CN204752786U - Optimize inner nozzle brick - Google Patents
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- CN204752786U CN204752786U CN201520385396.6U CN201520385396U CN204752786U CN 204752786 U CN204752786 U CN 204752786U CN 201520385396 U CN201520385396 U CN 201520385396U CN 204752786 U CN204752786 U CN 204752786U
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- nozzle brick
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Abstract
The utility model relates to an optimize inner nozzle brick installs inside fixed frame, and a terminal surface is connected with tapping muzzle brick, and a terminal surface is connected with the top slide brick, and the external side of inner nozzle brick is equipped with 3 -8mm's steel band, and the internal portion of brick is equipped with a class steel hole, and the upper portion of flowing the steel hole is the horn mouth, and high 12 -13 is assembled for the inner nozzle brick to the height of horn mouth, and the inclination of horn mouth is 10 -30. The utility model discloses the stream steel hole of inner nozzle brick is the loudspeaker degree of lip -rounding by traditional straight through -hole optimization of going up under straightening, can effectively reduce and water steel in -process eddy generation, slow down to the abnormal erosion of inner nozzle, improve the inner nozzle and synthesize hole enlargement speed, also play the guard action to the reaming with the top slide contact position, finally the comprehensive hole enlargement to lower slide, the outer mouth of a river reduces to play useful influence, increases the steel band at the inner nozzle outside the body simultaneously, improves the thermal shock stability and the anti aggressivity of inner nozzle. Be favorable to the whole life's of nai material of converter tapping pushing off the slag the improvement and the further promotion of security.
Description
Technical field
The utility model relates to refractory brick, particularly one fire-resistant industry converter slag-resisting inner nozzle brick.
Background technology
In converter steelmaking is produced, when smelting in stove, produce the slag of a large amount of molten state.These slags can flow in ladle along with the tapping of converter, and then affect the life-span of ladle lining; Cause molten steel to return sulphur, rephosphorization, affect steel quality; After increase stove, the consumption of iron alloy, increases the consumption of subsequent handling synthetic slag, extends the refining procedure treatment time.Therefore, when converter tapping, slag-stopping tapping technology should be adopted strictly to control the lower quantity of slag of converter.
Since nippon in 1970 has invented slag-blocking ball, in order to improve the pushing off the slag effect of converter tapping process, reduce the lower quantity of slag, domestic and international Related Work person has carried out a large amount of explorations at pushing off the slag technical elements, tens kinds of slag stopping methods such as pushing off the slag ball, floating plug method, pushing off the slag material method, slide plate method, pneumatic dreg blocking method, tap hole air blowing interference eddy-current method are in succession invented, and constantly improved in conjunction with STEELMAKING PRODUCTION practical situation, pushing off the slag effect is optimized gradually.Facts have proved, converter tap hole slide gate pushing off the slag technology is opened with machinery or hydraulic way or is closed tap hole, to reach pushing off the slag object, effectively can control early stage and later stage slag, pushing off the slag success ratio can reach 100%, relatively other pushing off the slag technology, pushing off the slag successful is optimized, pushing off the slag rate significantly improves, and steel mill's site operative simplifies feasible more, and safety and reliability significantly improves.Therefore with the efficiency directly affecting the pushing off the slag of converter work-ing life at converter tap hole slide gate pushing off the slag technology and the tapping hole brick of converter that matches with it, inner nozzle brick, upper lower skateboard, the lower mouth of a river; Consider the special smelting environment of converter, converter taphole inner nozzle material is not mainly to burn magnesium carbonaceous in the market, its composition is similar to tapping hole brick of converter substantially, its work-ing life is at 30 stove ~ 50 stoves, and the work-ing life of tap hole is between 120 stove ~ 150 stoves, be 4-5 times of inner nozzle brick; Due to inner nozzle brick use in by molten steel wash away affect with thermal shock fairly obvious, inner nozzle brick is again the important channel connecting tapping muzzle brick (major part brick) and converter furnace sliding plate simultaneously, improve the design of inner nozzle brick, raising work-ing life and the service efficiency of safety in utilization to the resistance to material of overall converter slag-resisting series improve very outstanding significance.
According to the actual service condition of steel mill, namely the reaming situation after first round use, take turns second, third round, when fourth round changes inner nozzle brick, due to the design of inner nozzle brick straight hole, the expanding relatively bigger than normal and new inner nozzle brick small-bore of tap hole is not mated, in steel pouring process, because resistance to material aperture exists notch cuttype transition when molten steel flows out, the match synchronization of molten steel down-off on cannot being formed, in inner nozzle casting nozzle and tapping muzzle brick (major part brick) marginal existence vortex phenomenon, reduce the reaming speed at tapping muzzle brick (major part brick) and connecting end surface position, inner nozzle, inner nozzle blowhole edge abnormal erosion, the molten steel that cannot flow out in time from ladle canal easily flows out from the chamotte gap between cover brick (major part brick) and inner nozzle, cause the generation of wearing steel accident.
Patent CN201817512U discloses a kind of inner nozzle brick for converter tap hole slide gate, comprise inner nozzle brick body 1, the rim of the mouth 7 of the lower end projection of female mouth 4 that the upper end of inner nozzle brick is recessed into, inner nozzle brick, run through the steel outlet hole 3 of the female mouth of inner nozzle brick, rim of the mouth and brick body, a locating slot 8 is respectively had at the right and left of inner nozzle brick body 1 upper surface, inner nozzle brick body side is provided with stirrup 6, and steel outlet hole 3 sidewall of inner nozzle brick is provided with zirconium ring 2.Under equal processing condition, the work-ing life of inner nozzle brick improves 1 times on year-on-year basis, and safe operating life reaches more than 120 stoves, improves the efficiency of converter.But the problem of eddy generation phenomenon is not mated in the expanding and new inner nozzle brick small-bore of tap hole after this patent does not solve and repeatedly waters steel.
