CN105132609B - Suitable for different model hot-metal bottle or the rotary blowing desulfuring spray gun of different desulfurizing agents - Google Patents
Suitable for different model hot-metal bottle or the rotary blowing desulfuring spray gun of different desulfurizing agents Download PDFInfo
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- CN105132609B CN105132609B CN201510653976.3A CN201510653976A CN105132609B CN 105132609 B CN105132609 B CN 105132609B CN 201510653976 A CN201510653976 A CN 201510653976A CN 105132609 B CN105132609 B CN 105132609B
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Abstract
The invention discloses a kind of rotary blowing desulfuring spray gun for being applied to different model hot-metal bottle or different desulfurizing agents, including adpting flange, linkage section gun body, body of a gun section gun body and spray gun section, multiple rotating vanes are symmetrically arranged with the supervisor of the spray gun section and enhancing pipe outer wall, the rotating vane includes blade metal core, multiple interpolation type jet pipes are symmetrically arranged with the side wall of the supervisor bottom, the interpolation type jet pipe passes through and is provided with graphite bush on the interpolation type jet pipe outer wall on the outside of blade metal core, the blade metal core.The spray gun of the present invention is greatly improved during blowing desulfurization the floating interval of floating dock of desulfurizing agent and penetrates bubble ratio, substantially shorten the mixing time in molten bath, significantly improve the desulfurization kinetics condition of desulphurization reaction, molten iron level fluctuation is reduced, the desulfurization new method of invention is can be used for different desulfurizing agents and without the blowing desulfurization on size hot-metal bottle.
Description
Technical field
The present invention relates to molten iron preprocessing technical field, different model hot-metal bottle or different desulfurizing agents are applied in particular to one kind
Rotary blowing desulfuring spray gun.
Background technology
Molten iron pretreatment desulfurizing is used as process indispensable in modern steel industrial process stream, it has also become clean steel production is flat
One of key technology of platform.In numerous desulfurization methods, molten iron spraying desulfurization spraying is with its disposable small investment, easy to operate, molten iron
The features such as temperature drop is small is at home and abroad used widely.Molten iron spraying desulfurization spraying is to utilize the spray gun for inserting molten iron depths in container,
Desulfurization powder big flow is sprayed into molten iron of the temperature more than more than 1250 DEG C by high pressure nitrogen by being blown passage, and make desulfurization
Agent and the abundant haptoreaction of molten iron, so that the sulphur in molten iron be removed.As can be seen here, spray gun is the crucial portion of blowing desulfurization technique
Part, it is acted on not only imports molten hot metal depths by desulfurization powder, meanwhile, also to organize and spray by the injection flow field of spout
The stirring kinetic energy of blowing, realizes desulfurizing agent dispersion mixing in molten iron, improves desulfurizing iron reaction contact area and mass transfer speed
Degree, reaches the purpose of molten iron high-efficiency desulfurization
At present, there are a variety of molten iron spraying desulfurization spraying techniques in actual production, can be divided into pure particle according to desulfurizing agent species difference
Magnesium injection, magnesium-based mixing or composite blowing, the mixing of calcium base or composite blowing.Different according to the species of desulfurizing agent, different process makes
Desulfuring spray gun form is also not quite similar, and in such as pure granular magnesium blowing process, magnesium desulfurizer easily gasifies, due to medium and small sections
Metallic particles magnesium floating stroke is small in water pot molten iron depth as shallow, molten iron, the residence time is short, it is impossible to metal is completed in floating-upward process
The gasification and dissolving of granular magnesium, typically use gasifying chamber spray gun, and large-scale hot-metal bottle floating stroke is longer, then general using straight-through
The gun type of single jet；It is general in calcium base, magnesium-based mixing or composite blowing technique to use the double spouts of inverted T-shaped and straight-through single jet
Spray gun.
