CN104673966A - Method for rapidly maintaining converter lining - Google Patents
Method for rapidly maintaining converter lining Download PDFInfo
- Publication number
- CN104673966A CN104673966A CN201510032146.9A CN201510032146A CN104673966A CN 104673966 A CN104673966 A CN 104673966A CN 201510032146 A CN201510032146 A CN 201510032146A CN 104673966 A CN104673966 A CN 104673966A
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- Prior art keywords
- converter
- slag
- refractory brick
- carbon refractory
- converter lining
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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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Abstract
The invention discloses a method for rapidly maintaining a converter lining. The method comprises the following steps of: remaining slag after tapping of converter, pouring magnesia-carbon refractory brick blocks in the converter, shaking the converter till the magnesia-carbon refractory brick blocks and remained slag in the converter are flatly spread at a repaired part of the converter lining, and standing so that the mixture of the magnesia-carbon refractory brick blocks and the remained slag are stuck to the repaired part of the converter lining. According to the method disclosed by the invention, the converter repairing time is effectively shortened; the disadvantage that the time for pouring materials to repair the converter and sintering is long is changed; the operability of the converter is increased; high-temperature converter slag is easy to burn thoroughly; furthermore, a part of clearances can be filled by the molten part of converter repairing bricks; the erosion resistance and the scouring resistance are increased; the material collapse phenomenon due to non-thorough burning and half-baking of a part of positions in the event of traditionally repairing can be effectively avoided; the labour safety coefficient of workers is increased; a part of converter repairing materials and the labour cost are saved; the converter repairing cost is effectively reduced; compared with the original depletion speed, the depletion speed of the converter lining after the method is implemented is reduced; and therefore, the method has the characteristics of being rapid in maintenance speed, high in efficiency and safety and low in cost.
Description
Technical field
The present invention relates to a kind of maintaining converter method, especially a kind of Rapid Maintenance Method of converter lining.
Background technology
In converter steelmaking is produced, improve the work-ing life of furnace lining, have important meaning to raising converter producing rate, molten steel output, steel quality and reduction refractory consumption rate, increase economic benefit.
In convertor steelmaking process, because furnace lining is in the feature of the mechanical erosion of reinforced process and the erosion of high temperature furnace slag, the different sites of furnace lining can be made to be subject to damage in various degree thus make lining thickness thinning, when being thinned to a certain degree, converter just blowing out must change whole backup lining brick.In order to make the utilization ratio of whole furnace lining and converter operating rate reach the highest, must safeguard furnace lining broken parts in time.When operation mended by daily enforcement material, pour in stove, then material is blown even with oxygen supply by lance in stove after evacuation slag with overhead traveling crane by mending material, sintering time requires longer, generally can not lower than 45 minutes.The filling time long fast and stable for converter is produced certain restriction; And implement material the low anti-erosion of added time mending material density and erosion poor, converter lining life cycle can be caused short, and mending material erosive velocity is very fast.Therefore improve fettling efficiency, under the prerequisite ensureing fettling quality, shorten the filling time is necessary.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of Rapid Maintenance Method of high-quality converter lining.
For solving the problems of the technologies described above, the technical solution used in the present invention is: it is after converter tapping, carry out remaining slag operation, magnesium carbon refractory brick blocks is poured in stove, shake converter is laid in the repairing position of converter lining to the slag that stays in magnesium carbon refractory brick blocks and stove, leaves standstill and makes magnesium carbon refractory brick blocks and stay the compound of slag to be bonded in the repairing position of furnace lining.
The basicity of slag of staying of the present invention is 3.0 ~ 4.0, and content of magnesia is 11wt% ~ 14wt%.The temperature of described converter tapping control 1650 DEG C and more than.
The granularity of magnesium carbon refractory brick blocks of the present invention is 50 ~ 200mm.The magnesium carbon waste material of the main raw material of described magnesium carbon refractory brick blocks to be the magnesite clinker of content of MgO > 92.21wt% and content of MgO be 70wt% ~ 90wt%, with the modified asphalt powder of powdery for flowing agent.
