CN104789723A - Blast furnace body structure and grouting liner-repairing method thereof - Google Patents
Blast furnace body structure and grouting liner-repairing method thereof Download PDFInfo
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- CN104789723A CN104789723A CN201510173633.7A CN201510173633A CN104789723A CN 104789723 A CN104789723 A CN 104789723A CN 201510173633 A CN201510173633 A CN 201510173633A CN 104789723 A CN104789723 A CN 104789723A
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Abstract
The invention relates to a blast furnace body structure which comprises a furnace shell, a cooling wall and a furnace liner from outside to inside in sequence, wherein the cooling wall at least comprises an outer-layer cooling wall propped against the furnace shell and an inner-layer cooling wall propped against the furnace liner; an circulating cooling water pipe is independently arranged inside each of the outer-layer cooling wall and the inner-layer cooling wall; the two ends of each circulating cooling water pipe are respectively externally connected with a water inlet pipe and a water outlet pipe. According to the invention, a burned cooling wall layer is judged through detecting a water leakage condition, namely, a broken opening corresponding to an eroded position of the furnace liner is formed in the circulating cooling water pipe at the burned cooling wall layer, so that a slurry poured into the circulating cooling water pipe at the outermost-layer cooling wall leaking water can overflow from the broken opening of the circulating cooling water pipe to reach the eroded position of the furnace for completing the liner-repairing; therefore, the troublesome for positioning and forming a grouting hole in the furnace shell before the grouting liner-repairing in the prior art is eliminated, the grouting liner-repairing operation of a blast furnace is simplified, and the high accuracy and reliability of a grouting position are ensured.
Description
Technical field
The present invention relates to and be a kind ofly convenient to the blast furnace structure of later stage pressing-in grouting and lining-making and corresponding grouting and lining-making method.
Background technology
Cooling stave is the key part of blast furnace, and be the cooling apparatus of blast furnace lining, it is cooled body of heater by recirculated cooling water, can effectively prevent furnace shell to be heated and burn red, is the vitals maintaining blast furnace safety production.Cooling stave is arranged on the position such as shaft, furnace bosh, bosh, cupola well of blast furnace, not only will bear High Temperature High Pressure, also will bear the impact of furnace charge to its wearing and tearing, the erosion of slag and Gas Flow, industrial very high to its anti-rapid heat cycle performance requriements.After production for some time, because of the impact of the factor such as construction quality, production operation, cooling stave is easily damaged, even under the effect of high-temperature alternate thermal stresses, causes cracking to leak, or is directly burnt out to cause by high temperature and leak.Leak occur time, for the situation of leakage scenarios in controlled range, generally reduce water leakage in blast furnace by controlling the water yield, and for the serious unmanageable situation of seepage, generally directly to close recirculated cooling water and the water outlet shutting recirculated cooling water to avoid the generation of follow-up accident.
Blast furnace ecto-entad is followed successively by furnace shell, cooling stave and furnace lining, furnace lining takes the lead in being degraded, then cause cooling stave to be destroyed occurring leaking, leak the phenomenon of coal gas, causes the deterioration of blast furnace operating environment, the serious normal production that also can affect blast furnace and use.Therefore, must manage to carry out grouting to blast furnace lining to repair to maintain normal production.Patent publication No. CN101289698A discloses a kind of blast furnace pressing-in grouting and lining-making construction method, first on the furnace shell at blast furnace damaged location place, opens mud jacking hole, inserts the mud jacking short tube of band valve, then mud jacking short tube and furnace shell are welded in each mud jacking hole; Again the press-in mud be stirred is pressed in blast furnace by pneumatic mortar machine; After completing mud jacking predetermined amount, pneumatic mortar machine stops operation, and circulation is until all mud jacking holes complete mud jacking.The method increase efficiency and the quality of blast furnace maintenance, and under blast furnace staying state and not damping down state can not be issued to good maintenance effect.But, blemish in an otherwise perfect thing be need on furnace shell, open mud jacking hole, the location in mud jacking hole and to offer be all a difficult problem, adds the difficulty of grouting and lining-making.Patent publication No. CN101649365A discloses a kind of grouting method for blast furnace, by infrared imaging scanning machine infrared thermometer to blast furnace thermometric, find out the position that temperature is relatively high, that determines mud jacking hole with this offers position, object does not destroy cooling stave, make bore position just in time be in the seam crossing of adjacent cooling stave, improve the success ratio of blast furnace grouting.Although the method can avoid the destruction to cooling stave, still need on furnace shell, offer mud jacking hole, perforate positioning action is also very loaded down with trivial details, reduces the efficiency of grouting and lining-making.