Studied by actual production investigation and hydraulics experiment, current molten iron spraying desulfurization spraying technique is present in actual production
Subject matter has：
(1) during pure magnesium gasifying chamber spray gun blowing desulfurization, due to magnesium desulfurizer first in spray gun vaporizer pre-vaporized,
Magnesium metal is discharged in air pocket form from spray gun bottom, is caused the specific surface area of magnesium bubble interface small, be have impact on magnesium metal and pass through
The homogeneous desulfurization that magnesium is dissolved in the interface desulphurization reaction from the bubble interface to molten iron and molten iron of dissolution velocity and magnesium bubble of is anti-
Should；Meanwhile, air pocket discharge causes gasification intraventricular pressure fluctuation, spray gun to swing in vaporizer, and the air pocket of free surface overflows
Cause liquid level big ups and downs, even splash and the escape of magnesium steam, reduce the desulfurization utilization rate of magnesium metal, limit magnesium metal spray
Blow the raising of intensity；Again, during use, spray gun gasification chamber interior walls dry slag is serious, in order to maintain the gasification of vaporizer enough
Space and the stable gasification of magnesium metal, it is necessary to constantly clear up gasification chamber interior walls dry slag, but promote the broken of vaporizer
Damage process, have impact on spray gun service life, performance and production efficiency, is made troubles to production application, added
The difficulty and production cost of production maintenance.
(2) pure magnesium is led directly to during spray gun blowing desulfurization, is not provided with vaporizer because pure magnesium leads directly to spray gun, magnesium granules do not have
The gasification and dissolving for carrying out metallic particles magnesium in pre-vaporized in vaporizer, the technique were floated in metallic particles magnesium molten iron
Journey is completed, and have impact on the utilization rate of magnesium metal；If bubble floating distance and residence time are not enough, it will also cause a large amount of magnesium bubble liquid
Face, which is overflowed, escapes, and brings molten iron splash；Further, since when being blown flow greatly there is bubble merging in gassing current in floating-upward process
, there are moment a large amount of bubbles and overflows liquid level, cause molten iron vigorous splash in clustering phenomena, thus metallic particles magnesium is blown intensity also not
Can be too big.
(3) during magnesium-based and calcium base blowing desulfurization, because the limitation of kinetic energy is stirred in lance ejection flow field, desulfurizing agent is utilized
Efficiency is difficult to further raising, causes sorbent consumption high, and desulfurization effect of desulfurizing agent fails to give full play to, desulfurization production efficiency
Relatively low, desulfurization production cost also has the space further reduced.
For above-mentioned deficiency, related scholar has successively carried out substantial amounts of spray gun structure optimizing research work.For example：For pure
Spray gun present in magnesium vaporizer sweetening process swings big, magnesium steam air pocket liquid level and overflows caused liquid level big ups and downs concussion
The problems such as with seething, the Chinese invention patent of Application No. 200810237411.7 discloses a kind of pure spray particle magnesium desulfurization of molten iron
With gasifying chamber spray gun, it is primarily characterized in that：Vaporizer is shaped as the combined shaped or cylindric of round platform and cylinder, vaporizer
End is spray gun lower part outlet, is provided with 2~12 spray gun lateral outlets on the wall of side, the center line of spray gun lateral outlet with it is contour
The minimum angle in face is 0~60 °, spray gun lateral outlet or is circular port or is slotted eye or is flared hole or is square
Hole.Have the advantages that gas escaped in molten iron uniformly, bubble is continuous, injection is stable, liquid fluctuating is small and splash is few.But from this
Set 2~12 outlets easily to be blocked by gasification chamber interior walls dry slag from the point of view of the structure of patent, on the wall of spray gun side, cause lateral outlet to be arranged
Gas is unstable, while also coming difficult to gasification chamber interior walls dry slag cleaning tape, the report of production application is had no at present.
In order to put forward metallic particles magnesium injection intensity, document " She Fuqinke А Ф, bar Shi Makefu in the straight-through injection of high purity magnesium
А М, horse is admired И А etc., big consumption spray magnesium sulfur removal technology, steel-making, 2013, No6,5-8 ", steel 300 in Taiwan in ladle
Former single jet through type spray gun is replaced to carry out the pure metal spraying metal particles magnesium desulfurization of molten iron using two-nozzle gun on ton hot-metal bottle, in iron
Under conditions of water desulfurization steady production, metallic particles magnesium injection intensity improves 50~120% (up to 16~25kg/min) magnesium and utilized
Rate improves 25~35% (averagely reaching 47.3%), and have correspondingly molten iron spraying desulfurization spraying activity duration, but ton iron gold
The mean consumption of metal particles magnesium is 0.41kg/t, higher by more than 30% than the average value that other steel mills report.
