CN102409120B - Blast Furnace Bottom Replacement Method - Google Patents
Blast Furnace Bottom Replacement Method Download PDFInfo
- Publication number
- CN102409120B CN102409120B CN 201110333542 CN201110333542A CN102409120B CN 102409120 B CN102409120 B CN 102409120B CN 201110333542 CN201110333542 CN 201110333542 CN 201110333542 A CN201110333542 A CN 201110333542A CN 102409120 B CN102409120 B CN 102409120B
- Authority
- CN
- China
- Prior art keywords
- furnace
- heater
- furnace bottom
- blast furnace
- top body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000006073 displacement reaction Methods 0.000 claims description 17
- 238000009412 basement excavation Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 230000008569 process Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000000916 dilatatory effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a method for replacing a blast furnace bottom, which can shorten the construction period for replacing the blast furnace bottom. The method mainly comprises the steps of firstly, dividing a blast furnace on a furnace base into a furnace bottom and an upper furnace body, and then lifting and fixing the upper furnace body; then the furnace bottom on the furnace foundation is dismantled; then, determining a theoretical furnace bottom central point and a theoretical furnace bottom elevation on the furnace foundation; then installing a new furnace bottom on the furnace foundation according to the theoretical furnace bottom central point and the theoretical furnace bottom elevation; and finally, the upper furnace body is descended and connected with a new furnace bottom on the furnace base. Because the upper furnace body does not need to be dismantled, the replacement period of the furnace bottom can be obviously shortened, and the production benefit is favorably improved. In addition, the lifting of the upper furnace body can be realized through a hydraulic cylinder, so that the construction period can be further shortened.
Description
Technical field
The present invention relates to a kind of method for replacing bottom of blast furnace of using in the blast furnace overhaul process.
Background technology
For the serious blast furnace maintenance of furnace bottom damage, in prior art, change the Blast Furnace Bottom common practices and have two kinds: first sawing method, namely displacement is cut at certain position, basis below furnace bottom, be beneficial to install slide rail or the rolling member of traction furnace bottom, to residual cured article upper surface place's furnace shell cutting in stove, and partly adopt during welding for steel structure to fix or use steel cable suspension for the furnace shell more than the furnace shell cut surface.This method Main Problems is: the sawing equipment of employing and slide rail transverse-moving mechanism more complicated, and investment is large, operational difficulty in Blast Furnace Bottom limited space; The furnace bottom basis there is infringement, must again repairs the basis; The dismounting amount is large, adopts sawing method, slide rail discharging speed slow, long in time limit; Because the top body of heater is fixed, because of without the lifting space, can only inlay when recovering furnace bottom and cutting off the part furnace shell recovery is installed, construction is difficulty comparatively.It two is that whole blast furnace is changed, adopt whole driven mode, whole passing formula is namely first with old blast furnace complete removal from top to bottom, then the mode of new blast furnace by translation is transported on the furnace foundation of former blast furnace, for example Chinese patent 98125169.2 discloses the self-contained passing technology of a kind of blast furnace overhaul and device.This method also exists long in time limit, and construction investment is large, complex process, the deficiency that cost is high.
Summary of the invention
The technical problem that the present invention solves is to provide the method for replacing bottom of blast furnace that a kind of duration is shorter and cost is low.
The technical solution adopted for the present invention to solve the technical problems is: method for replacing bottom of blast furnace comprises the following steps:
A, the blast furnace on furnace foundation is divided into furnace bottom and top body of heater, hoists the top body of heater rear fixing by hoisting appliance;
B, the furnace bottom on furnace foundation is removed;
C, determine theoretical furnace bottom central point and theoretical hearth level on furnace foundation;
D, theoretical furnace bottom central point and the theoretical hearth level determined according to step C are installed new furnace bottom on furnace foundation;
E, the top body of heater is descended and be connected with new furnace bottom on furnace foundation.
Be further: the top body of heater in described steps A hoists by hoisting appliance and realizes by the following method: set up support around blast furnace, at the top of top body of heater installation bracket, top at support arranges hoisting appliance, by the hoisting appliance jacking bracket, the top body of heater is hoisted.
Be further: in steps A, described support comprises rack body, also comprise the support beam structure that is connected with rack body, the top of support beam structure is connected with the Tiebar structure that is connected with rack body, the below of support beam structure is connected be used to the Eight characters pole structure that supports described support beam structure, and described hoisting appliance is arranged on support beam structure.
