CN102353264A - Masonry method for ignition furnace lining - Google Patents
Masonry method for ignition furnace lining Download PDFInfo
- Publication number
- CN102353264A CN102353264A CN2011102525922A CN201110252592A CN102353264A CN 102353264 A CN102353264 A CN 102353264A CN 2011102525922 A CN2011102525922 A CN 2011102525922A CN 201110252592 A CN201110252592 A CN 201110252592A CN 102353264 A CN102353264 A CN 102353264A
- Authority
- CN
- China
- Prior art keywords
- furnace
- stones
- prefabricated
- masonry
- laying bricks
- Prior art date
Links
- 239000011449 bricks Substances 0.000 claims description 38
- 239000011159 matrix materials Substances 0.000 claims description 23
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- 238000010276 construction Methods 0.000 abstract description 26
- 238000005516 engineering processes Methods 0.000 description 9
- 238000005245 sintering Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 8
- 238000000034 methods Methods 0.000 description 8
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- 229910000831 Steel Inorganic materials 0.000 description 4
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- 239000000463 materials Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000725 suspensions Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004449 solid propellant Substances 0.000 description 3
- 238000009435 building construction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000007789 gases Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000010410 layers Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 241001417490 Sillaginidae Species 0.000 description 1
- 281000158604 Steel mill companies 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound 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Abstract
Description
Technical field
The present invention is mainly concerned with the manufacturing field of sintering process equipment, refers in particular to a kind of building method of ignition furnace furnace lining.
Background technology
In modern times in the sintering process process; Ignition furnace is used to mix surface hot strip flame is provided; Make solid fuel wherein fire burns; And make top layer compound sintering under ignition furnace high-temperature flue gas and solid fuel ignition exothermic effects; The heat that provides sufficient oxygen amount that the top layer is put aside through the air exhauster exhausting is passed to down one deck compound simultaneously, thereby impels down the solid fuel of one deck to burn away to make sintering process to carry out rapidly downwards and then accomplish sintering process.
In ignition furnace construction and installation process, building by laying bricks or stones of refractory lining is the most complicated, also is the most key link.Through building refractory material by laying bricks or stones, can form the ignition furnace furnace lining structure that has heat insulation, insulation, retaining fire, strengthens sintering effect in steel structure frame inside.When building by laying bricks or stones, to select different anti-materials for use and build means by laying bricks or stones according to the different working condition.According to operating temperature, the temperature stress of body of heater, bear the characteristics that factors such as loading, mechanical damage and chemical erosion take into full account masonry work, the correct selection.Just can make ignition furnace obtain high yield, high-quality, low consumed effect aborning.This shows that furnace lining structure is the core of whole ignition furnace structure, the construction method of furnace lining directly influences the service life of ignition furnace, also affects the ignition furnace construction speed simultaneously, and even influences the maintenance downtime of whole sintering machine.
The furnace lining structure of ignition furnace is divided into three parts: side wall is built by laying bricks or stones, beam is built by laying bricks or stones and furnace roof.
Traditional ignition furnace furnace lining has two kinds of construction masonry methods: integrated poured method and integral prefabricated method.
Integrated poured method: like Fig. 1, Fig. 2 and shown in Figure 3, all the ignition furnace furnace lining forms by the amorphous refractory cast-in-site.When construction, a good template is poured the anti-material of the indefinite form that stirs in proportion wherein into and rapping earlier, and maintenance afterwards 24 to 48 hours after material feeding to be poured has certain intensity, can the demoulding get into next step construction stage.Like Fig. 1, shown in 3, existing beam 9 and existing furnace roof 10 all have part to ride on the existing side wall 11 along the left and right end portions perpendicular to the chassis traffic direction, and existing furnace roof 10 has part to ride on the existing beam 9 in the end, front and back along the chassis traffic direction.This structure can prolong the life-span of furnace lining through the mode that makes existing side wall 11 and existing beam 9 loads.---beam---furnace roof---furnace lining baking that because the restriction of this structure, integrated poured method sequence of construction must be side wall.The furnace lining overall performance of constructing out through integrated poured method is good, and intensity is higher, can guarantee long service life.
Integral prefabricated method: like Fig. 4, Fig. 5 and shown in Figure 6, all the ignition furnace furnace lining constitutes by prefabricated refractory brick body.When construction, only need be fixed in refractory precast block in the ignition furnace steel structure frame with the mode of hanging through existing suspension ring 12 provided thereon and get final product.Be provided with open slot between preformed bricks and the preformed bricks, after installing preformed bricks, need in groove, to pour into a mould amorphous refractory, to strengthen the furnace lining sealing property.Whole building process need not toast and can put into production, and the construction of side wall, beam and furnace roof three phases can interlock and carry out, the regulation order.It is tighter to be well suited for some duration, the engineering higher to schedule requirement.
