CN103353231A - Non-stop furnace repairing method for fixed metallurgical furnace arch - Google Patents
Non-stop furnace repairing method for fixed metallurgical furnace arch Download PDFInfo
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- CN103353231A CN103353231A CN2013102670198A CN201310267019A CN103353231A CN 103353231 A CN103353231 A CN 103353231A CN 2013102670198 A CN2013102670198 A CN 2013102670198A CN 201310267019 A CN201310267019 A CN 201310267019A CN 103353231 A CN103353231 A CN 103353231A
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Abstract
The invention discloses a non-shutdown repair method for a fixed metallurgical furnace arch, which comprises the following steps: building a springboard at a column pull rod of the burning furnace arch, and closing a burner of the furnace end; determining the area and radian of the furnace arch to be repaired according to the burning degree and position of the burning furnace arch; manufacturing a supporting arch steel plate by using a steel plate according to the area and radian of the furnace arch to be repaired; transporting the arch supporting steel plate to the upper part of the furnace arch, and paving the arch supporting steel plate along the inner side of the lower part of the burning loss furnace arch; carrying out masonry operation on the built springboard; dismantling the springboard; and starting a burner of the furnace end to finish repairing the furnace arch. According to the non-stop furnace repairing method for the fixed metallurgical furnace arch, the furnace arch can be repaired under the condition that the metallurgical furnace is not stopped, the repairing time is short, the method is simple, and the service life of the metallurgical furnace can be prolonged.
Description
Technical field
The present invention relates to a kind of method for repairing and mending of metallurgical furnace chimney arch, relate in particular to a kind of not blowing out method for repairing and mending of fixed metallurgical furnace chimney arch.
Background technology
Fixed metallurgical furnace is comprised of furnace bottom, burner furnace wall, stove tail furnace wall, both sides furnace wall and chimney arch, and chimney arch is domes, and furnace bottom is antiarch shape, burner furnace wall and stove tail furnace wall are planar structure, around the body of heater column is arranged, column is connected by pull bar, plays the effect of support for metallurgical furnace.
Building by laying bricks or stones of metallurgical furnace is to carry out first building by laying bricks or stones of furnace bottom and furnace wall, after furnace bottom and furnace brickwork are finished, in metallurgical furnace, carry out built with batten, form the arch of furnace roof on top after, carry out again brickwork, until building after the brick operation finishes of chimney arch, the pull bar in the column is fastening after, batten built in the stove is removed, so just finished building by laying bricks or stones of metallurgical furnace.In the firing up process of metallurgical furnace, the pull bar between column is carried out the loose pull bar operation of compartment according to the degrees of expansion of chimney arch, can be held in to a certain degree arch with the chimney arch that keeps metallurgical furnace, keep it stressed evenly.Can find out from the chimney arch building process of metallurgical furnace, for building by laying bricks or stones of metallurgical furnace chimney arch, be to carry out building by laying bricks or stones of chimney arch after the batten built is carried out first in the chimney arch bottom again, that is to say the quality of chimney arch masonry quality, directly affects the stove life-span of metallurgical furnace.
It is fuel that fixed metallurgical furnace adopts fine coal or heavy oil, and burner is located on the burner furnace wall or the chimney arch of close burner.Burner is with certain angle jet flames in the metallurgical furnace, for metallurgical furnace provides heat energy, for the material in the metallurgical furnace is incubated or melts material.Angle such as furnace head burner is installed improper or other reason, and shift phenomenon can occur the flame that burner ejects, and the particle in the fine coal or flame will wash away furnace wall or chimney arch, so that the gradually attenuation of furnace wall or chimney arch, even grill thoroughly.As untimely the scaling loss position is repaired, when treating that furnace wall or chimney arch scaling loss are serious, directly can affect the stove life-span of metallurgical furnace.
When furnace wall such as scaling loss are serious, repair relatively good carrying out, close first the flame of burner, make no longer jet flames of burner; Treat burner no longer during jet flames, the furnace wall that scaling loss is serious is removed, and builds the workman by laying bricks or stones and with refractory brick the position of scaling loss is built by laying bricks or stones, build by laying bricks or stones finish after, the last burner of opening again burner makes it continue jet flames, and metallurgical furnace can be proceeded again to produce like this.
Fixed metallurgical furnace is in the process of operation, because the gas stream in the stove skewness causes chimney arch local scour attenuation, can grill thoroughly by chimney arch when serious, thereby cause chimney arch to cave in, and then affect the stove life-span.According to the building method of chimney arch, when chimney arch such as scaling loss are serious generally speaking, can't repair it, the furnace charge in the metallurgical furnace can only be carried out emptying, carried out the shutdown maintenance operation of metallurgical furnace.
Summary of the invention
The object of the present invention is to provide a kind of metallurgical furnace in the situation that not blowing out is repaired chimney arch, the repairing time is short, and method is simple, can prolong the not blowing out method for repairing and mending of the fixed metallurgical furnace chimney arch of metallurgical furnace shelf life.