Be further: the hoisting appliance in described steps A comprises along circumferential 3 the uniform jacking apparatus of top body of heater at least.
Be further: described jacking apparatus is hydro-cylinder.
Be further: be positioned at each jacking apparatus place and all be provided with adjustable for height bracket support structure on support.
Be further: described bracket support structure is N the cushion block that stacks.
Be further: described each jacking apparatus place all is provided with the indicating unit that is used to indicate top body of heater one side displacement vertically corresponding to jacking apparatus.
Be further: described indicating unit comprises the scale that vertically extends on the support in the outside that is arranged on the pointer on carriage and is arranged on jacking apparatus, the described scale of described pointed.
Be further: the method for dismounting of the furnace bottom in described step B is: first open a discharge through hole on the sidewall of furnace bottom, then drive excavation machinery into furnace bottom inside by the discharge through hole, by excavation machinery, furnace bottom is removed from inside to outside successively.
The invention has the beneficial effects as follows:
1, owing to not needing to remove the top body of heater, can significantly shorten furnace bottom and change the duration, be conducive to improve productivity effect, returning when filling new furnace bottom, if installing space is not enough, can the top body of heater be risen by hoisting appliance and rise to proper height, so just there are enough installing spaces that new furnace bottom is installed;
2, support beam structure supports by the cylinder lever connecting rod structure and with Eight characters pole structure, and stressed transmission is succinctly reasonable, to the installing space strong adaptability, and can give full play to the mechanical property of steel, reduces rolled steel dosage, is conducive to reduce the cost that furnace bottom is changed;
3, by indicating unit is set, can be convenient to accurately control top body of heater displacement vertically, be conducive to shorten furnace bottom and change the duration;
4, by bracket support structure 12 is set, can play the effect of temporary supporting, also can play the effect of safeguard protection;
5, by the discharge through hole is set, be conducive to fast dismantling except furnace bottom, be conducive to shorten furnace bottom and change the duration.
Description of drawings
Fig. 1 is with top body of heater jacking and by the bracket support structure schematic diagram that the top converter body support is fixing by hoisting appliance;
Fig. 2 is the enlarged view of a-quadrant in Fig. 1;
Fig. 3 for the discharge through hole is set at furnace bottom and by excavation machinery with the inner schematic diagram of removing of furnace bottom;
Fig. 4 is the set-up mode schematic diagram of pointer and scale;
Fig. 5 is the position relationship schematic diagram of Eight characters pole structure, Tiebar structure, support beam structure and rack body.
Be labeled as in figure: Eight characters pole structure 1, Tiebar structure 2, support beam structure 3, rack body 4, top body of heater 5, furnace bottom 6, furnace foundation 7, bracket 8, backing ring 9, carriage 10, jacking apparatus 11, bracket support structure 12, discharge through hole 13, excavation machinery 14, pointer 15, scale 16, framework 17, the top body of heater is position limiting structure 18 radially.
Embodiment
The present invention is further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1 to Figure 3, method for replacing bottom of blast furnace comprises the following steps:
A, the blast furnace on furnace foundation 7 is divided into furnace bottom 6 and top body of heater 5, hoists top body of heater 5 rear fixing by hoisting appliance;
B, the furnace bottom 6 on furnace foundation 7 is removed;
C, determine theoretical furnace bottom central point and theoretical hearth level on furnace foundation 7;
D, theoretical furnace bottom central point and the theoretical hearth level determined according to step C are installed new furnace bottom on furnace foundation 7;
E, top body of heater 5 is descended and be connected with new furnace bottom on furnace foundation 7.
In above-mentioned steps C, the method that is used for definite theoretical furnace bottom central point and theoretical hearth level on furnace foundation 7 when determining again to build blast furnace in theoretical furnace bottom central point and theoretical hearth level and prior art on furnace foundation is identical.The method that is used for installing new furnace bottom when again building blast furnace in the installation method of new furnace bottom and prior art on furnace foundation in above-mentioned steps D is identical, in addition, when in described step D, new furnace bottom being installed, can adopt the dilatory windlass of vertical-lift windlass cooperation level that new furnace bottom is installed, can improve like this installation effectiveness of new furnace bottom.Above-mentioned method for replacing bottom of blast furnace compared with prior art, remarkable reduction of erection time, take No. 6 blast furnaces of elder brother's steel as example, but adopt method of the present invention to change 30 days furnace bottom reductions of erection time, by 3000 yuan per ton, the saved duration can increase by 36,000 ten thousand yuan of benefits by 4000 tons of average daily output iron, molten iron unit price.
