CN105066701A - Ignition furnace on-line replacement method - Google Patents
Ignition furnace on-line replacement method Download PDFInfo
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- CN105066701A CN105066701A CN201510541610.7A CN201510541610A CN105066701A CN 105066701 A CN105066701 A CN 105066701A CN 201510541610 A CN201510541610 A CN 201510541610A CN 105066701 A CN105066701 A CN 105066701A
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Abstract
The invention relates to the technical field of sintering technologies, in particular to an ignition furnace on-line replacement method. The method comprises the following steps that a support device of a standby ignition furnace is arranged at a position nearby a sintering machine; a furnace body structural frame of the standby ignition furnace, a furnace liner refractory and a furnace front pipeline are assembled on the support device; the furnace liner refractory of the standby ignition furnace is baked by a temporary furnace baking device; the standby ignition furnace is moved from the support device onto a middle ignition furnace rail of the sintering machine; the sintering machine stops running, the original ignition furnace is dismounted from an ignition position; the standby ignition furnace is moved to the ignition position by a traction device; and the standby ignition furnace is connected with a gas pipeline and is started, and the sintering machine is restarted. An ignition furnace non-on-line replacement method in the prior art is replaced by the ignition furnace on-line replacement method, thereby facilitating increasing an ignition furnace replacement speed, shortening an idling period of the sintering machine, and improving the economic benefits.
Description
Technical field
The present invention relates to SINTERING TECHNOLOGY field, particularly relate to a kind of method that ignition furnace is changed online.
Background technology
Sintering process is an important step in ironmaking production flow process, and by high-temperature roasting, sintering rawore powder is transformed into the block sintering deposit of applicable blast furnace, its main purpose is for blast furnace provides iron-smelting raw material.In modern sintering process process, ignition furnace is used to provide hot strip flame to mix surface, make solid fuel ignition wherein, and top layer compound is sintered under ignition furnace high-temperature flue gas and solid fuel ignition exothermic effects, the heat simultaneously providing sufficient oxygen amount to be put aside on top layer by air exhauster exhausting is passed to lower one deck compound, impels the solid fuel of lower one deck to burn away thus sintering process is rapidly to down and carry out and then complete sintering process.
The use working life of ignition furnace is generally 4 ~ 5 years, different according to sintering feed kind and surrounding enviroment severe degree difference.When its working life then, advise preferably immediately carrying out overall overhaul replacing to ignition furnace, otherwise use " overage " stove to produce by force, likely can occur that furnace lining collapses, emit outside flame, the accident such as gas leak, time serious, can life danger be caused.
At present, the replacing options that old-fashioned ignition furnace adopts is non-online replacing method, namely assemble at whole ignition furnace, cast, maintenance, in the construction period of baking molding, sintering machine must be in end-of-life state, until just can resume production after ignition furnace construction, as shown in Figure 1, detailed process is the rear first day of sintering machine stopping production and is removed from ignition of sintering process track by old ignition furnace for second day, 3rd day and within the 4th day, complete the steel structure assembling of new ignition furnace, within 5th day, to the 8th day, space gas Pipe installing and connection are carried out to new ignition furnace, within 9th day to the 13 day, carry out the cast of the resistance to material of furnace lining, fortnight carries out furnace lining maintenance and baking to Ahau, toast rear bleed and enter new ignition furnace, restart sintering machine to put into production.There is following defect in this kind of method:
1, economic benefit is low: because in the whole construction period of ignition furnace (about 15 ~ 20 days), sintering machine all can not be produced, and is huge, with a 360m for its economic loss sintering plant
2sintering machine be example, output hourly is about 468t finished product sintering deposit, calculates according to market price 1000 yuan/t, and the economic loss of 20 days is then 2.25 hundred million yuan.
2, danger coefficient is high: most sintering plant, in order to avoid the above-mentioned economic loss mentioned, takes the method for many device synchronization overhaul, and namely look for a time period sintering machine to stop, all equipment to be repaired starts maintain and replace simultaneously.But so just limit the replacement cycle of ignition furnace, " overage " works to cause some ignition furnace to be had to wait for other equipment rebuildings time, thus increase operational hazards coefficient, on the ignition furnace that operative employee crossed in the life-span, operation is produced, have at any time to be smoked down by coal gas or by burn may;
3, difficulty of construction is large: because the mode of many device synchronization overhaul all taked by most of sintering plant, therefore often ignition furnace is when overhaul construction, and periphery also has other equipment a lot of at synchronous crossed construction, so virtually just increases ignition furnace difficulty of construction.
