CN219279940U - Converter oxygen rifle glues and applies slag cleaning device - Google Patents
Converter oxygen rifle glues and applies slag cleaning device Download PDFInfo
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- CN219279940U CN219279940U CN202320828110.1U CN202320828110U CN219279940U CN 219279940 U CN219279940 U CN 219279940U CN 202320828110 U CN202320828110 U CN 202320828110U CN 219279940 U CN219279940 U CN 219279940U
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Abstract
The utility model relates to a device for removing sticky slag of a converter oxygen lance, which comprises a lance head and a lance body, wherein the converter oxygen lance can penetrate into a converter vaporization flue, a supporting platform is connected to the converter vaporization flue through a connecting pipeline, the supporting platform is positioned on the connecting pipeline and is sequentially connected with an oxygen lance nitrogen sealing device and a sticky slag dry ice spraying and removing device, the converter oxygen lance penetrates into the converter vaporization flue through the sticky slag dry ice spraying and removing device, the oxygen lance nitrogen sealing device and the connecting pipeline, the sticky slag dry ice spraying and removing device comprises a closed housing, a dry ice spraying head with the tail end inclined towards the converter oxygen lance is connected in the closed housing, a sticky slag particle outlet is also formed in the closed housing, the sticky slag particle outlet is connected with a vacuum suction device and a sticky slag particle treatment mechanism, and the device for removing sticky slag of the converter oxygen lance can automatically perform sticky slag cleaning of the converter oxygen lance and can improve the sticky slag cleaning efficiency of the converter oxygen lance.
Description
Technical Field
The utility model relates to converter oxygen lance treatment equipment, in particular to a converter oxygen lance sticking slag removing device.
Background
The oxygen lance is a tubular device which blows high-pressure high-purity oxygen above a molten metal bath in a converter at a supersonic speed and is provided with a high-pressure water cooling protection system. Also called a spray gun, which is an important device for oxygen-blowing steelmaking.
The oxygen lance is one of key parts of an oxygen blowing device of a top-bottom rich blowing converter, and is used for blowing oxygen to a molten pool in the converter during blowing and blowing nitrogen into the converter after blowing is finished so as to perform a slag splashing furnace protection function to protect a furnace lining. When in blowing, an oxygen gun connected with an oxygen supply pipe of an oxygen valve station in a workshop enters a converter shell from a lifting device, and when the oxygen gun is at a certain height from the liquid level of molten iron, high-speed oxygen is blown to high-temperature liquid metal, so that metal smelting is realized. After smelting, the oxygen lance is lifted to a certain height by the lifting device. When the converter is smelted, the oxygen lance is easy to stick slag, but in order to protect the converter lining and prolong the service life, the technology of slag splashing and furnace protection is generally adopted, so that the slag sticking of the external layer pipe of the oxygen lance, especially the nozzle, is very serious.
Excessive slag adhesion of the oxygen lance can bring the following harm to converter steelmaking and smelting: (1) the potential safety hazard is large, and at present, almost all oxygen top-blown converter smelting processes adopt a winch device to realize lifting of an oxygen lance, so that excessive slag sticking of the oxygen lance can increase the bearing load of a steel rope in the winch device, and serious consequences such as falling of the oxygen lance into a furnace are easily caused. (2) After the production efficiency is reduced and the oxygen lance is damaged and slag is seriously stuck, the oxygen lance must be lifted out of the nitrogen sealing device so as to replace the oxygen lance, otherwise, only the oxygen lance is cut off, which is time-consuming and labor-consuming and seriously affects the production efficiency. (3) The improvement of production technical indexes is affected, slag sticking of the oxygen lance is serious, the furnace volume ratio is relatively reduced, so that the control of the smelting process is difficult, the splashing phenomenon often occurs, and the blowing loss, the heat loss and the slag consumption are increased. (4) Part of technological parameters are changed, otherwise, cold steel and slag on the gun body are stripped, which is an unprecedented unconventional operation, and is generally concentrated treatment, so that oxygen guns are easy to mutually pile and press to deform, thereby influencing the technological parameters.
Converter steelmaking slag is a complex multicomponent system consisting of a plurality of oxides, the properties of which depend on the content of the respective oxides. Most slag has loose tissue, high hardness and high brittleness, and is easy to fall off under the condition of being pressed or impacted. Therefore, the cleaning of the oxygen lance slag is mainly to clean the red slag which is the mixed oxide adhered to the oxygen lance slag, and the residual steel adhered to the oxygen lance outer layer pipe is connected with the oxygen lance into a whole due to the high temperature, and the residual steel is cleaned or replaced by a new oxygen lance nozzle only by cutting the oxygen lance body.
For this purpose, the following three methods have been studied: (1) coating methods, i.e. spraying a refractory material with high temperature resistance and high adhesion on the surface of the lance, are very difficult to implement, and so far no examples of successful application have been seen. (2) The special slag is produced, namely, the viscosity and the alkalinity of smelting slag are reduced, so that the slag does not have stronger adhesive force with an oxygen gun, but the method is not in line with the steelmaking process requirements of a modern oxygen top-blown converter, and cannot be implemented. (3) The slag scraper method is that a slag scraper is arranged at the nitrogen sealing device of the oxygen lance, the oxygen lance is lifted out of the nitrogen sealing device when smelting is finished, and slag stuck on the lance body is scraped down by the slag scraper, so that slag sticking of the oxygen lance is avoided, but the scraping force is limited and difficult to control. Thus, there is a complete need for improvements in the art.
At present, 2 types of oxygen lance steel slag cleaning modes are manual cleaning and automatic mechanical slag scraping. When the steel slag adhered on the oxygen lance is cleaned manually, the working environment is bad, the labor intensity is high, the operation can be only performed when the production is stopped, the labor and the time are wasted, and the efficiency is low. Therefore, it is necessary to provide an oxygen lance slag scraper capable of automatically scraping the steel slag adhered to the oxygen lance. There are several common structural types of domestic automatic slag scraping devices, and for various reasons, automatic slag scraping devices are only used in a few steel factories, and even after being equipped with slag scraping devices, some steel factories are rarely used because of unsatisfactory slag scraping effects and the like.
In order to perfect the converter oxygen lance slag scraping technology, various slag scraping methods are invented by each converter steel mill, from the beginning of manual beating with a steel hammer, to the direct pushing and pulling of a cylinder, a direct guiding sleeve and a slag scraping ratchet wheel, the main steps are a hinge connecting rod crank sliding block, the cylinder unloading and loading, and an annular slag scraping and stripping ring cutter. The oxygen lance slag scraping technology is continuously improved and perfected at present.
Based on the above, the following is a comparison of several common structures of the slag scraping device and the slag scraping performance thereof.
Structure type of slag scraper for common oxygen gun
The slag scraping principle of the existing automatic slag scraping equipment is basically consistent. When converter blowing or 'splashing slag protection' is finished, when the oxygen lance is lifted to the nitrogen seal, the pneumatic control device of the oxygen lance slag scraper drives the left and right 2 mechanical arms, so that the U-shaped or semicircular slag scraper tool bit of the mechanical arms folds and surrounds the oxygen lance which is adhered with steel slag, and when the oxygen lance is lifted, the slag scraper tool bit begins to scrape the steel slag adhered on the oxygen lance. After the slag scraping is finished, the pneumatic control device drives the 2 mechanical arms to move back to back, the slag scraping cutter head is opened, and the lifting device lifts the oxygen lance to be separated from the nitrogen seal. According to the different structural forms and connection modes of the slag scraping heads, the existing slag scraper type mainly comprises a hammer striking method, a ratchet type oxygen lance slag scraper, a rocker arm type oxygen lance slag scraper, an oxygen lance slag scraper capable of realizing secondary slag scraping and the like.
1. Hammer head striking method
And hammering by using a set of rotating sharp-angle hammerheads to remove the sticky slag of the oxygen lance. The rotary hammer head can move up and down, and stops at a lower position when the rotary hammer head does not work. The slag scraping structure is simple, occupies small space and is easy to arrange. The defect is that the steel slag removal rate of the deformation after harder and hammering is low, the oxygen gun head is easy to damage, and the hammer head is worn and unsafe.