in addition, in above-mentioned steps B, the method that furnace bottom 6 is removed has multiple, for example can furnace bottom 6 be removed from inside to outside gradually according to the method for dismounting that adopts during with the blast furnace integral demounting in prior art, but in prior art, the waste material that produces when furnace bottom is removed need to be gone out from handling above furnace bottom, be not easy to like this furnace bottom fast dismantling is removed, for fast dismantling removes furnace bottom, and then be conducive to the reduction of erection time, the method for dismounting of the furnace bottom 6 in described step B is: first open a discharge through hole 13 on the sidewall of furnace bottom 6, then drive excavation machinery 14 into furnace bottom inside by discharge through hole 13, by excavation machinery 14, furnace bottom 6 is removed from inside to outside successively.Adopt aforesaid method, can waste material be discharged from the discharge through hole, efficient and convenient, because furnace bottom dismounting workload is larger, can realize that by excavation machinery 14 fast dismantling of furnace bottom removes.In addition, above-mentioned discharge through hole 13 can be arranged on high iron notch absolute altitude position between the tuyere zone hypostome, at this moment, will be at the tuyere zone 19 of blast furnace bottom or near tuyere zone 19 positions cutting during blast furnace in cutting, and it should be noted that, when the cutting last furnace shell, if the tuyere zone furnace shell is not changed, to avoid damaging the tuyere zone furnace shell.Residing position, air port is enclosed in one of the namely circumferential setting in blast furnace bottom of tuyere zone 19, adopt aforesaid way that the blast furnace cutting is divided into top body of heater and furnace bottom, being conducive to reserve enough spaces drives in stove by discharge through hole 13 from the platform that taps a blast furnace for excavation machinery 14, adopt aforesaid method can effectively reduce labour intensity, put forward main working efficiency, be conducive to successively approximately maintenance duration.
Hoisting appliance in above-mentioned steps A can be elevator rigging mechanism, hoisting of top body of heater 5 can realize by the method that elevator rigging mechanism suspends in midair, namely top body of heater 5 is suspended in midair to certain altitude, by auxiliary frame, top body of heater 5 is fixed again, but the relevant device that this method needs is more, complex process need a large amount of personnel's operations, and the duration is longer.For the further reduction of erection time, simplify technique, save manpower, described steps A middle and upper part body of heater hoists by hoisting appliance and realizes by the following method: set up support around blast furnace, this support can be set up on the basis of the original framework 17 of blast furnace also and can set up in the inside of framework 17, at the top of top body of heater 5 installation bracket 10, at the top of support, hoisting appliance is set, by hoisting appliance jacking bracket 10, top body of heater 5 is hoisted.Can be by being arranged on bracket support structure 12 Support brackets 10 realizations the fixing the top body of heater 5 after hoisting that is positioned at carriage 10 belows on support after hoisting.in addition, in order to prevent that the top body of heater from amplitude swing occuring in the process of hoisting, cause potential safety hazard, on support or on the original framework 17 of blast furnace, body of heater radially position limiting structure 18 in top can be set, this top body of heater radially position limiting structure 18 can be a plurality of supporting bar structures, one end of supporting bar structure contacts with the top body of heater, other parts be fixed on support or framework 17 on, the top body of heater radially quantity of position limiting structure 18 can be determined according to practical situation, for example can be along the top body of heater circumferentially arrange 3, 5 or other quantity, by the top body of heater radially position limiting structure 18 trend that moves radially of top body of heater is limited, prevent that the top body of heater from swinging under external force.In addition, above-mentioned hoisting appliance can also can make top body of heater 5 descend 5 jackings of top body of heater, and such hoisting appliance can be hydro-cylinder or screw block etc.By above-mentioned hoisting appliance, top body of heater 5 is carried out jacking, efficient and convenient, do not need to expend a large amount of manpowers, and the relevant device that uses is less, cost is lower.To keep stable in top body of heater 5 processes of rising or falling in order making, to improve the security of operation, the preferred implementation of above-mentioned hoisting appliance is: the hoisting appliance in described steps A comprises along circumferential uniform 3 jacking apparatus 11 of top body of heater at least.Because jacking apparatus 11 is uniform, so top body of heater 5 stress equalizations, the stability that rises or descend can be guaranteed.Above-mentioned jacking apparatus 11 can be screw block, is preferably hydro-cylinder, and because of hydro-cylinder installation and easy to operate, Stroke Control is accurate.the embodiment of above-mentioned carriage 10 has multiple, for example can be at a plurality of trays of circumferential connection of top body of heater 5, the corresponding tray of each jacking apparatus 11, but might make like this top body of heater 5 unbalance stress, cause the damage of top body of heater 5 in process of rising or falling, in order to overcome above-mentioned deficiency, preferred implementation is: above-mentioned carriage 10 comprises the backing ring 9 at the top that is arranged on top body of heater 5 and is arranged on circumferential uniform a plurality of brackets 8 along backing ring 9 on the outer wall of backing ring 9, the quantity of bracket 8 is identical with the quantity of jacking