CN204138696U - The air blowing of assisting slagging-off for molten iron gathers slag spray gun - Google Patents
The air blowing of assisting slagging-off for molten iron gathers slag spray gun Download PDFInfo
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- CN204138696U CN204138696U CN201420657627.XU CN201420657627U CN204138696U CN 204138696 U CN204138696 U CN 204138696U CN 201420657627 U CN201420657627 U CN 201420657627U CN 204138696 U CN204138696 U CN 204138696U
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Abstract
The air blowing that the utility model discloses a kind of assisting slagging-off for molten iron gathers slag spray gun, comprise the linkage section connecting successively and communicate, body of a gun section, winding-up section, the metal closure plate for closing is provided with bottom described winding-up section air chamber, described winding-up section gas chamber outer wall is welded with winding-up section V-type anchoring piece, winding-up section refractory castable lining also built by described winding-up section air chamber, and winding-up section refractory castable lining lid winding-up section V-type anchoring piece, the sidewall of described winding-up section air chamber is provided with the diffuse type spout with its axes normal, the utility model is according to hydraulic model trial and result of industrial test, with straight tube single jet structure spray gun in prior art, in the utility model, circular spout angle а is the spray gun structure that 120 ~ 145 ° of regions are arranged, change blast pass direction, reduce air-flow to the wearing and tearing of tank skin, facilitating blows drives effect to tank skin region, iron ladle left and right molten iron slag to skimming gate, simplify the preparation technology of spray gun, improve blow poly-slag effect and efficiency of skimming, reach shortening slag-removing time, reduce the object of spray gun consuming cost.
Description
Technical field
The utility model relates to hot metal pretreatment field, is specifically related to poly-slag insert spray gun of blowing in a kind of molten iron pretreatment slag skimming process.
Background technology
Hot metal pretreatment and the technology of skimming are one of gordian techniquies of Clean Steel production platform, are also the indispensable operations in modern steel industrial process stream.At present, the removing of molten iron slag on molten iron level after domestic and international iron and steel enterprise generally adopts slag removal machine to carry out pre-treatment; Due to the restriction of iron ladle and slag removal device shape, slag removal device can not reach iron ladle rear wall, causes this region molten iron slag to be difficult to claw; Simultaneously, due to the dispersion of molten iron slag on molten iron level and floating, slag removal device single motion to take off the quantity of slag few, cause slag removal device action frequency many, slag-removing time is long, efficiency of skimming is low, iron loss of skimming is large, running cost is high, constrains the improvement of pretreatment process technico-economical comparison and the performance of productivity effect.For the problems referred to above, the iron and steel enterprise of some advanced technology countries, successively develop the eighties in last century and the nineties and push up rifle blowing slag-removing and gas permeable brick and breathe freely and catch up with the auxiliary slag skimming process of slag, by inserting the gas blow top lance in molten iron along iron ladle rear wall or being arranged on the Gas injection of iron ladle rear wall molten iron depths gas permeable brick, order about molten iron slag on liquid level to assemble to skimming gate direction, and make iron ladle rear wall region molten iron exposed, reach the object improving efficiency of skimming, related data reports top rifle or gas permeable brick is blown the practical application effect of skimming, indicate the deficiency that top rifle air blowing is serious to iron ladle rear wall refractory materials working lining erosive wear, but to pushing up the structural parameter of rifle or gas permeable brick, mounting arrangements mode, operating procedure process and processing parameter etc. all do not carry out systematic account.
For this reason, 2005, Baosteel takes the lead in having carried out top rifle air blowing and drives the research that slag assists slag skimming process technology, and based on concrete process layout and status of equipment, carry out a large amount of technical perfection work, and be applied on Mei Shan Steel stock Co., Ltd of Baoshan Iron and Steel Group molten iron spraying desulfurization spraying skims production line in 2010, achieve the excellent results improving efficiency of skimming; Shoudu Iron and Steel Co Jing Tang iron and steel Allied Corp. (US) Law Department P.O. Box 2245R. Morristown, NJ 07960-2245, U.S. to skim the process layout of production line and equipment actuality for prince wife Cao pasture molten iron KR stirring desulphurization, carry out rifle air blowing auxiliary slag skimming process technology and application research in top at the beginning of 2012, also achieve the excellent results improving efficiency of skimming; In addition, the iron and steel enterprise such as Wuhan Iron and Steel Plant, Anshan iron and steel plant also priority has carried out the auxiliary technical study of skimming of top rifle air blowing, and based on different equipment and technology features, defines the auxiliary poly-series of patents technology such as slag method and lance of top rifle air blowing of skimming of bright characteristic.