2. Ratchet type oxygen lance slag scraper
The slag scraper is symmetrically arranged at two sides of an oxygen gun and mainly comprises an air cylinder, an air cylinder support, a base and a bearing
The device comprises a seat, a slag scraping ratchet wheel, a proximity switch and the like. The cylinder is fixed on the base through a cylinder support, the cylinder telescopic rod is connected with the slag scraping ratchet wheel through a connecting shaft and a pin shaft, and the stroke of the cylinder is controlled by the proximity switch. The working principle of the oxygen lance slag scraper is as follows: when the oxygen lance works, when the nitrogen seal is lifted to wait for deslagging, the cylinders at the two sides push the slag scraping ratchet wheels simultaneously, after the oxygen lance reaches a working position, the cylinders stop moving, the ratchet wheels at the two sides are combined to hold the oxygen lance, and when the oxygen lance is lifted up, the steel slag is crushed and falls off through the extrusion and cutting of the ratchet wheels, so that the steel slag adhered to the outer layer pipe of the oxygen lance is scraped. The ratchet wheel is in transition fit with the connecting pin shaft, the ratchet wheel can move along with the lifting of the oxygen lance, steel slag attached to the oxygen lance falls off due to repeated rolling of the ratchet wheel, and the ratchet wheel is prevented from being clamped by a large block of residual steel, so that the ratchet wheel is prevented from being driven when the oxygen lance is continuously lifted, and the connecting shaft and the bearing seat are prevented from being broken or the steel wire rope of the oxygen lance is prevented from being broken due to overlarge stress, so that safety accidents are avoided. After the slag scraping is finished, the cylinders at the two sides move reversely, the ratchet wheels at the two sides are opened, and the oxygen lance is far away from the nitrogen seal. The device has simple structure and working principle and convenient installation and maintenance, but the slag scraping ratchet wheel has complex processing and manufacturing process and high cost.
3. Rocker arm type oxygen lance slag scraper
The slag scraper is symmetrically arranged at two sides of the oxygen lance and mainly comprises an air cylinder, an air cylinder seat, a rocker arm,
The device comprises a rocker arm bearing seat, a slag scraping head, a proximity switch and the like. The cylinder is fixed on the bracket through a cylinder seat, the cylinder telescopic rod is connected with the rocker arm through a pin shaft, and the slag scraping head is fixed with the rocker arm through welding. Each slag scraping blade is fixed on the slag scraping head through a wedge block. The working principle of the oxygen lance slag scraper is as follows: when the oxygen lance works and is ready for deslagging, the cylinders at the two sides push the rocker arms to rotate around the center of the rocker arm bearing seat at the same time, and when the slag scraping heads at the two sides move to the horizontal position to clamp the oxygen lance, the cylinders stop moving, and at the moment, the oxygen lance starts to lift, and slag adhering to the oxygen lance is scraped through the slag scraping blade. After the slag scraping is finished, the cylinders at the two sides move reversely, the slag scraping heads at the two sides are opened, and the oxygen lance is far away from the nitrogen seal.
The oxygen lance slag scraper with the structure is simple in structure, convenient to install and maintain, and only the wedge block is required to be removed when the slag scraping blade is damaged, but after the slag scraping blade is worn along with swing of the rocker arm, a certain included angle is formed between the slag scraping blade and the oxygen lance outer tube when the slag scraper is clamped, so that the slag scraping blade cannot be attached to the oxygen lance outer tube, and the slag scraping effect is poor. In order to ensure the slag scraping effect, the slag scraping blade needs to be replaced once worn, so that the utilization rate of the slag scraping blade is reduced, and the consumption is increased. In addition, since the cutting portion is thick (not sharp enough) in order to secure the strength of the slag scraping blade, it is disadvantageous to cut the steel slag.
4. Oxygen lance slag scraper capable of realizing continuous secondary slag scraping
The structure of the slag scraper mainly comprises a cylinder, a connecting frame, a support, a connecting rod, a slag scraper body, a bracket, a proximity switch and other parts. The left and right 2 connecting brackets are connected into a whole through bolts. The upper flange and the lower flange of the bracket are connected through bolts and are provided with sliding guide rails. The cylinder is connected with the connecting rod and the connecting rod is connected with the support through a pin roll and is respectively fixed on the connecting frame and the slag scraper body through bolts, and the connecting frame, the connecting rod and the slag scraper body form a crank-slide block mechanism together.
