CN210596133U - Tuyere ceramic sleeve for blast furnace ironmaking - Google Patents
Tuyere ceramic sleeve for blast furnace ironmaking Download PDFInfo
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- CN210596133U CN210596133U CN201921512810.XU CN201921512810U CN210596133U CN 210596133 U CN210596133 U CN 210596133U CN 201921512810 U CN201921512810 U CN 201921512810U CN 210596133 U CN210596133 U CN 210596133U
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Abstract
The utility model belongs to the technical field of smelt, specifically provide a blast furnace is wind gap ceramic cover for ironmaking. The shape of the ceramic sleeve is a cone frustum tubular structure matched with the shape of the inner wall of the tuyere small sleeve, and a crushing chamfer is arranged at the joint of the end face of the large-diameter end of the ceramic sleeve and the outer wall of the ceramic sleeve. The caliber of the tuyere small sleeve can be changed, so that the frequency of replacing the tuyere small sleeve is reduced, the replacement time is greatly shortened, and the influence of adjusting the ventilation caliber on the production capacity is reduced. The broken chamfer is arranged at the large-diameter end of the ceramic sleeve, so that the broken ceramic sleeve can be conveniently disassembled and broken under the condition that the blast furnace is not in damping down in online production, the area of the blast furnace tuyere is adjusted more flexibly, the economic loss is lower, the labor intensity is lower when the caliber is adjusted, and the consumed time is shorter. The method is simple to implement, low in cost, good in application effect and strong in operability, and has little influence on blast furnace production.
Description
Technical Field
The utility model belongs to the technical field of smelt, concretely relates to blast furnace is wind gap ceramic cover for ironmaking.
Background
In the daily production process of the blast furnace, the air inlet area of each single air port is often required to be adjusted according to the working condition requirements, so that the air supply system achieves the purposes that the air inlet volume of a certain part of the air ports is increased and the air inlet volume of the other part of the air ports is relatively reduced according to the preset requirements. Under the normal condition, the adjustment wind gap area can only be realized through changing the tuyere small sleeve of different bores, because the tuyere small sleeve contains the circulation water route, need rest wind at least 60min during the change, and this change operation work load is very big, consumes a large amount of manpowers and time, causes the loss of reducing production simultaneously.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a ceramic sheathing of installation in blast furnace tuyere small sleeve, this ceramic sheathing outer wall cooperatees with the inner wall of tuyere small sleeve, can change the bore of tuyere small sleeve, makes ceramic sheathing have broken chamfer, makes can conveniently disassemble the broken ceramic sheathing that falls under the condition that blast furnace on-line production does not stop the wind to realize that blast furnace tuyere area adjustment is more nimble, economic loss is lower, and intensity of labour is lower, and is consuming time shorter. The method is simple to implement, low in cost, small in influence on blast furnace production and strong in operability.
In order to achieve the above object, the present invention provides the following technical solutions:
the tuyere ceramic sleeve for blast furnace ironmaking is in a cone frustum tubular structure matched with the inner wall of a tuyere small sleeve in shape, and a crushing chamfer angle is arranged at the joint of the end face of a large-diameter end of the ceramic sleeve and the outer wall of the ceramic sleeve.
In the tuyere ceramic sleeve for blast furnace ironmaking as described above, as a preferred scheme, a flow guiding chamfer is provided at a joint of an end face of the large-diameter end of the ceramic sleeve and an inner wall of the ceramic sleeve.
In the tuyere ceramic sleeve for blast furnace ironmaking as described above, as a preferable scheme, the chamfer surface of the crushing chamfer is further connected with the inner wall of the ceramic sleeve.
In the tuyere ceramic sleeve for blast furnace ironmaking as described above, as a preferable scheme, an included angle α between the chamfer surface of the crushing chamfer and the cross section of the ceramic sleeve is 45 ° to 60 °.
In the tuyere ceramic sleeve for blast furnace ironmaking as described above, as a preferable scheme, a projection width of the chamfer surface of the diversion chamfer on the cross section of the ceramic sleeve is greater than or equal to a projection width of the chamfer surface of the crushing chamfer on the cross section of the ceramic sleeve.
In the tuyere ceramic sleeve for blast furnace ironmaking as described above, as a preferable scheme, an included angle β between the chamfer surface of the diversion chamfer and the cross section of the ceramic sleeve is equal to an included angle α between the chamfer surface of the crushing chamfer and the cross section of the ceramic sleeve.