In order to improve magnesium-based and calcium base composite blowing desulfurization kinetics condition, application publication number is in CN102719590
State's patent is driven during blowing desulfurization by electric rotating machine there is provided a kind of inverted T shaped spray gun rotating device and its sulfur method
Inverted T-shaped spray gun carries out the anglec of rotation and rotated for ± 35 °~± 45 ° of periodic reverse, to increase the floating stroke of desulfurizing agent, contracting
The short melt tank mixing time, reduce the splash during being blown and stifled rifle phenomenon；But analyzed by water mould Demonstrator Trials, due to stream stock
Radius of turn is smaller, and injection upper up-flow stock is still located at molten bath center, during to extension desulfurizing agent floating stroke and shortening melt tank mixing
Between it is limited, also have not seen at present actual production report.Document " Sun Xinghong, Xia Xingming, the reason of Longchuanjiang hot-metal bottle rush-harvesting and rush-planting desulfurization
By with putting into practice [J] steels, 2007,42 (1)：27-30 " report 2 spray guns of Baosteel hot-metal bottle rush-harvesting and rush-planting blowing desulfurization and inserted simultaneously
Enter the agent of ladle blowing desulfurization) test effect, compared to conventional single rifle technique, when injection can be greatly reduced in rush-harvesting and rush-planting blowing method
Between and temperature drop, the average pure injection time shorten to 3.25min by 11.70min, and average treatment temperature drop has 14.0 DEG C to be reduced to 4.0
DEG C, the injecting velocity of desulfurization powder reaches 3 times of single rifle injection, but the technique needs to increase a set of blowing device newly.
The above analysis is visible, for production application the pure metal spraying metal particles magnesium sulfur removal technology of two kinds of molten iron its deposit
Magnesium desulfurizer utilization rate is low, vaporizer dry slag, liquid fluctuating acutely, the injection low intrinsic deficiency of intensity, current spray gun knot
Structure research optimum results are not directed to question essence, simply try to slow down or make up；And for magnesium-based, calcium base composite blowing desulfurization
Technique, the continuous improvement with lower procedure to desulfurization production capacity and deep desulfurization proportion requirement, its desulfurization kinetics condition still have compared with
Big optimization space；Meanwhile, gun type needed for different sulfur removal technologies is also not quite similar, and have impact on enterprise's blowing desulfurization production cost
Reduction and different condition under technology popularization and application.
The content of the invention
The purpose of the present invention is not enough to provide a kind of metallic particles magnesium, magnesium-based or calcium-based desulfurizing agent and not of being used for for above-mentioned
Rotary blowing desulfuring spray gun and its application method on same model hot-metal bottle, had both overcome middle-size and small-size hot-metal bottle pure magnesium desulfuration and had used
The vaporizer dry slag that gasifying chamber spray gun injection is brought is safeguarded frequently, liquid fluctuating is violent, spray gun shakes big and critical injection flow
It is small to wait inherent defect, it turn avoid large-scale hot-metal bottle and lead directly to that sorbent utilization in spray gun blowing process is low, magnesium injection low intensity
Deng deficiency, at the same can also greatly improve that magnesium-based and calcium base be compound, desulphurization kinetics condition in mixed injection sulfur removal technology,
Sorbent utilization and production efficiency are improved, production cost is reduced.