apparatus 11, each jacking apparatus comes jacking backing ring 9 by bracket 8 corresponding to jacking, backing ring 9 can drive top body of heater 5 and rise, certainly, also can top body of heater 5 be descended by jacking apparatus, when top body of heater 5 rise or descend complete after, can support above-mentioned bracket 8 by bracket support structure 12, realization is fixing to top body of heater 5.By above analysis as can be known, above-mentioned bracket support structure 12 can play the effect of temporary supporting, be further, security when using in order to improve jacking apparatus, place, above-mentioned jacking apparatus position all is provided with bracket support structure 12, and this bracket support structure 12 is adjustable for height bracket support structure, when jacking apparatus breaks down, can pass through the above-mentioned carriage of bracket support structure temporary supporting, and then the top body of heater is carried out temporary supporting, prevent that the top body of heater from falling to causing potential safety hazard rapidly.This bracket support structure can be telescopic rod member, is preferably N the cushion block that mutually stacks, and the quantity of cushion block can be 10,20 etc., can determine according to practical situation, and when the operation jacking apparatus, cushion block can be withdrawn from one by one, abdicate stroke to jacking apparatus.
Above-mentioned support is generally made with steel, be used for supporting elevation mechanism steel material used on support in order to reduce, in steps A, described support comprises rack body 4, also comprise the support beam structure 3 that is connected with rack body 4, the top of support beam structure 3 is connected with the Tiebar structure 2 that is connected with rack body 4, and the below of support beam structure 3 is connected be used to the Eight characters pole structure 1 that supports described support beam structure 3, and described hoisting appliance is arranged on support beam structure 3.Because the weight of top body of heater 5 has upper kiloton, so the hoisting appliance pressure is larger, and the girder construction pressure that is used for supporting elevation mechanism on corresponding support is also larger, generally need use great deal of steel.And in the present invention, support beam structure supports by the cylinder lever connecting rod structure and with Eight characters pole structure, and stressed transmission is succinctly reasonable, to the installing space strong adaptability, and can give full play to the mechanical property of steel, reduces rolled steel dosage.Above-mentioned Tiebar structure 2 can arrange a plurality of, its quantity can arrange according to practical situation, for example can be along circumferential uniform 4 Tiebar structures 2 of top body of heater 5, when above-mentioned hoisting appliance is comprised of 4 the axial uniform jacking apparatus along top body of heater 5, above-mentioned 4 Tiebar structures 2 can be corresponding one by one with 4 jacking apparatus, as depicted in figs. 1 and 2, can give full play to like this mechanical property of steel, reduce the usage quantity of steel.The pole structure that above-mentioned Eight characters pole structure 1 namely becomes the Eight characters to arrange can arrange a plurality ofly, and the quantity of Eight characters pole structure 1 can be determined according to practical situation.
In order accurately to control the displacement of top body of heater 5 in the vertical directions, be convenient to rising that the site work personnel determine that fast top body of heater 5 is concrete or the displacement of decline, described each jacking apparatus 11 places all are provided with the indicating unit of the top body of heater one side displacement vertically that is used to indicate jacking apparatus 11 correspondences, indicating unit of the namely supporting installation of each jacking apparatus 11.By indicating unit, the site work personnel can accurately control each jacking apparatus 11, and body of heater 5 in the vertical directions in top are accurately moved.For example need top body of heater 5 to descend 5 centimetres the time, can indicate by indicating unit the slippage of top body of heater 5, descended 5 centimetres the time when indicating unit shows top body of heater 5, hoisting appliance can be shut down.Above-mentioned indicating unit can comprise displacement sensor, indicating meter and treater, and displacement sensor can pass to treater with the displacement signal of top body of heater 5, and treater can change into this signal corresponding physical quantity and show on indicating meter.For simplified construction, reduce costs, described indicating unit comprises the scale 16 that vertically extends on the support of the pointer 15 that is arranged on carriage 10 and the outside that is arranged on jacking apparatus, described pointer 15 points to described scale 16, as shown in Figure 4, above-mentioned pointer 15 can be arranged on the top of carriage, if carriage is comprised of backing ring 9 and bracket 8, pointer 15 can be arranged on the top of backing ring 9, and said scale 16 can be arranged on Tiebar structure 2.when above-mentioned indicating unit arranges, pointer 15 supports the use with scale 16, and each jacking apparatus place arranges pointer 15 and scale 16, but precise monitoring and control each jacking apparatus like this, also just can accurately control the rising of each jacking apparatus corresponding top body of heater 5 one sides and the displacement of decline, if top body of heater 5 is in process of rising or falling, one side of top body of heater 5 has a down dip, illustrate that the displacement deficiency that this time canting is risen or the displacement that descends are too much, at this moment can read corresponding displacement by this time canting corresponding pointer and scale, then compare by the displacement of this time canting and the displacement of top other side of body of heater, can determine that this time canting also needs the displacement that rises or descend.
