CN104164535B - Ventilative poly-slag top plug-in type spray gun and preparation method thereof - Google Patents
Ventilative poly-slag top plug-in type spray gun and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of ventilative poly-slag top plug-in type spray gun and preparation method thereof, this spray gun includes being sequentially connected with linkage section, the body of a gun section communicated, section of jetting, winding-up section air chamber, winding-up section V-type anchoring piece and winding-up section castable refractory lining that described winding-up section is closed by termination form, the sidewall of described winding-up section air chamber is provided with the diffusion-type spout vertical with its axis, wherein, the central axis angle of two diffusion-type spouts of outermost is less than 150 °.The method is first according to the structural parameters preparing above-mentioned spray gun, and each metal parts of processing and fabricating spray gun also eliminates rust；Then prepare winding-up section, body of a gun section supervisor is welded connection with winding-up section air chamber, select Stainless-steel fibre corundum mullite rock castable to carry out moulding by casting；Namely spray gun is obtained.Spray gun manufacture method provided by the invention, it is ensured that what spray gun made be smoothed out, the unimpeded and metal structure air-tightness of spray gun structure dimensional accuracy, gas injection passage, improves inherent quality and the serviceability of spray gun.
Description
Technical field
The invention belongs to molten iron preprocessing technical field, the present invention relates to one assisting slagging-off for molten iron poly-slag ventilation part and preparation method thereof, be specifically related in a kind of molten iron pretreatment slag skimming process and breathe freely gather slag top plug-in type spray gun and preparation method thereof.
Background technology
Molten iron pretreatment and the technology of skimming are one of key technologies of clean steel production platform, are also the indispensable operations in modern steel industrial process stream.At present, the commonly used Cinder Machine of domestic and international iron and steel enterprise carry out pretreatment after the removing of molten iron slag on molten iron level；Due to the restriction of hot-metal bottle Yu slag removal device shape, slag removal device can not reach hot-metal bottle rear wall, causes that this region molten iron slag is difficult to claw；Simultaneously, due on molten iron level the dispersion of molten iron slag with floating, slag removal device single motion to take off the quantity of slag few, cause that slag removal device action frequency is many, slag-removing time length, efficiency of skimming is low, iron loss of skimming is big, operating cost is high, constrains the improvement of pretreatment process technical-economic index and the performance of productivity effect.
For the problems referred to above, the iron and steel enterprise of some advanced technology countries, successively develop top gun blowing slag-removing the eighties in last century and the nineties to breathe freely with air brick and catch up with the auxiliary slag skimming process of slag, by inserting the gas blow top lance in molten iron along hot-metal bottle rear wall or being arranged on the Gas injection of hot-metal bottle rear wall molten iron depths air brick, order about molten iron slag on liquid level to assemble to skimming gate direction, and make hot-metal bottle rear wall region molten iron exposed, reach to improve the purpose of efficiency of skimming, related data reports top gun or air brick and blows the practical application effect skimmed, indicate the deficiency that top gun air blowing is serious to hot-metal bottle rear wall refractory material working lining erosive wear, but the structural parameters to top gun or air brick, mounting arrangements mode, operating procedure process does not all carry out systematic account with technological parameter etc..
After entering 21 century, first some iron and steel enterprises of China have carried out the research of hot-metal bottle air brick auxiliary slag skimming process technology, and be applied in numerous iron and steel enterprises, but owing to air brick gas attended operation is loaded down with trivial details, air brick blocking is dangerous with air brick region leakage iron winds, often the personal safety of operator and the safe operation of hot-metal bottle and normal turnover are threatened, for the technology pattern of " tank is on earth ", potential safety hazard is bigger, and blowing rate of air brick will be lower.For this, 2005, Baosteel takes the lead in having carried out top gun air blowing and drives the research of slag auxiliary slag skimming process technology, and based on concrete process layout and status of equipment, carry out the work of substantial amounts of technical perfection, 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. skims for prince wife Cao pasture molten iron KR stirring desulphurization the process layout of production line and equipment actuality, has carried out top gun and has blown auxiliary slag skimming process technology and applied research, also achieve the excellent results improving efficiency of skimming at the beginning of 2012；Blow the technical research that auxiliary skims additionally, the iron and steel enterprise such as Wuhan Iron and Steel Plant, Anshan iron and steel plant has also successively carried out top gun, and based on different equipment and technology features, define the auxiliary of bright characteristic top gun of skimming and blow the series of patents technology such as poly-slag method and lance.