In the tuyere ceramic sleeve for blast furnace iron making, as a preferred scheme, the outer wall of the ceramic sleeve is provided with a cracking-assisting groove, the cracking-assisting groove is sunken to a preset depth on the outer wall of the ceramic sleeve, the cracking-assisting groove is arranged along the bus direction of the outer wall of the ceramic sleeve, and two ends of the cracking-assisting groove are away from two ends of the ceramic sleeve by preset distances.
In the tuyere ceramic bushing for blast furnace iron making as described above, preferably, the plurality of the cracking-assistant grooves are provided and are uniformly distributed along the circumferential direction of the ceramic bushing.
In the tuyere ceramic bushing for blast furnace iron making as described above, preferably, the wall thickness of the ceramic bushing is gradually increased from the large diameter end to the small diameter end.
In the tuyere ceramic sleeve for blast furnace ironmaking as described above, as a preferable scheme, the chamfer surface of the guide chamfer intersects with the chamfer surface of the crushing chamfer.
Compared with the closest prior art, the utility model provides a technical scheme has following beneficial effect:
1. the utility model provides a blast furnace is wind gap ceramic sheathing for ironmaking, this ceramic sheathing outer wall cooperatees with the inner wall of tuyere small sleeve, can change the bore of tuyere small sleeve to avoid frequently changing the tuyere small sleeve, shortened the change time greatly, reduced the influence of adjustment bore to output. The ceramic sleeve has simple structure, low manufacturing cost and convenient implementation.
2. The ceramic sleeve crusher has the advantages that the application effect is good, the crushing chamfer is arranged at the large-diameter end of the ceramic sleeve, so that the ceramic sleeve can be conveniently disassembled and crushed under the condition that the blast furnace is not in damping down in online production, the area of the blast furnace tuyere is adjusted more flexibly, the economic loss is lower, the labor intensity is lower when the caliber is adjusted, and the consumed time is shorter. The method is simple to implement, low in cost, good in application effect and strong in operability, and has little influence on blast furnace production.
3. Normal production is not influenced, and when the ceramic sleeve is dismantled, the working environment can be in a blast furnace production state, so that economic losses such as production reduction caused by damping down are avoided.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:
FIG. 1 is a schematic view of an installation of a tuyere ceramic sleeve (thin wall without diversion chamfer) for blast furnace ironmaking provided by an embodiment of the present invention;
FIG. 2 is a schematic view of another tuyere ceramic sleeve (thick wall having a flow guiding angle) for blast furnace ironmaking according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a tuyere ceramic sleeve for blast furnace ironmaking according to an embodiment of the present invention;
fig. 4 is a partial structure diagram of the crushing chamfer and the flow guiding chamfer in fig. 2.
In the figure: 1. a tuyere small sleeve; 2. a wear layer; 3, a ceramic sleeve; 4. steel chisel; 5. crushing and chamfering; 6. flow guiding chamfering; 7. and (4) a cracking-assistant groove.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense, and may be, for example, either fixed or detachable; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
According to the embodiment of the utility model, as shown in fig. 1 to 4, the utility model provides a blast furnace is wind gap ceramic cover 3 for ironmaking, this ceramic cover 3's shape be with the inner wall shape assorted truncated cone tubular structure of tuyere small sleeve 1, the terminal surface of the big footpath end of ceramic cover 3 is provided with broken chamfer 5 with ceramic cover 3's outer wall junction. The thick black arrow in the drawing, which is the same as the length direction of the drill steel 4, indicates the force direction when the ceramic bushing 3 is crushed (i.e. the moving direction of the drill steel 4 when the ceramic bushing 3 is crushed). The through hole formed by the ceramic sheath 3 may also be truncated cone-shaped.
