CN103911473B - A kind of method for improving furnace stokehole equipment mud gun nozzle service life - Google Patents
A kind of method for improving furnace stokehole equipment mud gun nozzle service life Download PDFInfo
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- CN103911473B CN103911473B CN201410170786.1A CN201410170786A CN103911473B CN 103911473 B CN103911473 B CN 103911473B CN 201410170786 A CN201410170786 A CN 201410170786A CN 103911473 B CN103911473 B CN 103911473B
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Abstract
The present invention relates to a kind of method for improving furnace stokehole equipment mud gun nozzle service life, including mud set preparation method is improved and big gun mouth structure improves, it is characterised in that：Mud set preparation method is improved as follows：The use of mud mold is the mud mold that surface is provided with air-vent, is piled up by refractory material or ramming mass by pug, tamp shaping, the step of baking and curing three completes；Big gun mouth structure after improvement is：The outer rim rear portion of cylindric big gun mouth body is provided with seam step, there is a section on the cylindric big gun mouth body of seam step outer rim, and section is provided with pin-and-hole.The beneficial effect that can reach is to effectively improve the cylindricity and surface smoothness of mud set, ensure that mud set inner chamber is brought into close contact with big gun mouth working face, avoid Lou mud and ooze iron generation, greatly reduce big gun mouth end face scaling loss probability, and the increase of seam step, big gun mouth can not only be effectively improved, and integrally sturdy area to avoid Lou mud, and improves when blocking up resistance to compression impact resistance to reduce the rupture of big gun mouth.
Description
Technical field
The present invention relates to a kind of steel-refining blast furnace mud gun mouth, belong to metallurgical technology field, be specially a kind of raising blast furnace
The method of casthouse equipment mud gun nozzle service life.
Background technology
Furnace stokehole equipment mud gun nozzle is to smelt iron the quick-wear part that consumption is larger in casthouse equipment, is made in casthouse equipment
Occupy certain weight/power ratio in being adjusted with, maintenance cost.When clay gun blocks up blast furnace iron notch, big gun mouth directly connects with red-hot molten iron
Touch, because of washing away for molten iron, it is easy to it is ablated, typically go out an iron and burn a big gun mouth, therefore, mud gun nozzle in blast furnace plant
Belong to consumable accessory, its consumption and plant maintenance workload are sizable.
And the principal element for burning big gun mouth is because stemming leaks outside, it is primarily due to produce gap between big gun mouth and mud set, beats
Stemming dynamics is excessive, causes stemming outwards to be gushed out along gap, because stemming temperature is very high, may result in big gun mouth and is burned.Therefore subtract
Gap and preventing and treating stemming between small mud set and big gun mouth are leaked as preventing from burning the key factor of big gun mouth.
Tapping hole mud is covered typically by refractory casting（Or ramming）Material is piled up through pug, tamps shaping, the step of baking and curing three
Complete.Through field observation, during the compacting of mud sleeve forming, original solid compacting mould due to the exhaust of wet mud it is not smooth and
Wet mud splash is produced in the impact moment of compacting, causing mud to cover, local circularity is not accurate enough and pass inner surface plucking, this
Big gun mouth and tapping hole sturdy tightness when clay gun is blocked up are have impact on, is caused because of leakage mud runout（Molten iron seepage）And by big gun mouth periphery
（Majority is lower end）Scaling loss, therefore, the service life of big gun mouth are not only relevant with big gun mouth structure, material-structure, also with tapping hole
The production quality of mud set is closely related.
Simultaneously as big gun mouth structure is unreasonable, it will also result in and cover cooperation imprecision with mud, cause molten iron seepage, and then will
Big gun mouth is burnt out, and the service life of big gun mouth is had a greatly reduced quality.
The content of the invention
It is an object of the invention to provide a kind of cooperation tight ness rating by improving between mud set and big gun mouth, anti-leak-stopping mud oozes iron
The generation of phenomenon.The method for improving the service life of blast furnace mud gun mouth.
The purpose of the present invention can be achieved in that：Mud set preparation method is improved and big gun mouth structure improves, it is characterised in that：
Mud set preparation method is improved as follows：The use of mud mold is the mud mold that surface is provided with air-vent, by fire proofed wood
Expect or ramming mass is piled up by pug, tamps shaping, the step of baking and curing three completes；
Big gun mouth structure after improvement is：The outer rim rear portion of cylindric big gun mouth body is provided with seam step, seam step outer rim
There is a section on cylindric big gun mouth body, section is provided with pin-and-hole.
The purpose of the present invention can also be achieved in that：The mud mold that described surface is provided with air-vent is hollow cylinder
Body, the surface of hollow cylinder are provided with equally distributed air-vent, and air-vent is penetrated in hollow cylinder connection hollow cylinder body
Cavity；
Described air-vent is arranged for 2-3；
Described air-vent is that every row is 4-6, and the hole of adjacent two row is in staggered distribution.
The beneficial effect that can reach is：Ensure that mud covers what is be extruded during wet mud is tamped using the mould with air-vent
Air can exclude in time from dies cavity, eliminate plucking phenomenon of the wet mud splash to hole wall, effectively improve the cylindricity of mud set
And surface smoothness, it is ensured that mud set inner chamber is brought into close contact with big gun mouth working face, avoid Lou mud with to ooze iron long-living, greatly reduce big gun mouth
End face scaling loss probability；And the increase of big gun mouth seam step, can not only effectively improve big gun mouth integrally sturdy area to avoid Lou mud,
And improve resistance to compression impact resistance when blocking up and ruptured with reducing big gun mouth；Mud mold after improvement and new big gun mouth are matched somebody with somebody
After conjunction use, through stokehold production, observation and effect tracking evaluation, the maintenance period of mud set extend 3 times repeatedly, and big gun mouth is put down
Equal service life improves nearly 10 times, therefore greatly reduces the labor intensity of tapping hole maintenance and making for operation of blast furnace spare part
Use cost.
Brief description of the drawings
Fig. 1 is the axial sectional view of blast furnace mud stemming mold of the present invention；
Fig. 2 is the A-A sectional views of blast furnace mud stemming mold of the present invention；
Fig. 3 is the axial sectional view of blast furnace mud gun mouth of the present invention；
Fig. 4 is the blast furnace mud gun mouth side view of the present invention.
Embodiment
Parts title in accompanying drawing represented by each label is as follows：
Mud mold：Mud set 1, air-vent 2, hollow cylinder 3；Big gun mouth：Cylindric big gun mouth body 4, seam step 5, pin-and-hole
6th, section 7.
With reference to embodiment, the invention will be further described：
The present invention changes for a kind of method of raising furnace stokehole equipment mud gun nozzle service life, including mud set preparation method
Enter and improved with big gun mouth structure, it is characterised in that：
Mud set preparation method is improved as follows：The use of mud mold is the mud mold that surface is provided with air-vent, by fire proofed wood
Expect or ramming mass is piled up by pug, tamps shaping, the step of baking and curing three completes；
Big gun mouth structure after improvement is：The outer rim rear portion of cylindric big gun mouth body 4 is provided with seam step 5, the outer rim of seam step 5
Cylindric big gun mouth body 4 on have a section 7, section 7 is provided with pin-and-hole 6.
According to Fig. 1, Fig. 2：The blast furnace mud stemming mold of the present invention is provided with the mud mold of air-vent, bag for surface
Hollow cylinder 3 is included, the surface of hollow cylinder 3 is provided with equally distributed air-vent 2, and air-vent 2 penetrates hollow cylinder 3 and connected
Cavity in logical hollow cylinder 3, it is ensured that the air being extruded during the wet mud compacting of mud set 1 can be timely from dies cavity
Exclude, eliminate plucking phenomenon of the wet mud splash to hole wall, effectively improve the cylindricity and surface smoothness of mud set 1, mud can be made to cover 1
Inner chamber is brought into close contact with big gun mouth working face, is avoided Lou mud and is oozed iron generation, greatly reduces big gun mouth end face scaling loss probability.
Described air-vent 2 is arranged for 2-3, and often row is 4-6, and the hole of adjacent two row is in staggered distribution, and can so make whole mould
The moisture on tool periphery can all be discharged by inner chamber, and it is minimum that the influence of inner surface finish is covered on mud.
According to Fig. 3, Fig. 4：For the blast furnace mud gun mouth of the present invention, the setting of seam step 5, this can not only be effective
Improving big gun mouth, integrally sturdy area to avoid Lou mud, and improves resistance to compression impact resistance when blocking up and ruptured with reducing big gun mouth；
And section 7 protrudes from big gun mouth outer rim, which adds the thickness at big gun mouth pin-and-hole, the Burning corrosion resistance of increase big gun mouth.
Mud set makes：
Old mud set mud in iron oralia is destroyed, cleaned out, appropriate mud set mud is put on iron mouth pore passage, then incite somebody to action this
The mud mold of invention is inserted in iron mouth, and in being piled up to mud set mud, tamping forming process, mud covers mud can produce because meeting high temperature
Raw a large amount of moistures, moisture can be discharged by the air-vent on mud mold to its inner chamber, and then are discharged to exterior space, eliminated
Wet mud splash effectively improves cylindricity and surface smoothness that mud covers, it is ensured that mud covers inner chamber and big gun mouth to the plucking phenomenon of hole wall
Working face is brought into close contact, and is avoided Lou mud and is oozed iron generation.
Use operation：
After mud set is solid, the mud gun nozzle of the present invention is directed at tapping hole mud set, big gun mouth is stretched into inside tapping hole, seam
Step is stuck in mud set outer end, then carries out stemming and blocks work, because the effect of the seam step of big gun mouth of the present invention, big gun mouth and mud
Set closely snaps together, and internal stemming can not flow out, it may also reduce ooze the generation of iron phenomenon, big gun mouth body is tried one's best
Reduce ablation loss.
Claims (4)
1. a kind of method for improving furnace stokehole equipment mud gun nozzle service life, including mud set preparation method is improved and big gun mouth knot
Structure improves, it is characterised in that：
Mud set preparation method is improved as follows：The use of mud mold is the mud mold that surface is provided with air-vent, is passed through by refractory material
Cross that pug is piled up, tamps shaping, the step of baking and curing three completes；
Big gun mouth structure after improvement is：Cylindric big gun mouth body（4）Outer rim rear portion be provided with seam step（5）, seam step（5）Outside
The cylindric big gun mouth body of edge（4）On have a section（7）, section（7）It is provided with pin-and-hole（6）.
A kind of 2. method for improving furnace stokehole equipment mud gun nozzle service life according to claim 1：Its feature exists
In：The mud mold that described surface is provided with air-vent is hollow cylinder（3）, hollow cylinder（3）Surface be provided with uniformly
The air-vent of distribution（2）, air-vent（2）Penetrate hollow cylinder（3）Connect hollow cylinder（3）Interior cavity.
3. a kind of method for improving furnace stokehole equipment mud gun nozzle service life according to claim 2, its feature exist
In：Described air-vent（2）Arranged for 2-3.
4. a kind of method for improving furnace stokehole equipment mud gun nozzle service life according to claim 2, its feature exist
In：Described air-vent（2）It it is 4-6 for every row, the hole of adjacent two row is in staggered distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410170786.1A CN103911473B (en) | 2013-12-20 | 2014-04-27 | A kind of method for improving furnace stokehole equipment mud gun nozzle service life |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013107078337 | 2013-12-20 | ||
| CN201310707833 | 2013-12-20 | ||
| CN201310707833.7 | 2013-12-20 | ||
| CN201410170786.1A CN103911473B (en) | 2013-12-20 | 2014-04-27 | A kind of method for improving furnace stokehole equipment mud gun nozzle service life |
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| Publication Number | Publication Date |
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| CN103911473A CN103911473A (en) | 2014-07-09 |
| CN103911473B true CN103911473B (en) | 2017-11-10 |
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| CN201410170786.1A Active CN103911473B (en) | 2013-12-20 | 2014-04-27 | A kind of method for improving furnace stokehole equipment mud gun nozzle service life |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3938547B1 (en) * | 2019-03-13 | 2023-02-15 | Tmt - Tapping Measuring Technology Sàrl | Taphole plugging gun |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2854925B2 (en) * | 1990-05-16 | 1999-02-10 | 川崎製鉄株式会社 | Injection cooling method of remaining charge in furnace during air blow off operation of blast furnace |
| JPH08311513A (en) * | 1995-05-15 | 1996-11-26 | Shinagawa Refract Co Ltd | Seal material for mud gun in blast furnace and method for preventing leakage of mud material |
| CN200946153Y (en) * | 2006-08-31 | 2007-09-12 | 黄述生 | Blast furnace taphole gun muzzle head |
| CN200999251Y (en) * | 2007-01-19 | 2008-01-02 | 宝山钢铁股份有限公司 | Flexible gun head for blast furnace front hole blocking |
| CN201261788Y (en) * | 2008-09-30 | 2009-06-24 | 戴光荣 | Novel mud gun nozzle |
| CN201395604Y (en) * | 2009-04-16 | 2010-02-03 | 宝山钢铁股份有限公司 | Gun head of blast furnace tapping-hole clay gun |
| CN202595170U (en) * | 2012-03-27 | 2012-12-12 | 上海梅山钢铁股份有限公司 | Blast-furnace gun nozzle capable of preventing mud from leaking |
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Address after: 063200 Hebei province Tangshan City Caofeidian District Tang Hai Town West Economic Zone Patentee after: TANGSHAN CAOFEIDIAN DISTRICT SHOUYAN MACHINERY CO., LTD. Address before: 063200 West Tanghai Economic Zone, Tanghai, Tangshan City, Hebei Patentee before: TANGHAI SHOUYAN MACHINERY CO., LTD. |