Wherein, in top gun blows poly-slag method, application number be 201010269403.9 Chinese invention patent disclose a kind of blowing slag-removing device and 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 and flow, spray gun air blowing startup opportunity etc. is illustrated, but spray gun is blown delayed (bulk slag scratches clean afterwards or thickness of slag layer is less than starting spray gun air blowing after 50mm) on opportunity, gun insertion depth shallow (insertion depth 300～400mm), winding-up flow too small (15～30Nm3/h or 0～800L/min), it is unfavorable for that spray gun is blown and gathers 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 poly-slag spray gun of blowing, domestic relevant iron and steel enterprise is for the purpose of increasing the service life, hands section is 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 gun of steel equipment Imported From German EMH Company in Taiwan, and be applied in actual production, equally exist the deficiency that molten iron tank skin refractory material working lining erosive wear is serious；For this, application number be 201120059133.8 Chinese invention patent disclose the air blow gun of a kind 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 material, but do not see the report of production application.
Application number be 201310076959.9 Chinese invention patent disclose the poly-slag spray gun of air blowing and the using method thereof of a kind of assisting slagging-off for molten iron, lance that its two spouts being arranged symmetrically with vertical gun barrel centrage are feature and using method thereof, reduce the blast pass erosive wear to tank skin, what strengthen blast pass drives slag effect, pass through type approval test, find the spray gun lower rifle process before action of skimming exists rifle head and slag blanket impingement phenomenon, have impact on the service life of spray gun；For this, application number be 201320467961.4 Chinese utility model patent disclose a kind of molten iron pretreatment top air blowing auxiliary and skim spray gun, 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 achieve in actual production and to extend spray gun service life, shorten the application effect of slag-removing time, but iron loss aspect effect of skimming is not highlighted.The finding of production application of skimming according to top gun 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 index difference firm-to-firm variations such as the abrasion of iron loss of skimming, tank skin, service life of lance are huge, iron loss of especially skimming and air blowing splash situation significant difference.Report according to related data, control the parameter impact on driving slag effect about lance structural parameters and operation and study less at present both at home and abroad, the problems referred to above Producing reason can't be explained, far from the improvement of the structure parameter optimizing Yu actual production operating procedure that directly instruct spray gun.Think, the difference of spray gun structure will directly influence distribution and the running orbit of jet stream of gas field and ferrum underwater bubble, thus, it is first necessary to carry out the Study on Structure Optimizing of spray gun, tissue reasonably sprays flow field, next to that under the appointed condition determined, carry out operating procedure optimizing research further, stablize spray gun to blow poly-slag effect, be finally reached reduce slag ferrum that stirring of blowing causes mutually mixed with skim iron loss and tank skin abrasion, shorten slag-removing time, reduce run consume with maintenance cost, extend the integration objectives such as spray gun service life.
Summary of the invention
The technical problem to be solved is just to provide in a kind of molten iron pretreatment slag skimming process and breathes freely gathers slag top plug-in type spray gun and preparation method thereof.The features such as spray gun has simple in construction, preparation is easy, it is unobstructed to breathe freely, long service life, stable operation, molten iron slag aggregation extent high, molten iron exposed surface big, molten iron tank skin erosive wear is little, iron loss of skimming is low, slag-removing time is short.
For solving above-mentioned technical problem, one provided by the invention ventilative poly-slag top plug-in type spray gun, including being sequentially connected with linkage section, the body of a gun section communicated, section of jetting, described linkage section is by connector and connecting tube；Described body of a gun section is made up of body of a gun section supervisor, body of a gun section V-type anchoring piece and body of a gun section castable refractory lining；Winding-up section air chamber, winding-up section V-type anchoring piece and winding-up section castable refractory lining that described winding-up section is closed by termination form, the sidewall of described winding-up section air chamber is provided with the diffusion-type spout vertical with its axis, wherein, the quantity of described diffusion-type spout is multiple, central axis angle а≤150 ° of two diffusion-type spouts of outermost.Described winding-up section is ovallized column, cylinder, drum-shaped, cube, truncated cone or arris is the column of arc-shaped transitional surface.
In some embodiments, described diffusion-type spout is slit or capillary cellular type structure, and diffusion-type spout is arranged along winding-up section air chamber circumferencial direction level or updip β, and wherein, β is 10～30 °.