Wherein, in poly-slag method blown by top rifle, application number be 201010269403.9 Chinese invention patent disclose a kind of blowing slag-removing device with catch up with slag method, application number be 201010269403.8 Chinese invention patent disclose a kind of blowing slag-removing device and catch up with slag method, application number be 201210021342.2 Chinese invention patent disclose a kind of poly-slag equipment of blowing, take off slag system and method thereof, application number be 200910187790.8 Chinese invention patent disclose a kind of molten iron slagging-off method, these patents are respectively to gun insertion depth, angle of inclination, blowing gas pressure versus flow, spray gun air blowing startup opportunity etc. is illustrated, but spray gun blow opportunity delayed (bulk slag scratch clean after or thickness of slag layer be less than 50mm after start spray gun blow), gun insertion depth shallow (depth of penetration 300 ~ 400mm), winding-up flow too small (15 ~ 30Nm3/h or 0 ~ 800L/min), be unfavorable for that spray gun is blown and gather the guarantee of slag action time, blowing gas floating kinetic energy and the raising to liquid level molten iron slag driving force thereof, the guarantee etc. of poly-slag effect of blowing,
In the poly-slag spray gun of air blowing, domestic relevant iron and steel enterprise is for the purpose of increasing the service life, means are thickened by rifle lining, improve rifle lining slag-resistant to corrode and molten iron erosive wear, define multinomial patented technology, application number be 201020237906.2 Chinese utility model patent disclose a kind of air blow gun for blowing slag-removing, application number be 201020543058.8 Chinese utility model patent disclose a kind of air blow gun for molten iron blowing slag-removing, these patent spray gun structures are similar to the straight tube single hole top rifle of steel equipment Imported From German EMH Company in Taiwan, and be applied in actual production, there is the deficiency that molten iron tank skin refractory materials working lining erosive wear is serious equally, for this reason, application number be 201120059133.8 Chinese invention patent disclose a kind of air blow gun of assisting slagging-off for molten iron, this air blow gun is on the basis of above-mentioned patent spray gun structure, carry out the rifle header structure Curve guide impeller of Ramp jets, prevent blowing gas washing away tank skin refractory materials, but do not see the report of production application.
Application number be 201310076959.9 the Chinese invention patent air blowing that discloses a kind of assisting slagging-off for molten iron gather slag spray gun and using method thereof, the lance that its two spouts be arranged symmetrically with vertical gun barrel medullary ray are feature and using method thereof, reduce blast pass to the erosive wear of tank skin, what strengthen blast pass drives slag effect, pass through type approval test, find to there is rifle head and slag blanket impingement phenomenon in the lower rifle process of spray gun before action of skimming, have impact on the work-ing life of spray gun; For this reason, application number be 201320467961.4 Chinese utility model patent disclose a kind of hot metal pretreatment top and to blow auxiliary spray gun of skimming, it is made up of body of a gun section and winding-up section, by increasing winding-up section diameter, improve spray gun rifle head anti-slag layer jolt capacity, and in actual production, achieve the effect extending spray gun work-ing life, shorten slag-removing time, but iron loss aspect effect of skimming is not given prominence to.The finding of production application of skimming according to top rifle air blowing, the lance structure of production application is straight tube single hole spray gun, shorten the remarkably productive of slag-removing time, but the different firm-to-firm variation of the indexs such as the wearing and tearing of iron loss of skimming, tank skin, service life of lance is huge, iron loss of especially skimming and air blowing splash situation significant difference.Report according to related data, about lance structural parameter and operation controling parameters are studied less both at home and abroad on the impact of driving slag effect at present, the problems referred to above Producing reason can't be explained, far directly can not instruct the structure parameter optimizing of spray gun and the improvement of actual production operating procedure.Think, the difference of spray gun structure will directly have influence on distribution and the running orbit of gas injection flow field and iron underwater bubble, thus, first the Study on Structure Optimizing of spray gun must be carried out, organize and reasonably spray flow field, next is under the appointed condition determined, carry out operating procedure optimizing research further, stablize spray gun to blow poly-slag effect, finally reach that reducing blows and stir the slag iron that causes and mixedly mutually wear and tear with skim iron loss and tank skin, shorten slag-removing time, reduce to run and consume and maintenance cost, extend the integration objectives such as spray gun work-ing life.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, the air blowing providing a kind of assisting slagging-off for molten iron gathers slag spray gun, having blow that poly-slag spray gun structure is simple, long service life, air blowing drive the features such as slag operation is stable, molten iron slag aggregation extent is high, molten iron exposed surface is large, molten iron tank skin erosive wear is little, iron loss of skimming is low, slag-removing time is short.
