CN203096107U - Blowing desulfurization spray gun for torpedo ladle - Google Patents
Blowing desulfurization spray gun for torpedo ladle Download PDFInfo
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- CN203096107U CN203096107U CN 201320070903 CN201320070903U CN203096107U CN 203096107 U CN203096107 U CN 203096107U CN 201320070903 CN201320070903 CN 201320070903 CN 201320070903 U CN201320070903 U CN 201320070903U CN 203096107 U CN203096107 U CN 203096107U
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Abstract
The utility model discloses a blowing desulfurization spray gun for a torpedo ladle. The spray gun comprises a reversed T-shaped spray gun body with a surface coated by a vertical fireproof gun line, wherein horizontal blowing tubes are symmetrically arranged at the bottom of the reversed T-shaped spray gun body. The horizontal blowing tube comprises a horizontal metal tube communicated with the nozzle of the reversed T-shaped spray gun body. The horizontal metal tube is coated by a horizontal fireproof gun line in the periphery. The horizontal fireproof gun line and the vertical horizontal fireproof gun line are integrally formed. The spray gun provided by the utility model is simple and convenient to implement, and dynamic condition of blowing desulfurization for torpedo ladle is improved and technical-economic indicators of blowing desulfurization for torpedo ladle are improved, and the blowing desulfurization spray gun can be widely applied to the technical field of molten iron pretreatment.
Description
Technical field
The utility model relates to the hot metal pretreatment technical field, refers to a kind of implemented by powder injection in torpedo desulphurization spray gun particularly.
Background technology
Sulphur is the harmful element in most steel grades, and it is present in the steel with the form of sulfide, and the quality of steel is had considerable influence.At present, external desulfurization of hot metal has become indispensable technique means in low-sulfur steel (S≤0.010%) or ultra-low sulphur steel (S≤0.005%) production.In numerous desulfurization methods, the torpedo jar TDS top blast desulfurization technology blowing desulfurization technology that is Japanese Nippon Steel outside a kind of molten iron stove of developing at the concrete mechanism situation of torpedo jar metal mixer car in 1971, its major technique feature are to utilize the vertical diplopore desulphurization spray gun of molten iron depths that inserts in the torpedo jar desulfurization powder is sprayed into the molten iron depths to carry out desulfurizing iron.This desulfurization method processing set-up compactness is smooth and easy, mechanical means is simple, hot metal temperature drop is low, and can adapt to various sweetening agent preferably, thereby be specially adapted to large batch of hot metal pretreatment, though adopt the desulfurization of TDS top blast can cooperate the production demand of mammoth conveter well, in actual production, also exist some comparatively serious problems.
As everyone knows, for molten iron spraying desulfurization spraying, under certain thermodynamics and kinetics (desulfurization powder and temperature etc.) condition, desulfurizing iron efficient is by the pretreatment desulfurizing transmission dynamic conditions decision of dusting, because torpedo jar cavity shape is very long and narrow, and the spray gun spout is positioned at molten bath central authorities, cause blowing gas stream thigh far away apart from torpedo jar two ends distance, influenced mixing effect, caused that sorbent consumption height, molten iron return problems such as the sulphur ratio is big end regions.And the flow state that carrier gas and pretreating agent float in molten iron in the implemented by powder injection in torpedo sweetening process of all not reporting for work both at home and abroad at present.Test by implemented by powder injection in torpedo desulfurization water mould, observe in the torpedo jar come-up track and the flow state of carrier gas and pretreating agent in the hot metal pretreatment process meticulously, observe and find: in the blowing desulfurization process, gas is after the ejection of spray gun both sides spout, form two horizontal direction gas streams of similar " butterfly ", because the liquid barrier effect, its momentum along continuous straight runs successively decreases; Simultaneously, gas is subjected to the buoyancy of liquid effect and upwards flows, and in the floating-upward process, along with reducing of the liquid level degree of depth, the pressure that gas is subjected to reduces, and flow range increases; Motion of air bubbles has driven near the motion of the liquid of spray gun, forms intensive to the upper reaches thigh; Along with the continuous come-up of two tributary thighs, its horizontal direction momentum continues to reduce; Two tributary thighs collide, merge and form a main flow mutually near spray gun behind the come-up certain distance, this process can consume portion of energy, is unfavorable for stirring giving full play to of kinetic energy, also can cause the wearing and tearing of 1-1.5m place, spout top rifle lining simultaneously; After the main flow that forms when the gas-liquid two-phase district arrived liquid level, gas overflowed liquid level, and the liquid of arrival liquid level is driven to torpedo jar two side flow, is aspirated by the center upwelling at last, circulates thereby formed in torpedo jar jar.By above experiment as can be known, because the restriction of the long and narrow cavity shape of torpedo jar, problem such as ubiquity desulfurization dynamic conditions difference has hindered the raising of desulfurization production efficiency in the actual use of implemented by powder injection in torpedo desulfurization, has limited the production of high value added product.