In other embodiments, described connector is ring flange or the fast fitting of metal.
The preparation method that present invention also offers a kind of ventilative poly-slag top plug-in type spray gun, comprises the following steps:
1) according to the structural parameters preparing above-mentioned spray gun, each metal parts of processing and fabricating spray gun also eliminates rust, standby；
2) choosing winding-up section air chamber, the sidewall at winding-up section air chamber offers the slit vertical with its axis or capillary cellular type diffusion-type spout, and welds winding-up section V-type anchoring piece on winding-up section gas chamber outer wall；
3) by step 2) winding-up section air chamber be installed on winding-up section casting mold in, adopt PVC plastic thin slice or thin rod line as ablator, running through winding-up section air chamber and the slit on outer mold wall or capillary cellular type diffusion-type spout, blend compounds band and fixture are fixed on winding-up section air chamber inwall and outer mold wall；
4) Stainless-steel fibre corundum mullite rock castable is selected to carry out moulding by casting, prepare the winding-up section of spray gun, castable upper surface and the minimum perpendicular distance requirement >=50mm of slit or capillary cellular type diffusion-type spout, jet section gas chamber sidewall higher than pouring into a mould charge level height >=10mm；
5) after the cast of winding-up section after natural curing 1～3 day, body of a gun section supervisor is welded connection with winding-up section air chamber, it is responsible for surface in body of a gun section and welds body of a gun section V-type anchoring piece on request, and with steel brush bristle jet section refractory material composition surface, adopt this composition surface of organo-silicon coupling agent brushing, body of a gun section integral installation is fixed in body of a gun section casting mold；
6) select Stainless-steel fibre corundum mullite rock castable to carry out moulding by casting, prepare the body of a gun section of spray gun, the length of body of a gun section supervisor's castable revealed section length >=linkage section；
7) natural curing 1～3 day after the cast of body of a gun section, is responsible for revealed section cutting processing according to the length requirement of linkage section to body of a gun section, welds or threaded installation connecting element；
8) residue of body of a gun section supervisor and winding-up section plenum interior is removed, natural curing 3～6 days, it is placed in oven, toast 2～4 days when temperature is 350～450 DEG C, be cooled in stove≤50 DEG C come out of the stove, and again remove body of a gun section supervisor and winding-up section plenum interior residue, packaging warehouse-in, namely obtain ventilative poly-slag top plug-in type spray gun.
The present invention passes through substantial amounts of hydraulic model trial, successively have studied the technological parameter such as diffusion-type spout structure shape, slit or the structural parameters such as pore quantity, jet segment structure and spray gun insertion site, insertion depth, winding-up flow, jetting pressure spray gun to be breathed freely poly-slag effect, molten iron exposed surface size and shape, the ventilative affecting laws to tank skin degradation degree etc., by the comprehensive analysis to hydraulic model trial result, obtain the preliminary technology of the present invention.By the type approval test in actual production, further study spray gun structure parameter and the Operating parameters impact on effect of skimming.In conjunction with hydraulic model trial and result of industrial test, to shorten slag-removing time, to reduce iron loss of skimming with spray gun cost of manufacture, reduction molten iron tank skin abrasion, prolongation service life of lance etc. for target, carry out the optimization of spray gun structure and technological parameter.
