CN103911473A - Method for increasing service life of casthouse device mud gun mouth of blast furnace - Google Patents
Method for increasing service life of casthouse device mud gun mouth of blast furnace Download PDFInfo
- Publication number
- CN103911473A CN103911473A CN201410170786.1A CN201410170786A CN103911473A CN 103911473 A CN103911473 A CN 103911473A CN 201410170786 A CN201410170786 A CN 201410170786A CN 103911473 A CN103911473 A CN 103911473A
- Authority
- CN
- China
- Prior art keywords
- mud
- gun mouth
- big gun
- breather hole
- improved
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Blast Furnaces (AREA)
Abstract
The invention relates to a method for increasing the service life of a casthouse device mud gun mouth of a blast furnace. The method comprises the improvement of a mud sleeve manufacturing method and the improvement of a gun mouth structure; the method is characterized in that the improvement of the mud sleeve manufacturing method is as follows: a mud sleeve mold, in the surface of which air holes are formed, is adopted, a refractory material or a rammed material is processed by three steps, namely mud piling, compaction molding, and drying solidification, and then the improved mud sleeve can be obtained; the improved gun mouth structure is as follows: a seam allowance step is arranged on the rear part of the outer edge of a cylindrical gun mouth body, a tangent plane is formed on the cylindrical gun mouth body at the outer edge of the seam allowance step, and a pin hole is formed in the tangent plane. The method has the beneficial effects that the cylindricity and the surface smoothness of the mud sleeve are effectively improved, close fit of the inner cavity of the mud sleeve with the working face of the gun mouth is guaranteed, mud leakage and iron leakage are avoided, the burning loss probability of the end face of the gun mouth is greatly reduced, and due to the arrangement of the seam allowance step, the integrated steady and reliable area of the gun mouth can be effectively increased to avoid mud leakage and the compression resistance and the impact resistance during plugging can be improved to reduce the breakage of the 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 furnace stokehole equipment mud gun nozzle method in work-ing life that improves.
Background technology
Furnace stokehole equipment mud gun nozzle is the larger vulnerable part of consumption in ironmaking casthouse equipment, occupies certain weight/power ratio in casthouse equipment use, maintenance cost in adjusting.In the time of the stifled blast furnace iron notch of clay gun, big gun mouth directly contacts with red-hot molten iron, because of washing away of molten iron, be easy to ablatedly, generally go out an iron and burn a big gun mouth, therefore, in blast furnace plant, mud gun nozzle belongs to consumable accessory, and its consumption and maintenance of the equipment workload are sizable.
And the principal element of burning big gun mouth is because stemming leaks outside, be mainly that the mud dynamics of setting off firecrackers is excessive, causes stemming outwards to be gushed out along gap, because stemming temperature is very high, will cause big gun mouth to be burned because produce gap between big gun mouth and mud cover.Therefore reduce the gap between mud cover and big gun mouth and prevent and treat stemming to leak and become the key factor that prevents from burning big gun mouth.
Iron notch mud cover generally by refractory casting (or ramming) material through pug pile up, tamp moulding, baking and curing three steps complete.Through field observation, in mud sleeve forming compacting process, original solid compacting mould is because wet mud exhaust does not freely produce wet mud splash in the impact moment of compacting, cause mud to overlap the not accurate enough and pass internal surface plucking of local circularity, this has affected the sturdy tightness of big gun mouth and iron notch when clay gun is blocked up, cause because leaking mud runout (molten iron seepage) by big gun mouth periphery (majority is lower end) scaling loss, therefore, the work-ing life of big gun mouth is not only relevant with big gun mouth structure, material-structure, also closely related with the making quality of iron notch mud cover.
Meanwhile, because big gun mouth structure is unreasonable, also can cause with mud cover and coordinate imprecision, cause molten iron seepage, and then big gun mouth is burnt out, had a greatly reduced quality the work-ing life of big gun mouth.
Summary of the invention
The object of this invention is to provide a kind of raising mud that passes through and overlap the cooperation tightness between big gun mouth, anti-leak-stopping mud oozes the generation of iron phenomenon.Improve the method in the work-ing life of blast furnace mud gun mouth.
Object of the present invention can realize like this: mud cover making method improves and big gun mouth structure improves, and it is characterized in that:
Mud cover making method is improved as follows: use mud mold for surface has the mud mold of breather hole, passed through that moulding is piled up, tamped to pug, baking and curing three steps complete by refractory materials or ramming mass;
Big gun mouth structure after improvement is: the outer rim rear portion of cylindric big gun mouth body is provided with seam step, on the cylindric big gun mouth body of seam step outer rim, has a section, and section is provided with pin-and-hole.
Object of the present invention can also realize like this: the mud mold that described surface has breather hole is hollow cylinder, and the surface of hollow cylinder has equally distributed breather hole, and breather hole penetrates hollow cylinder and is communicated with the cavity in hollow cylinder;
Described breather hole is 2-3 row;
Described breather hole is that every row is 4-6, and adjacent two rows' hole is in staggered distribution.
The beneficial effect that can reach is: use with the mould of breather hole and guarantee that mud overlaps the air being extruded in wet mud compacting process and can get rid of in time from dies cavity, eliminate the plucking phenomenon of wet mud splash to hole wall, effectively improve cylindricity and the surface smoothness of mud cover, guarantee that mud cover inner chamber and big gun mouth working face fit tightly, avoid leak mud and ooze iron long-living, greatly reduce big gun mouth end face scaling loss probability; And the increase of big gun mouth seam step not only can effectively improve big gun mouth integral plaster solid area to avoid leak mud, and improve while blocking up resistance to compression impact resistance and broken to reduce big gun mouth; By the mud mold after improving and after novel big gun mouth is used in conjunction with, produce through stokehold and repeatedly observe and effect tracking evaluation, the maintenance intervals of mud cover has extended 3 times, improve 10 times the mean life of big gun mouth nearly, therefore greatly reduced the labour intensity of iron notch maintenance and the use cost of operation of blast furnace spare part.
Accompanying drawing explanation
Fig. 1 is the axial sectional view of blast furnace gun mud mold of the present invention;
Fig. 2 is the A-A sectional view of blast furnace gun mud 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 blast furnace mud gun mouth side-view of the present invention.
Embodiment
In accompanying drawing, the represented component title of each label is as follows:
Mud mold: mud cover 1, breather hole 2, hollow cylinder 3; Big gun mouth: cylindric big gun mouth body 4, seam step 5, pin-and-hole 6, section 7.
Below in conjunction with embodiment, the invention will be further described:
The present invention is a kind of furnace stokehole equipment mud gun nozzle method in work-ing life that improves, and comprises that mud cover making method is improved and big gun mouth structure improves, and it is characterized in that:
Mud cover making method is improved as follows: use mud mold for surface has the mud mold of breather hole, passed through that moulding is piled up, tamped to pug, baking and curing three steps complete by refractory materials or ramming mass;
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, on the cylindric big gun mouth body 4 of seam step 5 outer rims, has a section 7, and section 7 is provided with pin-and-hole 6.
According to Fig. 1, shown in Fig. 2: blast furnace gun mud mold of the present invention is the mud mold that surface has breather hole, comprise hollow cylinder 3, the surface of hollow cylinder 3 has equally distributed breather hole 2, breather hole 2 penetrates hollow cylinder 3 and is communicated with the cavity in hollow cylinder 3, guarantee that overlapping at mud the air being extruded in 1 wet mud compacting process can get rid of in time from dies cavity, eliminate the plucking phenomenon of wet mud splash to hole wall, effectively improve cylindricity and the surface smoothness of mud cover 1, can make mud overlap 1 inner chamber and big gun mouth working face fits tightly, avoid leak mud and ooze iron producing, greatly reduce big gun mouth end face scaling loss probability.
Described breather hole 2 is 2-3 row, and every row is that 4-6 is individual, and adjacent two rows' holes are in staggered distribution, and can make like this moisture of whole mold periphery all can discharge by inner chamber, and minimum on the impact of mud cover internal surface smooth finish.
Shown in Fig. 3, Fig. 4: be blast furnace mud gun mouth of the present invention, the setting of seam step 5, this not only can effectively improve big gun mouth integral plaster solid area to be avoided leak mud, and has improved while blocking up resistance to compression impact resistance and break to reduce big gun mouth; And section 7 protrudes from big gun mouth outer rim, so just increase the thickness at big gun mouth pin-and-hole place, increase the Burning corrosion resistance of big gun mouth.
Mud cover is made:
Old mud cover mud in iron oralia is destroyed, clean out, on iron mouth pore passage, put into appropriate mud cover mud, then mud mold of the present invention is inserted in iron mouth, mud cover mud is piled up, is tamped in moulding process, mud cover mud can produce a large amount of moistures because meeting high temperature, moisture can be released into by the breather hole on mud mold its inner chamber, and then be released into space outerpace, eliminate the plucking phenomenon of wet mud splash to hole wall, effectively improve cylindricity and the surface smoothness of mud cover, guarantee that mud cover inner chamber fits tightly with big gun mouth working face, avoid leak mud and ooze iron generation.
Use operation:
After mud cover is solid, mud gun nozzle of the present invention is aimed to iron notch mud cover, big gun mouth stretches into iron notch inside, seam step is stuck in mud cover outer end, then carries out stemming obstruction work, because the effect of the seam step of big gun mouth of the present invention, big gun mouth and mud cover closely snap together, inner stemming cannot flow out, and also can reduce the generation of oozing iron phenomenon, will make like this big gun mouth body reduce ablation loss as far as possible.
Claims (4)
1. improve the furnace stokehole equipment mud gun nozzle method in work-ing life, comprise that mud cover making method is improved and big gun mouth structure improves, it is characterized in that:
Mud cover making method is improved as follows: use mud mold for surface has the mud mold of breather hole, passed through that moulding is piled up, tamped to pug, baking and curing three steps complete by refractory materials or ramming mass;
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), on the cylindric big gun mouth body (4) of seam step (5) outer rim, has a section (7), and section (7) are provided with pin-and-hole (6).
2. a kind of furnace stokehole equipment mud gun nozzle method in work-ing life that improves according to claim 1: it is characterized in that: the mud mold that described surface has breather hole is hollow cylinder (3), the surface of hollow cylinder (3) has equally distributed breather hole (2), and breather hole (2) penetrates hollow cylinder (3) and is communicated with the cavity in hollow cylinder (3).
3. a kind of furnace stokehole equipment mud gun nozzle method in work-ing life that improves according to claim 2, is characterized in that: described breather hole (2) is 2-3 row.
4. a kind of furnace stokehole equipment mud gun nozzle method in work-ing life that improves according to claim 2, is characterized in that: described breather hole (2) is individual for 4-6 for every row, and adjacent two rows' holes are 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 |
|---|---|---|---|
| CN201310707833 | 2013-12-20 | ||
| CN201310707833.7 | 2013-12-20 | ||
| CN2013107078337 | 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103911473A true CN103911473A (en) | 2014-07-09 |
| CN103911473B CN103911473B (en) | 2017-11-10 |
Family
ID=51037473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103911473B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113574185A (en) * | 2019-03-13 | 2021-10-29 | Tmt出铁测量技术有限公司 | Taphole blocking gun |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
-
2014
- 2014-04-27 CN CN201410170786.1A patent/CN103911473B/en active Active
Patent Citations (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 |
Non-Patent Citations (2)
| Title |
|---|
| 侯春雪等: "首秦1号高炉长寿泥套的管理和维护", 《炼钢》 * |
| 韩德林等: "铁口浇注泥套试验研究报告", 《包钢科技》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113574185A (en) * | 2019-03-13 | 2021-10-29 | Tmt出铁测量技术有限公司 | Taphole blocking gun |
| CN113574185B (en) * | 2019-03-13 | 2022-10-25 | Tmt出铁测量技术有限公司 | Taphole blocking gun |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103911473B (en) | 2017-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103911473A (en) | Method for increasing service life of casthouse device mud gun mouth of blast furnace | |
| CN205188326U (en) | Can prevent iron notch of blast furnace structure of gas leakage | |
| CN105087872A (en) | Repairing method of RH refining furnace vacuum chamber tank bottom and circulation pipe | |
| CN209877630U (en) | Novel pot-type calcining furnace | |
| CN204367296U (en) | The hot flow path air cylinder structure of improvement | |
| CN111893231A (en) | Blast furnace hearth and casting long-life lifting method thereof | |
| CN203621479U (en) | Continuous casting machine tundish dry material heating mold | |
| CN108659867B (en) | Refractory brick reconstruction construction method for reconstructing drainage gradient at top of coke oven through hot repair | |
| CN205241719U (en) | Mud mechanism is beaten to clay gun of cooling pattern | |
| CN202224604U (en) | Easily-cleaned sand shooting nozzle device | |
| CN110819750B (en) | Blast furnace and plugging device for blast furnace shell and cooling wall | |
| CN103831401A (en) | Device for hot core box plug-in water-cooling sandblasting nozzle | |
| CN210615038U (en) | Casting sand shooting nozzle with wide adaptability | |
| KR101120523B1 (en) | Nozzle for Repairing Blast Furnace Body | |
| CN204367144U (en) | A kind of energy-conserving and environment-protective vented mould | |
| CN204874587U (en) | Blow component and compound brick of blowing | |
| CN207348976U (en) | A kind of water jacket design of integrated cylinder cap | |
| CN207787692U (en) | A kind of mouth of a river bricks die | |
| CN207175861U (en) | A kind of inner lining structure of one-time dedusting fork-shaped chute | |
| CN108977603B (en) | Repairing method for iron notch frame burn-through of iron-making blast furnace | |
| CN211331247U (en) | Coating nozzle for centrifugal casting | |
| CN220970686U (en) | Water jacket core sand core structure and core box for reducing air generation amount of sand core thick and large structure | |
| CN105400920A (en) | Press-in type repairing method for hot blast heater top heat-resisting lining | |
| JP5399180B2 (en) | Casting method using a core | |
| CN107282889B (en) | Complex thin-wall mud core in cold core making and forming method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
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. |
|
| CP03 | Change of name, title or address |