The slag scraper body mainly comprises a guide wheel, a guide wheel bracket, a primary slag scraping head, a secondary slag scraping head and the like. Each set of slag scraper body is provided with 4 groups of guide wheels, the guide wheels are fixed on a guide wheel bracket through bolts, the guide wheel bracket is of a box structure formed by welding steel plates, and the slag scraping heads for one time are hard alloy cutter heads. When the oxygen lance slag scraper scrapes slag, 4 primary slag scraping heads are uniformly and symmetrically arranged by taking the oxygen lance as a center, the surface of the outer wall of the oxygen lance corresponding to the secondary slag scraping heads is semicircular concentric with the outer wall of the oxygen lance, and the primary slag scraping heads and the secondary slag scraping heads are respectively fixed on the guide wheel bracket through bolts. The slag scraping working principle is as follows: after the blowing of the oxygen lance is finished, the oxygen lance is lifted upwards, the slag scraper of the oxygen lance is ready to enter a working state, and the air cylinder drives the slag scraper bodies at two sides to move in opposite directions. The pneumatic control device controls 2 air cylinders, the 2 air cylinders drive two connecting frames and two connecting rods to rotate respectively, the two connecting rods move in opposite directions along the sliding track by pushing two slag scraping device bodies respectively, one and two slag scraping heads fixed on two guide wheel supports are simultaneously close to the oxygen guns from two sides, a proximity switch of the slag scraping device of the oxygen guns is used as a position of an inductor to sense the guide wheel support, and when the slag scraping heads on two sides just fold the oxygen guns to encircle, the air cylinders stop moving. At the moment, the distance d between the primary slag scraping head and the outer tube wall of the oxygen lance 1 Distance d between secondary slag scraping head and outer tube wall of oxygen gun 2 . At this time, the oxygen lance slag scraper starts slag scraping work. The primary slag scraping head is a hard alloy knifeThe secondary slag scraping head starts to scrape slag after the large steel slag is fallen, and the secondary slag scraping head and the outer wall of the oxygen gun are concentric semi-circles with the outer wall of the oxygen gun, so that the secondary slag scraping heads on two sides just surround the oxygen gun, and the secondary slag scraping head can scrape slag on the oxygen gun, namely the slag scraping work of the slag scraper of the oxygen gun is completed. And after the slag scraping work is finished, the transmission system drives the slag scraping head groups at the two sides to move back to back, so that the slag scraping head groups at the two sides are kept in a far-away state.
The device has simple structure and is convenient to install and maintain. More importantly, the primary slag scraping head and the secondary slag scraping head work cooperatively, different slag scraping heads scrape different steel slag, secondary slag scraping is realized, and the work of scraping the steel slag on the outer wall of the oxygen lance is effectively completed. In addition, the slag scraping device has the advantages that the slag scraping device is used for scraping slag in a divided mode, the defect that the same slag scraping head bears different steel slag is avoided, the pressure during slag scraping is effectively reduced, a steel wire rope for lifting an oxygen lance can be further protected, however, the problem that the steel wire rope for lifting the oxygen lance breaks due to overlarge slag adhesion is solved.
The slag scraping devices have the defects of low slag removal rate, more slag residues, and the like due to the limitation of the structure of the converter, and the defects of the steel wire rope for lifting the oxygen lance.
Disclosure of Invention
In view of the foregoing drawbacks of the prior art, an object of the present utility model is to provide a device for cleaning slag from a converter lance, which solves one or more of the problems of the prior art.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the converter oxygen lance is provided with a lance head and a lance body, the converter oxygen lance can penetrate into a converter vaporization flue, a supporting platform is connected to the converter vaporization flue through a connecting pipeline, the supporting platform is positioned on the connecting pipeline and is sequentially connected with an oxygen lance nitrogen sealing device and a sticky slag dry ice spraying and removing device, the converter oxygen lance penetrates into the converter vaporization flue through the sticky slag dry ice spraying and removing device, the oxygen lance nitrogen sealing device and the connecting pipeline, the sticky slag dry ice spraying and removing device comprises a closed housing, the connecting tail end in the closed housing is connected with a dry ice spraying head inclined to the converter oxygen lance, a sticky slag particle outlet is further formed in the closed housing, and the sticky slag particle outlet is connected with a vacuum suction device and a sticky slag particle treatment mechanism.
As a further improvement of the above technical scheme:
the device is characterized in that the device is also connected with an oxygen gun slag-preventing coating spraying device, and the converter oxygen gun also penetrates through the oxygen gun slag-preventing coating spraying device.