The beneficial effects of the present invention is:
According to hydraulic model trial and result of industrial test, with straight tube single jet structure spray gun in prior art, the slit of the present invention or pore diffusion-type spout structure, along winding-up section air chamber circumferencial direction level or updip arrangement, and communicate and the distribution pattern of а≤150 °, two spout central wire clamp angles of outermost with winding-up section air chamber, change jet-stream wind direction and jeting area, reduce the air-flow abrasion to tank skin, promote that jet-stream wind is left to hot-metal bottle, right, rear tank skin region molten iron slag drives effect to skimming gate, improve the poly-slag effect of air blowing and efficiency of skimming, reach to shorten the purpose of slag-removing time；In addition, when equal injection gas flow, the bubble of diffusion-type spout is tiny, stream stock is numerous, contain the gathering in gas streams rising expansion process, reduce liquid level gas and discharge intensity and the liquid level big ups and downs caused thereof, improve the stability of ventilative poly-slag, expand the subject range of the ventilative flow of spray gun, contain that the slag ferrum that liquid level big ups and downs cause mixes and iron-holder in bundle mutually, reduced the purpose of iron loss of skimming；Meanwhile, reduce counteracting force and the air-flow erosive wear to spray gun of gas injection, improve comprehensive globality and the resistant to mechanical damage ability of winding-up section, reach the purpose extending spray gun service life.The structural design of the column that ovallized column, cylinder, drum-shaped, cube, truncated cone or arris are arc-shaped transitional surface is become by jet section air chamber and jet segment form construction design, facilitate the layout of diffusion-type spout diffusion-type spout, reduce spray gun manufacture difficulty, and expand diffusion-type spout spacing, reduce the buoyancy lift aggregation to jet-stream wind further, improve the stability of ventilative poly-slag.The present invention adopts Stainless-steel fibre corundum mullite rock castable to prepare castable refractory lining; by performances such as the excellent thermal shock resistance of castable, mechanical strength, resistance to mechanical impact capacities; delay the damaged process that refractory casting serves as a contrast; enhance castable refractory lining body of a gun section is responsible for, the defencive function of winding-up section air chamber, metal anchorage etc., extend spray gun service life further.Spray gun manufacture method provided by the invention, it is ensured that what spray gun made be smoothed out, the unimpeded and metal structure air-tightness of spray gun structure dimensional accuracy, gas injection passage, improves inherent quality and the serviceability of spray gun.
Accompanying drawing explanation
Fig. 1 is a kind of arris of the present invention is the cylinder winding-up ventilative poly-slag spray gun structure schematic diagram of section of arc-shaped transitional surface；
Fig. 2 is the A-A profile of Fig. 1；
Fig. 3 is a kind of upper and lower arris of the present invention is the Elliptic Cylinder winding-up ventilative poly-slag spray gun structure schematic diagram of section of arc-shaped transitional surface；
Fig. 4 is the A-A profile of Fig. 3；
Fig. 5 is a kind of arris of the present invention is the round platform winding-up ventilative poly-slag structural representation of section of arc-shaped transitional surface；
Fig. 6 is the ventilative poly-slag structural representation of cylinder winding-up section of a kind of arc-shaped transitional surface of the present invention；
In figure: linkage section 1 is (wherein: ring flange 1.1, connecting tube 1.2), body of a gun section 2 is (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 castable refractory lining 2.3 composition), winding-up section 3 (wherein: winding-up section air chamber 3.1, section V-type anchoring piece 3.2 of jetting, winding-up section castable refractory lining 3.3, spout 3.4).
Detailed description of the invention
In order to explain the present invention better, it is further elucidated with the main contents of the present invention below in conjunction with specific embodiment, but present disclosure is not limited solely to following example.
Embodiment 1
As shown in Fig. 1～2, a kind of ventilative poly-slag top plug-in type spray gun, including being sequentially connected with linkage section 1, the body of a gun section 2 communicated, section 3 of jetting, winding-up section 3 axial cross section is sized larger than body of a gun section 2, and described linkage section 1 is by ring flange 1.1 and connecting tube 1.2；Described body of a gun section 2 is made up of 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 castable refractory lining 2.3；Winding-up section air chamber 3.1, winding-up section V-type anchoring piece 3.2 and winding-up section castable refractory lining 3.3 that described winding-up section 3 is closed by termination form,
Body of a gun section supervisor 2.1 is ordinary carbon steel seamless pipe, and wherein, one end communicates with ring flange 1.1 welding, and the other end communicates with winding-up section air chamber 3.1 welding.Winding-up section air chamber 3.13 is ordinary carbon steel pipe and common carbon steel plate weldment, the other end is common carbon steel plate welding closure, the sidewall of described winding-up section air chamber 3.1 is provided with the diffusion-type spout 3.4 vertical with its axis, wherein, the quantity of described diffusion-type spout 3.4 is 9, and the central axis angle of two diffusion-type spouts 3.4 of outermost is less than 120 °.Described winding-up section 3 is the cylinder of arc-shaped transitional surface for arris.
Diffusion-type spout 3.4 is capillary cellular type structure, diffusion-type spout 3.4 along winding-up section air chamber 3.1 circumferencial direction level.