A kind of rotary blowing desulfuring spray gun for being applied to different model hot-metal bottle or different desulfurizing agents that the present invention is provided, bag
Include adpting flange, linkage section gun body, body of a gun section gun body and spray gun section, the linkage section gun body, body of a gun section spray
Gun body and spray gun section are followed successively by supervisor and reinforced pipe from the inside to the outside, and supervisor outside line centered on axis is in from inside to outside
Emitting shape is evenly arranged in a plurality of bridging weldment for link enhancement pipe, and the perforate through on reinforced pipe, institute
State the supervisor of spray gun section and strengthen and multiple rotating vanes are symmetrically arranged with pipe outer wall, the rotating vane includes blade metal
Multiple interpolation type jet pipes are symmetrically arranged with core, the side wall of the supervisor bottom, the interpolation type jet pipe passes through blade metal core,
Graphite bush, the reinforced pipe of the body of a gun section gun body are provided with interpolation type jet pipe outer wall on the outside of the blade metal core
With the anchoring piece on blade metal outer core, fire proofed wood spray gun lining is poured on body of a gun section gun body and spray gun section outer wall,
And fire proofed wood spray gun lining covering anchoring piece.The anchoring piece includes V-arrangement anchoring piece and double V-arrangement anchoring pieces, the V-arrangement anchoring piece group
Welded with double V-arrangement anchoring piece groups in blade metal core outer surface Heterogeneous Permutation.
Further, the supervisor, which is stretched on spray gun bottom, the supervisor bottom mouth of pipe, is provided with supervisor's end socket.
Yet further, the enhancing bottom of the tube is provided with enhancing channel closure, the enhancing channel closure be welded on supervisor and
Strengthen on tube wall, and inserted including enhancing channel closure above formula jet pipe.
Yet further, the quantity of the blade metal core is 2~4.
Yet further, the fire proofed wood spray gun lining is constituted by heat-insulated cushion and the refractory casting bed of material from the inside to the outside,
Heat-insulated cushion and refractory casting bed of material faying face brushing organo-silicon coupling agent；The thickness of the heat-insulated cushion is 2
~5mm.
The application method of rotary blowing desulfuring spray gun of the present invention is：
1) equipment record
Using the rotary blowing desulfuring spray gun of the present invention, the conventional flexible pipe that dusts, connection are installed on the spray gun of the present invention
Flange, swivel joint, rotating driving device and suspension arrangement and body of spray gun rifle；
2) technological parameter is perfect：
(1) metallic particles magnesium molten iron desulfuring technique
(a) for being the pure metal spraying metal particles magnesium molten iron desulfuring technique of middle-size and small-size hot-metal bottle gasifying chamber spray gun, metallic particles originally
Percentage composition >=70% that magnesium particle size range is Mg in 0.5~1mm, metallic particles magnesium；Gun insertion depth is controlled, makes jet pipe
Outlet is apart from 200~250mm of tank bottom；Magnesium metal injection intensity increases with the reduction of Mg percentage composition in granular magnesium, can
Selected between the 80~150% of former technique spray gun intensity；According to spray gun jet pipe quantity and the jet gross area, control injection is carried
Atmospheric pressure and flow, spout is averaged, (V1 is necessary minimum critical in metallic particles magnesium intrusion molten iron to jet velocity V ＞ V1
Speed), specifically can according to document " Wu Wei, Hu Yanbin, blowing process desulfurizing iron Kinetic analysis research, steel, 2006,
The calculation formula or chart that No11,17-19 " is provided carry out V1 calculating or selection of tabling look-up；Other technological parameters and control mode
It is identical with former technique.
(b) for being the pure metal spraying metal particles magnesium molten iron desulfuring technique of medium-and-large-sized hot-metal bottle single jet through type spray gun originally, gold
Percentage composition >=70% that metal particles magnesium particle size range is Mg in 0.5~1.6mm, metallic particles magnesium；Control gun insertion depth,
Make jet pipe outlet apart from 250~350mm of tank bottom；Magnesium metal is blown intensity with the reduction of Mg percentage composition in granular magnesium
Increase, can be selected between former technique is blown the 100~200% of intensity；According to spray gun jet pipe quantity and the jet gross area, control
System injection nebulizer gas pressure and flow, spout is averaged, (V1 is that metallic particles magnesium is invaded necessary in molten iron to jet velocity V ＞ V1
Minimum critical speed), specifically can be according to document " Wu Wei, Hu Yanbin, the research of blowing process desulfurizing iron Kinetic analysis, steel
Iron, 2006, No11, the calculation formula or chart that 17-19 " is provided carry out V1 calculating or selection of tabling look-up；Other technological parameters and
Control mode is identical with former technique.
(2) calcium base and magnesium-based are combined or mixed injection Desulphuring Process of Molten Iron
(a) it is combined or mixed injection Desulphuring Process of Molten Iron for calcium base and magnesium-based, can be defeated in desulfurizing agent raw material and gas-solid
Send under conditions of constant rate, injection intensity more than 50% can be improved, while improving sorbent utilization.
3) the specifically used method of rotary blowing desulfuring spray gun
(1) Desulfurization Control Systems have been calculated after injection data, start blowing desulfurization operation；Injection parameters are according to specific
Desulfurizing agent is different with hot-metal bottle amount of capacity, is selected according to above-mentioned technological parameter.
(2) after desulfurizing agent blanking speed reaches setting value, rotating driving device control spray gun carries out lasting rotation in the same direction,
Rotary speed is 5-90r/min.
(3) blowing desulfurization dosage is reached after setting value, and rotating driving device control spray gun stops operating.
(4) other processing steps are identical with conventional blowing desulfurization method.
The beneficial effects of the present invention are：
1) present invention makes bubble and desulfurizing agent floating track by straight by being rotated during rotary desulfurization spray gun blowing desulfurization
Line is changed into spiral, extends desulfurizing agent floating stroke and time；Continued by the setting of spray gun rotating vane with the same direction
Rotation, makes to produce downward draft in molten bath, further hinders the floating of desulfurizing agent, while accelerating desulfurizing agent and molten iron in molten bath
Mixing.
2) present invention reduces the floating intensity of sub-thread blowing gas by the settings of the multiple spouts of spray gun, weaken because
Single current stock concentrates caused liquid fluctuating and splash, improves desulfurizing agent injection intensity；End of rotating blade is located at by spout,
Desulfurizing agent spiral floating radial course is further increased, upper up-flow stock is floated relative to molten bath bias, shortens the mixing in molten bath
Time, meanwhile, tangential velocity during nozzle outlet rotary is increased, the direction of motion and speed difference of desulfurizing agent and injection bubble is exacerbated
Value, improve desulfurizing agent penetrates ratio.
3) the lasting certain radius of interpolation type jet pipe spout of the invention, which is rotated, also reduce further single current stock floating
Concentrated to stream stock during liquid level, further weaken molten iron level fluctuation.
4) present invention is designed by the heat-insulated cushion of refractory material working lining and the double-decker of the refractory casting bed of material, is carried
The high thermal conduction resistance of refractory material working lining, reduces the actual work temperature of the hardwares such as rifle core, blade metal core, carries
High spray gun high temperature resistant property and the damaged ability of anti-thermal shock crackle；It is organic by heat-insulated cushion and refractory casting bed of material faying face
The brushing of silicone couplet, enhances the interface bond strength of heat-insulated cushion and the refractory casting bed of material, improves refractory material work
Make the combination property and resisting breakage ability served as a contrast, reach the purpose of the service life of extension spray gun.By metal insert Nozzle Design,
It is easy to the jet pipe withdrawing after blocking during jet pipe use to change；Arranged by the technology of metal insert injection tube overcoat graphite bush
Apply, using the anti-wettability energy of graphite, prevent from being blown blockage, further improve the performance of spray gun.
In summary, spray gun of the invention is greatly improved during blowing desulfurization the floating interval of floating dock of desulfurizing agent and penetrated
Bubble ratio, hence it is evident that shorten the mixing time in molten bath, significantly improves the desulfurization kinetics condition of desulphurization reaction, reduces iron
Water level is fluctuated, and the desulfurization new method of invention is can be used for different desulfurizing agents and without the blowing desulfurization on size hot-metal bottle；Gram
Taken middle-size and small-size hot-metal bottle pure magnesium desulfuration using gasifying chamber spray gun be blown the vaporizer dry slag that brings safeguard frequently, liquid fluctuating it is acute
Strong, spray gun shakes the inherent defects such as big and critical injection flow is small；Avoid large-scale hot-metal bottle and lead directly to desulfurizing agent in blowing process
Utilization rate is low, the magnesium injection low deficiency of intensity；Also greatly improve that magnesium-based and calcium base be compound, desulfurization in mixed injection sulfur removal technology
Reacting dynamics condition, improves sorbent utilization and production efficiency, reduces production cost.Thus, the present invention is applicable
Different quality metal granular magnesiums are directly blown Desulphuring Process of Molten Iron and magnesium-based, calcium-based desulfurizing agent injection molten iron on different hot-metal bottles
Sulfur removal technology, reaches that improvement desulfurizing iron dynamic conditions, injection are stable, with low cost, desulfurization is efficient, spray gun service life is long
Etc. purpose.
Brief description of the drawings
Fig. 1 is the structural representation of rotary blowing desulfuring spray gun；
Fig. 2 schemes for Fig. 1 A-A；
In figure, adpting flange 1, linkage section gun body 2, body of a gun section gun body 3, spray gun section 4, supervisor 5, supervisor's end socket
5.1st, reinforced pipe 6, enhancing channel closure 6.1, rotating vane 7, blade metal core 7.1, interpolation type jet pipe 8, interpolation type jet pipe 8, stone
Black sleeve pipe 8.1, anchoring piece 9, fire proofed wood spray gun lining 10, bridging weldment 11,.
Embodiment
In order to preferably explain the present invention, below in conjunction with the specific embodiment main contents that the present invention is furture elucidated, but
Present disclosure is not limited solely to following examples.
Embodiment 1
As shown in Fig. 1~2, a kind of rotary blowing desulfuring spray gun for being applied to different model hot-metal bottle or different desulfurizing agents,
Including adpting flange 1, linkage section gun body 2 and body of a gun section gun body 3 and spray gun section 4, linkage section gun body 2, the body of a gun
Section gun body 3 and spray gun section 4 are followed successively by supervisor 5 and reinforced pipe 6 from the inside to the outside, the outside of supervisor 5 centered on axis line by interior
The a plurality of bridging weldment 11 for link enhancement pipe 6 outwards is evenly arranged in emitting shape, and passes through the perforate on reinforced pipe 6
It is interior, 4 rotating vanes 7 are symmetrically arranged with the supervisor 5 of spray gun section 4 and the outer wall of reinforced pipe 6, rotating vane 7 includes blade metal
4 interpolation type jet pipes 8 are symmetrically arranged with core 7.1, the side wall for being responsible for 5 bottoms, interpolation type jet pipe 8 passes through blade metal core 7.1,
Graphite bush 8.1, the reinforced pipe of body of a gun section gun body 3 are provided with the outer wall of interpolation type jet pipe 8 in the outside of blade metal core 7.1
6 and the outer wall of blade metal core 7.1 on anchoring piece 9, the body of a gun section gun body 3 and spray gun section 4 outer walls on pour fire proofed wood spray gun
Lining 10, and fire proofed wood spray gun lining 10 covers anchoring piece 9.Anchoring piece includes V-arrangement anchoring piece and double V-arrangement anchoring pieces, V-arrangement anchoring piece group
Welded with double V-arrangement anchoring piece groups in blade metal core outer surface Heterogeneous Permutation.
Supervisor 5 stretches on spray gun bottom, the 5 bottom mouths of pipe of supervisor and is provided with supervisor's end socket 5.1.
The bottom of reinforced pipe 6 is provided with enhancing channel closure 6.1, and enhancing channel closure 6.1 is welded on supervisor 5 and the tube wall of reinforced pipe 6
On, and enhancing channel closure 6.1 is in the top of interpolation type jet pipe 8.
Yet further, fire proofed wood spray gun lining 10 is constituted by heat-insulated cushion and the refractory casting bed of material from the inside to the outside, every
Heat buffered layer and the refractory casting bed of material faying face brushing organo-silicon coupling agent；The thickness of heat-insulated cushion is 2~5mm.