For achieving the above object, a kind of air blowing of assisting slagging-off for molten iron designed by the utility model gathers slag spray gun, and comprise the linkage section, body of a gun section, the winding-up section that connect successively and communicate, described linkage section is by web member and pipe connecting; Described body of a gun section is served as a contrast by body of a gun section supervisor, body of a gun section V-type anchoring piece and body of a gun section refractory castable and forms; Described winding-up section comprises the winding-up section air chamber be responsible for body of a gun section and be communicated with, the metal closure plate for closing is provided with bottom described winding-up section air chamber, described winding-up section gas chamber outer wall is welded with winding-up section V-type anchoring piece, winding-up section refractory castable lining also built by described winding-up section air chamber, and winding-up section refractory castable lining lid winding-up section V-type anchoring piece, the sidewall of described winding-up section air chamber is provided with the circular spout with its axes normal, wherein, the quantity of described circular spout is 3 ~ 5, and the central axis angle α of outermost two circular spouts is 120 ~ 145 °.
Further, described circular nozzle pluggage is 2 ~ 10mm.Select diameter be the circular spout of 2 ~ 10mm can simplify significantly winding-up section manufacture craft, significantly reduce spray gun cost of manufacture.
Again further, described winding-up Duan Chengwei ellipse, circular cylinder or cone table structure, maximum diameter is body of a gun section diameter 1.1 ~ 2 times, is convenient to the layout of spout, improves winding-up section anti-slag layer and clashes into damaged ability.
Again further, described web member is ring flange or the fast fitting of metal.
Again further, described body of a gun section refractory castable lining and winding-up section refractory castable lining adopt Stainless-steel fibre corundum mullite rock mould material integrated poured shaping.
The utility model is by a large amount of hydraulic model trial, successively have studied the structure and technology parameters such as spray gun spout quantity, spray gun structure, insertion position, depth of penetration, winding-up flow and jetting pressure and poly-slag effect, molten iron exposed surface sizes and shape, blast pass are blown to the affecting laws of tank skin degradation degree etc. to spray gun, by the comprehensive analysis to hydraulic model trial result, obtain preliminary technology of the present invention.By the type approval test in actual production, further study spray gun structure parameter and processing parameter to the impact of effect of skimming.In conjunction with hydraulic model trial and result of industrial test, shortening slag-removing time, reduce skim iron loss and spray gun cost of manufacture, reduce molten iron tank skin and wear and tear, extend service life of lance etc. for target, carry out the optimization of spray gun structure and processing parameter, finally obtain technical solutions of the utility model.