The included angle between the dry ice injection head and the vertical axis of the converter oxygen lance is 25-45 degrees.
The vacuum suction device is provided with N 2 As a source of compressed air.
The sticky broken slag particle treatment mechanism comprises a solid/gas separation device, a flue gas cooler and a flue gas filtering treatment device.
The solid/gas separation device is any one of a cyclone separator, a separation settler with a folded plate or a volume separation settler.
The flue gas cooler comprises a fin cooling pipe, and one side of the fin cooling pipe is connected with a cooling fan.
The flue gas filtering treatment device adopts a pulse injection type filtering treatment device.
The filter component in the pulse blowing type filter treatment device is a filter bag or a filter cylinder, and the filter material of the pulse blowing type filter treatment device can be any one of ceramic materials, metal materials or high-temperature resistant chemical fiber materials.
Compared with the prior art, the utility model has the following beneficial technical effects:
1) Adopting a dry ice spraying head of the sticky slag dry ice spraying and removing device to spray dry ice to the converter oxygen lance, accelerating dry ice particles in high-pressure air flow, and impacting the surface of the converter oxygen lance; the dry ice particles are gasified at the moment of impact due to the extremely low temperature (-78 ℃) of the dry ice, the momentum of the dry ice particles disappears at the moment of impact, and heat exchange is rapidly carried out between the dry ice particles and the surface of the oxygen lance of the converter due to the oxygen lance of the converter and the adhesive dressing, and the oxygen lance of the converter has the advantages of high heat exchange efficiency, low heat loss, low cost, and the likeThe difference in expansion coefficients, the temperature difference between them will destroy the bond between the two materials, the temperature of the adhesive dressing is reduced, the brittleness is increased, and the dry ice sublimates rapidly into gaseous CO upon impact 2 The volume of the dry ice particles is expanded by approximately 800 times within a few thousandths of a second, so that micro explosion is caused at an impact point, a thermal shock phenomenon is formed, a slag adhering layer of the converter oxygen lance is impacted and broken, the slag adhering and adhering of the converter oxygen lance is removed, the efficiency of cleaning the slag adhering and adhering of the converter oxygen lance is improved, no mechanical structure directly acts on the converter oxygen lance, the drawing resistance of the converter oxygen lance is small, a steel wire rope for lifting the converter oxygen lance is prevented from being broken, in addition, the equipment automatically carries out slag adhering and adhering cleaning without manual operation, and the operation of maintenance personnel under the severe working condition is avoided;
2) The cleaned adhesive slag can be processed and collected by a vacuum suction device and an adhesive slag particle processing mechanism;
3) The slag-preventing coating material spraying device of the oxygen lance can spray slag-preventing coating materials on the upper surfaces of the lance head and the lance body of the converter oxygen lance, and can utilize the waste heat of the converter oxygen lance to dry the coating, so that slag can be prevented and coated by inserting oxygen into the converter oxygen lance again, and favorable conditions are created for cleaning the slag by dry ice;
4) The included angle range between the dry ice injection head and the vertical axis of the converter oxygen lance is 25-45 degrees, so that the dry ice particles and the converter oxygen lance have larger impact area, and the impact efficiency is improved;
5) Gasification of dry ice to produce CO 2 The method comprises the steps of carrying out a first treatment on the surface of the And the vacuum suction device adopts N 2 As a compressed air source, the process does not produce any secondary waste, and the secondary waste is not required to be treated;
6) The sticky broken slag particle treatment mechanism comprises a solid/gas separation device, large-particle sticky broken slag particles are separated and collected firstly, then the temperature of smoke is reduced through a smoke cooler, finally the smoke is filtered and treated through a pulse blowing type filtering treatment device, and finally clean smoke can be directly discharged.
Drawings
Fig. 1 shows an installation schematic view of the converter lance slag adhering and removing apparatus of the present embodiment.
Fig. 2 shows a schematic structural diagram of a dry ice blast cleaning device for slag adhering to the lance of the converter according to the present embodiment.
Fig. 3 is a schematic diagram showing the connection between the vacuum suction device and the sticky slag particle treatment mechanism in the sticky slag removal device of the converter oxygen lance of the embodiment.