The application method of rotary blowing desulfuring spray gun of the present invention is：
1) equipment record
Using the rotary blowing desulfuring spray gun of the present invention, the conventional flexible pipe that dusts, connection are installed on the spray gun of the present invention
Flange, swivel joint, rotating driving device and suspension arrangement and body of spray gun rifle (6)；
2) technological parameter is perfect：
(1) metallic particles magnesium molten iron desulfuring technique
(a) for being the pure metal spraying metal particles magnesium molten iron desulfuring technique of middle-size and small-size hot-metal bottle gasifying chamber spray gun, metallic particles originally
Percentage composition >=70% that magnesium particle size range is Mg in 0.5~1mm, metallic particles magnesium；Gun insertion depth is controlled, makes jet pipe
Outlet is apart from 200~250mm of tank bottom；Magnesium metal injection intensity increases with the reduction of Mg percentage composition in granular magnesium, can
Selected between the 80~150% of former technique spray gun intensity；According to spray gun jet pipe quantity and the jet gross area, control injection is carried
Atmospheric pressure and flow, spout is averaged, (V1 is necessary minimum critical in metallic particles magnesium intrusion molten iron to jet velocity V ＞ V1
Speed), specifically can according to document " Wu Wei, Hu Yanbin, blowing process desulfurizing iron Kinetic analysis research, steel, 2006,
The calculation formula or chart that No11,17-19 " is provided carry out V1 calculating or selection of tabling look-up；Other technological parameters and control mode
It is identical with former technique；
(b) for being the pure metal spraying metal particles magnesium molten iron desulfuring technique of medium-and-large-sized hot-metal bottle single jet through type spray gun originally, gold
Percentage composition >=70% that metal particles magnesium particle size range is Mg in 0.5~1.6mm, metallic particles magnesium；Control gun insertion depth,
Make jet pipe outlet apart from 250~350mm of tank bottom；Magnesium metal is blown intensity with the reduction of Mg percentage composition in granular magnesium
Increase, can be selected between former technique is blown the 100~200% of intensity；According to spray gun jet pipe quantity and the jet gross area, control
System injection nebulizer gas pressure and flow, spout has averagely been sprayed firing rate degree V ＞ V1, (V1 is required in metallic particles magnesium intrusion molten iron
Minimum critical speed), specifically can according to document " Wu Wei, Hu Yanbin, blowing process desulfurizing iron Kinetic analysis research,
Steel, 2006, No11, the calculation formula or chart that 17-19 " is provided carry out V1 calculating or selection of tabling look-up；Other technological parameters
It is identical with former technique with control mode.
(2) calcium base and magnesium-based are combined or mixed injection Desulphuring Process of Molten Iron
(a) it is combined or mixed injection Desulphuring Process of Molten Iron for calcium base and magnesium-based, can be defeated in desulfurizing agent raw material and gas-solid
Send under conditions of constant rate, injection intensity more than 50% can be improved, while improving sorbent utilization.
3) the specifically used method of rotary blowing desulfuring spray gun
(1) Desulfurization Control Systems have been calculated after injection data, start blowing desulfurization operation；Injection parameters are according to specific
Desulfurizing agent is different with hot-metal bottle amount of capacity, is selected according to above-mentioned technological parameter.
(2) after desulfurizing agent blanking speed reaches setting value, rotating driving device control spray gun carries out lasting rotation in the same direction,
Rotary speed is 5-90r/min.
(3) blowing desulfurization dosage is reached after setting value, and rotating driving device control spray gun stops operating.
(4) other processing steps are identical with conventional blowing desulfurization method.
Embodiment 2
The present embodiment is substantially the same manner as Example 1, and difference is：Rotating vane 7 and the interpolation type spray of rotary spray gun
The number of pipe 8 is 3.
Embodiment 3
The present embodiment is substantially the same manner as Example 1, and difference is：Rotating vane 7 and the interpolation type spray of rotary spray gun
The number of pipe 8 is 2.
Other unspecified parts are prior art.Although above-described embodiment is made that to the present invention and retouched in detail
State, but it is only a part of embodiment of the invention, rather than whole embodiments, people can also according to the present embodiment without
Other embodiment is obtained under the premise of creativeness, these embodiments belong to the scope of the present invention.