For achieving the above object, the technical scheme taked of the present invention is:
A kind of not blowing out method for repairing and mending of fixed metallurgical furnace chimney arch may further comprise the steps:
A. build springboard at the column pull bar place of scaling loss chimney arch;
B. close the burner of burner;
C. according to scaling loss degree and the position of scaling loss chimney arch, need to determine chimney arch area and the chimney arch radian of repairing;
D. chimney arch area and the chimney arch radian repaired are as required made holder arch steel plate with steel plate;
E. will ask the arch steel plate to be transported to the top of chimney arch, holder arch steel plate will be laid along the lower inside of scaling loss chimney arch;
F. build operation by laying bricks or stones at the springboard of building;
G. remove springboard;
H. open the burner of burner, chimney arch is repaired complete.
The arch of holder described in steps d steel plate is more than 1 or 2.
The arch of holder described in step e steel plate is fixedly connected with an end of holder arch steel plate reinforcing bar, and the other end of described holder arch steel plate reinforcing bar is fixedly connected with roofstay.
Described holder is encircleed every limit of steel plate than the wide 20～40cm of described scaling loss chimney arch, large 3～5 ° of the radian of the camber ratio scaling loss chimney arch of described holder arch steel plate.
Adopt the not blowing out method for repairing and mending of fixed metallurgical furnace chimney arch provided by the invention, metallurgical furnace is in the situation that not blowing out can be repaired chimney arch, and the repairing time is short, and method is simple, can prolong the service life of metallurgical furnace.
Description of drawings
Fig. 1 is that fixed metallurgical furnace chimney arch is repaired schematic diagram.
Among the figure, 1-furnace bottom, 2-furnace wall, 3-side wall column, 4-chimney arch, 5-holder arch steel plate, 6-scaling loss chimney arch, 7-holder arch steel plate reinforcing bar, 8-column pull bar screw, 9-roofstay.
The specific embodiment
Below in conjunction with specific embodiment and accompanying drawing thereof, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
As described in Figure 1, fixed metallurgical furnace comprises furnace bottom 1, furnace wall 2 and chimney arch 4, around the furnace wall 2 side wall column 3 is installed, and above chimney arch 4, the top of two relative side wall columns 3 is fixedly connected with roofstay 9 with column pull bar screw 8.
The not blowing out method for repairing and mending of fixed metallurgical furnace chimney arch provided by the invention may further comprise the steps:
1. build springboard at the column pull bar place of scaling loss chimney arch 6.The principle of building of springboard is centered by scaling loss chimney arch 6, and along building all around, the centre is vacated, and the large I of building all around operates in the above for 3 people.The reason of building first springboard is to build the springboard overlong time on the one hand, as closing first the burner of burner, can cause the interior drop in temperature of stove excessively low, heats up slowly and cause, and affects output; Reason on the other hand be the chimney arch scaling loss degree with and the scope that can bear at human body operating personnel's impact of heat radiation.
2. close the burner of burner.
3. the chimney arch 6 usefulness drill rods that scaling loss is serious are smash, and according to scaling loss degree and the position of scaling loss chimney arch 6, need to determine chimney arch area and the chimney arch radian of repairing.
4. chimney arch area and the chimney arch radian repaired are as required made holder arch steel plate 5 with steel plate, and holder arch steel plate 5 can be 1, also can be 2, even more.Every limit of holder arch steel plate 5 is than every hem width 25cm of scaling loss chimney arch 6, and the radian of holder arch steel plate 5 is greater than 4 ° of the radians of scaling loss chimney arch 6.
5. will ask arch steel plate 5 to be transported to the top of chimney arch 4, the lower inside of holder arch steel plate 5 along scaling loss chimney arch 6 laid, and ask arch steel plate 5 and an end of holder arch steel plate reinforcing bar 7 to weld the other end of holder arch steel plate reinforcing bar 7 and roofstay 9 welding.
6. after holder arch steel plate 5 fixes, build the workman by laying bricks or stones and build operation by laying bricks or stones at the springboard of building.
7. build by laying bricks or stones operation complete after, remove springboard.Build by laying bricks or stones complete after because the principle of thermal expansion and arch so that build part by laying bricks or stones and partly support with former chimney arch, forms a complete arcuate structure.
8. unlatching furnace head burner, chimney arch is repaired complete.