For above defect, we make every effort to by improvement stove construction method, develop a kind of replacement cycle short, good in economic efficiency, the other prefabricated quick online replacing options of minimum ignition furnace machine and corollary apparatus thereof can be down to sintering machine yield effect, in the hope of making up the defect of prior art.
Therefore, for above deficiency, need a kind of method providing ignition furnace to change online.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention solves the Renewal process complexity of ignition furnace, length consuming time, and cause the sintering machine stopping production cycle long, work progress danger coefficient is large, affects the problem of output and economic benefit.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of method that ignition furnace is changed online, comprising the following steps:
S1, near sintering machine, position arranges the bracing or strutting arrangement of ignition furnace for subsequent use, and the furnace binding framework of ignition furnace for subsequent use, the resistance to material of furnace lining and stokehold pipeline are completed assembling on bracing or strutting arrangement;
S2, to be toasted by the resistance to material of the furnace lining of interim oven baker to ignition furnace for subsequent use;
S3, by ignition furnace for subsequent use from ignition furnace track in the middle part of bracing or strutting arrangement moves to sintering machine;
S4, sintering machine are out of service, are removed by old ignition furnace from ignition location;
S5, by draw-gear, ignition furnace for subsequent use is moved to ignition location;
S6, be connected with gaspipe line by ignition furnace for subsequent use, start ignition furnace for subsequent use, sintering machine resumes operation.
Wherein, in S2 step, set up interim gas pipe hose and from rough gas pipe-line system, draw a road coal gas toast to pass into the resistance to material of furnace lining of described interim oven baker to described ignition furnace for subsequent use.
Wherein, in S5 step, described draw-gear is elevator unit, and described elevator unit applies to described ignition furnace for subsequent use the pulling force being parallel to ignition furnace track in the middle part of described sintering machine by pull rope, makes described ignition furnace for subsequent use move to ignition location.
Wherein, described elevator unit comprises the identical hoist engine of two power, and two described hoist engines are arranged at ignition furnace track both sides in the middle part of sintering machine, are connected with described ignition furnace for subsequent use by pull rope.
Wherein, in S1 step, described bracing or strutting arrangement is interim bearing beam, and the shape of described interim bearing beam is H type, and described ignition furnace for subsequent use is placed on described interim bearing beam, is linked into an integrated entity by civil engineering spandrel girder.
Wherein, in S3 step, by suspender by ignition furnace track in the middle part of described ignition furnace lifting to described sintering machine for subsequent use.
Wherein, described suspender comprises arm, hanger beams and hanger, and described hanger is arranged at the middle part of described hanger beams, is connected with factory building overhead traveling crane, the middle part of two described arms is connected with described hanger beams two ends and vertical with described hanger beams respectively, and the two ends of described arm are connected with described ignition furnace for subsequent use.
Wherein, in S1 step, described bracing or strutting arrangement is scaoffold, and described scaoffold to be arranged in the middle part of described sintering machine on ignition furnace track and to be positioned at above the chassis of described sintering machine medium position.
Wherein, on the lower surface of the top board of described scaoffold and the chassis of described sintering machine medium position, the difference in height on edge is at least 1m.
Wherein, in S3 step, described ignition furnace for subsequent use transferred on ignition furnace track in the middle part of described sintering machine by jack, described jack to be arranged in the middle part of described scaoffold and described sintering machine between ignition furnace track, described jack upper end contacts with the top board lower surface of described scaoffold, and described jack lower end contacts with the upper surface of the ignition furnace track in the middle part of described sintering machine.
(3) beneficial effect
Technique scheme tool of the present invention has the following advantages: the present invention arranges ignition furnace for subsequent use by position near sintering machine, and complete the furnace binding frame assembled of standby electricity stove in advance, the baking of the resistance to material of furnace lining and the installation of stokehold pipeline, again by ignition furnace for subsequent use from ignition furnace track in the middle part of bracing or strutting arrangement moves to sintering machine, so that when sintering machine is out of service, standby electricity stove can be moved to ignition location after removing by old ignition furnace in time, recover sintering machine running after gaspipe line connects to produce, the non-online ignition furnace replacing method changing prior art is online replacing method, be conducive to promoting the speed changing ignition furnace, shorten the off-time of sintering machine, increase economic efficiency, avoid ignition furnace to wait for that other equipment rebuildings time " overage " work increases the situation of operational hazards coefficient simultaneously, improve the security changing ignition furnace work, instead of the mode of device synchronization overhaul in prior art, reduce the difficulty of construction that ignition furnace is changed.
The technical characteristic of the technical problem solved except the present invention described above, the technical scheme of formation and have the technical characteristic of these technical schemes to bring advantage except, the advantage that other technologies feature of the present invention and these technical characteristics bring, will further illustrate by reference to the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the flow chart changing ignition furnace in prior art;
Fig. 2 is the flow chart of the method that the other prefabricated ignition furnace of machine of the embodiment of the present invention one is changed online;
Fig. 3 is the apparatus structure front view of the method that the other prefabricated ignition furnace of machine of the embodiment of the present invention one is changed online;
Fig. 4 is the apparatus structure top view of the method that the other prefabricated ignition furnace of machine of the embodiment of the present invention one is changed online;
Fig. 5 is the installation process schematic diagram of the step 5 of the method that the other prefabricated ignition furnace of machine of the embodiment of the present invention one is changed online;
Fig. 6 is the hanger structure front view of the method that the other prefabricated ignition furnace of machine of the embodiment of the present invention one is changed online;
Fig. 7 is the hanger structure left view of the method that the other prefabricated ignition furnace of machine of the embodiment of the present invention one is changed online;
Fig. 8 is the hanger structure top view of the method that the other prefabricated ignition furnace of machine of the embodiment of the present invention one is changed online;
Fig. 9 is the flow chart of the method that the scaoffold formula ignition furnace of the embodiment of the present invention two is changed online;
Figure 10 is the structure drawing of device of the method that the scaoffold formula ignition furnace of the embodiment of the present invention two is changed online;
Figure 11 is the ignition furnace structure chart for subsequent use of the method that the scaoffold formula ignition furnace of the embodiment of the present invention two is changed online;
Figure 12 is the installation process schematic diagram of the step 5 of the method that the scaoffold formula ignition furnace of the embodiment of the present invention two is changed online.
In figure: 1: old ignition furnace; 2: interim gas pipe hose; 3: gas piping; 4: interim oven baker; 5: interim bearing beam; 6: ignition furnace for subsequent use; 7: ignition furnace track in the middle part of sintering machine; 8: hoist engine; 9: pull rope; 10: suspender; 11: scaoffold; 12: jack; 13: chassis; 101: arm; 102: hanger beams; 103: hanger.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
Embodiment 1
The method that a kind of ignition furnace provided by the invention is changed online, comprises the following steps:
S1, near sintering machine, position arranges the bracing or strutting arrangement of ignition furnace for subsequent use, and the furnace binding framework of ignition furnace for subsequent use, the resistance to material of furnace lining and stokehold pipeline are completed assembling on bracing or strutting arrangement;
S2, to be toasted by the resistance to material of the furnace lining of interim oven baker to ignition furnace for subsequent use;
S3, by ignition furnace for subsequent use from ignition furnace track in the middle part of bracing or strutting arrangement moves to sintering machine;
S4, sintering machine are out of service, are removed by old ignition furnace from ignition location;
S5, by draw-gear, ignition furnace for subsequent use is moved to ignition location;
S6, be connected with gaspipe line by ignition furnace for subsequent use, start ignition furnace for subsequent use, sintering machine resumes operation.
In above-described embodiment 1, by position near sintering machine, ignition furnace for subsequent use is set, and complete the furnace binding frame assembled of standby electricity stove in advance, the baking of the resistance to material of furnace lining and the installation of stokehold pipeline, again by ignition furnace for subsequent use from ignition furnace track in the middle part of bracing or strutting arrangement moves to sintering machine, so that when sintering machine is out of service, standby electricity stove can be moved to ignition location after removing by old ignition furnace in time, recover sintering machine running after gaspipe line connects to produce, the non-online ignition furnace replacing method changing prior art is online replacing method, be conducive to promoting the speed changing ignition furnace, shorten the off-time of sintering machine, increase economic efficiency, avoid ignition furnace " overage " works in order to wait for other equipment rebuildings time simultaneously, increase the situation of operational hazards coefficient, improve the security changing ignition furnace work, replace the mode of device synchronization overhaul in prior art, reduce the difficulty of construction that ignition furnace is changed.。
Preferably, present embodiments provide the method that the other prefabricated ignition furnace of a kind of machine is changed online, as Fig. 2, shown in Fig. 3 and Fig. 4, concrete grammar flow process is: near sintering machine, position completes body of heater 6 steel structure assembling for subsequent use, the resistance to material cast of furnace lining, furnace lining maintenance and baking, again standby electricity stove 6 is lifted on ignition furnace track 7 in the middle part of sintering machine, carry out ignition furnace 6 stokehold for subsequent use space gas pipeline 3 to install, after above step completes, old ignition furnace 1 is removed by sintering machine stopping production first day, second day ignition furnace 6 for subsequent use draws rear new and old space gas pipeline 3 in place and docks pressure testing, finally introduce coal gas, sintering machine resumes production.
Concrete, in S1 step, bracing or strutting arrangement is interim bearing beam 5, and the shape of interim bearing beam 5 is H type, and ignition furnace 6 for subsequent use is placed on interim bearing beam 5, is linked into an integrated entity by civil engineering spandrel girder.Due to nearly 100 tons of ignition furnace for subsequent use 6 overall weight that machine is other prefabricated, therefore original soil Jianping table top bearing capacity is inadequate, needs to strengthen.Interim bearing beam 5 is made up of two H profile steel, its objective is and connects integral by some civil engineering spandrel girders by interim bearing beam 5, strengthen the bearing capacity of civil engineering flat surface with this.
In S2 step, set up interim gas pipe hose 2 and from rough gas pipe-line system, draw a road coal gas toast to pass into the resistance to material of furnace lining of interim oven baker 4 to ignition furnace 6 for subsequent use.
As shown in Fig. 6, Fig. 7 and Fig. 8, in S3 step, ignition furnace 6 for subsequent use lifted on ignition furnace track 7 in the middle part of sintering machine by suspender 10.Wherein, suspender 10 comprises arm 101, hanger beams 102 and hanger 103, and hanger 103 is arranged at the middle part of hanger beams 102, is connected with factory building overhead traveling crane, the middle part of two arms 101 is connected with hanger beams 102 two ends and vertical with hanger beams 102 respectively, and the two ends of arm 101 are connected with ignition furnace 6 for subsequent use.Due to ignition furnace for subsequent use 6 body of heater after baking, its steel construction, furnace lining and stokehold pipeline gross weight about 100 tons, therefore need independent design point stove special hanger 10, to ensure that factory building overhead traveling crane can steadily position lifting be to ignition furnace track 7 in the middle part of sintering machine near sintering machine by ignition furnace for subsequent use safely, suspender 10 is made up of arm 101, hanger beams 102 and hanger 103 3 parts.Each performs its own functions for three parts: arm 101 is responsible for closely being connected with object to be hung and is applied pulling force to it, and hanger beams 102 is responsible for connecting arm 101 and hanger 103, and keeps the object of the process of hanging to balance, and responsible the hook with overhead traveling crane of hanger 103 is closely connected.
As shown in Figure 5, in S5 step, draw-gear is elevator unit, and elevator unit applies to ignition furnace 6 for subsequent use the pulling force being parallel to ignition furnace track 7 in the middle part of sintering machine by pull rope 9, makes ignition furnace 6 for subsequent use move to ignition location.Hoist engine 8, two hoist engines 8 that elevator unit comprises two power identical are arranged at ignition furnace track 7 both sides in the middle part of sintering machine, and steel wire rope selected by pull rope 9, is connected with ignition furnace 6 for subsequent use by steel wire rope.After old ignition furnace 1 all dismounting, ignition furnace 6 for subsequent use needs to be towed to ignition furnace on-station position, therefore need the elevator unit that is made up of the hoist engine 8 that two power is identical, every platform hoist engine 8 respectively applies to the side of ignition furnace 8 body of heater for subsequent use the pulling force being parallel to ignition furnace track 7 in the middle part of sintering machine by steel wire rope, makes ignition furnace 6 for subsequent use can move to ignition location from Hoisting Position smoothly.Wherein position I is the position of ignition furnace 6 for subsequent use when machine is other prefabricated, and position II is that ignition furnace 6 for subsequent use lifts the position of lighting a fire on track 7 in the middle part of sintering machine, and position III is the ignition location that ignition furnace 6 for subsequent use is towed to.
Embodiment 2
Preferably, the method that a kind of scaoffold formula ignition furnace that the present embodiment provides is changed online, as Fig. 9, Figure 10, shown in Figure 11, concrete grammar flow process is: first in the middle part of sintering machine, scaoffold 11 built by ignition furnace track 7, scaoffold 11 completes ignition furnace 6 steel structure assembling for subsequent use, the resistance to material cast of furnace lining, furnace lining maintenance and baking, remove scaoffold 11 afterwards, ignition furnace 6 for subsequent use to be dropped in the middle part of sintering machine with jack 12 and complete ignition furnace 6 stokehold for subsequent use space gas pipeline 3 after on ignition furnace track 7 and install, old ignition furnace 1 is removed by sintering machine stopping production first day, ignition furnace 6 for subsequent use was drawn to ignition location in second day, after new and old space gas pipeline 3 docks pressure testing, introduce coal gas, sintering machine is gone into operation.
Be with above-described embodiment 1 difference, in S1 step, bracing or strutting arrangement is scaoffold 11, and scaoffold 11 to be arranged in the middle part of sintering machine on ignition furnace track 7 and to be positioned at above the chassis 13 of sintering machine medium position.Wherein, on the top board lower surface of scaoffold 11 and the chassis 13 of sintering machine medium position, the difference in height on edge is at least 1m, so that when assembling ignition furnace 6 for subsequent use on scaoffold 11, sintering function is below work as usual.
In S3 step, ignition furnace 6 for subsequent use transferred on ignition furnace track 7 in the middle part of sintering machine by jack 12, jack 12 to be arranged in the middle part of scaoffold 11 and sintering machine between ignition furnace track 7, jack 12 upper end contacts with the top board lower surface of scaoffold 11, and jack 7 lower end contacts with the upper surface of ignition furnace track 7 in the middle part of sintering machine.Due in the later stage, scaoffold 11 needs to be disassembled, and ignition furnace 6 for subsequent use needs jack 12 steadily to drop in the middle part of sintering machine on ignition furnace track 7.Therefore jack 12 is set up between ignition furnace track 7 in the middle part of scaoffold 11 and sintering machine.
As shown in figure 12, in S5 step, position II is that ignition furnace for subsequent use drops to the position of lighting a fire on track 7 in the middle part of sintering machine, and position III is the ignition location that ignition furnace 6 for subsequent use is towed to.
In sum, the present invention arranges ignition furnace for subsequent use by position near sintering machine, and complete the furnace binding frame assembled of standby electricity stove in advance, the baking of the resistance to material of furnace lining and the installation of stokehold pipeline, again by ignition furnace for subsequent use from ignition furnace track in the middle part of bracing or strutting arrangement moves to sintering machine, so that when sintering machine is out of service, standby electricity stove can be moved to ignition location after removing by old ignition furnace in time, recover sintering machine running after gaspipe line connects to produce, the non-online ignition furnace replacing method changing prior art is online replacing method, be conducive to promoting the speed changing ignition furnace, shorten the off-time of sintering machine, increase economic efficiency, avoid ignition furnace " overage " works in order to wait for other equipment rebuildings time simultaneously, increase the situation of operational hazards coefficient, improve the security changing ignition furnace work, replace the mode of device synchronization overhaul in prior art, reduce the difficulty of construction that ignition furnace is changed.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the method changed online of ignition furnace, is characterized in that: comprise the following steps:
S1, near sintering machine, position arranges the bracing or strutting arrangement of ignition furnace for subsequent use, and the furnace binding framework of ignition furnace for subsequent use, the resistance to material of furnace lining and stokehold pipeline are completed assembling on bracing or strutting arrangement;
S2, to be toasted by the resistance to material of the furnace lining of interim oven baker to ignition furnace for subsequent use;
S3, by ignition furnace for subsequent use from ignition furnace track in the middle part of bracing or strutting arrangement moves to sintering machine;
S4, sintering machine are out of service, are removed by old ignition furnace from ignition location;
S5, by draw-gear, ignition furnace for subsequent use is moved to ignition location;
S6, be connected with gaspipe line by ignition furnace for subsequent use, start ignition furnace for subsequent use, sintering machine resumes operation.
2. the method changed online of ignition furnace according to claim 1, it is characterized in that: in S2 step, set up interim gas pipe hose and from rough gas pipe-line system, draw a road coal gas toast to pass into the resistance to material of furnace lining of described interim oven baker to described ignition furnace for subsequent use.
3. the method changed online of ignition furnace according to claim 1, it is characterized in that: in S5 step, described draw-gear is elevator unit, described elevator unit applies to described ignition furnace for subsequent use the pulling force being parallel to ignition furnace track in the middle part of described sintering machine by pull rope, makes described ignition furnace for subsequent use move to ignition location.
4. the method changed online of ignition furnace according to claim 3, it is characterized in that: described elevator unit comprises the identical hoist engine of two power, two described hoist engines are arranged at ignition furnace track both sides in the middle part of sintering machine, are connected with described ignition furnace for subsequent use by pull rope.
5. the method that the ignition furnace according to claim 1-4 any one is changed online, it is characterized in that: in S1 step, described bracing or strutting arrangement is interim bearing beam, the shape of described interim bearing beam is H type, described ignition furnace for subsequent use is placed on described interim bearing beam, is linked into an integrated entity by civil engineering spandrel girder.
6. the method changed online of ignition furnace according to claim 5, is characterized in that: in S3 step, by suspender by ignition furnace track in the middle part of described ignition furnace lifting to described sintering machine for subsequent use.
7. the method changed online of ignition furnace according to claim 6, it is characterized in that: described suspender comprises arm, hanger beams and hanger, described hanger is arranged at the middle part of described hanger beams, be connected with factory building overhead traveling crane, the middle part of two described arms is connected with described hanger beams two ends and vertical with described hanger beams respectively, and the two ends of described arm are connected with described ignition furnace for subsequent use.
8. the method that the ignition furnace according to claim 1-4 any one is changed online, it is characterized in that: in S1 step, described bracing or strutting arrangement is scaoffold, and described scaoffold to be arranged in the middle part of described sintering machine on ignition furnace track and to be positioned at above the chassis of described sintering machine medium position.
9. the method changed online of ignition furnace according to claim 8, is characterized in that: on the lower surface of the top board of described scaoffold and the chassis of described sintering machine medium position, the difference in height on edge is at least 1m.
10. the method changed online of ignition furnace according to claim 9, it is characterized in that: in S3 step, by jack, described ignition furnace for subsequent use is transferred on the ignition furnace track in the middle part of described sintering machine, described jack is arranged between the ignition furnace track in the middle part of described scaoffold and described sintering machine, described jack upper end contacts with the top board lower surface of described scaoffold, and described jack lower end contacts with the upper surface of the ignition furnace track in the middle part of described sintering machine.
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| CN201510541610.7A CN105066701A (en) | 2015-08-28 | 2015-08-28 | Ignition furnace on-line replacement method |
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| CN201510541610.7A CN105066701A (en) | 2015-08-28 | 2015-08-28 | Ignition furnace on-line replacement method |
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| CN114518037A (en) * | 2022-02-17 | 2022-05-20 | 广东韶钢松山股份有限公司 | Method for overhauling ignition furnace of sintering machine and novel ignition furnace |
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Application publication date: 20151118 |