The quantity of slag of staying in stove of the present invention is 2% ~ 4% ton of BOF nominal capacity.
The add-on of magnesium carbon refractory brick blocks of the present invention is: the impaired area < 0.5m of described converter lining
2time, add-on is 0 ~ 0.5 ton; 0.5m
2the impaired area < 1.0m of≤converter lining
2time, add-on is 0.5 ~ 1.0 ton; 1.0m
2the impaired area < 1.5m of≤converter lining
2time, add-on is 1.0 ~ 2 tons; Converter lining>=1.5m
2during impaired area, with the add-on of 1.0 ~ 1.5 tons for radix, add repairing in batches.
Time of repose of the present invention is 5 ~ 15 minutes.
The slag that stays in stove of the present invention has higher heat, and magnesium carbon refractory brick forms primarily of electrosmelted magnesite clinker, oil-containing magnesium carbon waste material and pitch, under high temperature action, pitch can form certain carbon in conjunction with skeleton and reticulated structure by carbonizing greying, magnesia particle is fixed in the structure of carbon combination, accelerate the softening of magnesium carbon refractory brick and sintering, improve sintering strength.High temperature stays slag to have good mobility, after mixing, the gap between magnesium carbon refractory brick can be filled up with magnesium carbon refractory brick, is not easy to form cavity when laying magnesium carbon refractory brick, can play the effect improving and repair position erosion resistance.
In the present invention, when staying the basicity of slag between 3.0 ~ 4.0, the C in finishing slag
2s and C
3s sum can reach 70% ~ 75%, and this compound is all high-melting-point substances, has higher refractoriness; In addition, under this basicity condition, the solidification value of eutectic thing is 1856 DEG C, has higher erosion resistance.To stay in slag content of MgO 11wt% and above time, in slag, MgO can form dystectic sosoloid with FeO, but considers from the metallurgical performance of slag, and in slag, MgO is when more than 15wt%, and sosoloid fusing point is too high, being unfavorable for slag and dephosphorization; Therefore slag content of MgO effectively can promote the formation of high-melting-point sosoloid in the interval of 11wt% ~ 14wt%, thus improves the erosion resistance of slag.
The beneficial effect adopting technique scheme to produce is: the present invention is directed to existing fettling and innovate and improve, utilize the binding property of residue converter slag and magnesium carbon refractory brick, magnesium carbon refractory brick blocks is directly poured in stove, control converter inclining angle, magnesium carbon refractory brick is attached to and damages furnace lining position, be applicable to repair large face of converter, furnace bottom position.Described magnesium carbon refractory brick can be fired and form, and also can be broken into even fritter with normal size magnesium carbon refractory brick, have easy feature of drawing materials.
The present invention shortens the filling time effectively, saves time than traditional method, improves converter operating rate; High temperature furnace slag is easily grilled thoroughly, and fettling brick melt part can filling part space, increase its resistance to fouling and erosion, effectively avoiding the tradition material added time burns saturating, and the half-cooked generation of portion is collapsed the phenomenon of material, enhances the safety coefficient of workman's work; Save part mending material and labour cost, significantly reduce the cost of fettling; And damaged part mend refractory brick spending rate comparatively originally greatly slowed down.Therefore, the present invention has that maintenance speed is fast, efficiency is high, security is high and the feature that cost is low.
Embodiment
Below in conjunction with specific embodiment, the present invention is further detailed explanation.