Claims (9)
1. method for replacing bottom of blast furnace is characterized in that comprising the following steps:
A, the blast furnace on furnace foundation (7) is divided into furnace bottom (6) and top body of heater (5), hoists top body of heater (5) rear fixing by hoisting appliance;
B, the furnace bottom (6) on furnace foundation (7) is removed;
C, determine theoretical furnace bottom central point and theoretical hearth level furnace foundation (7) is upper;
D, theoretical furnace bottom central point and the theoretical hearth level definite according to step C are upward installed new furnace bottom at furnace foundation (7);
E, top body of heater (5) is descended and be connected with new furnace bottom on furnace foundation (7);
Top body of heater in described steps A hoists by hoisting appliance and realizes by the following method: set up support around blast furnace, top installation bracket (10) at top body of heater (5), top at support arranges hoisting appliance, by hoisting appliance jacking bracket (10), top body of heater (5) is hoisted.
2. method for replacing bottom of blast furnace as claimed in claim 1, it is characterized in that: in steps A, described support comprises rack body (4), also comprise the support beam structure (3) that is connected with rack body (4), the top of support beam structure (3) is connected with the Tiebar structure (2) that is connected with rack body (4), the below of support beam structure (3) is connected be used to the Eight characters pole structure (1) that supports described support beam structure (3), and described hoisting appliance is arranged on support beam structure (3).
3. method for replacing bottom of blast furnace as claimed in claim 1 is characterized in that: the hoisting appliance in described steps A comprises along circumferential uniform 3 jacking apparatus (11) of top body of heater at least.
4. method for replacing bottom of blast furnace as claimed in claim 3, it is characterized in that: described jacking apparatus (11) is hydro-cylinder.
5. method for replacing bottom of blast furnace as claimed in claim 3 is characterized in that: be positioned at each jacking apparatus place and all be provided with adjustable for height bracket support structure (12) on support.
6. method for replacing bottom of blast furnace as claimed in claim 5, is characterized in that: N the cushion block of described bracket support structure (12) for stacking.
7. method for replacing bottom of blast furnace as claimed in claim 3 is characterized in that: described each jacking apparatus (11) locates all to be provided with the indicating unit that is used to indicate top body of heater one side displacement vertically corresponding to jacking apparatus (11).
8. method for replacing bottom of blast furnace as claimed in claim 7, it is characterized in that: described indicating unit comprises the scale (16) that vertically extends on the support of the pointer (15) that is arranged on carriage (10) and the outside that is arranged on jacking apparatus, and described pointer (15) points to described scale (16).
