.Run into the slag or the steel that splashes turns cold and splash on the shell with not comparing with lower temperature with the oxygen-blowing gun of protective gas cover of splashing of shell when passing the protective gas cover.Therefore, carry out and the not too violent reaction of shell, or do not carry out this reaction, thereby the shell wearing and tearing are lighter.Additionally obtain following advantage: with the situation of the material vigorous reaction of shell under the incrustation that occurs compare, this incrustation that on shell, forms is adhered to not too securely.Correspondingly, this incrustation is earlier dropped from shell than the incrustation of adhering to more consumingly under itself weight.
According to a kind of favourable embodiment; The rifle head of said oxygen-blowing gun is covered by said thermel protection device equally, and the rifle rostral components of wherein said thermel protection device constitutes guard member, said guard member removedly with can be fixed on the said technology channel with changing; Wherein in said guard member, be provided with a plurality of ports; Through said port, the so definite respectively size of wherein said port makes between said outlet nozzle and guard member, to keep the portion of misunderstanding each other said outlet nozzle by outside guiding.Protective gas can be revealed through said crack portion.Thus, outlet nozzle prevents incrustation and wearing and tearing, and is cooled.Additionally, protective gas also constitutes the outer cover of the Oxygen Flow of outflow, and this Oxygen Flow can directionally penetrate in the molten steel thus.Thus, can control said penetration depth better.According to a kind of embodiment, this guard member can have the outlet that is used for technology channel.According to a kind of embodiment, size can be so confirmed in this outlet, makes between technology channel and guard member, to keep the portion of misunderstanding each other.Protective gas can be revealed through this crack portion.Thus, technology channel prevents incrustation and wearing and tearing, and is cooled.According to another kind of embodiment, between technology channel and guard member, do not stay crack portion.According to another embodiment, guard member does not have the outlet that is used for technology channel.At this, this technology channel finished before guard member.Constituted in the space section of technology channel extension in rifle head side, for example in the space section between guard member and technology channel rifle head side end, temperature for example can be used as measurement parameter and measure, and this for example allows the state of inferring the rifle head.
Thermel protection device can be made up of one or more members in principle.Advantageously thermel protection device is made up of a plurality of members because said member compare with a unique member can be littler ground and then make more simply, perhaps when safeguarding, change more easily.For example, thermel protection device can be made up of a plurality of rings that pile up each other.Advantageously, at least one member of thermel protection device is fixed on the technology channel.If member thermel protection device, that be positioned on the lower position in bottom-time at oxygen-blowing gun setting-rifle head is fixed on the technology channel, then can carry the load of setting member above it by this member or by its fixed structure.In this case, can either partially or fully omit the fixed mechanism that separates of other member that is used for thermel protection device in oxygen-blowing gun, this makes the structure of oxygen-blowing gun more simple with manufacturing.
According to a kind of embodiment of oxygen-blowing gun of the present invention, the length of technology channel can irrespectively be adjusted with oxygen pipeline and thermel protection device.For this reason, for example the end segments of the rifle head side of technology channel can comprise pipeline section, and this pipeline section can be moved into said technology channel neutralization and from said technology channel, shift out.Shifting out under the state, this pipeline section prolongs this technology channel.Thus, can confirm the measurement parameter in diverse location, and the remainder of this oxygen-blowing gun is moved.
By oxygen-blowing gun according to the present invention, handle relevant measurement parameter with molten steel and can on for the desirable position of each measurement parameter, measure simple and calm strategical vantage point.Like this, just simplified the preferred plan of handling.
Schematic exemplary plot by following specifies the present invention.
Fig. 1 show according to the embodiment of oxygen-blowing gun of the present invention at the longitudinal section of rifle head side by portion's section of protective gas cooling.
Fig. 2 show according to the embodiment of oxygen-blowing gun of the present invention in the part of rifle head side by the longitudinal section of portion's section of protective gas cooling.
Fig. 3 shows the angled view according to portion's section of the embodiment of oxygen-blowing gun of the present invention.