Summary of the invention
Technical problem to be solved by this invention provides a kind of blast furnace structure for above-mentioned prior art, the cooling performance of cooling stave can not only be improved, and can occur that erosion post-grouting is made lining and provided operability for follow-up furnace lining, especially can provide a kind of simple to operate, the accurate grouting and lining-making method in grouting position.
The present invention's adopted technical scheme that solves the problem is: a kind of blast furnace structure, ecto-entad comprises furnace shell, cooling stave and furnace lining successively, described cooling stave at least comprises the outer cooling stave leaned on mutually with described furnace shell and the internal layer cooling stave leaned on mutually with described furnace lining, the inside of described outer cooling stave and internal layer cooling stave is separately furnished with circulating cooling water pipe, two ends external water inlet pipe and the rising pipe respectively of described circulating cooling water pipe.
Preferably, described circulating cooling water pipe is even winding in equivalent layer cooling stave, achieve good cooling performance on the one hand, on the other hand, in generation lining erosion when burning out cooling stave, by detecting the water leakage situation Timeliness coverage damage of furnace lining of circulating cooling water pipe, operating personnel's Timeliness coverage problem can be convenient to.
Preferably, the water outlet of described rising pipe is provided with ball valve, and ball valve can the water yield of direct controlled circulation water-cooled tube when cooling stave is intact, directly can play by closing ball valve the effect cutting off current under the situation of cooling stave scaling loss.
Preferably, described rising pipe forms drain trap, can retain ponding in such rising pipe, as water seal with prevent coal gas from rising pipe to outward leakage, affect operating environment.
Comparatively reasonably arrange and be, one or more layers of middle layer cooling stave is provided with between described outer cooling stave and internal layer cooling stave, the inside of described middle layer cooling stave is also separately furnished with circulating cooling water pipe, two ends external water inlet pipe and the rising pipe respectively of described circulating cooling water pipe.The setting of multilayer cooling parietal layer achieves and can get final product according to the water leakage situation of cooling stave the scaling loss degree whether Timeliness coverage furnace lining erosion and cooling stave occur, to carry out grouting and lining-making by the outermost layer cooling stave of scaling loss in time, the cooling stave of blast furnace subsequent job after the intact cooling parietal layer in such outside still can be used as and repairs, ensure the normal operation of blast furnace, extend the work-ing life of blast furnace.
A kind of grouting and lining-making method based on above-mentioned blast furnace structure: first detect each layer cooling stave and whether leak, determine the outermost layer cooling stave leaked, if the outermost layer cooling stave leaked is described outer cooling stave, then need to stop doing business to blast furnace staying, otherwise, grouting and lining-making can be carried out by this outermost layer cooling stave leaked under the condition of damping down or not damping down, be specially the recirculated cooling water of closing this outermost layer cooling stave leaked, by the rising pipe of circulating cooling water pipe docking grout machine, slurry is pressed in the circulating cooling water pipe of this outermost layer cooling stave leaked, damaged mouth from this circulating cooling water pipe is overflowed the furnace lining repaired and be etched by slurry.
The present invention judges the cooling parietal layer of scaling loss by detecting the situation of leaking, namely the circulating cooling water pipe of the cooling parietal layer of scaling loss there will be and is etched the corresponding damaged mouth in position with furnace lining, accordingly, by pouring into slurry in the circulating cooling water pipe of the outermost layer cooling stave leaked, slurry and then can overflow from the damaged mouth of this circulating cooling water pipe the position that is etched reaching furnace lining and complete and make lining.Thus eliminate before conventional grout makes lining and need the location of carrying out mud jacking hole on furnace shell and the trouble offered, simplify blast furnace grouting and make lining operation, ensure that the accurate reliability of grouting position simultaneously.