The beneficial effects of the utility model:
According to hydraulic model trial and result of industrial test, with straight tube single jet structure spray gun in prior art, multi-port of the present utility model, spout axis and master metal pipe axes normal and angle а thereof are the spray gun structure that 120 ~ 145 ° of regions are arranged, change blast pass direction, reduce air-flow to the wearing and tearing of tank skin, facilitating blows drives effect to tank skin region, iron ladle left and right molten iron slag to skimming gate, improve blow poly-slag effect with skim efficiency, reach the object shortening slag-removing time;
In addition, under equal air blowing flow condition, multiply Gas injection mode reduces winding-up kinetic energy and the souring to wearing and tearing thereof, improve stability and the winding-up flow subject range of winding-up, contain that splash and the slag iron of air blowing process mix mutually, reached the object reducing the wearing and tearing of molten iron tank skin and iron loss of skimming; Meanwhile, also change air blowing reactive force direction, enhance the resistant to mechanical damage ability of rifle head in rifle process under spray gun, reduce the spray gun bob that causes in spray gun air blowing process and the mechanical wounding to spray gun and spray gun driving machine structure thereof.Have again, by the setting of the circular spout of suitable bore, spout metal tube directly can be welded with winding-up section air chamber and be communicated with, the disposable integral that realization winding-up section and body of a gun section refractory casting serve as a contrast is built shaping, thus make the utility model preparation technology identical with conventional straight tube single jet structure spray gun preparation technology, spray gun fabrication cycle and cost of manufacture are substantially identical, but spray gun is blown and driven slag performance and significantly improve, and improve top-submerged lance and to skim the object of effect.The utility model winding-up section refractory casting lining thickens the employing of structure and Stainless-steel fibre corundum mullite rock mould material; improve the performance such as thermal shock resistance, mechanical strength, resistance to mechanical impact capacity of spray gun refractory casting lining; delay the damaged process of refractory casting lining; enhance the defencive function of refractory casting lining to metal supervisor, metal spout, metal anchorage etc., reach the object extending spray gun work-ing life.
Accompanying drawing explanation
Fig. 1 is Fig. 1 is the utility model spray gun structure schematic diagram
Fig. 2 is the spray gun A-A sectional view that the utility model has 3 diffuse type spouts
Fig. 3 is the spray gun A-A sectional view that the utility model has 5 diffuse type spouts
In figure: linkage section 1 (wherein: ring flange 1.1, pipe connecting 1.2), body of a gun section 2 (wherein: body of a gun section supervisor 2.1, body of a gun section V-type anchoring piece 2.2, body of a gun section refractory castable lining 2.3), winding-up section 3 (wherein: winding-up section supervisor 3.1, winding-up section V-type anchoring piece 3.2, winding-up section refractory castable lining 3.3, diffuse type spout 3.4, metal closure plate 3.5).
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, so that those skilled in the art understand.
Embodiment 1
As shown in Fig. 1 ~ 2, a kind of air blowing of assisting slagging-off for molten iron gathers slag spray gun, comprise the linkage section 1, body of a gun section 2, the winding-up section 3 that connect successively and communicate, winding-up section 3 is in being body of a gun section 2 diameter 1.4 times for circular cylinder, its diameter, and linkage section 1 is by ring flange 1.1 and pipe connecting 1.2;
Body of a gun section 2 serves as a contrast 2.3 by body of a gun section supervisor 2.1, body of a gun section V-type anchoring piece 2.2 and body of a gun section refractory castable and forms, it is characterized in that: winding-up section 3 comprises is responsible for the 2.1 winding-up section air chambers 3.1 be communicated with body of a gun section, the metal closure plate 3.5 for closing is provided with bottom winding-up section air chamber 3.1, winding-up section air chamber 3.1 outer wall is welded with winding-up section V-type anchoring piece 3.2, winding-up section refractory castable lining 3.3 also built by winding-up section air chamber 3.1, and winding-up section refractory castable lining 3.3 covers winding-up section V-type anchoring piece 3.2, the sidewall of winding-up section air chamber 3.1 is provided with the circular spout 3.4 with its axes normal, wherein, the quantity of circular spout 3.4 is 3, the central axis angle α of outermost two diffuse type spouts 3.4 is 120 °.Circular spout 3.4 internal diameter is 2 ~ 10mm.
Body of a gun section refractory castable lining 2.3 and winding-up section refractory castable lining 3.3 adopt Stainless-steel fibre corundum mullite rock mould material integrated poured shaping.
