CN101760576B - Repatching method for top liner of blast furnace hot-wind pipeline - Google Patents

Repatching method for top liner of blast furnace hot-wind pipeline Download PDF

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Publication number
CN101760576B
CN101760576B CN2010101157100A CN201010115710A CN101760576B CN 101760576 B CN101760576 B CN 101760576B CN 2010101157100 A CN2010101157100 A CN 2010101157100A CN 201010115710 A CN201010115710 A CN 201010115710A CN 101760576 B CN101760576 B CN 101760576B
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China
Prior art keywords
pipeline
liner
blast furnace
repatching
box hat
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CN2010101157100A
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CN101760576A (en
Inventor
郑敬先
马金芳
王建民
赵久梁
芦文凯
常醒民
王桂才
蔡景春
王卫平
贾国利
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Beijing Shougang Co Ltd
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Shougang Corp
Hebei Shougang Qianan Iron and Steel Co Ltd
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Priority to CN2010101157100A priority Critical patent/CN101760576B/en
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Abstract

The present invention discloses a repatching method for the top liner of a blast furnace hot-wind pipeline. According to the damage condition of the liner of the pipeline, a pipeline steel housing (1) is provided with a hole, and the periphery of the inner surface of the pipeline steel housing (1) is welded with lifting hooks (6) and a wood mould supporting is supported well (5), and then a working layer pouring material (8) and a warm keeping pouring material (7) are poured, and then the pipeline steel housing (1) is welded well; the pipeline steel housing (1) is welded with more than two mudjacking holes (9), and mudjacking material is pressed into the gap between the pipeline steel housing (1) and the warm-keeping pouring material (7), and the construction pressure is kept between 2 to 3kg/cm2. The repatching method for the top liner of a blast furnace hot-wind pipeline provided by the present invention resolves the emergency gusty repatching problem for the damage of the blast furnace hot-wind pipeline, so that the liner of the blast furnace hot-wind pipeline is repaired fast , thus improving the construction effect of the pipeline repatching.