Summary of the invention
Technical problem to be solved in the utility model is customer service the deficiencies in the prior art, there is provided a kind of and optimize inner nozzle brick, reduce the reaming speed of tapping muzzle brick (major part brick), inner nozzle brick, slide brick, be conducive to the overall raising of service life of refractory material of Converter Skimming and the further lifting of security.
For achieving the above object, the utility model realizes by the following technical solutions:
A kind of optimization inner nozzle brick, be arranged on fixed frame inside, an end face is connected with tapping muzzle brick, an end face is connected with upper slide brick, the external side of inner nozzle brick is provided with the steel band of 3-8mm, and brick body inside is provided with steel outlet hole, and the top of steel outlet hole is hydraucone, bell-mouthed height is the 1/2-1/3 of inner nozzle brick height overall, and bell-mouthed gradient is 10-30 °.
Chamotte is applied between described tapping muzzle brick and inner nozzle brick.
Compared with prior art, the beneficial effects of the utility model are:
The aperture of the utility model steel outlet hole, by traditional through hole straight up and down, is optimized for toroidal; Outside body, increase steel band in inner nozzle simultaneously, improve thermal shock resistance and the resistance to fouling of inner nozzle.
Application hydraucone inner nozzle brick, can effectively reduce tapping muzzle brick (major part brick) due to inner nozzle brick straight hole design time, the expanding relatively bigger than normal and new inner nozzle brick small-bore of tap hole is not mated, the eddy current caused in steel pouring process occurs, thus greatly reduce the reaming speed at tapping muzzle brick (major part brick) and connecting end surface position, inner nozzle, effectively prevent molten steel from bringing the abnormal erosion at blowhole edge, inner nozzle due to the notch cuttype transition of aperture transition, what more can prevent molten steel from stitching with the chamotte of cover brick (major part brick) end contact at inner nozzle end face wears steel accident.Reduce the reaming speed of tapping muzzle brick (major part brick), inner nozzle brick, slide brick, be conducive to the overall raising of service life of refractory material of Converter Skimming and the further lifting of security.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that inner nozzle brick assembles schematic diagram with tapping muzzle brick.
Fig. 3 is tapping muzzle brick, inner nozzle brick, upper slide, lower skateboard and outer nozzle brick assembling schematic diagram.
In figure: 1-inner nozzle brick body 2-steel band 3-steel outlet hole 4-tapping muzzle brick 5-chamotte 6-upper slide 7-lower skateboard 8-lower nozzle brick
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is further illustrated:
As shown in Figure 1, be provided with the steel band 2 of 3-8mm outside inner nozzle brick body 1, brick body inside is provided with steel outlet hole 3, and the top of steel outlet hole 3 is hydraucone, and bell-mouthed height H is the 1/2-1/3 of inner nozzle brick height overall, and bell-mouthed gradient is 10-30 °, and namely α is 10-30 °.
As shown in Fig. 2-Fig. 3, inner nozzle brick 1 is arranged on fixed frame inside, and an end face is connected with tapping muzzle brick 4, and an end face is connected with upper slide brick 6, applies chamotte 5 between tapping muzzle brick 4 and inner nozzle brick 1.Upper slide brick 6 connects lower slide brick 7 below, and lower slide brick 7 is connected with outer nozzle brick 8 below.
The steel passage that waters that molten steel in converter is connected to form by tapping muzzle brick, inner nozzle brick, upper slide brick, lower slide brick and outer nozzle brick realizes converter and waters steel, by the flow moving back and forth control converter molten steel and the pushing off the slag of slide mechanism framework to ladle.
Be only ultimate principle of the present utility model above, not impose any restrictions the utility model, every foundation the utility model carries out equivalent variations and modification to it, all within the category of the art of this patent protection scheme.
Claims (2)
1. optimize inner nozzle brick for one kind, be arranged on fixed frame inside, an end face is connected with tapping muzzle brick, an end face is connected with upper slide brick, it is characterized in that, the external side of inner nozzle brick is provided with the steel band of 3-8mm, brick body inside is provided with steel outlet hole, the top of steel outlet hole is hydraucone, and bell-mouthed height is the 1/2-1/3 of inner nozzle brick height overall, and bell-mouthed gradient is 10-30 °.
2. one according to claim 1 optimizes inner nozzle brick, it is characterized in that, applies chamotte between described tapping muzzle brick and inner nozzle brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520385396.6U CN204752786U (en) | 2015-06-08 | 2015-06-08 | Optimize inner nozzle brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520385396.6U CN204752786U (en) | 2015-06-08 | 2015-06-08 | Optimize inner nozzle brick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204752786U true CN204752786U (en) | 2015-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520385396.6U Active CN204752786U (en) | 2015-06-08 | 2015-06-08 | Optimize inner nozzle brick |
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| CN (1) | CN204752786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108823353A (en) * | 2018-06-05 | 2018-11-16 | 马鞍山利尔开元新材料有限公司 | A kind of company's shuttle valve system of high life |
-
2015
- 2015-06-08 CN CN201520385396.6U patent/CN204752786U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108823353A (en) * | 2018-06-05 | 2018-11-16 | 马鞍山利尔开元新材料有限公司 | A kind of company's shuttle valve system of high life |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |