CN108690893A - The restorative procedure in blast furnace taphole stream iron duct - Google Patents
The restorative procedure in blast furnace taphole stream iron duct Download PDFInfo
- Publication number
- CN108690893A CN108690893A CN201710236297.5A CN201710236297A CN108690893A CN 108690893 A CN108690893 A CN 108690893A CN 201710236297 A CN201710236297 A CN 201710236297A CN 108690893 A CN108690893 A CN 108690893A
- Authority
- CN
- China
- Prior art keywords
- blast furnace
- hole
- taphole
- furnace taphole
- pipeline
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/14—Discharging devices, e.g. for slag
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Blast Furnaces (AREA)
Abstract
The invention discloses a kind of restorative procedure in blast furnace taphole stream iron duct, this method drills out through-hole on the carbon brick of the stream iron duct position of blast furnace taphole using tapping machine first, which is to be in 7~12 degree of angles with horizontal direction and tilt down;Boring procedure is drilled through using dry method and coring and deashing, drilling depth are 2.5~3 meters in time;Through-hole both sides carry out formwork using steel plate, run through the through-hole drilled out using the pipeline of suitable diameter and both ends are respectively welded on the formwork of through-hole both sides;Gap between pipeline and through-hole carries out closely knit cast using high fluidity, the resistance to material castable of self drainage, so that pipeline forms the stream iron duct of blast furnace taphole.This method thoroughly solve iron mouth tap a blast furnace with deslagging is obstructed, gas leakage, beat mud emit mud, tap a blast furnace splash the problems such as, effectively increase the overhaul efficiency of blast furnace taphole, reduce the cost of overhaul, it is ensured that safe, the normal production of blast furnace.
Description
Technical field
The present invention relates to a kind of restorative procedures in blast furnace taphole stream iron duct.
Background technology
Blast furnace taphole is located at cupola well lower edge, mainly by taphole frame frame, protection board, brick set, mud set, stream iron duct and mud drum group
At working environment is severe, by the erosion of high temperature slag iron and washes away for a long time, and blast furnace taphole region is link most weak in cupola well
One of, the quality of iron mouth work not only influences the normal production of blast furnace, but also can shorten blast furnace service life.
The stream iron duct of especially blast furnace taphole is subjected in blast furnace ironmaking process in stove, outside stove temperature acute variation, it is high
Stove tap a blast furnace before, tap a blast furnace after by external impacts such as tapping machine, clay gun machines, slag iron convection current iron duct refractory material during tapping a blast furnace
It washes away, corrode, therefore flow the weak link that iron duct is blast furnace taphole.
Stream iron duct is damaged seriously in periodically smelting iron operation, often results in slag iron storage capacity increase in stove, coal gas leakage
Gas, beat mud emit mud, tap a blast furnace splash phenomena such as, seriously may occur in which production accident.Realize the complete reparation of stream iron duct damage brick fuel,
Replacement process need to be done in the part for flowing iron duct brick fuel breakage, i.e., remove the carbon brick of tapping hole, then with new brick fuel
It builds by laying bricks or stones.This method is long there are the period, expends that big, labor intensity is big, quantities is big, carbon brick builds difficulty by laying bricks or stones, situation is unknown etc. in stove
Disadvantage, to seriously affect safe, the normal production of blast furnace.
Invention content
Technical problem to be solved by the invention is to provide a kind of restorative procedure in blast furnace taphole stream iron duct, this method is thorough
Bottom solve iron mouth tap a blast furnace with deslagging is obstructed, gas leakage, beat mud emit mud, tap a blast furnace splash the problems such as, effectively increase blast furnace
The overhaul efficiency of iron mouth reduces the cost of overhaul, it is ensured that safe, the normal production of blast furnace.
In order to solve the above technical problems, the restorative procedure in blast furnace taphole stream iron duct of the present invention includes the following steps:
Step 1: drilling out through-hole using tapping machine on the carbon brick of the stream iron duct position of blast furnace taphole, through-hole diameter is according to iron
Mouth size, taphole frame size simultaneously combine the Aperture precision of tapping machine to determine, it is in 7~12 degree of angles that through-hole angle, which is with horizontal direction,
And it tilts down;
Step 2: boring procedure is drilled through using dry method and removes carbon brick core and dust in drilling tool in time, drilling depth is
2.5~3 meters;
Step 3: carrying out formwork in the through-hole both sides of blast furnace taphole, formwork welds rectangular, shape using steel plate on the inside of blast furnace taphole
At special mud drum on the inside of blast furnace taphole, formwork is sealed using steel plate with taphole frame on the outside of blast furnace taphole and welding is vented upwards
Hole, while formwork height is more than the outer iron open height of stove in stove;
Step 4: selecting the suitable pipeline of diameter according to blast furnace iron notch size, pipeline is run through into the through-hole drilled out and both ends
It is respectively welded on the formwork of through-hole both sides;
Step 5: closely knit cast is carried out using the gap of high fluidity, the resistance to material castable of self drainage between pipeline and through-hole,
So that pipeline forms the stream iron duct of blast furnace taphole.
Further, the diameter of the through-hole is 300mm.
Further, it is 1700 × 1000 that the formwork, which uses 6mm steel plates, the rectangular dimension,.
Further, unilateral cast is taken in the cast of the pipeline and via clearance, and castable liquid level is more than through-hole
Highly, to ensure that castable is fully filled with pipeline and via clearance.
Since the restorative procedure in blast furnace taphole stream iron duct of the present invention uses above-mentioned technical proposal, i.e., this method is first in blast furnace
Through-hole is drilled out using tapping machine on the carbon brick of the stream iron duct position of iron mouth, it is in 7~12 degree which, which is with horizontal direction,
It angle and tilts down;Boring procedure is drilled through using dry method and coring and deashing, drilling depth are 2.5~3 meters in time;
Through-hole both sides carry out formwork using steel plate, run through the through-hole drilled out using the pipeline of suitable diameter and both ends are respectively welded in logical
On the formwork of hole both sides;Gap between pipeline and through-hole is carried out closely knit using high fluidity, the resistance to material castable of self drainage
Cast, so that pipeline forms the stream iron duct of blast furnace taphole.This method thoroughly solve iron mouth tap a blast furnace with deslagging it is obstructed,
Gas leakage, beat mud emit mud, tap a blast furnace splash the problems such as, effectively increase the overhaul efficiency of blast furnace taphole, reduce the cost of overhaul, really
Safe, the normal production of blast furnace is protected.
Description of the drawings
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings:
Fig. 1 is the blast furnace taphole stream iron duct schematic diagram using this method reparation.
Specific implementation mode
Embodiment is as shown in Figure 1, the restorative procedure in blast furnace taphole stream iron duct of the present invention includes the following steps:
Step 1: drill out through-hole 2 using tapping machine on the carbon brick 1 of the stream iron duct position of blast furnace taphole, 2 diameter of through-hole according to
Iron mouth size, taphole frame size simultaneously combine the Aperture precision of tapping machine to determine, it is in 7~12 degree that 2 angle of through-hole, which is with horizontal direction,
It angle and tilts down;
Step 2: boring procedure is drilled through using dry method and removes carbon brick core and dust in drilling tool in time, drilling depth is
2.5~3 meters;Usual blast furnace repaiies period without enough baking times in, therefore brick fuel is drilled through and can only be drilled through using dry method, is avoided
Influence of the moisture to blast furnace casting;
Step 3: in 2 both sides of through-hole of blast furnace taphole progress formwork, formwork is welded rectangular using steel plate 3 on the inside of blast furnace taphole,
Special mud drum on the inside of blast furnace taphole is formed, formwork is arranged using steel plate 4 and taphole frame sealing and upwards welding on the outside of blast furnace taphole
Stomata 5, while formwork height is more than the outer iron open height of stove in stove;
Step 4: selecting the suitable pipeline 6 of diameter according to blast furnace iron notch size, pipeline 6 is run through to the through-hole 2 and two drilled out
End is respectively welded on the formwork of 2 both sides of through-hole;The embedded of the pipeline need to be accurately positioned so that opening function is from the pipeline
It squeezes into stove;
Step 5: carrying out closely knit pour using the gap of high fluidity, the resistance to material castable 7 of self drainage between pipeline 6 and through-hole 2
Note, so that pipeline 6 forms the stream iron duct of blast furnace taphole.
Preferably, the diameter of the through-hole 2 is 300mm.
Preferably, it is 1700 × 1000 that the formwork, which uses 6mm steel plates, the rectangular dimension,.
Preferably, unilateral cast is taken in the cast in the pipeline 6 and 2 gap of through-hole, and pours into a mould 71 height of feed liquid surface and be more than
2 height of through-hole, to ensure that castable is fully filled with pipeline and via clearance.
This method is easy to operate, easy for construction, and the stream iron duct of blast furnace is formed by buried pipeline after drilling on carbon brick,
Thoroughly solve blast furnace taphole tap a blast furnace with deslagging is unsmooth, iron mouth string coal gas, beat mud emit mud, tap a blast furnace splash the problems such as, and raising
Remediation efficiency, reduces construction cost.