9. method for replacing bottom of blast furnace as claimed in claim 1, it is characterized in that: the method for dismounting of the furnace bottom in described step B (6) is: first open a discharge through hole (13) on the sidewall of furnace bottom (6), then drive excavation machinery (14) into furnace bottom inside by discharge through hole (13), by excavation machinery (14), furnace bottom (6) is removed from inside to outside successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110333542 CN102409120B (en) | 2011-10-28 | 2011-10-28 | Blast Furnace Bottom Replacement Method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110333542 CN102409120B (en) | 2011-10-28 | 2011-10-28 | Blast Furnace Bottom Replacement Method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102409120A CN102409120A (en) | 2012-04-11 |
| CN102409120B true CN102409120B (en) | 2013-06-12 |
Family
ID=45911459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110333542 Active CN102409120B (en) | 2011-10-28 | 2011-10-28 | Blast Furnace Bottom Replacement Method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102409120B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105821900A (en) * | 2015-01-05 | 2016-08-03 | 上海宝冶集团有限公司 | Super large blast furnace concrete bed online precise open tunnel method |
| CN108642221A (en) * | 2018-08-01 | 2018-10-12 | 本钢板材股份有限公司 | A kind of super-huge blast furnace overhaul quickly takes off furnace system and method |
| CN114131291B (en) * | 2021-11-13 | 2024-02-02 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Integral replacement method for middle section deformation and cracking of furnace body of iron-smelting blast furnace |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59122713A (en) * | 1982-12-28 | 1984-07-16 | Toshiba Corp | Load control device for complex cycle electric power plant |
| JPH05222420A (en) * | 1991-02-27 | 1993-08-31 | Kawasaki Steel Corp | Method for intermediate reconstruction of blast furnace |
| JP3033889B2 (en) * | 1996-09-05 | 2000-04-17 | 川崎製鉄株式会社 | Construction method of blast furnace bottom plate |
| JP3110684B2 (en) * | 1996-09-20 | 2000-11-20 | 川崎製鉄株式会社 | Dismantling method of blast furnace bottom |
| JP3858358B2 (en) * | 1997-07-04 | 2006-12-13 | Ｊｆｅスチール株式会社 | Dismantling method of blast furnace hearth contents |
| JP4592860B2 (en) * | 2000-01-31 | 2010-12-08 | 山九株式会社 | Blast furnace component installation method |
| KR100478107B1 (en) * | 2000-07-13 | 2005-03-24 | 산큐가부시끼가이샤 | Dismemberment method of the bottom of the shaft furnace |
| CN102146488B (en) * | 2010-02-09 | 2012-07-25 | 上海宝冶建设有限公司 | Modularized and integrative disassembling and installing methods for blast furnace |
| CN101899540B (en) * | 2010-07-29 | 2012-02-29 | 中国一冶集团有限公司 | Construction method for overhauling blast furnace and keeping furnace shell and cooling wall |
| CN101984078B (en) * | 2010-12-01 | 2012-01-11 | 中国二冶集团有限公司 | Installation method for quickly removing and replacing middle-section furnace casing of large blast furnace |
-
2011
- 2011-10-28 CN CN 201110333542 patent/CN102409120B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102409120A (en) | 2012-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201694756U (en) | Ladle lifting device driven by hydraulic cylinder | |
| CN204255832U (en) | Crab-bolt pullout tests charger | |
| CN104032678A (en) | H-shaped tower column inner force adjustable temporary cross supporting structure and construction method thereof | |
| CN102409120B (en) | Blast Furnace Bottom Replacement Method | |
| CN101284628A (en) | Hoisting method for framework of large tonnage pressing machine | |
| CN109202411B (en) | Hydraulic cylinder copper bush replacing process of quick forging equipment | |
| CN107502690A (en) | A kind of point of device and replacing options with integral replacing last furnace shell | |
| CN102409119B (en) | Deviation-correcting and resetting method for blast furnace body | |
| CN104878146B (en) | Construction method for replacing corrugated compensator on top of gravity dust collector | |
| CN101580214A (en) | Hydraulic lifting method for large-scale equipment | |
| CN103342321A (en) | Integral replacing and hoisting method of steam generator of in-service nuclear power plant | |
| CN102296959B (en) | Electric walking shaft formwork supporting system | |
| CN201713528U (en) | Distribution chute overhauling device | |
| CN201645413U (en) | Simple gin-pole mechanism for demolishing internal climbing tower crane | |
| CN204639569U (en) | Novel bearing replacer | |
| CN106481967B (en) | A kind of installation method of rubber diaphragm gas chamber | |
| CN207330971U (en) | A kind of point of device with integral replacing last furnace shell | |
| CN102494239A (en) | Method for installing thin oil sealed dry-type gas tank | |
| CN107022956B (en) | A kind of bridge pier column steel form climbing system and its implementation method | |
| CN204148500U (en) | A kind of walk by table frame | |
| CN106758826A (en) | A kind of apparatus and method for removing dragging suspension basket for overall decentralization | |
| CN203022640U (en) | Dual-purpose steel headframe for shaft sinking and production of vertical shaft of mine | |
| CN104561440A (en) | Construction method for installing backing ring and furnace shell of converter | |
| CN206328067U (en) | Movable draining platform | |
| CN201358267Y (en) | Installation rack of revolving furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |