CN115747396A - Iron notch blocking device and method under state of iron notch mud sleeve damage - Google Patents
Iron notch blocking device and method under state of iron notch mud sleeve damage Download PDFInfo
- Publication number
- CN115747396A CN115747396A CN202211643892.8A CN202211643892A CN115747396A CN 115747396 A CN115747396 A CN 115747396A CN 202211643892 A CN202211643892 A CN 202211643892A CN 115747396 A CN115747396 A CN 115747396A
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- Prior art keywords
- taphole
- plugging
- stemming
- gun head
- gun
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Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 64
- 229910052742 iron Inorganic materials 0.000 title claims description 32
- 230000000903 blocking effect Effects 0.000 title abstract description 20
- 238000003780 insertion Methods 0.000 claims abstract description 22
- 230000037431 insertion Effects 0.000 claims abstract description 22
- 230000003628 erosive effect Effects 0.000 claims abstract description 9
- 239000004927 clay Substances 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 3
- 239000002893 slag Substances 0.000 description 6
- 238000010079 rubber tapping Methods 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Blast Furnaces (AREA)
Abstract
The invention discloses a taphole blocking device and a method under a damaged state of a taphole mud sleeve, which comprises a gun head and an insertion section connected with the gun head, wherein the sections of the gun head and the insertion section are both circular, a stemming filling area is filled in the gun head, a stemming filling area is filled in the insertion section, stemming is added in the stemming filling area through a hydraulic mud gun, the insertion section comprises a mud gun end and a jaw part matched with the hydraulic mud gun, a linear space is reserved in the stemming in the gun head, a blocking part is arranged in the linear space, the blocking part is filled in the linear space through the hydraulic mud gun, and the linear space is a circular space which is 100-150mm dug in the stemming area in the gun head; in this case, the blocking part is used and can be directly inserted into the damaged gun head and the jaw, and the blocking part is made of rubber and has elasticity, so that the local erosion of the taphole mud sleeve can be filled in the blocking process.
Description
Technical Field
The invention relates to the technical field of metallurgical equipment, in particular to a taphole plugging device and method under the state that a taphole mud sleeve is damaged.
Background
The blast furnace taphole is the most critical part of the blast furnace and mainly comprises a taphole mud sleeve, a taphole pore channel and the like. In the normal production process of the blast furnace, the slag iron generated by smelting needs to be discharged from the iron notch of the blast furnace on time, so that the aim of continuous smelting of the blast furnace is fulfilled. When the slag iron of the blast furnace hearth is completely discharged, the air comes from the iron notch, and the operation of blocking the iron notch is needed. The blast furnace taphole plugging is characterized in that after the blast furnace taphole is blown, a taphole is sealed by using mud gun equipment filled with anhydrous stemming, then the anhydrous stemming is pressed into a taphole pore passage, after 5-20min, the anhydrous stemming is solidified in the taphole pore passage, a hydraulic mud gun is withdrawn, when next tapping is performed, the taphole pore passage filled with the anhydrous stemming is drilled by a tapping machine, and the process of discharging slag iron from the blast furnace is realized in a circulating and alternating manner.
When the taphole mud sleeve of the blast furnace is used for tapping, local erosion occurs and a phenomenon of a false mud sleeve is generated due to long-term use of the taphole mud sleeve. After the taphole is drilled, a large amount of slag iron liquid flows out from the taphole hole channel at the flow speed of every 7t/min, and because the taphole false mud sleeve body is loose, slag iron jet flows out from the taphole hole at the center of the taphole mud sleeve, so that the corrosion phenomenon is generated on the taphole false mud sleeve body, and the split slip phenomenon is caused. Along with the extension of tapping time, erosion is aggravated, so that the false mud sleeve of the iron notch is partially damaged, and the contact between the gun head and the iron notch mud sleeve is not tight in the process of plugging the iron notch of the hydraulic mud gun, so that the iron notch cannot be plugged smoothly.
Disclosure of Invention
The invention aims to provide a taphole plugging device and a taphole plugging method under the damaged state of a taphole mud sleeve.
The purpose of the invention is realized by the following technical scheme: the utility model provides a stifled iron mouthful device under iron mouthful mud cover damaged condition, includes the big gun head, its characterized in that: the gun head and the section of the insertion section are both circular, a stemming filling area is filled in the gun head, a stemming filling area is filled in the insertion section, stemming is added in the stemming filling area through a hydraulic clay gun, and the insertion section is matched with a clay gun end and a jaw part of the hydraulic clay gun;
a linear space is reserved in the stemming in the gun head, and a plugging part is arranged in the linear space.
Furthermore, the plugging part is filled by a hydraulic clay gun and then is placed into a linear space.
Further, the linear space is a circular space which is 100-150mm dug out in the stemming area in the gun head;
the thickness of the blocking part 4 is matched with the round space which is formed by digging out the stemming area by 100-150 mm.
Further, the plugging part is made of high-temperature rubber, and the diameter of the plugging part corresponds to that of the taphole mud sleeve.
Furthermore, the mouth plugging part is directly contacted with the taphole mud sleeve, and the taphole mud sleeve is fixed at the outlet end of the taphole hole channel and fills the local damaged part of the taphole mud sleeve.
Further, the outer diameter of the gun head is 250mm, the inner diameter of the gun head is 150mm, and the thickness of the gun head ranges from 50mm to 100mm.
Further, the outer diameter of the insertion section is 148mm, the inner diameter is 130mm, and the length of the insertion section is 50mm, 100mm or 150mm.
Furthermore, the plugging part has fire resistance and flexibility, and can fill the local erosion of the taphole mud sleeve in the plugging process.
A method for blocking an iron notch under the state that an iron notch mud sleeve is damaged comprises the following steps;
filling a stemming filling area with stemming;
secondly, digging out a linear space of 100-150mm from the stemming in the gun head of the clay gun;
thirdly, placing the accident plugging device filled with mud into the scratched gun head space;
and fourthly, performing the plugging operation, wherein the plugging part directly contacts the taphole mud sleeve, and the local damaged part of the taphole mud sleeve is filled due to the ductility of the plugging part, so that the tight fitting effect is achieved, and the purpose of plugging the taphole in an accident state is achieved.
Compared with the prior art, the invention has the beneficial effects that:
in order to avoid loosening of the false taphole mud sleeve body in a use state, slag iron jet flows out of a taphole eye at the center of the taphole mud sleeve and erodes the false taphole mud sleeve body to cause slipping.
Meanwhile, as the tapping time is prolonged, the erosion is aggravated, and the local defect condition of the taphole pseudo mud sleeve is serious, the taphole blocking part (gun cushion) is arranged to have fire resistance and flexibility, and the taphole mud sleeve can be filled by local erosion in the taphole blocking process to be repaired for the taphole blocking operation.
In this case, the blocking part is used and can be directly inserted into the damaged gun head and the jaw, and the blocking part is made of rubber and has elasticity, so that the local erosion of the taphole mud sleeve can be filled in the blocking process, and the blocking operation can be carried out by repairing. Thereby avoiding the blast furnace from generating the wind reducing or damping down operation.
Drawings
Figure 1 is a schematic view of a gun head and an insertion section of the present invention;
FIG. 2 is a schematic view of the present invention in use;
fig. 3 is an enlarged partial schematic view of fig. 2 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1-3, a taphole plugging device in a damaged state of a taphole mud sleeve comprises a gun head 1 and an insertion section 2 connected with the gun head 1, wherein the sections of the gun head 1 and the insertion section are both circular, a stemming filling area 3 is filled in the gun head 1, a stemming filling area 3 is filled in the insertion section 2, stemming is added in the stemming filling area 3 through a hydraulic pressure mud gun, and the insertion section 2 is matched with a mud gun end and a jaw part (not shown in the prior art) of the hydraulic pressure mud gun (not shown in the prior art);
in order to facilitate filling of the plugging member through the space in the gun head 1 in the use state, a further preferred embodiment of the present invention is that a linear space is left in the stemming in the gun head 1, and a plugging member 4 is arranged in the linear space.
In order to facilitate the filling of the closure element 4 in the use position, a further preferred embodiment of the invention provides that the closure element 4 is inserted into the linear space after being filled by means of a hydraulic clay gun.