Compared with prior art, the invention has the advantages that: provide a kind of blast furnace structure, there is multilayer cooling wall structure, every layer of cooling stave is furnished with circulating cooling water pipe all independently, the two ends of circulating cooling water pipe connect independently water inlet pipe and rising pipe respectively, the present invention judges the cooling parietal layer of scaling loss by detecting the situation of leaking, by pouring into slurry in the circulating cooling water pipe of the outermost layer cooling stave leaked, lining reparation is made to the position that furnace lining is etched, eliminate before conventional grout makes lining and need the location of carrying out mud jacking hole on furnace shell and the trouble offered, simplify blast furnace grouting and make lining operation, ensure that the accurate reliability of grouting position simultaneously, contribute to the work-ing life extending blast furnace, with the result of use of repairing rear blast furnace.
Accompanying drawing explanation
Fig. 1 is the structural representation of rising pipe in the embodiment of the present invention;
Fig. 2 is the structural representation of blast furnace in the embodiment of the present invention;
Fig. 3 is the structural representation that the internal layer cooling stave of blast furnace in the embodiment of the present invention is corroded;
Fig. 4 is the structural representation in the embodiment of the present invention after blast furnace reparation.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Figures 1 to 4, blast furnace structure in the present embodiment, ecto-entad comprises furnace shell 1, cooling stave and furnace lining 3 successively, described cooling stave comprises the outer cooling stave 2.1 leaned on mutually with described furnace shell 1 and the internal layer cooling stave 2.2 leaned on mutually with described furnace lining 3, the inside of described outer cooling stave 2.1 and internal layer cooling stave 2.2 is separately furnished with circulating cooling water pipe 4,5, circulating cooling water pipe 4,5 is even winding in equivalent layer cooling stave, two ends independently external water inlet pipe 7.1,7.2 and the rising pipe 6.1,6.2 of described circulating cooling water pipe 4,5.
Above-mentioned rising pipe 6.1,6.2 forms V-type drain trap, the water outlet of rising pipe 6.1,6.2 is provided with ball valve 8, the residual ponding in water crook as water seal can prevent coal gas from rising pipe to outward leakage, affect operating environment, ball valve can at the current finding to cut off in time when leaking in respective cycle water-cooled tube.
Grouting and lining-making method based on above-mentioned blast furnace structure: first whether detection internal layer cooling stave 2.2 and outer cooling stave 2.1 leak, if detect, outer cooling stave 2.1 leaks, and needs to stop doing business to blast furnace staying, need time serious directly to close recirculated water, shut rising pipe, leak if detect and occur over just internal layer cooling stave 2.2, then can when damping down or not damping down carry out grouting and lining-making by the circulating cooling water pipe 5 of internal layer cooling stave 2.2, concrete is operating as the recirculated cooling water of closing internal layer cooling stave 2.2, the rising pipe 6.2 of this circulating cooling water pipe 5 is docked grout machine, press-in slurry in the circulating cooling water pipe 5 of inner layer cooling stave 2.2, the corresponding damaged mouth in position is etched with furnace lining 3 because circulating cooling water pipe 5 has, damaged mouth from this circulating cooling water pipe 5 overflows by slurry makes liner repairing to the position that is etched of furnace lining 3.Because outer cooling stave 2.1 and internal layer cooling stave 2.2 are relatively independent, while carrying out grouting and lining-making by internal layer cooling stave 2.2, outer cooling stave 2.1 still can carry out cooling operations, do not affect blast furnace operation, the blast furnace after reparation still can keep normal cooling performance in follow-up use procedure.
The blast furnace structure of said structure and the blast furnace grouting and lining-making method based on this structure, eliminate before conventional grout makes lining and need the location of carrying out mud jacking hole on furnace shell and the trouble offered, simplify blast furnace grouting and make lining operation, ensure that the accurate reliability of grouting position simultaneously, contribute to the work-ing life extending blast furnace, and repair the result of use of rear blast furnace.
Claims (6)
1. a blast furnace structure, ecto-entad comprises furnace shell, cooling stave and furnace lining successively, it is characterized in that: described cooling stave at least comprises the outer cooling stave leaned on mutually with described furnace shell and the internal layer cooling stave leaned on mutually with described furnace lining, the inside of described outer cooling stave and internal layer cooling stave is separately furnished with circulating cooling water pipe, two ends external water inlet pipe and the rising pipe respectively of described circulating cooling water pipe.
2. blast furnace structure according to claim 1, is characterized in that: described circulating cooling water pipe is even winding in equivalent layer cooling stave.
3. blast furnace structure according to claim 1, is characterized in that: the water outlet of described rising pipe is provided with ball valve.
4. blast furnace structure according to claim 1, is characterized in that: described rising pipe forms drain trap.
5. blast furnace structure according to claim 1, it is characterized in that: between described outer cooling stave and internal layer cooling stave, be provided with one or more layers of middle layer cooling stave, the inside of described middle layer cooling stave is also separately furnished with circulating cooling water pipe, two ends external water inlet pipe and the rising pipe respectively of described circulating cooling water pipe.
6. the grouting and lining-making method based on blast furnace structure described in claim 1 or 5, it is characterized in that: first detect each layer cooling stave and whether leak, determine the outermost layer cooling stave leaked, if the outermost layer cooling stave leaked is described outer cooling stave, then need to stop doing business to blast furnace staying, otherwise, grouting and lining-making can be carried out by this outermost layer cooling stave leaked under the condition of damping down or not damping down, be specially the recirculated cooling water of closing this outermost layer cooling stave leaked, by the rising pipe of circulating cooling water pipe docking grout machine, slurry is pressed in the circulating cooling water pipe of this outermost layer cooling stave leaked, damaged mouth from this circulating cooling water pipe is overflowed the furnace lining repaired and be etched by slurry.
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| CN201510173633.7A CN104789723B (en) | 2015-04-14 | 2015-04-14 | A kind of blast furnace structure and grouting and lining-making method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108588314A (en) * | 2018-04-03 | 2018-09-28 | 莱芜市天铭冶金设备有限公司 | A kind of pre- poling cast-iron cooling wall of high-efficiency long-life and its manufacturing process |
| CN111500809A (en) * | 2020-04-03 | 2020-08-07 | 广东韶钢松山股份有限公司 | Cooling wall plugging process and plugging slurry |
| CN113293247A (en) * | 2021-05-31 | 2021-08-24 | 四川省达州钢铁集团有限责任公司 | Construction method of partial segmental cooling system in blast furnace |
| CN114891940A (en) * | 2022-04-18 | 2022-08-12 | 大连科萌工程材料有限公司 | Method for hot-face grouting of blast furnace carbon brick |
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| CN101020932A (en) * | 2007-01-12 | 2007-08-22 | 汕头华兴冶金备件厂有限公司 | Laminated cooling walls |
| CN101550462A (en) * | 2009-04-24 | 2009-10-07 | 武汉威林炉衬材料有限责任公司 | Method for preparing water cooling system of blast furnace cooling wall |
| CN203782164U (en) * | 2014-04-16 | 2014-08-20 | 唐山国丰钢铁有限公司 | Blast furnace cooling wall leakage repairing structure |
| CN204550640U (en) * | 2015-04-14 | 2015-08-12 | 江阴兴澄特种钢铁有限公司 | A kind of blast furnace structure |
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Patent Citations (5)
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| CN1904081A (en) * | 2005-07-28 | 2007-01-31 | 宝山钢铁股份有限公司 | Sealing method of blast furnace cooling wall joint and its used sealing part |
| CN101020932A (en) * | 2007-01-12 | 2007-08-22 | 汕头华兴冶金备件厂有限公司 | Laminated cooling walls |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108588314A (en) * | 2018-04-03 | 2018-09-28 | 莱芜市天铭冶金设备有限公司 | A kind of pre- poling cast-iron cooling wall of high-efficiency long-life and its manufacturing process |
| CN111500809A (en) * | 2020-04-03 | 2020-08-07 | 广东韶钢松山股份有限公司 | Cooling wall plugging process and plugging slurry |
| CN113293247A (en) * | 2021-05-31 | 2021-08-24 | 四川省达州钢铁集团有限责任公司 | Construction method of partial segmental cooling system in blast furnace |
| CN114891940A (en) * | 2022-04-18 | 2022-08-12 | 大连科萌工程材料有限公司 | Method for hot-face grouting of blast furnace carbon brick |
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| CN104789723B (en) | 2016-11-23 |
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