Description

A kind of Repatching method for top liner of blast furnace hot-wind pipeline
Technical field
The invention provides a kind of Repatching method for top liner of blast furnace hot-wind pipeline, belong to blast-furnace hot-air pipe lining repairing technique field, be specially adapted to repair fast the breakage work liner at blast-furnace hot-air pipeline top.
Background technology
Along with the raising of furnace volume increase and wind-warm syndrome level, the hot air duct working conditions is more and more abominable, and top, blast furnace ripe airduct road is prone to problems such as pipeline box hat temperature rising in iron-making production, threatens the safe handling of hot air duct steel construction.The major cause of these problems is to occur the slit between the liner of hot air duct top to cause and go here and there wind between the refractory materials of pipeline top, when serious working lining brick can take place comes off, hot air duct light cinder brick erosive velocity is accelerated, case temperature raises rapidly even serious accidents such as the pipeline box hat burns takes place, need blowing-out to handle, have a strong impact on the ordinary production of blast furnace.
The blast-furnace hot-air pipe lining generally adopts brick construction at present, the working lining lining brick is generally neck brick structure or modular tile, damaged location also mostly is the pipeline top, even after the blowing-out cooling, damaged position also is difficult for the repairing of laying bricks, and is untimely if liner tile is prepared, laying bricks to repair to cause maintenance to drag the phase, in this case, need a kind of Repatching method for top liner of blast furnace hot-wind pipeline, blast furnace can be resumed production early.
Application number a kind of thermal state method for restoring branch pipe orifice of blast furnace bustle pipe that has been 02137251.9 patent disclosure, this patent adopts hot reparation to damage liner, but still belong to the repairing of laying bricks, if stock is not enough, just can not repair fast, the limitation of this patent is simultaneously, and is very big for the damage intractability of the special shaped brick that can only build by laying bricks or stones from pipe interior.
Application number is that the utility model patent of 200720076146.X discloses a kind of blast-furnace hot-air short tube inwall reparation spray equipment, comprise the spray gun that has cooling water pipeline, and the water source that water coolant is provided, it is characterized in that, it comprises that also can place the rectangular bracket in the described hot blast short pipe pipe, described spray gun can be around rotating the center rotation or being arranged on movably forward and backward on the described carriage, and being provided with cooling-water duct in the described pallet body, an end is provided with entrance of cooling water and the cooling water outlet that is communicated with the water source.This utility model does not need temperature in the heating duct is dropped to room temperature, in the time, adopts a kind of emergent cast method for repairing and mending at short blast furnace staying, implements the maintenance to the hot air furnace hot air short pipe inner lining refractory.The limitation of this spray equipment is only to be applicable to the repairing hot blast short pipe, if particularly spray equipment can not near or see damaged location then can not carry out spray repair and handle.
Summary of the invention
The object of the present invention is to provide a kind of Repatching method for top liner of blast furnace hot-wind pipeline, overcome the shortcoming and defect of prior art, solved the repairing problem that blast-furnace hot-air pipeline top is damaged, be specially adapted to the repairing that the burst of blast-furnace hot-air pipeline top damages, the blast-furnace hot-air pipe lining is repaired fast, reduced the construction working amount, accelerate speed of application, resume production as early as possible, guarantee that simultaneously the zone of repairing can long-time safe and stable operation.The technical solution that the present invention adopts is:
A kind of Repatching method for top liner of blast furnace hot-wind pipeline is characterized in that may further comprise the steps:
1. according to the pipe lining damaged condition, perforate on the pipeline box hat, bore size wants every side less than intact operational layer brick size 80mm, removes the size of thermal insulation layer brick and wants every side greater than intact operational layer brick size 50mm;
2. at the circumferentially-spaced 150-250mm welded suspending hook of pipeline box hat internal surface, the suspension hook lower end is inserted into the working lining mould material; Suspension hook integral body is the waviness stainless steel, and the suspension hook lower end is a crotch-shaped, and suspension hook is wanted to enter into about 1/3rd places of the working lining mould material degree of depth bottom, guarantees working lining mould material stability.
3. having propped up wooden model at pipe interior supports, according to hot air duct material situation, select working lining mould material with the operational layer brick Performance Match, the cast height of working lining mould material exceeds 50-70mm than operational layer brick, the working lining mould material is poured into a mould the insulated pouring material after the maintenance on request, the material capability coupling of insulated pouring material and thermal insulation layer brick, the two-layer mould material of filling forms the plug structure of " up big and down small ", increase the overall construction intensity of cast, improve repairing effect, weld the pipeline box hat after the cast; Described art mould supports, and specification of quality is as the criterion can bear mould material weight, after top repairing inner liner maintenance is finished, also can not remove directly and be burnt by high-temperature hot-air, accelerates speed of application.
4. weldering plural mud jacking hole on the pipeline box hat is pressed into slit between pipeline box hat and the insulated pouring material with grouting material, and operation pressure remains on 2-3kg/cm 2
Weld suspension hook at the inboard circumferentially-spaced 150-250mm of pipeline box hat then, carry out wooden model and support.Cast working lining mould material, cast thermal insulation layer mould material after the maintenance welds the pipeline box hat on request, is pressed into grouting material at last, comes into operation after the baking as requested.
Effect of the present invention is: the blast-furnace hot-air pipeline for burst damages problem, when difficult repairing or molded article material are out of trim after interim blowing-out,, can improve the effect of repairing pipe by implementing above-mentioned measure, shorten the repairing time, blast furnace can be resumed production early.
Description of drawings
Fig. 1: the synoptic diagram of a kind of Repatching method for top liner of blast furnace hot-wind pipeline of the present invention.
Fig. 2: among Fig. 1 the master of suspension hook 6 look, schematic side view.
Wherein:
1 pipeline box hat, 2 spray materials, 3 thermal insulation layer bricks, 4 operational layer bricks, 5 wooden models support 6 suspension hooks, 7 insulated pouring material, 8 working lining mould material, 9 mud jacking holes, 10 grouting materials
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further:
In Fig. 1, at first determine the damaged condition of the low creep andalusite brick 4 of hot air duct top working lining and thermal insulation layer high alumina matter light cinder brick and clay matter light cinder brick 3, more serious for the hot air duct damage, the general cooling hot air duct earlier of selecting enters internal examination affirmation damaged condition then.
Second step, to 1 perforate of hot air duct box hat, bore size wanted every side less than intact operational layer brick 4 size 80mm according to the liner damaged condition, and the clay matter spray material 2 around the perforate will be removed totally, to make things convenient for the soldering stainless steel suspension hook; When liner is damaged at the cleaning top, according to circumstances determine whether contiguous intact operational layer brick 4 is done necessary fixed support, to avoid causing bigger damage; Removing the size of thermal insulation layer brick 3 wants every side greater than intact operational layer brick 4 size 50-80mm; Make suspension hook 6 according to Fig. 2, carry out welded suspending hook 6 at the circumferentially-spaced 150mm or the 250mm of perforate, the stainless steel suspension hook is wanted to enter into position, working lining mould material 8 degree of depth 60-80mm place bottom.
The 3rd step propped up wooden model at pipe interior and has supported 5, then according to hot air duct material situation, select to construct with the andaluzite working lining mould material 8 of operational layer brick 4 Performance Match, the cast height of andaluzite working lining mould material 8 exceeds 50-70mm than operational layer brick 4, working lining andaluzite mould material 8 is poured into a mould clay light weight matter mould material 7 after the maintenance on request, clay light weight matter mould material 7 welds pipeline box hat 1 after the cast.
The 4th step is three mud jacking holes 9 of weldering on pipeline box hat 1, and one of them mud jacking hole is in the high standard higher position of damaged location, in addition two low positions of trying one's best in the both sides, top.Keep valve opening, use pneumatic mortar machine since two side position minimal pressures slurry hole mud jacking, operation pressure 2-3kg/cm 2, the slit between fill pipe box hat 1 and the clay light weight matter mould material 7 emits slurry up to the vertex valve; Carry out mud jacking from the mud jacking hole of opposite side again, treat that vertex mud jacking hole emits the slurry back to adopt 2-3kg/cm 2Pressurize 1 minute.Grouting material 10 adopts high alumina chylema material, maximum critical granularity 1.0mm, and maintenance 8 hours puts into production use after together toasting with blast furnace after the blast furnace spraying.
The invention has the beneficial effects as follows, solved the blast-furnace hot-air pipeline top and damaged problem, be specially adapted to the repairing that the burst of blast-furnace hot-air pipeline top damages, can improve well the construction effect of repairing pipe, shorten the repairing time, blast furnace can be resumed production early; Guarantee that simultaneously the zone of repairing can long-time safe and stable operation.