The preparation method of a kind of ventilative poly-slag top plug-in type spray gun, comprises the following steps:
1) according to the structural parameters preparing above-mentioned spray gun, each metal parts of processing and fabricating spray gun also eliminates rust, standby；
2) choosing winding-up section air chamber 3.1, the sidewall at winding-up section air chamber 3.1 offers the capillary cellular type diffusion-type spout 3.4 vertical with its axis, and welds winding-up section V-type anchoring piece 3.2 on winding-up section air chamber 3.1 outer wall；
3) the winding-up section air chamber 3.1 of step 2 is installed in winding-up section 3 casting mold, adopt PVC plastic thin slice or thin rod line as ablator, running through winding-up section air chamber 3.1 and the slit on outer mold wall or capillary cellular type diffusion-type spout 3.4, blend compounds band and fixture are fixed on to be fixed winding-up section air chamber 3.1 inwall and outer mold wall；
4) select Stainless-steel fibre corundum mullite rock castable to carry out moulding by casting, prepare the minimum perpendicular distance requirement >=50mm of the winding-up section 3 of spray gun, castable upper surface and slit or capillary cellular type diffusion-type spout 3.4；Winding-up section gas chamber sidewall is higher than cast charge level height >=10mm；
5) after the cast of winding-up section 3 after natural curing 1～3 day, body of a gun section is responsible for 2.1 and welds connection with winding-up section air chamber 3.1, it is responsible for 2.1 surfaces in body of a gun section and welds body of a gun section V-type anchoring piece 2.2 on request, and with steel brush bristle jet section 3 refractory material composition surface, adopt this composition surface of organo-silicon coupling agent brushing, body of a gun section 2 integral installation is fixed in body of a gun section 2 casting mold；
6) selecting Stainless-steel fibre corundum mullite rock castable to carry out moulding by casting, prepare the body of a gun section 2 of spray gun, body of a gun section is responsible for the length of 2.1 castable revealed section length >=linkage section 1；
7) natural curing 1～3 day after body of a gun section 2 cast, is responsible for 2.1 revealed section cutting processing according to the length requirement of linkage section 1 to body of a gun section, welds or threaded installation connecting element 1.1；
8) body of a gun section supervisor 2.1 and the residue jetted within section air chamber 3.1 are removed, natural curing 3～6 days, it is placed in oven, toast 2～4 days when temperature is 350～450 DEG C, be cooled in stove≤50 DEG C come out of the stove, and again remove body of a gun section supervisor 2.1 residue internal with winding-up section air chamber 3.1, packaging warehouse-in, namely obtain ventilative poly-slag top plug-in type spray gun.
Embodiment 2
As shown in figs. 34, a kind of ventilative poly-slag top plug-in type spray gun, the present embodiment is substantially the same manner as Example 1, is different in that:
Diffusion-type spout 3.4 is slit structure, and winding-up section 3 is upper and lower arris is the elliptic cylindrical of arc-shaped transitional surface.
Embodiment 3
As it is shown in figure 5, a kind of ventilative poly-slag top plug-in type spray gun, the present embodiment is substantially the same manner as Example 1, is different in that:
Diffusion-type spout 3.4 is capillary cellular type structure, and along metal air chamber 3 circumferencial direction updip 10 ° layout, winding-up section 3 is the round platform of arc-shaped transitional surface for arris.
Embodiment 4
As shown in Figure 6, a kind of ventilative poly-slag top plug-in type spray gun, the present embodiment is substantially the same manner as Example 1, is different in that:
Diffusion-type spout 3.4 is slit structure, arranges that winding-up section 3 is the cylinder of arc-shaped transitional surface for arris along metal air chamber 3 circumferencial direction updip β.
Other unspecified part is prior art.Although the present invention is made that detailed description by above-described embodiment; but its a part of embodiment that is only the present invention; rather than whole embodiments, people can also obtain other embodiments according to the present embodiment under without creative premise, and these embodiments broadly fall into scope.