All there is its shortcoming in these two kinds of building methods of integrated poured method and integral prefabricated method:
One, integrated poured method: because the reason of furnace lining structure, the method need be in strict accordance with side wall the sequence of construction construction of---beam---furnace roof.And side wall approximately needs time of 72h from formwork to the cured form removal in general, and beam approximately needs the time of 72h from formwork to the cured form removal, and furnace roof approximately needs the time of 96h from formwork to the cured form removal, add up to about 240h (10 days) duration.Add the installation of steel construction and space gas pipeline, whole ignition furnace installation period was above 16 days.Even if 24h uninterruptedly constructs, also need about 9 days.And repair envelope time weak point owing to blast furnace in the steel plant; The off-time of whole piece ironmaking production line is often less than a week; The owner will not be for an ignition furnace smelts iron whole piece the production line production time and delays so long, so integrated poured method often can not be adopted by the owner.
Two, integral prefabricated method: compare the construction period of the integral prefabricated method much shorter that then seems with integrated poured method.Because furnace lining is made up of the fireproof prefabricated brick of plural piece, on-the-spot needs hoisted in position, thus its easy construction, short construction period, whole ignition furnace installation period can guarantee in 6 days.But because preformed bricks is impaired in transportation and installation process easily; Generally there is not service life the integrated casting type structure long, and preformed bricks Chang Yinqi making error, can not closely link to each other during installation; Thereby cause bad coal gas and the naked light of emitting of furnace roof part globality, security performance is lower.The part preformed bricks is because weight is excessive, to hang screw rod too much, and requires every screw rod stressed evenly when hanging, thus to the construction technology level requirement of unit in charge of construction also than higher.
In sum, integrated poured method good integrity, lining durability is long, but construction period is long.And integral prefabricated method short construction period, but globality and service life all not as integrated poured method, and the site operation difficulty is higher.
Summary of the invention
The technical problem that the present invention will solve just is: to the technical problem of prior art existence; The present invention provides a kind of furnace lining that can guarantee to have higher globality, can obtain long service life again, and can shorten the masonry method of the ignition furnace furnace lining of on-site construction time.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of masonry method of ignition furnace furnace lining is characterized in that step is:
(1) prefabricated and lifting side wall refractory precast block: carry out prefabricated to the required refractory precast block in the position that joins mutually with beam on the side wall earlier and lift putting in place;
(2) build the matrix and the beam of side wall simultaneously by laying bricks or stones: after the lifting of side wall refractory precast block puts in place, build the matrix and the beam of side wall simultaneously by laying bricks or stones, the matrix of side wall and beam all adopt cast-in-place mode of building by laying bricks or stones to make;
(3) build furnace roof by laying bricks or stones: after side wall and beam maintenance are accomplished by the time, build furnace roof by laying bricks or stones.
As further improvement of the present invention:
Refractory precast block in the said step (1) comprises the prefabricated section matrix, and the end towards the matrix of side wall on the said prefabricated section matrix offers more than one groove.
Said groove is semicircle or triangle or trapezoidal or trapezoidal.
Compared with prior art; The invention has the advantages that: the masonry method of ignition furnace furnace lining of the present invention; Through prefabricated and combination cast-in-site; Realized can installing quickly and easily, change and overhauling of furnace lining, and the furnace lining after installing still has preferable globality, lining durability is short unlike former integrated poured method.
Description of drawings
Fig. 1 is the main TV structure sketch map that the integrated poured method of available technology adopting is built back ignition furnace furnace lining by laying bricks or stones;
Fig. 2 is the plan structure sketch map that the integrated poured method of available technology adopting is built back ignition furnace furnace lining by laying bricks or stones;
Fig. 3 is the side-looking structural representation that the integrated poured method of available technology adopting is built back ignition furnace furnace lining by laying bricks or stones;
Fig. 4 is the main TV structure sketch map that the integral prefabricated method of available technology adopting is built back ignition furnace furnace lining by laying bricks or stones;
Fig. 5 is the plan structure sketch map that the integral prefabricated method of available technology adopting is built back ignition furnace furnace lining by laying bricks or stones;
Fig. 6 is the side-looking structural representation that the integral prefabricated method of available technology adopting is built back ignition furnace furnace lining by laying bricks or stones;
Fig. 7 adopts the inventive method to build the main TV structure sketch map of back ignition furnace furnace lining by laying bricks or stones;
Fig. 8 adopts the inventive method to build the plan structure sketch map of back ignition furnace furnace lining by laying bricks or stones;
Fig. 9 adopts the inventive method to build the side-looking structural representation of back ignition furnace furnace lining by laying bricks or stones;
Figure 10 is the main TV structure sketch map of refractory precast block among the present invention;
Figure 11 is the plan structure sketch map of refractory precast block in the present embodiment;
Figure 12 is the side-looking structural representation of refractory precast block in the present embodiment;
Figure 13 is the sketch map when adopting semicircle single groove structure in the instantiation;
Figure 14 is the sketch map when adopting semicircle many groove structures in the instantiation;
Figure 15 is the sketch map when adopting triangle list groove structure in the instantiation;
Figure 16 is the sketch map when adopting many groove structures of triangle in the instantiation;
Figure 17 is the sketch map when adopt trapezoidal single groove structure in the instantiation;
Figure 18 is the sketch map when adopt trapezoidal many groove structures in the instantiation.