At the problems referred to above, publication number is the Chinese patent of CN1595042A, disclose a kind of torpedo jar and sprayed desulphurization spray gun with the top, it is characterized in that to the different heights of solution surface one deck or which floor compacting hole being set at the powder injection hole that the torpedo jar sprays spray gun with the top, compacting hole is connected by pipeline and the neutral source of the gas that stirs.The compacting hole that increases can play the compacting pulvis and the pulvis band is got farther effect in the blowing desulfurization process, the air-flow that powder injection hole is come out breaks up simultaneously, stir gas by compacting hole winding-up neutral, thereby the melt to far-end provides stronger stirring energy, improve the sweetening agent residence time in the hope of reaching, improve the reaction effect of implemented by powder injection in torpedo desulfurization.Publication number is the Chinese patent of CN101445859A, discloses a kind of auxiliary desulphurizing device implemented by powder injection in torpedo and technology.Concrete technical scheme is: utilize on the basis of top blowing device, bottom or bottom side at the torpedo jar are symmetrical arranged 2 ventilative commentaries on classics, each ventilative commentaries on classics by pipeline communicates with the buffering gas tank, and the head or the bottom of buffering gas tank communicate with nitrogen or argon gas source of the gas by valve.During blowing desulfurization, when adopting the top spray, also adopt nitrogen or argon gas to jet by the ventilative commentaries on classics that is provided with, thereby molten iron is caused strong agitation, reduce the dead band, shorten mixing time, improve the dynamic conditions of metallurgical reaction in the torpedo jar, reduce back sulphur and improve desulphurization reaction efficient.Publication number is the Chinese patent of CN1461812A, in order to improve in the TDS method molten iron flow field in the torpedo jar, shorten mixing time, to reduce of the influence of dead band, two ends, thereby proposed to utilize the air supply brick rare gas element of in the torpedo jar, jet to strengthen the technical measures of molten iron stirring to sweetening effectiveness.Be specially: at torpedo pot bottom and sidepiece the permeable refractory brick is installed, in the spray gun blowing desulfurization, is sprayed into rare gas element to molten iron inside by above-mentioned gas permeable brick.This technology is by the gas of re-blowing multi-facetedly, increased the stirring kinetic energy in torpedo jar dead band, thereby optimized the molten iron flow field of torpedo jar inside, made good circulation of the inner formation of molten iron, enlarge the reaction interface of sweetening agent and molten iron, promoted the abundant reaction of sweetening agent and molten iron.Though above-mentioned patented technology can play the effect of improving dead band, torpedo jar two ends dynamic conditions to a certain extent, coagulate iron, obstruction and potential safety hazard etc. and fail large-scale application in actual production because technical scheme is implemented the complexity element of particularly blowing.
Summary of the invention
The purpose of this utility model is exactly the implemented by powder injection in torpedo desulphurization spray gun that will provide a kind of and be easy to implement, can improve implemented by powder injection in torpedo desulfurization dynamic conditions, improve implemented by powder injection in torpedo desulfurization technology economic target.