Claims (4)
1. a ventilative poly-slag top plug-in type spray gun, including be sequentially connected with communicate linkage section (1), body of a gun section (2), winding-up section (3), described linkage section (1) is made up of connector (1.1) and connecting tube (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 castable refractory lining (2.3) by body of a gun section and is formed；Winding-up section air chamber (3.1), winding-up section V-type anchoring piece (3.2) and winding-up section castable refractory lining (3.3) that described winding-up section (3) is closed by termination form, the sidewall of described winding-up section air chamber (3.1) is provided with the diffusion-type spout (3.4) vertical with its axis, wherein, the quantity of described diffusion-type spout (3.4) is multiple, and the central axis angle of two diffusion-type spouts (3.4) of outermost is less than 150 °；Described diffusion-type spout (3.4) is slit or capillary cellular type structure, and diffusion-type spout (3.4) is arranged along winding-up section air chamber (3.1) circumferencial direction level or updip β, and wherein, β is 10～30 °；It is characterized in that: the preparation method of described ventilative poly-slag top plug-in type spray gun comprises the following steps:
1) according to the structural parameters preparing spray gun, each metal parts of processing and fabricating spray gun also eliminates rust, standby；
2) winding-up section air chamber (3.1) is chosen, sidewall in winding-up section air chamber (3.1) offers the slit vertical with its axis or capillary cellular type diffusion-type spout (3.4) welding winding-up section V-type anchoring piece (3.2) on winding-up section air chamber (3.1) outer wall；
3) by step 2) winding-up section air chamber (3.1) be installed on winding-up section (3) casting mold in, adopt PVC plastic thin slice or thin rod line as ablator, running through winding-up section air chamber (3.1) and the slit on outer mold wall or capillary cellular type diffusion-type spout (3.4), blend compounds band and fixture are fixed on winding-up section air chamber (3.1) inwall and outer mold wall；
4) Stainless-steel fibre corundum mullite rock castable is selected to carry out moulding by casting, prepare the minimum perpendicular distance requirement >=50mm of the winding-up section (3) of spray gun, castable upper surface and slit or capillary cellular type diffusion-type spout (3.4)；Winding-up section gas chamber sidewall is higher than cast charge level height >=10mm；
5) after winding-up section (3) cast after natural curing 1～3 day, body of a gun section is responsible for (2.1) and welds connection with winding-up section air chamber (3.1), it is responsible for (2.1) surface in body of a gun section and welds body of a gun section V-type anchoring piece (2.2) on request, and with steel brush bristle jet section (3) refractory material composition surface, adopt this composition surface of organo-silicon coupling agent brushing, body of a gun section (2) integral installation is fixed in body of a gun section (2) casting mold；
6) select Stainless-steel fibre corundum mullite rock castable to carry out moulding by casting, prepare the body of a gun section (2) of spray gun, the length of body of a gun section supervisor's (2.1) castable revealed section length >=linkage section (1)；
7) natural curing 1～3 day after body of a gun section (2) cast, is responsible for (2.1) revealed section cutting processing according to the length requirement of linkage section (1) to body of a gun section, welds or threaded installation connecting element (1.1)；
8) residue that body of a gun section supervisor (2.1) is internal with winding-up section air chamber (3.1) is removed, natural curing 3～6 days, it is placed in oven, toast 2～4 days when temperature is 350～450 DEG C, be cooled in stove≤50 DEG C come out of the stove, and again remove body of a gun section supervisor (2.1) residue internal with winding-up section air chamber (3.1), packaging warehouse-in, namely obtain ventilative poly-slag top plug-in type spray gun.
2. ventilative poly-slag top according to claim 1 plug-in type spray gun, it is characterised in that: described connector (1.1) is the fast fitting of ring flange or metal.
3. ventilative poly-slag top according to claim 1 and 2 plug-in type spray gun, it is characterised in that: described winding-up section (3) is ovallized column, cylinder, drum-shaped, cube, truncated cone or arris are the column of arc-shaped transitional surface.