Claims (4)
1. a kind of restorative procedure in blast furnace taphole stream iron duct, it is characterised in that this method includes the following steps:
Step 1: drilling out through-hole using tapping machine on the carbon brick of the stream iron duct position of blast furnace taphole, through-hole diameter is according to iron
Mouth size, taphole frame size simultaneously combine the Aperture precision of tapping machine to determine, it is in 7~12 degree of angles that through-hole angle, which is with horizontal direction,
And it tilts down;
Step 2: boring procedure is drilled through using dry method and removes carbon brick core and dust in drilling tool in time, drilling depth is
2.5~3 meters;
Step 3: carrying out formwork in the through-hole both sides of blast furnace taphole, formwork welds rectangular, shape using steel plate on the inside of blast furnace taphole
At special mud drum on the inside of blast furnace taphole, formwork is sealed using steel plate with taphole frame on the outside of blast furnace taphole and welding is vented upwards
Hole, while formwork height is more than the outer iron open height of stove in stove;
Step 4: selecting the suitable pipeline of diameter according to blast furnace iron notch size, pipeline is run through into the through-hole drilled out and both ends
It is respectively welded on the formwork of through-hole both sides;
Step 5: closely knit cast is carried out using the gap of high fluidity, the resistance to material castable of self drainage between pipeline and through-hole,
So that pipeline forms the stream iron duct of blast furnace taphole.
2. the restorative procedure in blast furnace taphole stream iron duct according to claim 1, it is characterised in that:The diameter of the through-hole
It is 300mm.
3. the restorative procedure in blast furnace taphole stream iron duct according to claim 1 or 2, it is characterised in that:The formwork is adopted
With 6mm steel plates, the rectangular dimension is 1700 × 1000.
4. the restorative procedure in blast furnace taphole stream iron duct according to claim 3, it is characterised in that:The pipeline and through-hole
Unilateral cast is taken in the cast in gap, and castable liquid level is more than via height, to ensure that castable is fully filled with pipeline
With via clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710236297.5A CN108690893A (en) | 2017-04-12 | 2017-04-12 | The restorative procedure in blast furnace taphole stream iron duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710236297.5A CN108690893A (en) | 2017-04-12 | 2017-04-12 | The restorative procedure in blast furnace taphole stream iron duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108690893A true CN108690893A (en) | 2018-10-23 |
Family
ID=63843854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710236297.5A Pending CN108690893A (en) | 2017-04-12 | 2017-04-12 | The restorative procedure in blast furnace taphole stream iron duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108690893A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195137A (en) * | 2019-05-14 | 2019-09-03 | 鞍钢股份有限公司 | A kind of new masonry iron mouth pore passage preparation method |
| CN110607410A (en) * | 2019-10-16 | 2019-12-24 | 首钢京唐钢铁联合有限责任公司 | Manufacturing method of blast furnace taphole mud sleeve and manufactured mud sleeve |
| CN111216216A (en) * | 2019-11-22 | 2020-06-02 | 安阳钢铁股份有限公司 | Plastic pouring process for blast furnace taphole channel |
| CN112048585A (en) * | 2020-08-07 | 2020-12-08 | 山西太钢不锈钢股份有限公司 | Blast furnace taphole hole opening method |
| CN114111332A (en) * | 2021-11-26 | 2022-03-01 | 攀钢集团攀枝花钢钒有限公司 | Method for improving discharge efficiency of smelting furnace |
| CN116287517A (en) * | 2023-02-24 | 2023-06-23 | 新疆八一钢铁股份有限公司 | High-temperature molten slag iron discharge port for smelting molten iron by using total oxygen of European smelting furnace and slag discharge method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781693A (en) * | 2009-12-24 | 2010-07-21 | 马鞍山钢铁股份有限公司 | Tap hole integral pouring mud sleeve for blast furnace and manufacturing method thereof |
| CN102912051A (en) * | 2012-10-26 | 2013-02-06 | 莱芜钢铁集团有限公司 | Method for exchanging cooling wall of blast furnace taphole online |
| CN205188326U (en) * | 2015-06-29 | 2016-04-27 | 宝钢不锈钢有限公司 | Can prevent iron notch of blast furnace structure of gas leakage |
