CN107779556A - A kind of RH refining furnace vacuum chambers base channel restorative procedure - Google Patents
A kind of RH refining furnace vacuum chambers base channel restorative procedure Download PDFInfo
- Publication number
- CN107779556A CN107779556A CN201610785897.2A CN201610785897A CN107779556A CN 107779556 A CN107779556 A CN 107779556A CN 201610785897 A CN201610785897 A CN 201610785897A CN 107779556 A CN107779556 A CN 107779556A
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- CN
- China
- Prior art keywords
- brick
- circulating pipe
- magnesite
- chrome
- stones
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The present invention relates to a kind of RH refining furnace vacuum chambers base channel restorative procedure, including：1) base channel working lining magnesite-chrome brick part and circulating pipe brick are removed；2) circulating pipe is installed；3) circulating pipe brick is poured into a mould closely knit from below bottom land permanent layer with corundum castable, more than bottom land permanent layer closely knit with ramming mass ramming；4) bottom land and circulating pipe brick occur levelling before operation during drop；5) restorative build by laying bricks or stones finally is carried out to the working lining magnesite-chrome brick of dismounting.The present invention only needs digging partial duty layer magnesite-chrome brick to complete circulating pipe replacing, reaches the purpose for repairing RH base channels, can improve the service life of RH base channels, shortens vacuum chamber turn around time, reduces resistance to material usage amount, reduces production cost.
Description
Technical field
The present invention relates to steelmaking technical field, more particularly to a kind of RH refining furnace vacuum chambers base channel restorative procedure.
Background technology
RH application of vacuum is a kind of multi-functional double refining method that can effectively improve steel quality.RH vacuum chambers are by bottom
Groove, intermediate channel and hot top cover composition, the refractory material of base channel include insertion tube, circulating pipe, castable and magnesite-chrome brick.It is actual raw
In production the refractory material of base channel bear rapid heat cycle, strong impact force, high vacuum condition and various basicity slags, alloying component it is strong
Strong chemical action, wash away, corrode, peel off than more serious, therefore the service life of vacuum chamber base channel determines making for vacuum chamber
Use the life-span.The insertion tube of RH base channels after 100 times using changing, and circulating pipe Long Term Contact molten steel, is washed away, the melting loss time
Most long, erosion seriously can not but be changed online；RH vacuum chambers offline must retool, change the overall magnesite-chrome brick of base channel or
Repaired using castable, cause vacuum chamber turn around time to grow, resistance to material usage amount is big, and production cost is high.
The content of the invention
The invention provides a kind of RH refining furnace vacuum chambers base channel restorative procedure, only needs digging partial duty layer magnesite-chrome brick
Circulating pipe replacing can be completed, reaches the purpose for repairing RH base channels, the service life of RH base channels can be improved, shortens vacuum chamber
Turn around time, resistance to material usage amount is reduced, reduce production cost.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of RH refining furnace vacuum chambers base channel restorative procedure, comprises the following steps：
1) base channel working lining magnesite-chrome brick part and circulating pipe brick are removed using pneumatic pick, the work of circulating pipe both sides
The ring of layer magnesite-chrome brick foot one radially removes 7~10 pieces of bricks；Remove, radially removed less per a upward ring successively then up
1 piece of brick, until the brick number that should be removed is zero；Circulating pipe brick is removed to castable position around circulating pipe；
2) circulating pipe is installed, circulating pipe brick is successively built by laying bricks or stones on the outside of insertion tube from bottom to top；
3) circulating pipe brick is poured into a mould closely knit from below bottom land permanent layer with corundum castable, more than bottom land permanent layer uses ramming mass
Ramming is closely knit；
4) bottom land and circulating pipe brick occur levelling before operation during drop, and dislocation is levelling less than 30mm use castable, mistake
It is levelling that position is more than 30mm magnesite-chrome bricks；Circulating pipe brick fills gap around circulating pipe sternly after all installing using castable；
5) finally the working lining magnesite-chrome brick of dismounting is carried out it is restorative build by laying bricks or stones, each ring is successively according to being removed from bottom to top
Brick number is built by laying bricks or stones, and one piece of brick of topmost is installed after cutting processing according to building the actual size in space more than rear institute by laying bricks or stones again, guarantee
The compactness of connection, working lining magnesite-chrome brick brickwork joint build gap by laying bricks or stones and are less than 1mm.
Compared with prior art, the beneficial effects of the invention are as follows：
Only need digging partial duty layer magnesite-chrome brick to complete circulating pipe replacing, reach the purpose for repairing RH base channels, can
The service life of RH base channels is improved, shortens vacuum chamber turn around time, reduces resistance to material usage amount, reduces production cost.
Brief description of the drawings
Fig. 1 is the facade view of RH refining furnace vacuum chambers base channel of the present invention.
In figure：1. the circulating pipe of 4. working lining magnesite-chrome brick of calcium silicate board with microporous 2. high-alumina lightening brick, 3. magnesite-chrome brick 5.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings：
As shown in figure 1, RH refining furnace vacuum chambers base channel is by calcium silicate board with microporous 1, high-alumina lightening brick 2, magnesite-chrome brick 3, working lining magnesium
Chrome brick 4 and circulating pipe 5 form, and a kind of RH refining furnace vacuum chambers base channel restorative procedure of the present invention, pertain only to working lining magnesium
Chrome brick 4 and circulating pipe 5, repair process comprises the following steps：
1) part of base channel working lining magnesite-chrome brick 4 and circulating pipe brick are removed using pneumatic pick, the both sides work of circulating pipe 5
Make the ring of 4 foot of layer magnesite-chrome brick one and radially remove 7~10 pieces of bricks；Remove successively then up, it is radially few per a upward ring
1 piece of brick is removed, until the brick number that should be removed is zero；Circulating pipe brick is removed and arrives the surrounding castable position of circulating pipe 5；
2) circulating pipe 5 is installed, circulating pipe brick is successively built by laying bricks or stones on the outside of insertion tube from bottom to top；
3) circulating pipe brick is poured into a mould closely knit from below bottom land permanent layer with corundum castable, more than bottom land permanent layer uses ramming mass
Ramming is closely knit；
4) bottom land and circulating pipe brick occur levelling before operation during drop, and dislocation is levelling less than 30mm use castable, mistake
It is levelling that position is more than 30mm magnesite-chrome bricks；Circulating pipe brick fills gap around circulating pipe sternly after all installing using castable；
5) finally the working lining magnesite-chrome brick 4 of dismounting is carried out it is restorative build by laying bricks or stones, each ring is successively according to being removed from bottom to top
Brick number built by laying bricks or stones, one piece of brick of topmost is installed after cutting processing according to building the actual size in space more than rear institute by laying bricks or stones again, guarantor
The compactness of connection is demonstrate,proved, the brickwork joint of working lining magnesite-chrome brick 4 builds gap by laying bricks or stones and is less than 1mm.
A kind of principle of RH refining furnace vacuum chambers base channel restorative procedure of the present invention is under RH vacuum chamber insertion tubes
During line, the circulating pipe of erosion, and the circulating pipe that more transducer set is new are removed；Because the working lining magnesite-chrome brick of base channel other positions is residual
Remaining thickness meets production requirement, can be continuing with, and so as to reduce workload, shortens vacuum chamber and reorganizes and outfit the time, reduce
Resistance to material usage amount, reduces production cost.
A kind of action of RH refining furnace vacuum chambers base channel restorative procedure of the present invention includes repairing condition really
Recognize, the inspection after the reparation and reparation of circulating pipe, the reparation of wherein circulating pipe includes：Before digging the defects of region each to circulating pipe
Detected, the working lining magnesite-chrome brick of circulating pipe is close in digging circulating pipe, digging, the block again of circulating pipe and working lining magnesite-chrome brick
Build, build by laying bricks or stones the inspection of rear circulating pipe.
By using RH refining furnace vacuum chambers base channel restorative procedure of the present invention, base channel access times are by 240 times
Reach 320 times, vacuum chamber reorganizes and outfit time shortening 2 days, and resistance to material cost reduces by 1.3 yuan/t.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (1)
1. a kind of RH refining furnace vacuum chambers base channel restorative procedure, it is characterised in that comprise the following steps：
1) base channel working lining magnesite-chrome brick part and circulating pipe brick are removed using pneumatic pick, circulating pipe both sides working lining magnesium
The ring of chrome brick foot one radially removes 7~10 pieces of bricks；Remove successively then up, radially remove 1 piece less per a upward ring
Brick, until the brick number that should be removed is zero；Circulating pipe brick is removed to castable position around circulating pipe；
2) circulating pipe is installed, circulating pipe brick is successively built by laying bricks or stones on the outside of insertion tube from bottom to top；
3) circulating pipe brick is poured into a mould closely knit from below bottom land permanent layer with corundum castable, more than bottom land permanent layer uses ramming mass ramming
It is closely knit；
4) bottom land and circulating pipe brick occur levelling before operation during drop, and dislocation is levelling less than 30mm use castable, and dislocation is greatly
It is levelling in 30mm magnesite-chrome bricks；Circulating pipe brick fills gap around circulating pipe sternly after all installing using castable；
5) finally the working lining magnesite-chrome brick of dismounting is carried out it is restorative build by laying bricks or stones, each ring is successively according to the brick number removed from bottom to top
Built by laying bricks or stones, one piece of brick of topmost is installed after cutting processing according to building the actual size in space more than rear institute by laying bricks or stones again, ensures to connect
Compactness, working lining magnesite-chrome brick brickwork joint builds gap by laying bricks or stones and is less than 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610785897.2A CN107779556A (en) | 2016-08-31 | 2016-08-31 | A kind of RH refining furnace vacuum chambers base channel restorative procedure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610785897.2A CN107779556A (en) | 2016-08-31 | 2016-08-31 | A kind of RH refining furnace vacuum chambers base channel restorative procedure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107779556A true CN107779556A (en) | 2018-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610785897.2A Pending CN107779556A (en) | 2016-08-31 | 2016-08-31 | A kind of RH refining furnace vacuum chambers base channel restorative procedure |
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| CN (1) | CN107779556A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109837362A (en) * | 2019-04-01 | 2019-06-04 | 山东钢铁集团日照有限公司 | A method of effectively slowing down the deformation of RH vacuum tank groove body |
| CN110106315A (en) * | 2019-04-01 | 2019-08-09 | 山东钢铁集团日照有限公司 | A kind of method of the control of RH vacuum tank long-life |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962892A (en) * | 2005-11-10 | 2007-05-16 | 上海宝钢冶金建设公司 | PH vacuum tank circulation pipe repairing method |
| CN102297594A (en) * | 2011-07-19 | 2011-12-28 | 河北钢铁股份有限公司唐山分公司 | Masonry method of RH refining furnace capable of reducing consumption of refractory materials |
| CN102954693A (en) * | 2011-08-20 | 2013-03-06 | 鞍钢股份有限公司 | Method for constructing bottom groove circulating pipe of vacuum-circulating degassing furnace |
| CN105087872A (en) * | 2014-05-22 | 2015-11-25 | 中钢集团耐火材料有限公司 | Repairing method of RH refining furnace vacuum chamber tank bottom and circulation pipe |
| JP2015229800A (en) * | 2014-06-09 | 2015-12-21 | Ｊｆｅスチール株式会社 | Brick structure of reflux pipe and immersion pipe of rh vacuum degasser |
-
2016
- 2016-08-31 CN CN201610785897.2A patent/CN107779556A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962892A (en) * | 2005-11-10 | 2007-05-16 | 上海宝钢冶金建设公司 | PH vacuum tank circulation pipe repairing method |
| CN102297594A (en) * | 2011-07-19 | 2011-12-28 | 河北钢铁股份有限公司唐山分公司 | Masonry method of RH refining furnace capable of reducing consumption of refractory materials |
| CN102954693A (en) * | 2011-08-20 | 2013-03-06 | 鞍钢股份有限公司 | Method for constructing bottom groove circulating pipe of vacuum-circulating degassing furnace |
| CN105087872A (en) * | 2014-05-22 | 2015-11-25 | 中钢集团耐火材料有限公司 | Repairing method of RH refining furnace vacuum chamber tank bottom and circulation pipe |
| JP2015229800A (en) * | 2014-06-09 | 2015-12-21 | Ｊｆｅスチール株式会社 | Brick structure of reflux pipe and immersion pipe of rh vacuum degasser |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109837362A (en) * | 2019-04-01 | 2019-06-04 | 山东钢铁集团日照有限公司 | A method of effectively slowing down the deformation of RH vacuum tank groove body |
| CN110106315A (en) * | 2019-04-01 | 2019-08-09 | 山东钢铁集团日照有限公司 | A kind of method of the control of RH vacuum tank long-life |
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| PB01 | Publication | ||
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Application publication date: 20180309 |