In order to facilitate filling by setting different stemming area sizes in the using state, the invention further has the preferred embodiment that the straight line space is a circular space which is 100-150mm cut out from the stemming area in the gun head 1.
In order to facilitate the damage compensation of the taphole clay sleeve through the self-performance of the taphole plugging member 4 in the using state, a further preferred embodiment of the invention is that the taphole plugging member 4 is made of high-temperature rubber, and the diameter of the taphole plugging member 4 (shot pad structure) corresponds to the diameter of the taphole clay sleeve 5.
The thickness of the plugging part 4 (gun cushion structure) is matched with the round space of 100-150mm dug out of the gun mud area.
The mouth blocking part 4 is direct with the taphole mud cover 5 contacts, the taphole mud cover 5 is fixed at the outlet end position of the taphole hole channel 6, and the local damaged part of the taphole mud cover 5 is filled.
In order to facilitate the cooperation with the hydraulic clay gun by arranging the gun heads with different sizes in the using state, the further preferable embodiment of the invention is that the outer diameter of the gun head 1 is 250mm, the inner diameter is 150mm, and the thickness of the gun head is 50mm-100mm.
In order to facilitate the matching of the iron notch mud sleeve by arranging the insertion sections with different sizes in the using state, the further preferable embodiment of the invention is that the outer diameter of the insertion section 2 is 148mm, the inner diameter is 130mm, and the length of the insertion section 2 is 50mm, 100mm or 150mm.
In a further preferred embodiment of the invention, the plugging part 4 has fire resistance and flexibility, and can be used for filling the local erosion of the taphole mud sleeve 5 in the plugging process.
A method for blocking an iron notch under the state that an iron notch mud sleeve is damaged comprises the following steps;
filling a stemming filling area with stemming;
secondly, digging out a linear space of 100-150mm from the stemming in the gun head of the clay gun;
thirdly, placing the accident plugging device filled with mud into the scratched gun head space;
and fourthly, plugging operation is carried out, the plugging part directly contacts the iron notch mud sleeve, and due to the ductility of the plugging part, the local damaged part of the iron notch mud sleeve is filled, so that the tight fitting effect is achieved, and the purpose of plugging the iron notch in an accident state is achieved.
The device and the method are used on 7 blast furnaces of a certain steel plant, and the blast furnace is calculated according to the condition that the iron notch is not blocked once every blast furnace is used for one year, and the blowing-down time is calculated for 2 hours every time (the blast furnace air reduction loss is not calculated), so that the yield loss can be reduced by 20000 x 2.00 x 2/24=3333 tons (20000 is the total furnace volume of seven blast furnaces, and 2.00 is the average utilization coefficient of the blast furnaces). Calculated according to the added value of 400 yuan per ton of iron, the loss of 3333 x 400=133 ten thousand yuan can be reduced.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The utility model provides a stifled iron mouthful device under iron mouthful mud cover damaged condition, includes big gun head (1), its characterized in that: the gun head (1) and the cross section of the insertion section are both circular, a stemming filling area (3) is filled in the gun head (1), the stemming filling area (3) is filled in the insertion section (2), stemming is added in the stemming filling area (3) through a hydraulic clay gun, and the insertion section (2) is matched with a clay gun end and a jaw part of the hydraulic clay gun;
a linear space is reserved in stemming in the gun head (1), and a plugging part (4) is arranged in the linear space.
2. The taphole plugging device according to claim 1, wherein: the plugging part (4) is filled into a linear space through a hydraulic clay gun.
3. The taphole plugging device according to claim 2, wherein: the linear space is a circular space with the diameter of 100-150mm dug out in a stemming area in the gun head (1);
the thickness of the plugging part 4 is matched with the round space of 100-150mm extracted from the stemming area.
4. The taphole plugging device according to claim 3, wherein: the mouth plugging part (4) is made of high-temperature rubber, and the diameter of the mouth plugging part (4) corresponds to the diameter of the iron mouth mud sleeve (5).