Embodiment 2
As shown in figures 1 and 3: the present embodiment is substantially the same manner as Example 1, difference is:
The quantity of circular spout 3.4 is 5, and the central axis angle α of the circular spout 3.4 of outermost two is 145 °.
Other unspecified part is prior art.Although above-described embodiment has made detailed description to the utility model; but it is only the utility model part embodiment; instead of whole embodiment; people can also obtain other embodiments according to the present embodiment under without creative prerequisite, and these embodiments all belong to the utility model protection domain.
Claims (5)
1. the air blowing of an assisting slagging-off for molten iron gathers slag spray gun, comprise the linkage section (1), body of a gun section (2), the section of jetting (3) that connect successively and communicate, described linkage section (1) is by web member (1.1) and pipe connecting (1.2), described body of a gun section (2) is responsible for (2.1), body of a gun section V-type anchoring piece (2.2) and body of a gun section refractory castable lining (2.3) by body of a gun section and is formed, it is characterized in that: described winding-up section (3) comprises the winding-up section air chamber (3.1) be responsible for (2.1) with body of a gun section and be communicated with, described winding-up section air chamber (3.1) bottom is provided with the metal closure plate (3.5) for closing, described winding-up section air chamber (3.1) outer wall is welded with winding-up section V-type anchoring piece (3.2), described winding-up section air chamber (3.1) has also built winding-up section refractory castable lining (3.3), and winding-up section refractory castable lining (3.3) covers winding-up section V-type anchoring piece (3.2), the sidewall of described winding-up section air chamber (3.1) is provided with the circular spout (3.4) with its axes normal, wherein, the quantity of described circular spout (3.4) is 3 ~ 8, the central axis angle α of outermost two circular spouts (3.4) is 120 ~ 145 °.
2. the air blowing of assisting slagging-off for molten iron gathers slag spray gun according to claim 1, it is characterized in that: described circular spout (3.4) internal diameter is 2 ~ 10mm.
3. according to claim 1 or 2, the air blowing of assisting slagging-off for molten iron gathers slag spray gun, it is characterized in that: described winding-up section (3) is in being ellipse, circular cylinder or cone table structure, and its maximum diameter is body of a gun section (2) diameter 1.1 ~ 2 times.
4. according to claim 1 or 2, the air blowing of assisting slagging-off for molten iron gathers slag spray gun, it is characterized in that: described web member (1.1) is ring flange or the fast fitting of metal.
5. according to claim 1 or 2, the air blowing of assisting slagging-off for molten iron gathers slag spray gun, it is characterized in that: described body of a gun section refractory castable lining (2.3) and winding-up section refractory castable lining (3.3) adopt Stainless-steel fibre corundum mullite rock mould material integrated poured shaping.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420657627.XU CN204138696U (en) | 2014-11-05 | 2014-11-05 | The air blowing of assisting slagging-off for molten iron gathers slag spray gun |
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| CN201420657627.XU CN204138696U (en) | 2014-11-05 | 2014-11-05 | The air blowing of assisting slagging-off for molten iron gathers slag spray gun |
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| CN204138696U true CN204138696U (en) | 2015-02-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106319151A (en) * | 2016-09-09 | 2017-01-11 | 武汉钢铁股份有限公司 | Molten iron desulphurization system and molten iron and iron slag separation device and method thereof |
| CN110453043A (en) * | 2019-09-12 | 2019-11-15 | 马鞍山钢铁股份有限公司 | A kind of top argon-blowing gun |
-
2014
- 2014-11-05 CN CN201420657627.XU patent/CN204138696U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106319151A (en) * | 2016-09-09 | 2017-01-11 | 武汉钢铁股份有限公司 | Molten iron desulphurization system and molten iron and iron slag separation device and method thereof |
| CN110453043A (en) * | 2019-09-12 | 2019-11-15 | 马鞍山钢铁股份有限公司 | A kind of top argon-blowing gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170726 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 Wuhan, Hubei, Wuchang Friendship Avenue, No. 999, block A, layer 15, layer Patentee before: Wuhan Iron & Steel (Group) Corp. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20191105 |
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| CF01 | Termination of patent right due to non-payment of annual fee |