Claims (3)
1. a kind of rotary blowing desulfuring spray gun for being applied to different model hot-metal bottle or different desulfurizing agents, including adpting flange (1),
Linkage section gun body (2), body of a gun section gun body (3) and spray gun section (4), it is characterised in that：The linkage section gun body
(2), body of a gun section gun body (3) and spray gun section (4) are followed successively by supervisor (5) and reinforced pipe (6), the supervisor (5) from the inside to the outside
Outside line centered on axis is evenly arranged a plurality of bridging weldment for link enhancement pipe (6) in emitting shape from inside to outside
, and the bridging weldment (11) is through in the perforate on reinforced pipe (6), the supervisor (5) of the spray gun section (4) and enhancing (11)
Multiple rotating vanes (7) are symmetrically arranged with pipe (6) outer wall, the rotating vane (7) includes blade metal core (7.1), described
Multiple interpolation type jet pipes (8) are symmetrically arranged with the side wall for being responsible for (5) bottom, the interpolation type jet pipe (8) passes through blade metal
Graphite bush (8.1) is provided with interpolation type jet pipe (8) outer wall on the outside of core (7.1), the blade metal core (7.1), it is described
Anchoring piece (9) on the reinforced pipe (6) and blade metal core (7.1) outer wall of body of a gun section gun body (3), the body of a gun section spray gun
Fire proofed wood spray gun lining (10), and fire proofed wood spray gun lining (10) covering anchoring piece (9) are poured on body (3) and spray gun section (4) outer wall；
The supervisor (5), which is stretched into, is provided with supervisor's end socket (5.1) on spray gun bottom, supervisor (5) bottom mouth of pipe；The reinforced pipe
(6) bottom is provided with enhancing channel closure (6.1), and the enhancing channel closure (6.1) is welded on supervisor (5) and reinforced pipe (6) tube wall
On, and enhancing channel closure (6.1) is above interpolation type jet pipe (8).
2. it is applied to the rotary blowing desulfuring spray gun of different model hot-metal bottle or different desulfurizing agents according to claim 1, its
It is characterised by：The quantity of the blade metal core (7.1) is 2~4.
3. it is applied to the rotary blowing desulfuring spray gun of different model hot-metal bottle or different desulfurizing agents according to claim 1, its
It is characterised by：Fire proofed wood spray gun lining (10) is constituted by heat-insulated cushion and the refractory casting bed of material from the inside to the outside, it is described every
Heat buffered layer and the refractory casting bed of material faying face brushing organo-silicon coupling agent；The thickness of the heat-insulated cushion is 2~5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510653976.3A CN105132609B (en) | 2015-10-10 | 2015-10-10 | Suitable for different model hot-metal bottle or the rotary blowing desulfuring spray gun of different desulfurizing agents |
Applications Claiming Priority (1)
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| CN106834605B (en) * | 2017-03-31 | 2018-11-30 | 四川鸿舰重型机械制造有限责任公司 | A kind of rotary feeding device for vanadium-titanium-iron-water desulfurization |
| CN109136469A (en) * | 2018-10-24 | 2019-01-04 | 东北大学 | A kind of powder spraying stirring desulfurizer |
| CN113403452A (en) * | 2021-07-27 | 2021-09-17 | 攀钢集团研究院有限公司 | Multi-section multi-speed molten iron rotary blowing desulfurization method |
| CN113846203B (en) * | 2021-10-28 | 2022-08-02 | 攀钢集团西昌钢钒有限公司 | Metallurgical mechanical stirring, blowing and desulfurizing stirrer |
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| CN201254588Y (en) * | 2008-08-08 | 2009-06-10 | 陈树村 | Rotary spray gun for molten iron desulphurization |
| CN101603111A (en) * | 2009-02-17 | 2009-12-16 | 武汉钢铁(集团)公司 | A kind of stirrer for desulphurization of molten iron |
| CN102154533A (en) * | 2011-05-09 | 2011-08-17 | 武汉钢铁(集团)公司 | Jet stirrer for mechanical stirring and desulfurizing of molten iron |
| CN104388624A (en) * | 2014-12-04 | 2015-03-04 | 武汉钢铁(集团)公司 | Direct injection molten iron desulphurization spray gun |
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