The reference numerals in the drawings:
1. a converter oxygen lance; 11. a gun head; 12. a gun body; 2. a converter vaporization flue; 3. a support platform; 31. a connecting pipe; 4. an oxygen lance nitrogen sealing device; 5. a dry ice spraying and removing device for the adhesive slag; 51. a closed housing; 52. a dry ice blasting head; 53. sticking and coating a slag particle outlet; 6. a vacuum suction device; 7. a treatment mechanism for sticking and coating the broken slag particles; 71. a solid/gas separation device; 72. a flue gas cooler; 73. a flue gas filtering treatment device; 8. an oxygen gun slag-proof coating spraying device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the following more detailed description of the device according to the present utility model is given with reference to the accompanying drawings and the detailed description. The advantages and features of the present utility model will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for the purpose of facilitating and clearly aiding in the description of embodiments of the utility model. For a better understanding of the utility model with objects, features and advantages, refer to the drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it would be understood by those skilled in the art, and that any structural modifications, proportional changes, or dimensional adjustments made in the drawings should not be construed as unduly limiting the utility model, but rather as falling within the scope of the utility model herein disclosed.
As shown in fig. 1 to 3, the converter oxygen lance slag adhering and removing device of the embodiment is used for converter oxygenThe gun 1 comprises a gun head 11 and a gun body 12, the converter oxygen gun 1 can penetrate into a converter vaporization flue 2, a supporting platform 3 is connected to the converter vaporization flue 2, the supporting platform 3 is connected with the converter vaporization flue 2 through a connecting pipeline 31, the supporting platform 3 is positioned on the connecting pipeline 31 and is sequentially connected with an oxygen gun nitrogen sealing device 4 and a sticky slag dry ice spraying and cleaning device 5, the converter oxygen gun 1 penetrates into the converter vaporization flue 2 through the sticky slag dry ice spraying and cleaning device 5, the oxygen gun nitrogen sealing device 4 and the connecting pipeline 31, the sticky slag dry ice spraying and cleaning device 5 comprises a closed housing 51, a dry ice spraying head 52 with the tail end inclined towards the converter oxygen gun 1 is connected in the closed housing 51, a sticky slag particle outlet 53 is further formed in the closed housing 51, the sticky slag particle outlet 53 is connected with a vacuum suction device 6 and a sticky slag particle treatment mechanism 7, and the vacuum suction device 6 uses N 2 As a source of compressed air.
The sticky slag dry ice spraying and cleaning device 5 is also connected with an oxygen lance anti-slag sticky coating spraying device 8 for spraying the anti-slag sticky coating on the converter oxygen lance 1, and the converter oxygen lance 1 also penetrates into the oxygen lance anti-slag sticky coating spraying device 8.
The included angle between the dry ice injection head 52 and the vertical axis of the converter oxygen lance 1 ranges from 25 degrees to 45 degrees, so that the dry ice injection head 52 can be obliquely aligned with the converter oxygen lance 1, the contact area of the injected dry ice and the converter oxygen lance 1 is increased, and the cleaning efficiency of the sticky slag is improved.
The sticky broken slag particle treatment mechanism 7 comprises a solid/gas separation device 71, a flue gas cooler 72 and a flue gas filtering treatment device 73, wherein the solid/gas separation device 71 is any one of a cyclone separator, a separation settler with a folded plate or a volume separation settler, the flue gas cooler 72 comprises a fin cooling pipe, one side of the fin cooling pipe is connected with a cooling fan, the flue gas filtering treatment device 73 adopts a pulse blowing type filtering treatment device, a filtering component in the pulse blowing type filtering treatment device is a filter bag or a filter cylinder, a filter material of the pulse blowing type filtering treatment device can be any one of ceramic materials, metal materials or high-temperature resistant chemical fiber materials, the sticky broken slag particles of large particles are separated and collected firstly through the solid/gas separation device 71, then the temperature of flue gas is reduced through the flue gas cooler 72, and finally the flue gas is filtered and treated through the pulse blowing type filtering treatment device.