For achieving the above object, a kind of implemented by powder injection in torpedo desulphurization spray gun that the utility model is designed, comprise that the surface is coated with the inverted T-shaped spray gun body of vertical fire-resistant rifle lining, the bottom of described inverted T-shaped spray gun body is symmetrically arranged with level winding-up pipe, described level winding-up pipe comprises the horizontal metal pipe that is connected with inverted T-shaped spray gun body spout, described horizontal metal pipe periphery is coated with the fire-resistant rifle lining of level, and the fire-resistant rifle lining of described level serves as a contrast the structure that is one of the forming with vertical fire-resistant rifle.
As preferred version, described horizontal metal tube-surface is fixed with V-arrangement anchoring piece and two V-arrangement anchoring piece, the height of described V-arrangement anchoring piece and two V-arrangement anchoring pieces is 2/3 of the fire-resistant rifle lining of a level thickness, and described V-arrangement anchoring piece and two V-arrangement anchoring pieces are that the heat-resistant alloy wire of 2 ~ 4mm is made by diameter.
Further, described V-arrangement anchoring piece and two V-arrangement anchoring piece are welded on the horizontal metal tube-surface for 60 ° by axial spacing 25 ~ 30mm staggered arrangement and circumferential angle.
Again further, described horizontal metal tube-surface is coated with to be brushed with to burn and loses coating.
Further, the end face of the fire-resistant rifle lining of described level is the rounding off structure.
Further, the length of described horizontal metal pipe is 1.5 ~ 2.5 times of inverted T-shaped spray gun body cross-section radius.
Further, the length of described horizontal metal pipe is 2 times of inverted T-shaped spray gun body cross-section radius.
Principle of work of the present utility model is such: by the bottom at inverted T-shaped spray gun body symmetric level winding-up pipe is set, increase the radial flow distance of spraying carrier gas and pretreating agent, prolong the residence time and reaction times in pretreating agent come-up track and the molten iron, avoid influencing each other in the two stream strand uphill process, improve the utilization ratio that blowing gas stirs kinetic energy, improve implemented by powder injection in torpedo desulfurization dynamic conditions, reduce pretreating agent consumption and hot metal pretreatment cost.Simultaneously, owing to of the shortening of stream thigh with dead band, two ends distance, near the stirring and evenly mixing of the molten iron dead band, end will more be helped, and since stream strand apart from the spray gun body apart from increase, can avoid in the blowing gas stream strand floating-upward process the erosive wear of the fire-resistant rifle lining of level end face wall, prolong spray gun work-ing life.By in level winding-up pipe, taking the different V-arrangement anchoring piece of structure and two V-arrangement anchoring pieces, the bonding strength between the fire-resistant rifle lining of fortified water flat metal pipe and level, the comprehensive strength and the rigidity of pipe of jetting of improving the standard prevents the flexural deformation in the use; By burn the measure of losing coating in the brushing of horizontal metal tube-surface, utilize the bake process floating coat to burn and lose residual slight gap, make that the nonsynchronous phenomenon of thermal expansion is eased between the fire-resistant rifle of horizontal metal pipe and the level lining, reduce the harm that structural stress brought in the implemented by powder injection in torpedo desulphurization spray gun.End face by the fire-resistant rifle lining of level in the level winding-up pipe is set to the rounding off structure, having slowed down in the winding-up stream strand floating-upward process erosive wear process to level winding-up pipe end face.By above-mentioned measure, finally reach and improve the implemented by powder injection in torpedo pretreating effect and guarantee the spray gun purpose in work-ing life.
Advantage of the present utility model is: the utility model is easy to implement, and has improved implemented by powder injection in torpedo pre-treatment dynamic conditions, has improved implemented by powder injection in torpedo desulfurization technology economic target.
Description of drawings
Fig. 1 is the structural representation of the utility model implemented by powder injection in torpedo desulphurization spray gun;
Fig. 2 is the structure enlarged diagram of level winding-up pipe among Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Referring to Fig. 1 to Fig. 2, implemented by powder injection in torpedo desulphurization spray gun of the present utility model comprises inverted T-shaped spray gun body 1 and level winding-up pipe 2.