The Rapid Maintenance Method of this converter lining is directly poured in stove by small grain size magnesium carbon refractory brick (magnesium carbon refractory brick blocks), the heat of converter high temperature furnace slag is utilized to form compound together with magnesium carbon refractory brick Fast Sintering, by controlling converter inclining angle, compound is laid in damaged part, it is repaired.This Rapid Maintenance Method concrete operation method as follows:
1, the granularity of magnesium carbon refractory brick blocks is 50 ~ 100mm, and profile can be rectangle, circle, also can be irregular Polygons, can fire and form, and also the magnesium carbon refractory brick of existing specification can be broken into even fritter and form.Magnesium carbon refractory brick consumption is repaired position size according to converter and is got the raw materials ready, and table 1 is brick using amount when repairing different impaired area:
Table 1: the add-on of magnesium carbon refractory brick blocks
Converter lining>=1.5m in table 1
2the multiple batches of maintenance of impaired area time-division, refers to the add-on of 1.0 ~ 1.5 tons for radix, and the magnesium carbon refractory brick blocks at every turn adding radix amount is repaired, and no longer adds until repair completely.
2, magnesium carbon refractory brick adopts conventional magnesium carbon refractory brick, by W(MgO) magnesite clinker of > 92.21% and W(MgO) 70% ~ 90% magnesium carbon waste material be main raw material, with powdered modified asphalt powder for flowing agent.
When 3, planning fettling, the basicity of slag need be controlled 3.0 ~ 4.0, content of MgO at 11 ~ 14wt%, tapping temperature control 1650 DEG C and more than, and to implement in 10 minutes after tapping terminates, to ensure cohesiveness and the sintering temperature of slag.
When 4, planning fettling, molten steel need go out only by converter tapping operation, can pour out a part of slag according to the slag quantity of slag after tapping, be 2% ~ 4% ton (2% ~ 4% of nominal ton, nominal ton refers to the design tons gross of converter volume) of BOF nominal capacity by the quantity of slag of staying in stove; If there is residue molten steel can slag tap from tap hole to slag ladle after tapping, residue molten steel is gone out only.
5, after in stove, the quantity of slag adjusts, converter is shaken to charging side, the magnesium carbon refractory brick got ready in steel scrap bucket is poured in stove, need to repair position according to furnace lining and slowly shake converter, front and back perseveration, until by magnesium carbon refractory brick with stay the compound of slag to be laid in repair position, the sintering time of standing 5 ~ 15 minutes; Iron can be filled resume production after slag all solidifies.
Embodiment 1: the concrete steps of this Rapid Maintenance Method are as described below.
Repairing converter charging side area is 1m
2breakage.When smelting last stove before plan fettling, basicity of slag is 3.7, and content of MgO is 11.21wt%, and blow end point temperature is 1665 DEG C, pours out part slag after tapping from tap hole position, stays the quantity of slag to be about 2 tons (2% of nominal ton), checks in stove without surplus steel; Shaken by converter mouth to charging side, add 1 ton, previously prepd magnesium carbon refractory brick in stove, choice for use low speed controls converter inclining, slowly converter is shaken, approximately shake to 55 degree of positions, perseveration 2 times before and after among a small circle, observe magnesium carbon refractory brick in stove and pave rear stopping tilting converter.Leave standstill 10 minutes in this case, check fettling effect, the mixture of magnesium carbon refractory brick and slag is better at charging side maintenance place sticking effect, has not had molten slag to reach and has safeguarded that furnace lining effect is resumed production.
Embodiment 2: the concrete steps of this Rapid Maintenance Method are as described below.
Repairing Converter prodelta clay is 1m
2breakage.When smelting last stove before plan fettling, basicity of slag is 3.9, and content of MgO is 12.61wt%, and blow end point temperature is 1671 DEG C, pours out part slag after tapping from tap hole position, stays the quantity of slag to be about 4 tons (4% of nominal ton), checks in stove without surplus steel; Shaken by converter mouth to charging side, add 1 ton, previously prepd magnesium carbon refractory brick in stove, choice for use low speed controls converter inclining, slowly converter is shaken, approximately shake to 0 degree of position, perseveration 3 times before and after among a small circle, observe magnesium carbon refractory brick in stove and pave rear stopping tilting converter.Leave standstill 10 minutes in this case, check fettling effect, the mixture of magnesium carbon refractory brick and slag is better at patching place sticking effect, has not had molten slag to reach and has safeguarded that furnace lining effect is resumed production.
This Rapid Maintenance Method and traditional method is used to be 1m to furnace lining large area
2breakage is repaired, and comparing result is as described below:
1, cost consumption: this Rapid Maintenance Method and the contrast of traditional fettling method cost are in table 2.
Table 2: cost contrasts
Found by contrast: save 1 ton totally 1800 yuan/time, magnesium carbon refractory brick; Present method utilizes the former slag of steel-making to replace original spray repair sintered material, can reduce expenses 1400 yuan/time; Save 5 people labor forces and be engaged in this work, save labour cost 229 yuan/time, amount to cost-saving expense 3461 yuan/time.
2, working efficiency: single maintenance time foreshortened to 20 minutes by original 45 minutes, single saves the fettling activity duration 55.5%.
3, fettling material consumption speed: present method utilizes the feature of residue warm sludge heat height and good fluidity and refractory brick to sinter, under high temperature action, refractory brick is softening is bonded on furnace lining, and not easily form cavity, solve in original sintering process loosely organized, the defect of resistance to fouling and erosion difference, the spending rate of furnace lining mending material reduced comparatively originally greatly.Present method is safeguarded and is repaired large face 1m
2after breakage, the spending rate at this position is 11.9%, needs again to safeguard after namely 1 ton of fettling brick uses 2 days; Same breakage, after traditional method is safeguarded and repaired large face, the spending rate at this position is 47.62%, and namely 2 tons of fettling bricks, 1 ton of mending material need again to safeguard after using 1 day.
Claims (8)
1. the Rapid Maintenance Method of a converter lining, it is characterized in that: it is after converter tapping, carry out remaining slag operation, magnesium carbon refractory brick blocks is poured in stove, shake converter is laid in the repairing position of converter lining to the slag that stays in magnesium carbon refractory brick blocks and stove, leaves standstill and makes magnesium carbon refractory brick blocks and stay the compound of slag to be bonded in the repairing position of furnace lining.
2. the Rapid Maintenance Method of converter lining according to claim 1, is characterized in that: described in stay the basicity of slag to be 3.0 ~ 4.0, content of magnesia is 11wt% ~ 14wt%.
3. the Rapid Maintenance Method of converter lining according to claim 2, is characterized in that: the temperature of described converter tapping control 1650 DEG C and more than.
4. the Rapid Maintenance Method of converter lining according to claim 1, is characterized in that: the granularity of described magnesium carbon refractory brick blocks is 50 ~ 200mm.
5. the Rapid Maintenance Method of converter lining according to claim 4, it is characterized in that: the magnesium carbon waste material of the main raw material of described magnesium carbon refractory brick blocks to be the magnesite clinker of content of MgO > 92.21wt% and content of MgO be 70wt% ~ 90wt%, with the modified asphalt powder of powdery for flowing agent.
6. the Rapid Maintenance Method of converter lining according to claim 1, is characterized in that: the quantity of slag of staying in described stove is 2% ~ 4% ton of BOF nominal capacity.
7. the Rapid Maintenance Method of converter lining according to claim 1, is characterized in that, the add-on of described magnesium carbon refractory brick blocks is: the impaired area < 0.5m of described converter lining
2time, add-on is 0 ~ 0.5 ton; 0.5m
2the impaired area < 1.0m of≤converter lining
2time, add-on is 0.5 ~ 1.0 ton; 1.0m
2the impaired area < 1.5m of≤converter lining
2time, add-on is 1.0 ~ 2 tons; Converter lining>=1.5m
2during impaired area, with the add-on of 1.0 ~ 1.5 tons for radix, add repairing in batches.
8. the Rapid Maintenance Method of the converter lining according to claim 1-7 any one, is characterized in that: described time of repose is 5 ~ 15 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510032146.9A CN104673966A (en) | 2015-01-22 | 2015-01-22 | Method for rapidly maintaining converter lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510032146.9A CN104673966A (en) | 2015-01-22 | 2015-01-22 | Method for rapidly maintaining converter lining |
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| CN104673966A true CN104673966A (en) | 2015-06-03 |
Family
ID=53309548
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| CN201510032146.9A Pending CN104673966A (en) | 2015-01-22 | 2015-01-22 | Method for rapidly maintaining converter lining |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105087849A (en) * | 2015-08-28 | 2015-11-25 | 东北大学 | Method for repairing converter lining |
| CN105801136A (en) * | 2016-02-04 | 2016-07-27 | 北京利尔高温材料股份有限公司 | Converter repairing mass and preparation method thereof |
| CN106191370A (en) * | 2016-08-12 | 2016-12-07 | 唐山市德龙钢铁有限公司 | A kind of maintaining method of converter lining |
| CN106350634A (en) * | 2016-09-20 | 2017-01-25 | 河钢股份有限公司承德分公司 | Method for quickly repairing furnace lining of vanadium extracting converter |
| CN106702077A (en) * | 2016-11-18 | 2017-05-24 | 南京钢铁股份有限公司 | Converter protecting method for ensuring long service life of converter |
| CN107557521A (en) * | 2017-09-26 | 2018-01-09 | 宣化钢铁集团有限责任公司 | A kind of slag compensating method for improving converter bottom thickness |
| CN108396099A (en) * | 2018-04-19 | 2018-08-14 | 天津钢铁集团有限公司 | A kind of method of Rapid-Repair converter lining |
| CN109055655A (en) * | 2018-10-10 | 2018-12-21 | 安溪起星晟汇机械科技有限公司 | A kind of different layer material-saving repair apparatus of the knick point of mammoth conveter furnace lining |
| CN109593909A (en) * | 2019-01-15 | 2019-04-09 | 华北理工大学 | The method that converter is repaired using waste magnesia carbon bricks |
| CN110042196A (en) * | 2019-03-20 | 2019-07-23 | 南京钢铁股份有限公司 | A kind of resistance to material furnace retaining method of coverter pig sizing |
| CN110042197A (en) * | 2019-04-28 | 2019-07-23 | 阳春新钢铁有限责任公司 | A method of utilizing waste magnesia carbon bricks fettling |
| CN111792920A (en) * | 2020-06-20 | 2020-10-20 | 鞍山赛诺新材料有限公司 | Novel environment-friendly converter quick repairing material |
| CN114737015A (en) * | 2022-04-13 | 2022-07-12 | 南京钢铁股份有限公司 | Novel furnace repairing method |
| CN114959165A (en) * | 2022-05-18 | 2022-08-30 | 玉溪新兴钢铁有限公司 | Converter steelmaking furnace protecting method |
| CN115478125A (en) * | 2022-10-13 | 2022-12-16 | 山东钢铁股份有限公司 | Rapid fettling method for converter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58117816A (en) * | 1981-12-29 | 1983-07-13 | Nippon Steel Corp | Hot repairing method for converter |
| US4421554A (en) * | 1980-10-29 | 1983-12-20 | Stahlwerke Peine-Salzgitter Ag | Production of steel in a basic converter employing liquid converter slag |
| JPS59222517A (en) * | 1983-06-01 | 1984-12-14 | Nippon Steel Corp | Repairing method of converter |
| JP2002069524A (en) * | 2000-09-06 | 2002-03-08 | Kobe Steel Ltd | Method for hot-repairing refractory in converter |
| CN102719603A (en) * | 2011-03-30 | 2012-10-10 | 鞍钢股份有限公司 | Slag-groveling-type fettling method |
| JP2013082953A (en) * | 2011-10-06 | 2013-05-09 | Nippon Steel & Sumitomo Metal Corp | Method of extending life of converter refractory |
-
2015
- 2015-01-22 CN CN201510032146.9A patent/CN104673966A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4421554A (en) * | 1980-10-29 | 1983-12-20 | Stahlwerke Peine-Salzgitter Ag | Production of steel in a basic converter employing liquid converter slag |
| JPS58117816A (en) * | 1981-12-29 | 1983-07-13 | Nippon Steel Corp | Hot repairing method for converter |
| JPS59222517A (en) * | 1983-06-01 | 1984-12-14 | Nippon Steel Corp | Repairing method of converter |
| JP2002069524A (en) * | 2000-09-06 | 2002-03-08 | Kobe Steel Ltd | Method for hot-repairing refractory in converter |
| CN102719603A (en) * | 2011-03-30 | 2012-10-10 | 鞍钢股份有限公司 | Slag-groveling-type fettling method |
| JP2013082953A (en) * | 2011-10-06 | 2013-05-09 | Nippon Steel & Sumitomo Metal Corp | Method of extending life of converter refractory |
Non-Patent Citations (1)
| Title |
|---|
| 郑金星 等: "《炼钢工艺及设备》", 31 July 2012, 冶金工业出版社 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105087849A (en) * | 2015-08-28 | 2015-11-25 | 东北大学 | Method for repairing converter lining |
| CN105801136A (en) * | 2016-02-04 | 2016-07-27 | 北京利尔高温材料股份有限公司 | Converter repairing mass and preparation method thereof |
| CN106191370A (en) * | 2016-08-12 | 2016-12-07 | 唐山市德龙钢铁有限公司 | A kind of maintaining method of converter lining |
| CN106350634A (en) * | 2016-09-20 | 2017-01-25 | 河钢股份有限公司承德分公司 | Method for quickly repairing furnace lining of vanadium extracting converter |
| CN106702077A (en) * | 2016-11-18 | 2017-05-24 | 南京钢铁股份有限公司 | Converter protecting method for ensuring long service life of converter |
| CN107557521A (en) * | 2017-09-26 | 2018-01-09 | 宣化钢铁集团有限责任公司 | A kind of slag compensating method for improving converter bottom thickness |
| CN108396099A (en) * | 2018-04-19 | 2018-08-14 | 天津钢铁集团有限公司 | A kind of method of Rapid-Repair converter lining |
| CN109055655A (en) * | 2018-10-10 | 2018-12-21 | 安溪起星晟汇机械科技有限公司 | A kind of different layer material-saving repair apparatus of the knick point of mammoth conveter furnace lining |
| CN109593909A (en) * | 2019-01-15 | 2019-04-09 | 华北理工大学 | The method that converter is repaired using waste magnesia carbon bricks |
| CN110042196A (en) * | 2019-03-20 | 2019-07-23 | 南京钢铁股份有限公司 | A kind of resistance to material furnace retaining method of coverter pig sizing |
| CN110042197A (en) * | 2019-04-28 | 2019-07-23 | 阳春新钢铁有限责任公司 | A method of utilizing waste magnesia carbon bricks fettling |
| CN111792920A (en) * | 2020-06-20 | 2020-10-20 | 鞍山赛诺新材料有限公司 | Novel environment-friendly converter quick repairing material |
| CN114737015A (en) * | 2022-04-13 | 2022-07-12 | 南京钢铁股份有限公司 | Novel furnace repairing method |
| CN114959165A (en) * | 2022-05-18 | 2022-08-30 | 玉溪新兴钢铁有限公司 | Converter steelmaking furnace protecting method |
| CN115478125A (en) * | 2022-10-13 | 2022-12-16 | 山东钢铁股份有限公司 | Rapid fettling method for converter |
| CN115478125B (en) * | 2022-10-13 | 2024-01-30 | 山东钢铁股份有限公司 | Quick furnace repairing method for converter |
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