4. the ventilative poly-slag preparation method of top plug-in type spray gun, it is characterised in that: comprise the following steps:
1) according to the structural parameters preparing spray gun, each metal parts of processing and fabricating spray gun also eliminates rust, standby；
2) winding-up section air chamber (3.1) is chosen, sidewall in winding-up section air chamber (3.1) offers the slit vertical with its axis or capillary cellular type diffusion-type spout (3.4) welding winding-up section V-type anchoring piece (3.2) on winding-up section air chamber (3.1) outer wall；
3) by step 2) winding-up section air chamber (3.1) be installed on winding-up section (3) casting mold in, adopt PVC plastic thin slice or thin rod line as ablator, running through winding-up section air chamber (3.1) and the slit on outer mold wall or capillary cellular type diffusion-type spout (3.4), blend compounds band and fixture are fixed on winding-up section air chamber (3.1) inwall and outer mold wall；
4) Stainless-steel fibre corundum mullite rock castable is selected to carry out moulding by casting, prepare the minimum perpendicular distance requirement >=50mm of the winding-up section (3) of spray gun, castable upper surface and slit or capillary cellular type diffusion-type spout (3.4)；Winding-up section gas chamber sidewall is higher than cast charge level height >=10mm；
5) after winding-up section (3) cast after natural curing 1～3 day, body of a gun section is responsible for (2.1) and welds connection with winding-up section air chamber (3.1), it is responsible for (2.1) surface in body of a gun section and welds body of a gun section V-type anchoring piece (2.2) on request, and with steel brush bristle jet section (3) refractory material composition surface, adopt this composition surface of organo-silicon coupling agent brushing, body of a gun section (2) integral installation is fixed in body of a gun section (2) casting mold；
6) select Stainless-steel fibre corundum mullite rock castable to carry out moulding by casting, prepare the body of a gun section (2) of spray gun, the length of body of a gun section supervisor's (2.1) castable revealed section length >=linkage section (1)；
7) natural curing 1～3 day after body of a gun section (2) cast, is responsible for (2.1) revealed section cutting processing according to the length requirement of linkage section (1) to body of a gun section, welds or threaded installation connecting element (1.1)；
8) residue that body of a gun section supervisor (2.1) is internal with winding-up section air chamber (3.1) is removed, natural curing 3～6 days, it is placed in oven, toast 2～4 days when temperature is 350～450 DEG C, be cooled in stove≤50 DEG C come out of the stove, and again remove body of a gun section supervisor (2.1) residue internal with winding-up section air chamber (3.1), packaging warehouse-in, namely obtain ventilative poly-slag top plug-in type spray gun.
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| CN201410369325.7A CN104164535B (en) | 2014-07-30 | 2014-07-30 | Ventilative poly-slag top plug-in type spray gun and preparation method thereof |
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| CN201410369325.7A CN104164535B (en) | 2014-07-30 | 2014-07-30 | Ventilative poly-slag top plug-in type spray gun and preparation method thereof |
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| CN104164535A CN104164535A (en) | 2014-11-26 |
| CN104164535B true CN104164535B (en) | 2016-06-29 |
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| CN107142357A (en) * | 2017-05-25 | 2017-09-08 | 武汉钢铁有限公司 | Blow poly- slag top angle-inserting type spray gun, preparation method and application method |
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| JPH10281656A (en) * | 1997-04-04 | 1998-10-23 | Nippon Steel Corp | Monolithic refractory-spraying apparatus |
| CN101338355A (en) * | 2008-07-28 | 2009-01-07 | 武汉钢铁(集团)公司 | Argon-blowing spray gun for refining ladle and making method thereof |
| CN101386901A (en) * | 2008-08-26 | 2009-03-18 | 武汉钢铁(集团)公司 | Gasifying chamber spray gun for granular magnesium desulfurization |
| CN103114177A (en) * | 2013-03-12 | 2013-05-22 | 武汉钢铁(集团)公司 | Gas-blowing and slag-gathering spray gun for assisting slag-off of molten iron and using method of spray gun |
| CN203360480U (en) * | 2013-07-26 | 2013-12-25 | 武汉钢铁(集团)公司 | Spray gun used for assisting slagging-off by blowing air at top during molten iron pretreatment |
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2014
- 2014-07-30 CN CN201410369325.7A patent/CN104164535B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10281656A (en) * | 1997-04-04 | 1998-10-23 | Nippon Steel Corp | Monolithic refractory-spraying apparatus |
| CN101338355A (en) * | 2008-07-28 | 2009-01-07 | 武汉钢铁(集团)公司 | Argon-blowing spray gun for refining ladle and making method thereof |
| CN101386901A (en) * | 2008-08-26 | 2009-03-18 | 武汉钢铁(集团)公司 | Gasifying chamber spray gun for granular magnesium desulfurization |
| CN103114177A (en) * | 2013-03-12 | 2013-05-22 | 武汉钢铁(集团)公司 | Gas-blowing and slag-gathering spray gun for assisting slag-off of molten iron and using method of spray gun |
| CN203360480U (en) * | 2013-07-26 | 2013-12-25 | 武汉钢铁(集团)公司 | Spray gun used for assisting slagging-off by blowing air at top during molten iron pretreatment |
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Effective date of registration: 20170724 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. |