5. The taphole plugging device for the taphole mud jack in the damaged state according to claim 4, wherein: the sprue gate part (4) is directly contacted with the taphole mud sleeve (5), the taphole mud sleeve (5) is fixed at the outlet end position of the taphole hole channel (6), and the local damaged part of the taphole mud sleeve (5) is filled.
6. The taphole plugging device according to claim 5, wherein: the outer diameter of the gun head (1) is 250mm, the inner diameter of the gun head is 150mm, and the thickness of the gun head is 50mm-100mm.
7. The taphole plugging device according to claim 6, wherein: the outer diameter of the insertion section (2) is 148mm, the inner diameter is 130mm, and the length of the insertion section (2) is 50mm, 100mm or 150mm.
8. The taphole plugging device for the taphole mud jack in the damaged state according to claim 7, wherein: the plugging part (4) has fire resistance and flexibility, and can fill the local erosion of the taphole mud sleeve (5) in the plugging process.
9. The method for plugging the taphole under the state of the damaged taphole mud sleeve according to the claims 1-8, characterized by: comprises the following steps;
filling a stemming filling area with stemming;
secondly, digging out a linear space of 100-150mm from stemming in a gun head of the clay gun;
thirdly, placing the accident plugging device filled with the mud into the scratched gun head space;
and fourthly, performing the plugging operation, wherein the plugging part directly contacts the taphole mud sleeve, and the local damaged part of the taphole mud sleeve is filled due to the ductility of the plugging part, so that the tight fitting effect is achieved, and the purpose of plugging the taphole in an accident state is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211643892.8A CN115747396A (en) | 2022-12-20 | 2022-12-20 | Iron notch blocking device and method under state of iron notch mud sleeve damage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211643892.8A CN115747396A (en) | 2022-12-20 | 2022-12-20 | Iron notch blocking device and method under state of iron notch mud sleeve damage |
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| Publication Number | Publication Date |
|---|---|
| CN115747396A true CN115747396A (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211643892.8A Pending CN115747396A (en) | 2022-12-20 | 2022-12-20 | Iron notch blocking device and method under state of iron notch mud sleeve damage |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001240907A (en) * | 2000-03-02 | 2001-09-04 | Kawasaki Steel Corp | Mud gun |
| CN2672077Y (en) * | 2003-12-25 | 2005-01-19 | 首钢总公司 | Composite gun head of blast furnace clay gun |
| 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 |
| CN203976826U (en) * | 2014-06-26 | 2014-12-03 | 宝山钢铁股份有限公司 | A kind of clay gun protective sleeve |
| CN205443350U (en) * | 2015-12-15 | 2016-08-10 | 内蒙古包钢钢联股份有限公司 | Stifled iron mouthful device of blast furnace hydraulic pressure mud bubble accident situation |
| CN109423531A (en) * | 2017-09-02 | 2019-03-05 | 广东韶钢松山股份有限公司 | A kind of blast furnace taphole exception plugging device and its application method |
| CN218879955U (en) * | 2022-12-20 | 2023-04-18 | 包头钢铁（集团）有限责任公司 | Iron notch blocking device under damaged state of iron notch mud sleeve |
-
2022
- 2022-12-20 CN CN202211643892.8A patent/CN115747396A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001240907A (en) * | 2000-03-02 | 2001-09-04 | Kawasaki Steel Corp | Mud gun |
| CN2672077Y (en) * | 2003-12-25 | 2005-01-19 | 首钢总公司 | Composite gun head of blast furnace clay gun |
| 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 |
| CN203976826U (en) * | 2014-06-26 | 2014-12-03 | 宝山钢铁股份有限公司 | A kind of clay gun protective sleeve |
| CN205443350U (en) * | 2015-12-15 | 2016-08-10 | 内蒙古包钢钢联股份有限公司 | Stifled iron mouthful device of blast furnace hydraulic pressure mud bubble accident situation |
| CN109423531A (en) * | 2017-09-02 | 2019-03-05 | 广东韶钢松山股份有限公司 | A kind of blast furnace taphole exception plugging device and its application method |
| CN218879955U (en) * | 2022-12-20 | 2023-04-18 | 包头钢铁（集团）有限责任公司 | Iron notch blocking device under damaged state of iron notch mud sleeve |
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