| CN105838833A (en) * | 2016-05-25 | 2016-08-10 | 河南华西耐火材料有限公司 | Blast furnace bottom and hearth integral seamless casting refractory overhaul and maintenance method |
-
2017
- 2017-04-12 CN CN201710236297.5A patent/CN108690893A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781693A (en) * | 2009-12-24 | 2010-07-21 | 马鞍山钢铁股份有限公司 | Tap hole integral pouring mud sleeve for blast furnace and manufacturing method thereof |
| CN102912051A (en) * | 2012-10-26 | 2013-02-06 | 莱芜钢铁集团有限公司 | Method for exchanging cooling wall of blast furnace taphole online |
| CN205188326U (en) * | 2015-06-29 | 2016-04-27 | 宝钢不锈钢有限公司 | Can prevent iron notch of blast furnace structure of gas leakage |
| CN105838833A (en) * | 2016-05-25 | 2016-08-10 | 河南华西耐火材料有限公司 | Blast furnace bottom and hearth integral seamless casting refractory overhaul and maintenance method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195137A (en) * | 2019-05-14 | 2019-09-03 | 鞍钢股份有限公司 | A kind of new masonry iron mouth pore passage preparation method |
| CN110607410A (en) * | 2019-10-16 | 2019-12-24 | 首钢京唐钢铁联合有限责任公司 | Manufacturing method of blast furnace taphole mud sleeve and manufactured mud sleeve |
| CN110607410B (en) * | 2019-10-16 | 2021-12-21 | 首钢京唐钢铁联合有限责任公司 | Manufacturing method of blast furnace taphole mud sleeve and manufactured mud sleeve |
| CN111216216A (en) * | 2019-11-22 | 2020-06-02 | 安阳钢铁股份有限公司 | Plastic pouring process for blast furnace taphole channel |
| CN112048585A (en) * | 2020-08-07 | 2020-12-08 | 山西太钢不锈钢股份有限公司 | Blast furnace taphole hole opening method |
| CN114111332A (en) * | 2021-11-26 | 2022-03-01 | 攀钢集团攀枝花钢钒有限公司 | Method for improving discharge efficiency of smelting furnace |
| CN114111332B (en) * | 2021-11-26 | 2023-11-21 | 攀钢集团攀枝花钢钒有限公司 | Method for improving smelting furnace discharging efficiency |
| CN116287517A (en) * | 2023-02-24 | 2023-06-23 | 新疆八一钢铁股份有限公司 | High-temperature molten slag iron discharge port for smelting molten iron by using total oxygen of European smelting furnace and slag discharge method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108690893A (en) | The restorative procedure in blast furnace taphole stream iron duct | |
| CN106435073A (en) | Blast furnace liner overall pouring construction method for replacing spraying materials and refractory bricks | |
| CN102399926B (en) | Furnace halt residue iron outlet method for middle and large-sized blast furnaces | |
| CN106282480A (en) | Mammoth conveter furnace lining and building method | |
| CN101250598A (en) | Maintaining method for blast furnace | |
| CN101790587A (en) | Tap hole structure of melting furnace and method of repairing same | |
| CN204939506U (en) | A kind of device stoping blast furnace hearth bottom temp to raise | |
| CN205556724U (en) | A smooth hammer of improved generation for quick replacement blast -furnace tuyere | |
| CN101892337B (en) | Method for maintaining blast furnace taphole | |
| CN101921887B (en) | Maintenance method of blast furnace liner | |
| CN110184412B (en) | Method for replacing bottom blowing brick cup of converter | |
| CN104390468B (en) | A kind of industrial silicon smelting furnace eye restorative procedure | |
| CN107779556A (en) | A kind of RH refining furnace vacuum chambers base channel restorative procedure | |
| CN106702072A (en) | Converter combined blowing method with bottom tuyeres being visible in full furnace campaign | |
| CN105605924A (en) | Repair method of fixed anode copper metallurgical furnace bottom bricks | |
| CN101851692A (en) | Construction method for curing non-aqueous slurry at normal temperature in blast furnace | |
| CN208872112U (en) | A kind of mineral hot furnace dirt-excluding groove new construction | |
| CN110567274B (en) | Digging and repairing method for sidewall of impoverishment furnace | |
| CN206308387U (en) | A kind of RH vacuum chambers bottom masonry construction | |
| CN201436540U (en) | Iron mouth structure of fusion reduction ironmaking furnace | |
| CN105033235A (en) | Smelting steel ladle | |
| CN103512361B (en) | Furnace brick patching method of oxygen enrichment top-blown copper metallurgical furnace | |
| CN218666122U (en) | Novel slag-iron separation structure for blast furnace | |
| CN115627319A (en) | Method for quickly replacing tubular bricks of steel tapping hole of converter | |
| CN220393785U (en) | Novel precast block of blast furnace main channel skimming device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181023 |
|
| RJ01 | Rejection of invention patent application after publication |