Described inverted T-shaped spray gun body 1 surface is coated with vertical fire-resistant rifle lining 11, described level winding-up pipe 2 is symmetricly set in the bottom of inverted T-shaped spray gun body 1, described level winding-up pipe 2 comprises the horizontal metal pipe 21 that is connected with inverted T-shaped spray gun body 1 spout, described horizontal metal pipe 21 is seamless pipe, material is a plain carbon stool, and its length is 1.5 times of inverted T-shaped spray gun body 1 cross section radius.Described horizontal metal pipe 21 peripheries are coated with the fire-resistant rifle of level lining 22, the fire-resistant rifle lining 22 of described level and vertical fire-resistant rifle lining 11 structure that is one of the forming.The end face of the fire-resistant rifle lining 22 of described level is the rounding off structure.
Described horizontal metal pipe 21 surfaces are provided with V-arrangement anchoring piece 23 and two V-arrangement anchoring piece 24, the height of V-arrangement anchoring piece 23 and two V-arrangement anchoring pieces 24 is that the fire-resistant rifle of level serves as a contrast 2/3 of 22 thickness, get this height value and be when found through experiments this height anchoring effect preferably and V-arrangement anchoring piece 23 and two V-arrangement anchoring piece 24 ends can not melt, V-arrangement anchoring piece 23 and two V-arrangement anchoring pieces 24 are that the heat-resistant alloy wire of 2mm is made by diameter, and described V-arrangement anchoring piece 23 and two V-arrangement anchoring pieces 24 are pressed axial spacing 25 ~ 30mm staggered arrangement, and circumferentially angle is welded on horizontal metal pipe 21 surfaces for 60 °.
Described horizontal metal pipe 21 external coatings have the mistake of burning coating 25.Described burning mistake coating 25 is made up of machine oil and polypropylene powder, and wherein, the weight percent of machine oil is 90%, and the weight percent of polypropylene powder is 10%.
In order to guarantee the enforcement of abovementioned technology, inverted T-shaped spray gun body 1 and denomination of invention are that " molten iron spraying desulfurization spraying gun ", the patent No. are that ZL200710051992.0 and denomination of invention are that " self-cooling iron liquid pretreating spray gun ", the patent No. are that the spray gun structure of the two spouts of inverted T-shaped in two patents of ZL200610018623.7 is identical, and to take denomination of invention be that " refractory castable for desulfurizing spray gun ", the patent No. are the vertical integrated poured moulding of material mentioned in the ZL03118869.9 patent.
By bottom symmetric level winding-up pipe 2 is set at inverted T-shaped spray gun body 1, increase the radial flow distance of spraying carrier gas and pretreating agent, prolong the residence time and reaction times in pretreating agent come-up track and the molten iron, avoid influencing each other in the two stream strand uphill process, improve the utilization ratio that blowing gas stirs kinetic energy, improve torpedo jar (not shown) blowing desulfurization dynamic conditions, reduce pretreating agent consumption and hot metal pretreatment cost.Simultaneously, owing to of the shortening of stream thigh with dead band, two ends distance, near the stirring and evenly mixing of the molten iron dead band, end will more be helped, and since stream strand apart from the spray gun body apart from increase, can avoid in the blowing gas stream strand floating-upward process the fire-resistant rifle of level being served as a contrast the erosive wear of 22 end face walls, prolong spray gun work-ing life.By in level winding-up pipe 2, taking the different V-arrangement anchoring piece of structure 23 and two V-arrangement anchoring piece 24, bonding strength between the fire-resistant rifle lining 22 of fortified water flat metal pipe 21 and level, 2 comprehensive strength and rigidity is managed in the winding-up of improving the standard, and prevents the flexural deformation in the use; By burn the measure of losing coating 25 at horizontal metal pipe 21 external coatings, utilize the bake process floating coat to burn and lose residual slight gap, make that the nonsynchronous phenomenon of thermal expansion is eased between the fire-resistant rifle of horizontal metal pipe 21 and the level lining 22, reduce the harm that structural stress brought in the implemented by powder injection in torpedo desulphurization spray gun.End face by the fire-resistant rifle lining 22 of level in the level winding-up pipe 2 is arranged to the rounding off structure, having slowed down in the winding-up stream strand floating-upward process erosive wear process to level winding-up pipe 2 end faces.By above-mentioned measure, finally reach and improve the implemented by powder injection in torpedo pretreating effect and guarantee the spray gun purpose in work-ing life.
Present embodiment is substantially the same manner as Example 1, and its difference is: described horizontal metal pipe 21 length are 2 times of inverted T-shaped spray gun body 1 cross section radius.V-arrangement anchoring piece 23 and two V-arrangement anchoring pieces 24 are that the heat-resistant alloy wire of 3mm is made by diameter, and described V-arrangement anchoring piece 23 and two V-arrangement anchoring pieces 24 are pressed axial spacing 27mm staggered arrangement.Form the machine oil of burning mistake coating 25 and the weight percent of polypropylene powder and be respectively 92%, the weight percent of polypropylene powder is 8%.
Embodiment 3
Present embodiment is substantially the same manner as Example 1, and its difference is: described horizontal metal pipe 21 length are 2.5 times of inverted T-shaped spray gun body 1 cross section radius.V-arrangement anchoring piece 23 and two V-arrangement anchoring pieces 24 are that the heat-resistant alloy wire of 4mm is made by diameter, and described V-arrangement anchoring piece 23 and two V-arrangement anchoring pieces 24 are pressed axial spacing 30mm staggered arrangement.Form the machine oil of burning mistake coating 25 and the weight percent of polypropylene powder and be respectively 99%, the weight percent of polypropylene powder is 1%.
Claims (7)
1. implemented by powder injection in torpedo desulphurization spray gun, comprise that the surface is coated with the inverted T-shaped spray gun body (1) of vertical fire-resistant rifle lining (11), it is characterized in that: the bottom of described inverted T-shaped spray gun body (1) is symmetrically arranged with level winding-up pipe (2), described level winding-up pipe (2) comprises the horizontal metal pipe (21) that is connected with inverted T-shaped spray gun body (1) spout, described horizontal metal pipe (21) periphery is coated with the fire-resistant rifle of level lining (22), the fire-resistant rifle lining of described level (22) and vertical fire-resistant rifle lining (11) structure that is one of the forming.
2. implemented by powder injection in torpedo desulphurization spray gun according to claim 1, it is characterized in that: described horizontal metal pipe (21) surface is fixed with V-arrangement anchoring piece (23) and two V-arrangement anchoring piece (24), the height of described V-arrangement anchoring piece (23) and two V-arrangement anchoring pieces (24) is 2/3 of the fire-resistant rifle lining of level (22) thickness, and described V-arrangement anchoring piece (23) and pair V-arrangement anchoring piece (24) are that the heat-resistant alloy wire of 2 ~ 4mm is made by diameter.
3. implemented by powder injection in torpedo desulphurization spray gun according to claim 2 is characterized in that: described V-arrangement anchoring piece (23) and two V-arrangement anchoring piece (24) are welded on horizontal metal pipe (21) surface for 60 ° by axial spacing 25 ~ 30mm staggered arrangement and circumferential angle.
4. according to each described implemented by powder injection in torpedo desulphurization spray gun in the claim 1 to 3, it is characterized in that: described horizontal metal pipe (21) external coating has the mistake of burning coating (25).
5. according to each described implemented by powder injection in torpedo desulphurization spray gun in the claim 1 to 3, it is characterized in that: the end face of the fire-resistant rifle lining of described level (22) is the rounding off structure.
6. according to each described implemented by powder injection in torpedo desulphurization spray gun in the claim 1 to 3, it is characterized in that: the length of described horizontal metal pipe (21) is 1.5 ~ 2.5 times of inverted T-shaped spray gun body (1) cross section radius.
