CN102851422A - Blast furnace tuyere combination firebrick repairing method - Google Patents
Blast furnace tuyere combination firebrick repairing method Download PDFInfo
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- CN102851422A CN102851422A CN2012102322547A CN201210232254A CN102851422A CN 102851422 A CN102851422 A CN 102851422A CN 2012102322547 A CN2012102322547 A CN 2012102322547A CN 201210232254 A CN201210232254 A CN 201210232254A CN 102851422 A CN102851422 A CN 102851422A
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Abstract
The invention discloses a blast furnace tuyere combination firebrick repairing method, which comprises the following steps: (1) dismounting an upper damaged part of a tuyere combination firebrick to expose a tuyere sleeve; (2) fixing an arc-shaped support mold above the tuyere sleeve; (3) performing high-pressure pumping of mixed injection materials above the arc-shaped support mold, performing injection manually by a spray gun to obtain a model with a desired structure so as to form an injection material pile; (4) after injection, standing for 24 hours, when the injection materials reach a solidified state, taking out the arc-shaped support mold, filling buffer slurry into gaps between the tuyere sleeve and the injection material pile. The blast furnace tuyere combination firebrick repairing method provided by the invention is simple in construction condition, high in construction speed, and environment-friendly in construction; a desired structure shape can be constructed according to the requirements; thermal shock, high temperature erosion and mechanical scouring caused by frequent temperature change in the furnace can be resisted during the production process.
Description
Technical field
The present invention relates to blast furnace lining damage revamping technical field, particularly a kind of method of Combination Firebrick for BF Tuyere Rapid-Repair.
Background technology
The effect of Combination Firebrick for BF Tuyere mainly is the protection tuyere case, supports the air port with upper furnace body cooling stave protection tile; Simultaneously protection tile progressively corrode peel off after, support slag crust and residual brick that the cooling stave surface forms.In iron-making production, the environment in zone, air port is the most abominable and complicated, and tuyere combined brick is subject to alkali-metal erosion, constantly the washing away of high-temperature coal air-flow, slag molten iron, and gradually attenuation, particularly under action of gravity, its top breakage is even more serious.After the tuyere combined brick attenuation, the type of furnace changes, the slag crust bad stability, and the initial gas flow distribution of blast furnace is affected, thereby affects the stable smooth operation of blast furnace.Because the attenuation of tuyere combined brick makes tuyere case exposed out, aggravated high temperature erosion and the mechanical wear of tuyere case simultaneously, reduce work-ing life, change frequently tuyere case unplanned furnace outage time is prolonged, affect blast furnace iron output, cause serious financial loss.
After tuyere combined brick damages at present, the best way is that the old modular tile in top of removing well damage is built by laying bricks or stones again, but new modular tile fabrication cycle and the time of building by laying bricks or stones are all very long, (modular tile is larger for the construction organization difficulty, can not enter in the blast furnace from the air port), simultaneously the old modular tile in bottom is also imperfect, and masonry quality can not guarantee, it is unpractical therefore again building new modular tile by laying bricks or stones; If adopt the semidrying spraying to repair, the density of spray material and coating thickness all do not reach requirement, and spray material and residual brick also undesirable in conjunction with effect namely is etched soon after the repairing, peels off, and do not reach result of use; If adopt mould material to repair, density and thickness all can reach requirement, but the mould material flowability is larger, difficult forming, and making mold too wastes time and energy.
Summary of the invention
Technical problem to be solved by this invention provides a kind of Combination Firebrick for BF Tuyere method for repairing and mending quick, that repairing quality is high of repairing.
For solving the problems of the technologies described above, the invention provides a kind of Combination Firebrick for BF Tuyere method for repairing and mending, comprise following step:
1. remove tuyere combined brick top broken parts, expose tuyere case;
2. above tuyere case fixedly arc support mold;
3. the spray jetting material forms the spray stockpile above arc supports mold;
4. take out arc and support mold, the gap filling buffering mud between tuyere case and spray stockpile.
Further, described jetting material is the High-Alumina jetting material of silicon carbide-containing, water addition ratio example 3%-7%, density 2.8-3.0g/cm.
Further, described spray jetting material is that the jetting material that will mix adopts the high pressure pumping, manually holds spray gun and carries out spray.
Further, the method for described formation spray stockpile is at the uniform velocity mobile spray gun, makes jetting material progressively pile high heap thick, and rear formation spray stockpile is solidified in structural shape spray moulding on demand.
Further, described taking-up arc support mold be spray is complete leave standstill 24 hours after, when described spray stockpile reaches curdled appearance, arc is supported mold takes out.
Combination Firebrick for BF Tuyere method for repairing and mending provided by the invention, speed of application is fast, and the bounce-back rate is low, fast drying, execution conditions are simple, and construction environment is friendly; The needed structural shape of constructing out as required, in process of production can reaistance furnace in temperature the frequent variations thermal shock resistance, high temperature erosion and the mechanical erosion that produce.