Fig. 1 shows the longitudinal section according to the rifle head side end of the embodiment of oxygen-blowing gun 1 of the present invention.The technology channel 2 at center is centered on by two oxygen pipelines 3.The shell of oxygen-blowing gun is made up of the thermel protection device 4 of refractory material system, and this thermel protection device is comprised of multiple members.These members are bowl-shape guard member 4b of pipe 4a and covering rifle head.Pipe 4a is fixed on the technology channel through fixture 5.Guard member 4b is fixed on the technology channel through fixture 6.Oxygen is represented with the waveform arrow.Protective gas is represented with straight arrow.The member 4a that protective gas is flowed through at technology channel 2, oxygen pipeline 3 and thermel protection device, the medial compartment between the 4b, and the passage in the flowing pipe 4a.This medial compartment or passage were not illustrated with being connected of protective gas feedway.
On the shell of this external oxygen-blowing gun, protective gas flows out from the passage in the pipe 4a, and covers this shell with the protection gas hood.The Oxygen Flow that flows out from outlet nozzle 7 is wrapped by the protection air-flow that flows out from the crack portion between outlet nozzle 7 and the guard member 4b.The protective gas opening from guard member 17 equally flows out.The device 8 that is used to obtain steel appearance is installed in technology channel 2.In order to take a sample, this device that is used for obtaining steel appearance sinks to the molten steel from technology channel.Be used for confirming that the sensor 9 of temperature and the sensor 10 of the distance that is used for definite rifle to solid and/or liquid level are placed in the technology channel.This sensor records said and has constituted the corresponding measurement data in the space section of technology channel extension in rifle head side.On the shell of oxygen-blowing gun, be fixed with the sensor 11 that is used to measure air pressure.Another sensor 12 that is used to measure air pressure is installed in outlet nozzle 7.
For more for clarity sake, the port of lower end, outlet nozzle 7 and guard member 4b of lower end, the technology channel 2 of passage mouth mouth, the oxygen pipeline 3 of circulation edge, the pipe 4a of opening 17 is not shown, outlet nozzle 7 by outside guiding through this port.
Fig. 2 shows the part by the longitdinal cross-section diagram of portion's section of protective gas cooling according to the rifle head side of the embodiment of oxygen-blowing gun of the present invention.Corresponding to the member of Fig. 1 have with Fig. 1 in identical Reference numeral.The rifle head is equipped with guard member 4b.Guard member 4b does not have the port that is used for technology channel.Technology channel finished before guard member 4b.Constituted in the space section of technology channel extension in rifle head side, between the end of the rifle head side of guard member and technology channel, be provided with temperature sensor 19.
Fig. 3 shows the oblique view according to the part that comprises the rifle head of the embodiment of oxygen-blowing gun of the present invention.Sensor 13,14,15,16 is housed on a plurality of positions of shell.In Fig. 2, also see technology channel 2 and a plurality of outlet nozzle 7 at the center on the rifle head.The rifle head is equipped with guard member 4b, and this guard member has the port that is used for technology channel 2.Between guard member 4b and outlet nozzle 7 or technology channel 2, be provided with the crack portion of annular.In addition, guard member 4b has the opening 17 of a plurality of perforations, and protective gas can be from technology channel 2, unshowned oxygen pipeline and thermel protection device member, promptly manage medial compartment between 4a and the guard member 4b flows to oxygen-blowing gun via the opening of this perforation shell.
Portion's section by the protective gas cooling of oxygen-blowing gun finishes at separator bar 18 places.Before separator bar edge 18, oxygen-blowing gun is by water-cooled.Begin to the rifle head from separator bar 18, oxygen-blowing gun is cooled off by protective gas, wherein in by the protective gas cooled zones, the member of thermel protection device, promptly manages the shell that 4a and guard member 4b constitute oxygen-blowing gun.Edge 18 be formed in oxygen-blowing gun by portion's section of protective gas cooling with by the boundary line between water-cooled the section.
Reference numerals list
1 oxygen-blowing gun
2 technology channels
3 oxygen pipelines
4 thermel protection devices
The 4a pipe
The 4b guard member
5 fixtures
6 fixtures
7 outlet nozzles
8 are used to obtain the device of steel appearance
9 are used for confirming the sensor of temperature
10 are used for the sensor of the distance of definite rifle to solid and/or liquid level
11 are used to measure the sensor of air pressure
12 are used to measure the sensor of air pressure
13 sensors
14 sensors
15 sensors
16 sensors
17 openings (in the guard member)
18 edges
19 temperature sensors
Claims (12)
- One kind at least in portion's section of rifle head side by the oxygen-blowing gun of protective gas cooling; (1); Said oxygen-blowing gun has the technology channel at center; (2) and on said technology channel next door have at least two oxygen pipelines; (3) and the thermel protection device of processing by refractory material that surrounds said technology channel and oxygen pipeline; (4); Said oxygen pipeline is equipped with at least one outlet nozzle respectively in rifle head side; (7); The longitudinal axis of wherein said oxygen pipeline is different from the longitudinal axis of said technology channel; Said thermel protection device constitutes said oxygen-blowing gun at least in the portion's section by the protective gas cooling of rifle head side; (1) shellWherein at least in the portion's section by the protective gas cooling of rifle head side; Medial compartment having between the said oxygen pipeline (3) of outlet nozzle (7), said technology channel (2) and the said thermel protection device (4) is connected with a kind of protective gas feedway; And said thermel protection device (4) comprises the refractory material of one deck, preferred multilayer at leastWherein said oxygen-blowing gun (1) comprises the sensor (9,10,12) that at least one is used for confirming measurement parameter, and wherein said sensor so is placed at least one in the following position,-thermel protection device (4),-technology channel (2),-outlet nozzle (7),Make said sensor in rifle head side has constituted the space section of an extension of said technology channel, to record measurement parameter a kind of.
- 2. oxygen-blowing gun according to claim 1 is characterized in that, measurement parameter is derived from following group:-temperature,-air pressure,The distance of-rifle to solid and/or liquid level,-spectroscopic data.
- 3. according to the described oxygen-blowing gun of one of aforementioned claim, it is characterized in that in said technology channel (2), can pack into is used to obtain the device (8) of steel appearance and/or gas appearance.
- 4. oxygen-blowing gun according to claim 3 is characterized in that, in said technology channel (2), can pack into to be used to measure steel appearance or the temperature of gas appearance and/or the device of composition that is obtained.
- 5. according to the described oxygen-blowing gun of one of aforementioned claim, it is characterized in that in said technology channel (2), can pack into is used to detect the device of spectroscopic data.
- 6. according to the described oxygen-blowing gun of one of aforementioned claim, it is characterized in that said technology channel (2) is connected with being used to provide device solid-state, material liquid or gaseous state.
- 7. according to the described oxygen-blowing gun of one of aforementioned claim; It is characterized in that; Said thermel protection device (4) is run through by passage, and wherein said passage is connected with the protective gas feedway and is passed in the medial compartment that has between the said oxygen pipeline of outlet nozzle, said technology channel and the thermel protection device and/or has the mouth mouth in the shell at said oxygen-blowing gun.
- 8. according to the described oxygen-blowing gun of one of aforementioned claim; It is characterized in that; The rifle head of said oxygen-blowing gun is covered by said thermel protection device (4) equally, and the rifle rostral components of wherein said thermel protection device (4) constitutes guard member (4b), said guard member removedly with can be fixed on the said technology channel (2) with changing; Wherein in said guard member, be provided with port; Through said port, the so definite respectively size of said port makes between said outlet nozzle and guard member, to keep the portion of misunderstanding each other said outlet nozzle (7) by outside guiding.
- 9. according to the described oxygen-blowing gun of one of aforementioned claim, it is characterized in that said thermel protection device (4) is comprised of multiple members.
- 10. oxygen-blowing gun according to claim 8 is characterized in that, at least one member of said thermel protection device (4) is fixed on the said technology channel (2).
- 11. according to the described oxygen-blowing gun of one of aforementioned claim, it is characterized in that, sensor (11 also be installed on said oxygen-blowing gun; 13; 14,15), said sensor can record measurement data on the next door of the space section of a said extension that has constituted said technology channel in rifle head side.
- 12. will be according to the application of the described oxygen-blowing gun of one of aforementioned claim in the molten steel oxygen treatments applied.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA1963/2008 | 2008-12-16 | ||
| AT0196308A AT506950B1 (en) | 2008-12-16 | 2008-12-16 | PROTECTIVE GAS COOLED OXYGEN BLASLANT |
| PCT/EP2009/067268 WO2010076214A1 (en) | 2008-12-16 | 2009-12-16 | Oxygen blowing lance cooled by protective gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102334003A true CN102334003A (en) | 2012-01-25 |
Family
ID=41480283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801509548A Pending CN102334003A (en) | 2008-12-16 | 2009-12-16 | Oxygen blowing lance cooled by protective gas |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2366086A1 (en) |
| KR (1) | KR20110096587A (en) |
| CN (1) | CN102334003A (en) |
| AT (1) | AT506950B1 (en) |
| BR (1) | BRPI0922971A2 (en) |
| WO (1) | WO2010076214A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014207A (en) * | 2017-05-19 | 2017-08-04 | 中国恩菲工程技术有限公司 | Oxygen rifle brick |
| CN110628983A (en) * | 2019-10-10 | 2019-12-31 | 北京科技大学 | Converter smelting fire point area temperature continuous monitoring oxygen lance system and monitoring method |
| CN111718203A (en) * | 2020-07-28 | 2020-09-29 | 中国一冶集团有限公司 | Refractory castable for converter sublance and preparation method thereof |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679744B (en) * | 2011-03-10 | 2015-04-01 | 中国恩菲工程技术有限公司 | System controlling cooling of oxygen top-blown smelting furnace spraying gun |
| UA113614C2 (en) * | 2013-02-14 | 2017-02-27 | METHOD OF OPERATION OF OXYGEN PRODUCTION COMPANY IN METALLURGICAL CAPACITY AND MEASUREMENT SYSTEM FOR DETERMINATION OF USED DURING SIGNIFICANCE | |
| AT514132B1 (en) * | 2013-03-25 | 2015-11-15 | Voestalpine Stahl Gmbh | Method for determining reaction data of a reaction sequence |
| WO2014179825A1 (en) * | 2013-05-06 | 2014-11-13 | Technological Resources Pty. Limited | A solids injection lance |
| DE102013014404A1 (en) * | 2013-08-29 | 2015-03-05 | Linde Aktiengesellschaft | Method for detecting a combustion gas in an oven |
| JP6600329B2 (en) | 2017-03-31 | 2019-10-30 | 大陽日酸株式会社 | Burner, burner operation method, and cold iron source melting and refining method |
| JP6660044B2 (en) | 2017-12-22 | 2020-03-04 | Ｊｆｅスチール株式会社 | Method of acid refining of molten iron and top blowing lance |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0919634A1 (en) * | 1997-12-01 | 1999-06-02 | Plibrico G.m.b.H. | Blow lance with gas cooled refractory casing |
| US20040119211A1 (en) * | 2001-06-11 | 2004-06-24 | Robins James W. | Metal making lance assembly |
-
2008
- 2008-12-16 AT AT0196308A patent/AT506950B1/en not_active IP Right Cessation
-
2009
- 2009-12-16 WO PCT/EP2009/067268 patent/WO2010076214A1/en active Application Filing
- 2009-12-16 CN CN2009801509548A patent/CN102334003A/en active Pending
- 2009-12-16 EP EP09799324A patent/EP2366086A1/en not_active Withdrawn
- 2009-12-16 KR KR1020117016598A patent/KR20110096587A/en not_active Application Discontinuation
- 2009-12-16 BR BRPI0922971A patent/BRPI0922971A2/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014207A (en) * | 2017-05-19 | 2017-08-04 | 中国恩菲工程技术有限公司 | Oxygen rifle brick |
| CN110628983A (en) * | 2019-10-10 | 2019-12-31 | 北京科技大学 | Converter smelting fire point area temperature continuous monitoring oxygen lance system and monitoring method |
| CN111718203A (en) * | 2020-07-28 | 2020-09-29 | 中国一冶集团有限公司 | Refractory castable for converter sublance and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010076214A1 (en) | 2010-07-08 |
| AT506950A4 (en) | 2010-01-15 |
| BRPI0922971A2 (en) | 2016-01-26 |
| KR20110096587A (en) | 2011-08-30 |
| AT506950B1 (en) | 2010-01-15 |
| EP2366086A1 (en) | 2011-09-21 |
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Application publication date: 20120125 |