When the tuyere small sleeve 1 is used, when the ventilation volume of the tuyere small sleeve 1 needs to be reduced, damping down is performed, the ceramic sleeve 3 with a proper inner diameter is selected to be installed on the inner wall of the tuyere small sleeve 1, so that the ventilation volume is adjusted, the ceramic sleeve 3 needs to be mounted and stopped for about 30min, time is saved compared with the time for replacing the tuyere small sleeve 1 (about 60min is consumed), the installation is labor-saving, when the ventilation volume of the tuyere small sleeve 1 needs to be increased, a worker at the inlet of the tuyere small sleeve 1 stretches the steel rod 4 into the crushing chamfer 5 at the large-diameter end of the ceramic sleeve 3, then the steel rod 4 is forcibly hammered by using tools such as an iron hammer and the like, the ceramic sleeve 3 can be disassembled and crushed, fragments of the crushed ceramic sleeve 3 can be brought into a blast furnace along with high-temperature blast of the blast furnace and are melted into furnace slag; the operation environment can be in a blast furnace production state, so that economic losses such as production reduction caused by damping down are avoided.
The inner wall of the tuyere small sleeve 1 is provided with the wear-resistant layer 2, and when the ceramic sleeve 3 is not used, the wear-resistant layer 2 can resist the wear of blast furnace hot blast, so that the service life of the tuyere small sleeve 1 is prolonged.
As shown in fig. 1, when the thickness of the ceramic sleeve 3 is relatively thin, for example, the thickness is less than or equal to 1.5cm, in order to facilitate the insertion of the drill steel 4 into the breaking chamfer 5, the end surface of the large-diameter end of the ceramic sleeve 3 is a chamfer surface of the breaking chamfer 5, and the chamfer surface is an inclined surface of the breaking chamfer 5, that is, the chamfer surface of the breaking chamfer 5 is also connected with the inner wall of the ceramic sleeve 3, and at this time, the ceramic sleeve 3 may be referred to as a thin-walled ceramic sleeve without diversion chamfer. When in use, the front end of the wedge-shaped head of the steel chisel 4 usually extends into the crushing chamfer 5.
As shown in fig. 2, when the thickness of the ceramic sleeve 3 is relatively thick, for example, the thickness is greater than 1.5cm, in order to reduce the influence of the crushing chamfer 5 on the shunting in the flowing direction of the blast furnace hot blast, a diversion chamfer 6 is arranged at the joint of the end surface of the large-diameter end of the ceramic sleeve 3 and the inner wall of the ceramic sleeve 3 to reduce the shunting, so that more blast furnace hot blast can more easily flow to one side of the inner cavity of the ceramic sleeve 3.
Further, the cross section of the ceramic sleeve 3 is perpendicular to the axis of the ceramic sleeve 3, the cross section of the ceramic sleeve 3 can be parallel to the end face of the large-diameter end of the ceramic sleeve 3, the included angle α between the chamfer face of the crushing chamfer 5 and the cross section of the ceramic sleeve 3 is 45-60 degrees, the projection width of the chamfer face of the flow guide chamfer 6 on the cross section of the ceramic sleeve 3 is larger than or equal to the projection width of the chamfer face of the crushing chamfer 5 on the cross section of the ceramic sleeve 3, and the included angle β between the chamfer face of the flow guide chamfer 6 and the cross section of the ceramic sleeve 3 is equal to the included angle α between the chamfer face of the crushing chamfer 5 and the end face.
In order to prevent that ceramic sheathing 3 only breaks 5 departments of broken chamfer and all the other parts do not break when 4 broken ceramic sheathes of drill rod 3 the embodiment of the utility model provides an, ceramic sheathing 3's outer wall sets up helps crack groove 7, helps crack groove 7 cave in and predetermine the degree of depth in ceramic sheathing 3's outer wall, helps crack groove 7 along the generating line direction setting of ceramic sheathing 3 outer wall, helps crack groove 7's both ends to predetermine the distance apart from ceramic sheathing 3's both ends, for example 1 cm.
Further, the cracking-aid grooves 7 are provided in plural, for example, 6, and the plural cracking-aid grooves 7 are uniformly distributed along the circumferential direction of the ceramic sheath 3.
In order to reduce the weight of the ceramic sheath 3 as much as possible and to make the ceramic sheath 3 reduce the diameter slowly relative to the tuyere small sheath 1, in the embodiment of the present invention, the wall thickness of the ceramic sheath 3 is gradually increased from the large diameter end to the small diameter end.
Because the thickness of ceramic sheathing 3 all is less than 5cm generally, in order to maximize broken chamfer 5 so that the breakage demolishs, in the embodiment of the utility model, the chamfer face of water conservancy diversion chamfer 6 intersects with the chamfer face of broken chamfer 5.
To sum up, the utility model provides a blast furnace is wind gap ceramic sheathing for ironmaking, this ceramic sheathing outer wall cooperatees with the inner wall of wind gap snare, can change the bore of wind gap snare to avoid changing the wind gap snare, shortened the change time greatly, reduced the influence of adjustment bore to output. The broken chamfer is arranged at the large-diameter end of the ceramic sleeve, so that the broken ceramic sleeve can be conveniently disassembled and broken under the condition that the blast furnace is not in damping down in online production, the area of the blast furnace tuyere is adjusted more flexibly, the economic loss is lower, the labor intensity is lower when the caliber is adjusted, and the consumed time is shorter. The method is simple to implement, low in cost, good in application effect and strong in operability, and has little influence on blast furnace production.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The tuyere ceramic sleeve for blast furnace iron making is characterized in that the ceramic sleeve is of a cone frustum tubular structure matched with the inner wall of a tuyere small sleeve in shape, and a crushing chamfer angle is arranged at the joint of the end face of a large-diameter end of the ceramic sleeve and the outer wall of the ceramic sleeve.
2. The tuyere ceramic bushing for blast furnace ironmaking according to claim 1, wherein a flow guiding chamfer is provided at a junction of an end surface of the large diameter end of the ceramic bushing and an inner wall of the ceramic bushing.
3. The tuyere ceramic bushing for blast furnace ironmaking according to claim 1, wherein the chamfer surface of the crushing chamfer is further connected with an inner wall of the ceramic bushing.
4. The tuyere ceramic bushing for blast furnace ironmaking according to claim 1, wherein an angle α between a chamfer surface of the crushing chamfer and a cross section of the ceramic bushing is 45 ° to 60 °.
5. The tuyere ceramic bushing for blast furnace ironmaking according to claim 2, wherein a projected width of the chamfer surface of the diversion chamfer on the cross section of the ceramic bushing is greater than or equal to a projected width of the chamfer surface of the crushing chamfer on the cross section of the ceramic bushing.
6. The tuyere ceramic bushing for blast furnace ironmaking according to claim 2, wherein an angle β between the chamfer of the diversion chamfer and the cross section of the ceramic bushing is equal to an angle α between the chamfer of the crushing chamfer and the cross section of the ceramic bushing.
7. The tuyere ceramic sleeve for blast furnace ironmaking according to claim 1, wherein a cracking-assisting groove is provided in an outer wall of the ceramic sleeve, the cracking-assisting groove is recessed in the outer wall of the ceramic sleeve by a predetermined depth, the cracking-assisting groove is provided along a generatrix direction of the outer wall of the ceramic sleeve, and both ends of the cracking-assisting groove are spaced from both ends of the ceramic sleeve by a predetermined distance.
8. The tuyere ceramic bushing for blast furnace ironmaking according to claim 7, wherein a plurality of the cracking-aid grooves are provided, and the plurality of the cracking-aid grooves are uniformly distributed along a circumferential direction of the ceramic bushing.
9. A tuyere ceramic bushing for blast furnace ironmaking according to claim 1, wherein the wall thickness of the ceramic bushing gradually increases from the large diameter end to the small diameter end.
10. The tuyere ceramic sleeve for blast furnace ironmaking according to claim 2, wherein the chamfer surface of the diversion chamfer intersects the chamfer surface of the crushing chamfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921512810.XU CN210596133U (en) | 2019-09-11 | 2019-09-11 | Tuyere ceramic sleeve for blast furnace ironmaking |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921512810.XU CN210596133U (en) | 2019-09-11 | 2019-09-11 | Tuyere ceramic sleeve for blast furnace ironmaking |
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| Publication Number | Publication Date |
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| CN210596133U true CN210596133U (en) | 2020-05-22 |
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| CN201921512810.XU Active CN210596133U (en) | 2019-09-11 | 2019-09-11 | Tuyere ceramic sleeve for blast furnace ironmaking |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110628975A (en) * | 2019-09-11 | 2019-12-31 | 大冶特殊钢有限公司 | Tuyere ceramic sleeve for blast furnace ironmaking |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110628975A (en) * | 2019-09-11 | 2019-12-31 | 大冶特殊钢有限公司 | Tuyere ceramic sleeve for blast furnace ironmaking |
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