Description of drawings
The schematic diagram of the Combination Firebrick for BF Tuyere that Fig. 1 provides for the embodiment of the invention.
Fig. 2 supports the mold scheme of installation for the arc that the embodiment of the invention provides.
The spray construction schematic diagram of the Combination Firebrick for BF Tuyere method for repairing and mending that Fig. 3 provides for the embodiment of the invention.
Embodiment
A kind of Combination Firebrick for BF Tuyere method for repairing and mending that the embodiment of the invention provides comprises following step:
1. remove tuyere combined brick 1 top broken parts, expose tuyere case 3;
2. above tuyere case 3 fixedly arc support mold 5;
3. the spray jetting material forms spray stockpile 7 above arc supports mold 5;
4. take out arc and support mold 5, fill in the slit 4 of 7 of tuyere case 3 and spray stockpiles and cushion mud.
Wherein, jetting material is the High-Alumina jetting material of silicon carbide-containing, water addition ratio example 3%-7%, density 2.8-3.0g/cm.
Wherein, the spray jetting material is that the jetting material that will mix adopts the high pressure pumping, manually holds spray gun 6 and carries out spray.
Wherein, the method that forms spray stockpile 7 is at the uniform velocity mobile spray gun 6, makes jetting material progressively pile high heap thick, and rear formation spray stockpile 7 is solidified in structural shape spray moulding on demand.
Wherein, take out arc support mold 5 be spray is complete leave standstill 24 hours after, when spray stockpile 7 reaches curdled appearance, arc is supported mold 5 takes out.
Be described further below in conjunction with the embodiment of accompanying drawing to Combination Firebrick for BF Tuyere method for repairing and mending provided by the invention:
1, as shown in Figure 1; tuyere combined brick 1 is supporting slag crust and the residual brick 2 on above stack stave surface, air port, and protection tuyere case 3 is avoided the erosion of the interior molten iron of blast furnace and furnace charge, is annulus 4 between tuyere case 3 and the tuyere combined brick 1; the inner buffering mud of filling plays the buffering contact action.
2, enter in the blast furnace after shutdown maintenance work begins, the top that tuyere combined brick 1 damages is removed, expose tuyere case 3, and slag iron is cleaned out, and repair material can be combined firmly with the former brick in bottom and stack stave on every side.
3, as shown in Figure 2, make arc with sheet plate and support mold 5, be fixed on the top of tuyere case 3.
4, preparation jetting material, jetting material is the High-Alumina jetting material that adopts a kind of silicon carbide-containing, and this jetting material water addition ratio example is controlled at 5%, and volume density can reach 2.9g/cm
3
5, as shown in Figure 3, jetting material adopts the high pressure pumping, manually hold spray gun 6 and carry out the spray moulding, and at the uniform velocity mobile spray gun, make jetting material progressively pile high heap thick, be conducive to reduce apparent porosity, guarantee between layers fine and close combination of jetting material, rear formation spray stockpile 7 is solidified in structural shape spray moulding on demand.
6, construction was left standstill 24 hours after complete, and spray stockpile 7 has reached curdled appearance, after arc is supported mold 5 and takes out, filled annulus 4 with buffering mud.
7, the blowing-in operation of can blowing behind on request the drying out curve baker.
A kind of Combination Firebrick for BF Tuyere method for repairing and mending provided by the invention can effectively reduce the engineering time and reduce the construction organization difficulty; Farthest improve simultaneously repairing quality, prolong the work-ing life of tuyere case; Reduce simultaneously the replacing number of times of tuyere case, reduce the fluctuation of iron production declining and the working of a furnace, effectively guaranteed the safe natural labor situation of blast furnace.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to example the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. a Combination Firebrick for BF Tuyere method for repairing and mending is characterized in that, comprising:
Remove tuyere combined brick top broken parts, expose tuyere case;
Fixedly arc supports mold above tuyere case;
The spray jetting material forms the spray stockpile above arc supports mold;
Take out arc and support mold, the gap filling buffering mud between tuyere case and spray stockpile.
2. Combination Firebrick for BF Tuyere method for repairing and mending according to claim 1, it is characterized in that: described jetting material is the High-Alumina jetting material of silicon carbide-containing, water addition ratio example 3%-7%, density 2.8-3.0g/cm.
3. Combination Firebrick for BF Tuyere method for repairing and mending according to claim 1 is characterized in that: described spray jetting material is that the jetting material that will mix adopts the high pressure pumping, manually holds spray gun and carries out spray.
4. Combination Firebrick for BF Tuyere method for repairing and mending according to claim 3, it is characterized in that: the method for described formation spray stockpile is at the uniform velocity mobile spray gun, makes jetting material progressively pile high heap thick, rear formation spray stockpile is solidified in structural shape spray moulding on demand.
5. Combination Firebrick for BF Tuyere method for repairing and mending according to claim 1 is characterized in that: described taking-up arc support mold be spray is complete leave standstill 24 hours after, when described spray stockpile reaches curdled appearance, arc is supported mold takes out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210232254.7A CN102851422B (en) | 2012-07-05 | 2012-07-05 | Blast furnace tuyere combination firebrick repairing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210232254.7A CN102851422B (en) | 2012-07-05 | 2012-07-05 | Blast furnace tuyere combination firebrick repairing method |
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| CN102851422A true CN102851422A (en) | 2013-01-02 |
| CN102851422B CN102851422B (en) | 2014-12-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108728666A (en) * | 2018-07-25 | 2018-11-02 | 河南中原黄金冶炼厂有限责任公司 | A kind of gland-type smelting furnace |
| CN110527766A (en) * | 2019-08-21 | 2019-12-03 | 新兴铸管股份有限公司 | A kind of blast-furnace tuyere band integrally repairs casting method |
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| JPH06192714A (en) * | 1992-12-24 | 1994-07-12 | Sumitomo Metal Ind Ltd | Method for removing ash on inner surface of tuyere in blast furnace |
| JPH07228907A (en) * | 1994-02-18 | 1995-08-29 | Nippon Steel Corp | Method for preventing leakage of water from broken tuyere |
| JP2004293951A (en) * | 2003-03-27 | 2004-10-21 | Nisshin Steel Co Ltd | Hot spray repair method |
| CN101402527A (en) * | 2008-10-30 | 2009-04-08 | 武汉科技大学 | Compact aluminum silicon carbide composite material and method of manufacturing the same |
| CN101509051A (en) * | 2009-03-24 | 2009-08-19 | 中国第一冶金建设有限责任公司 | Building and supporting method for semiring brick on hoogoven's warm-air duct inside lining |
| CN101760576A (en) * | 2010-02-26 | 2010-06-30 | 河北省首钢迁安钢铁有限责任公司 | Repatching method for top liner of blast furnace hot-wind pipeline |
| CN101857444A (en) * | 2010-05-21 | 2010-10-13 | 河南华西耐火材料有限公司 | Thermal state ceramic jetting material for longevity type blast furnace |
| CN102040386A (en) * | 2010-11-01 | 2011-05-04 | 濮阳濮耐高温材料（集团）股份有限公司 | Torpedo can spouting material and spouting method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1036194A (en) * | 1988-03-28 | 1989-10-11 | 冶金工业部武汉钢铁设计研究院 | Alumina carbon brick and making thereof |
| JPH06192714A (en) * | 1992-12-24 | 1994-07-12 | Sumitomo Metal Ind Ltd | Method for removing ash on inner surface of tuyere in blast furnace |
| JPH07228907A (en) * | 1994-02-18 | 1995-08-29 | Nippon Steel Corp | Method for preventing leakage of water from broken tuyere |
| JP2004293951A (en) * | 2003-03-27 | 2004-10-21 | Nisshin Steel Co Ltd | Hot spray repair method |
| CN101402527A (en) * | 2008-10-30 | 2009-04-08 | 武汉科技大学 | Compact aluminum silicon carbide composite material and method of manufacturing the same |
| CN101509051A (en) * | 2009-03-24 | 2009-08-19 | 中国第一冶金建设有限责任公司 | Building and supporting method for semiring brick on hoogoven's warm-air duct inside lining |
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| CN101857444A (en) * | 2010-05-21 | 2010-10-13 | 河南华西耐火材料有限公司 | Thermal state ceramic jetting material for longevity type blast furnace |
| CN102040386A (en) * | 2010-11-01 | 2011-05-04 | 濮阳濮耐高温材料（集团）股份有限公司 | Torpedo can spouting material and spouting method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108728666A (en) * | 2018-07-25 | 2018-11-02 | 河南中原黄金冶炼厂有限责任公司 | A kind of gland-type smelting furnace |
| CN108728666B (en) * | 2018-07-25 | 2023-09-22 | 河南中原黄金冶炼厂有限责任公司 | Gland type smelting furnace |
| CN110527766A (en) * | 2019-08-21 | 2019-12-03 | 新兴铸管股份有限公司 | A kind of blast-furnace tuyere band integrally repairs casting method |
| CN110527766B (en) * | 2019-08-21 | 2021-05-14 | 新兴铸管股份有限公司 | Integral repairing and pouring method for tuyere belt of blast furnace |
Also Published As
| Publication number | Publication date |
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| CN102851422B (en) | 2014-12-17 |
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Free format text: FORMER OWNER: CAPITAL IRON + STEEL GENERAL CO. Effective date: 20140404 Owner name: BEIJING SHOUGANG CO., LTD. Free format text: FORMER OWNER: HEBEI SHOUGANG QIAN AN STEEL CO., LTD. Effective date: 20140404 |
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Effective date of registration: 20140404 Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Applicant after: Beijing Shougang Co., Ltd. Address before: Yangzidian Town, Tangshan City City, Qian'an province Hebei 064404 Applicant before: Hebei Shougang Qian'an Steel Co., Ltd. Applicant before: Capital Iron & Steel General Company |
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