When the device for removing the sticky slag of the converter oxygen lance of the embodiment is used, when the lance is lifted after oxygen is blown by the converter oxygen lance 1 each time, the sticky slag dry ice spraying and removing device 5 is started to be installed, the dry ice is sprayed from the dry ice spraying head 52 after being mixed with high-pressure air flow and is sprayed to the converter oxygen lance 1, dry ice particles are accelerated in the high-pressure air flow to impact the surface of the converter oxygen lance 1, heat exchange is rapidly carried out between the dry ice particles and the surface of the converter oxygen lance 1, and the dry ice particles are gasified at the impact moment, so that the dry ice is rapidly sublimated into gas CO 2 The dry ice particles expand by approximately 800 times in a few thousandths of a second, so that micro explosion is caused at an impact point, the adhesive dressing of the converter oxygen lance 1 can be cleaned, the adhesive dressing impacted on the converter oxygen lance 1 forms adhesive slag particles, meanwhile, the cleaned adhesive slag particles are sucked out from an adhesive slag particle outlet 53 by a vacuum suction device 6 and are sent into an adhesive slag particle treatment mechanism 7 for treatment, the adhesive slag particles with large particles are separated and collected firstly by a solid/gas separation device 71, then the temperature of the flue gas is reduced by a flue gas cooler 72, finally the flue gas is filtered by a pulse blowing type filtering treatment device, and the treated clean flue gas can be directly discharged.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which shall fall within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (9)
1. The utility model provides a converter oxygen rifle glues and applies slag cleaning device, the converter oxygen rifle includes rifle head and rifle body, in converter oxygen rifle can penetrate converter vaporization flue, its characterized in that: the device is characterized in that the converter vaporization flue is connected with a supporting platform, the supporting platform is connected with the converter vaporization flue through a connecting pipeline, the supporting platform is positioned on the connecting pipeline and sequentially connected with an oxygen gun nitrogen sealing device and a sticky slag dry ice spraying and cleaning device, the converter oxygen gun penetrates through the sticky slag dry ice spraying and cleaning device, the oxygen gun nitrogen sealing device and the connecting pipeline to penetrate into the converter vaporization flue, the sticky slag dry ice spraying and cleaning device comprises a closed housing, a dry ice spraying head, the tail end of which is connected in the closed housing, inclines towards the converter oxygen gun, a sticky slag particle outlet is further formed in the closed housing, and the sticky slag particle outlet is connected with a vacuum suction device and a sticky slag particle treatment mechanism.
2. The converter lance slag removal apparatus of claim 1 wherein: the device for removing the sticky slag by dry ice spraying is also connected with an oxygen gun anti-slag sticky coating spraying device, and the converter oxygen gun is also penetrated in the oxygen gun anti-slag sticky coating spraying device.
3. The converter lance slag removal apparatus of claim 1 wherein: the included angle between the dry ice injection head and the vertical axis of the converter oxygen lance is 25-45 degrees.
4. The converter lance slag removal apparatus of claim 1 wherein: the vacuum suction device is provided with N 2 As a source of compressed air.
5. The converter lance slag removal apparatus of claim 1 wherein: the sticky broken slag particle treatment mechanism comprises a solid/gas separation device, a flue gas cooler and a flue gas filtering treatment device.
6. The converter lance slag removal apparatus of claim 5, wherein: the solid/gas separation device is any one of a cyclone separator, a separation settler with a folded plate or a volume separation settler.
7. The converter lance slag removal apparatus of claim 5, wherein: the flue gas cooler comprises a fin cooling pipe, and one side of the fin cooling pipe is connected with a cooling fan.
8. The converter lance slag removal apparatus of claim 5, wherein: the flue gas filtering treatment device adopts a pulse injection type filtering treatment device.
9. The converter lance slag removal apparatus of claim 8 wherein: the filter component in the pulse blowing type filter treatment device is a filter bag or a filter cylinder, and the filter material of the pulse blowing type filter treatment device can be any one of ceramic materials, metal materials or high-temperature resistant chemical fiber materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320828110.1U CN219279940U (en) | 2023-04-14 | 2023-04-14 | Converter oxygen rifle glues and applies slag cleaning device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320828110.1U CN219279940U (en) | 2023-04-14 | 2023-04-14 | Converter oxygen rifle glues and applies slag cleaning device |
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| CN219279940U true CN219279940U (en) | 2023-06-30 |
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| CN202320828110.1U Active CN219279940U (en) | 2023-04-14 | 2023-04-14 | Converter oxygen rifle glues and applies slag cleaning device |
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| Country | Link |
|---|---|
| CN (1) | CN219279940U (en) |
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2023
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