7. implemented by powder injection in torpedo desulphurization spray gun according to claim 6 is characterized in that: the length of described horizontal metal pipe (21) is 2 times of inverted T-shaped spray gun body (1) cross section radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201320070903 CN203096107U (en) | 2013-02-07 | 2013-02-07 | Blowing desulfurization spray gun for torpedo ladle |
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| CN 201320070903 CN203096107U (en) | 2013-02-07 | 2013-02-07 | Blowing desulfurization spray gun for torpedo ladle |
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| CN203096107U true CN203096107U (en) | 2013-07-31 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152633A (en) * | 2014-07-30 | 2014-11-19 | 武汉钢铁(集团)公司 | Maintenance-free and low-cost molten iron pretreatment spray gun and preparation method thereof |
| CN104894325A (en) * | 2015-05-22 | 2015-09-09 | 武汉钢铁(集团)公司 | Compound jetting and step-by-step jetting desulfurization spray gun for molten iron mixed jetting or online mixing |
| CN107119172A (en) * | 2017-04-24 | 2017-09-01 | 鞍钢股份有限公司 | Refining rotary blowing desulfurization device and desulfurization method |
| CN107190122A (en) * | 2017-04-24 | 2017-09-22 | 鞍钢股份有限公司 | Dephosphorization device and dephosphorization method for refining rotary blowing |
| CN107245544A (en) * | 2017-04-24 | 2017-10-13 | 鞍钢股份有限公司 | Rotary powder injection device for ladle slag modification and modification method |
| CN107267703A (en) * | 2017-04-24 | 2017-10-20 | 鞍钢股份有限公司 | Molten iron dephosphorization device and dephosphorization method for rotary powder injection |
| CN107267711A (en) * | 2017-04-24 | 2017-10-20 | 鞍钢股份有限公司 | Molten steel alloying device and method of rotary blowing powder |
| CN107299192A (en) * | 2017-04-24 | 2017-10-27 | 鞍钢股份有限公司 | Refining rotary blowing deoxidation device and deoxidation method |
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2013
- 2013-02-07 CN CN 201320070903 patent/CN203096107U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152633A (en) * | 2014-07-30 | 2014-11-19 | 武汉钢铁(集团)公司 | Maintenance-free and low-cost molten iron pretreatment spray gun and preparation method thereof |
| CN104152633B (en) * | 2014-07-30 | 2016-04-27 | 武汉钢铁(集团)公司 | Non-maintaining low-cost molten iron pretreatment spray lance and preparation method thereof |
| CN104894325A (en) * | 2015-05-22 | 2015-09-09 | 武汉钢铁(集团)公司 | Compound jetting and step-by-step jetting desulfurization spray gun for molten iron mixed jetting or online mixing |
| CN107119172A (en) * | 2017-04-24 | 2017-09-01 | 鞍钢股份有限公司 | Refining rotary blowing desulfurization device and desulfurization method |
| CN107190122A (en) * | 2017-04-24 | 2017-09-22 | 鞍钢股份有限公司 | Dephosphorization device and dephosphorization method for refining rotary blowing |
| CN107245544A (en) * | 2017-04-24 | 2017-10-13 | 鞍钢股份有限公司 | Rotary powder injection device for ladle slag modification and modification method |
| CN107267703A (en) * | 2017-04-24 | 2017-10-20 | 鞍钢股份有限公司 | Molten iron dephosphorization device and dephosphorization method for rotary powder injection |
| CN107267711A (en) * | 2017-04-24 | 2017-10-20 | 鞍钢股份有限公司 | Molten steel alloying device and method of rotary blowing powder |
| CN107299192A (en) * | 2017-04-24 | 2017-10-27 | 鞍钢股份有限公司 | Refining rotary blowing deoxidation device and deoxidation method |
| CN107245544B (en) * | 2017-04-24 | 2020-09-29 | 鞍钢股份有限公司 | Rotary powder injection device for ladle slag modification and modification method |
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Effective date of registration: 20170718 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: Wuhan Iron & Steel (Group) Corp. |
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Granted publication date: 20130731 Termination date: 20180207 |
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