Claims (4)
1. the not blowing out method for repairing and mending of a fixed metallurgical furnace chimney arch is characterized in that, may further comprise the steps:
A. build springboard at the column pull bar place of scaling loss chimney arch (6);
B. close the burner of burner;
C. according to scaling loss degree and the position of scaling loss chimney arch (6), need to determine chimney arch area and the chimney arch radian of repairing;
D. chimney arch area and the chimney arch radian repaired are as required made holder arch steel plate (5) with steel plate;
E. will ask arch steel plate (5) to be transported to the top of chimney arch (4), will ask arch steel plate (5) to lay along the lower inside of scaling loss chimney arch (6);
F. build operation by laying bricks or stones at the springboard of building;
G. remove springboard;
H. open the burner of burner, chimney arch is repaired complete.
2. the not blowing out method for repairing and mending of fixed metallurgical furnace chimney arch according to claim 1 is characterized in that, holder arch steel plate (5) is more than 1 or 2 described in the steps d.
3. the not blowing out method for repairing and mending of fixed metallurgical furnace chimney arch according to claim 2, it is characterized in that, holder arch steel plate (5) described in the step e is fixedly connected with an end of holder arch steel plate reinforcing bar (7), and the other end of described holder arch steel plate reinforcing bar (7) is fixedly connected with roofstay (9).
4. the not blowing out method for repairing and mending of fixed metallurgical furnace chimney arch according to claim 2, it is characterized in that, described holder is encircleed every limit of steel plate (5) than the wide 20～40cm of described scaling loss chimney arch (6), large 3～5 ° of the radian of the camber ratio scaling loss chimney arch (6) of described holder arch steel plate (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310267019.8A CN103353231B (en) | 2013-06-29 | 2013-06-29 | Non-stop furnace repairing method for fixed metallurgical furnace arch |
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| CN201310267019.8A CN103353231B (en) | 2013-06-29 | 2013-06-29 | Non-stop furnace repairing method for fixed metallurgical furnace arch |
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| CN103353231B CN103353231B (en) | 2015-05-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066735A (en) * | 2020-07-30 | 2020-12-11 | 白银有色集团股份有限公司 | Method for digging and repairing furnace arch of silver molten pool smelting furnace |
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| JPS528909A (en) * | 1975-07-11 | 1977-01-24 | Kawasaki Steel Corp | Method of building dome type roof bricks |
| JPS61130410A (en) * | 1984-11-30 | 1986-06-18 | Nippon Steel Corp | Method for repairing blast furnace interior |
| JPH08334289A (en) * | 1995-06-07 | 1996-12-17 | Sumitomo Metal Ind Ltd | Method for removing skull and the like in refractory repairing, and its burner |
| EP1120618A2 (en) * | 2000-01-25 | 2001-08-01 | Technological Resources Pty. Ltd. | A method of relining a vessel |
| CN201032385Y (en) * | 2007-04-10 | 2008-03-05 | 上海宝钢设备检修有限公司 | Heat insulation channel for thermal state maintenance of annular furnace lining fireproof material |
| CN101162126A (en) * | 2007-11-27 | 2008-04-16 | 攀枝花新钢钒股份有限公司 | Method for quickly repairing wall surface of furnace kiln in thermal state and special equipment thereof |
| CN102032788A (en) * | 2010-12-13 | 2011-04-27 | 山西太钢不锈钢股份有限公司 | Furnace top repairing method for heating furnace |
| CN102147192A (en) * | 2011-03-21 | 2011-08-10 | 金隆铜业有限公司 | Overhaul method for semi-hot state of flash smelting furnace |
| 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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2013
- 2013-06-29 CN CN201310267019.8A patent/CN103353231B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS528909A (en) * | 1975-07-11 | 1977-01-24 | Kawasaki Steel Corp | Method of building dome type roof bricks |
| JPS61130410A (en) * | 1984-11-30 | 1986-06-18 | Nippon Steel Corp | Method for repairing blast furnace interior |
| JPH08334289A (en) * | 1995-06-07 | 1996-12-17 | Sumitomo Metal Ind Ltd | Method for removing skull and the like in refractory repairing, and its burner |
| EP1120618A2 (en) * | 2000-01-25 | 2001-08-01 | Technological Resources Pty. Ltd. | A method of relining a vessel |
| CN201032385Y (en) * | 2007-04-10 | 2008-03-05 | 上海宝钢设备检修有限公司 | Heat insulation channel for thermal state maintenance of annular furnace lining fireproof material |
| CN101162126A (en) * | 2007-11-27 | 2008-04-16 | 攀枝花新钢钒股份有限公司 | Method for quickly repairing wall surface of furnace kiln in thermal state and special equipment thereof |
| CN102032788A (en) * | 2010-12-13 | 2011-04-27 | 山西太钢不锈钢股份有限公司 | Furnace top repairing method for heating furnace |
| CN102147192A (en) * | 2011-03-21 | 2011-08-10 | 金隆铜业有限公司 | Overhaul method for semi-hot state of flash smelting furnace |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066735A (en) * | 2020-07-30 | 2020-12-11 | 白银有色集团股份有限公司 | Method for digging and repairing furnace arch of silver molten pool smelting furnace |
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| CN103353231B (en) | 2015-05-27 |
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