Marginal data:
1, sintering machine center line; 2, outlet end carriage; 3, middle beam; 4, inlet end carriage; 5, the matrix of side wall; 6, refractory precast block; 61, prefabricated section matrix; 62, suspension ring; 63, groove; 7, igniting section furnace roof; 8, soaking zone furnace roof; 9, existing beam; 10, existing furnace roof; 11, existing side wall; 12, existing suspension ring.
The specific embodiment
Below will combine Figure of description and specific embodiment that the present invention is explained further details.
Referring to Fig. 7, Fig. 8, Fig. 9, the masonry method of ignition furnace furnace lining of the present invention the steps include:
(1) prefabricated and lifting refractory precast block 6: earlier carry out prefabricated and lifting puts in place to the required refractory precast block 6 in the position that joins mutually with beam on the side wall, be about to these refractory precast blocks 6 make baked, press drawing position hoisted in position.
(2) build side wall and beam simultaneously by laying bricks or stones: the matrix 5 of side wall and beam all adopt cast-in-place mode of building by laying bricks or stones to make, and side wall is symmetric arrangement along sintering machine center line 1; The matrix 5 of beam and side wall all adopts conventional integrated poured technology to make.In the present embodiment, beam has comprised inlet end carriage 4, middle beam 3 and outlet end carriage 2.To the value volume and range of product of present embodiment central sill, the quantity of the refractory precast block 6 in the step (1) is six; Certainly, this number can increase according to the ignition furnace scale in other concrete application example, and six is minimum, and these prefabricated sections are arranged in the position of handing-over mutually of each root beam and the matrix 5 of side wall respectively.
(3) build furnace roof by laying bricks or stones: after side wall and beam maintenance are accomplished by the time, build furnace roof by laying bricks or stones.Consistent with prior art, this furnace roof has comprised igniting section furnace roof 7 and soaking zone furnace roof 8.
After adopting method of the present invention, the matrix 5 of side wall and beam be formwork simultaneously, and half the time had been saved in cast simultaneously, maintenance simultaneously more in the past.Whole the ignition furnace cycle of building by laying bricks or stones only needs the 72h of side wall and beam building construction to add the 96h of furnace roof building construction, adds up to 168h (7 days); Add the installation of steel construction and space gas pipeline, whole ignition furnace installation period is about 13 days, if can 24h uninterruptedly construct, can guarantee 7 days with interior completion, can satisfy owner's construction period basically.
The present invention is when shortening construction period; Big variation does not take place in the main load-carrying construction of furnace lining; The main load body such as furnace roof, beam and the good part that needs overall sealing performance remain and adopt cast-in-place building by laying bricks or stones, so the service life of furnace lining and security performance are not affected.Because furnace roof and beam all are cast-in-sites, need not large scale prefabricated and hang, so the more integral prefabricated method of construction requirement also greatly reduces.
Referring to Figure 10, Figure 11 and shown in Figure 12; Refractory precast block 6 of the present invention has adopted the groove type specific structure; It comprises prefabricated section matrix 61; Prefabricated section matrix 61 is provided with the suspension ring 62 that are used for lifting; End towards the matrix 5 of side wall on this prefabricated section matrix 61 offers more than one groove 63; Groove 63 is used for cooperating with matrix 5; Can make the cast-in-place part (being the matrix 5 of side wall) of side wall can closely combine, except that the enhanced leaktightness performance, also can prevent the prefabricated section loose shift with prefabricated section matrix 61 parts.In the present embodiment, groove 63 is designed to rectangle, certainly in other embodiment, can be according to actual needs (for example: the varying in size of ignition furnace scale, model are different or the like) can design a plurality of grooves 63, and adopt other shape.
Certainly; Also can be according to actual needs; Employing has the refractory precast block 6 of multi-form groove 63, semicircle single groove structure for example shown in Figure 13, semicircle many groove structures shown in Figure 14, triangle list groove structure shown in Figure 15, many groove structures of triangle shown in Figure 16, trapezoidal single groove structure, trapezoidal many groove structures or the like that fall shown in Figure 180 of falling shown in Figure 17.
Below only be preferred implementation of the present invention, protection scope of the present invention also not only is confined to the foregoing description, and all technical schemes that belongs under the thinking of the present invention all belong to protection scope of the present invention.Should be pointed out that for those skilled in the art some improvement and retouching not breaking away under the principle of the invention prerequisite should be considered as protection scope of the present invention.
Claims (3)
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| CN2011102525922A CN102353264A (en) | 2011-08-30 | 2011-08-30 | Masonry method for ignition furnace lining |
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| CN2011102525922A CN102353264A (en) | 2011-08-30 | 2011-08-30 | Masonry method for ignition furnace lining |
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| CN101429803A (en) * | 2008-12-05 | 2009-05-13 | 重庆大学 | Construction column used for masonry structure and its production method and special precast segment |
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