Claims (1)

1. Repatching method for top liner of blast furnace hot-wind pipeline is characterized in that may further comprise the steps:
1. according to the pipe lining damaged condition, go up perforate at pipeline box hat (1), bore size wants every side less than intact operational layer brick (4) size 80mm, removes the size of thermal insulation layer brick (3) and wants every side greater than intact operational layer brick size 50mm;
2. at the circumferentially-spaced 150-250mm welded suspending hook (6) of pipeline box hat (1) internal surface, the suspension hook lower end is inserted into working lining mould material (8);
3. propped up wooden model at pipe interior and supported (5), according to hot air duct material situation, select working lining mould material (8) with operational layer brick (4) Performance Match, the cast height of working lining mould material (8) exceeds 50-70mm than operational layer brick (4), the working lining mould material is poured into a mould insulated pouring material (7) after the maintenance on request, insulated pouring material (7) mates with the material capability of thermal insulation layer brick (3), welds pipeline box hat (1) after the cast;
4. go up weldering plural mud jacking hole (9) at pipeline box hat (1), grouting material is pressed into slit between pipeline box hat (1) and the insulated pouring material (7), operation pressure maintenance 2-3kg/cm 2
CN2010101157100A 2010-02-26 2010-02-26 Repatching method for top liner of blast furnace hot-wind pipeline Active CN101760576B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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CN101760576B true CN101760576B (en) 2011-08-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102564135A (en) * 2012-02-13 2012-07-11 中国十九冶集团有限公司 Construction method for patching of refractory materials of furnace top of heating furnace

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102206722B (en) * 2011-05-11 2012-10-17 南通宝钢钢铁有限公司 Quick repair method for fallen hot air pipeline refractory
CN102424872A (en) * 2011-12-01 2012-04-25 天津钢铁集团有限公司 Method for patching damaged blast furnace hot air pipeline inner liner in hot state
CN102851422B (en) * 2012-07-05 2014-12-17 北京首钢股份有限公司 Blast furnace tuyere combination firebrick repairing method
CN103898263B (en) * 2014-01-28 2016-05-04 甘肃酒钢集团宏兴钢铁股份有限公司 Hot air duct premixer refractory brick come off quick prosthetic appliance and method
CN105003788A (en) * 2015-06-12 2015-10-28 江苏永钢集团有限公司 Repair method for burnt-red and air-leakage part of pipeline
CN104962678A (en) * 2015-06-12 2015-10-07 江苏永钢集团有限公司 Quick repair structure of pipe red burnt wind leaking place
CN106949337B (en) * 2017-03-30 2020-02-04 中国十九冶集团有限公司 Method for repairing collapsed liner of hot air pipeline
CN110408735B (en) * 2018-04-28 2021-04-02 广东韶钢松山股份有限公司 Method for repairing gooseneck part under blast furnace air supply system hot blast bustle pipe
CN110643773A (en) * 2018-09-15 2020-01-03 广东韶钢松山股份有限公司 Blast furnace hot blast branch pipe port refractory repair method
CN109735675B (en) * 2019-01-28 2020-09-11 五冶集团上海有限公司 Method for quickly overhauling refractory lining of blast furnace hot air main pipe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU404854A1 (en) * 1972-05-06 1978-02-25 Центральный Научно-Исследовательский И Проектный Институт Строительных Металлоконструкций Supporting arrangement for blast furnace hot blow air duct
CN1372008A (en) * 2001-02-20 2002-10-02 首钢公司 Method for preparing water cooling pipe for cooling wall of blast furnace
CN1485446A (en) * 2002-09-28 2004-03-31 宝山钢铁股份有限公司 Thermal state method for restoring branch pipe orifice of blast furnace bustle pipe
CN201121196Y (en) * 2007-09-06 2008-09-24 鞍钢股份有限公司 Warm air pipe operational layer brick
CN201158674Y (en) * 2007-11-13 2008-12-03 上海宝钢设备检修有限公司 Renovation spray coating device for inner wall of blast furnace hot wind short tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU404854A1 (en) * 1972-05-06 1978-02-25 Центральный Научно-Исследовательский И Проектный Институт Строительных Металлоконструкций Supporting arrangement for blast furnace hot blow air duct
CN1372008A (en) * 2001-02-20 2002-10-02 首钢公司 Method for preparing water cooling pipe for cooling wall of blast furnace
CN1485446A (en) * 2002-09-28 2004-03-31 宝山钢铁股份有限公司 Thermal state method for restoring branch pipe orifice of blast furnace bustle pipe
CN201121196Y (en) * 2007-09-06 2008-09-24 鞍钢股份有限公司 Warm air pipe operational layer brick
CN201158674Y (en) * 2007-11-13 2008-12-03 上海宝钢设备检修有限公司 Renovation spray coating device for inner wall of blast furnace hot wind short tube

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张文通等.高炉热风管道内衬破损的修复措施.《冶金动力》.1998,(第3期),53-54. *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102564135A (en) * 2012-02-13 2012-07-11 中国十九冶集团有限公司 Construction method for patching of refractory materials of furnace top of heating furnace

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Effective date of registration: 20140404

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Patentee before: Capital Iron & Steel General Company

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