CN204286101U - Refractory fiber furnace lining structure - Google Patents
Refractory fiber furnace lining structure Download PDFInfo
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- CN204286101U CN204286101U CN201420663743.2U CN201420663743U CN204286101U CN 204286101 U CN204286101 U CN 204286101U CN 201420663743 U CN201420663743 U CN 201420663743U CN 204286101 U CN204286101 U CN 204286101U
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Abstract
The utility model discloses a kind of refractory fiber furnace lining structure, described refractory fiber furnace lining structure is laid in furnace wall inner surface of steel plate, described refractory fiber furnace lining structure is inwardly equipped with nano heat-insulating insulation flaggy, alumina silicate fibre blanket layer, fibrage and thermal protection layer successively from furnace wall inner surface of steel plate, and the thickness of described refractory fiber furnace lining structure is 300 ~ 350mm.The utility model provides that a kind of structure is simple, easy to make, heat-proof quality is excellent, the protection of fibre furnace lining hot side is reliable, with low cost, long service life, serviceability temperature can reach the sheet billet roller hearth type heating furnace entire fibre lining structure of 1300 DEG C.
Description
Technical field
The utility model relates to industrial furnace refractory fiber furnace lining structure, is specifically related to the refractory fiber furnace lining structure of a kind of CSP roller hearth type heating furnace or continuous annealing furnace.
Background technology
Roller-bottom type tunnel heating furnace is as important pivot sheet billet continuous casting and rolling production line connecting conticaster and rolling operation line, and it mainly contains three functions:
1. the heating of slab and soakage function: receive the high temperature slab that casting machine is produced continuously. after heating and soaking, supply the sheet billet that milling train meets quality requirement in time:
2. pooling feature: when milling train normally produces the roller that changes jobs. or upstream device temporary derangement can not rolled slab time roller at the bottom of stove still can accept slab within the regular hour, rise and regulate cushioning effect, namely " flexibility " buffering link of stove at the bottom of roller is added between casting machine and milling train in " rigidity ", continuous casting and rolling technology artistic skill is carried out smoothly, and this is that current sheet billet realizes continuous casting and rolling and the key of steady production;
3. rhythm of production is regulated, the pulling rate of conticaster slab is 2.0 ~ 6.0m/min, and the slab biting speed of first milling train is 12.0 ~ 15.6m/min, maximal rate 30m/min, the difference of these two kinds of speed, at the bottom of main roller rest, stove regulates, and the speed of furnace roller, between 2 ~ 65m/min, can regulate the rhythm of production of casting machine and milling train effectively.
Two overlength roller-bottom type tunnel heating furnaces are all equipped with in order to effectively meet above-mentioned functions, after all sheet billet continuous casting and rolling production lines (comprising CSP technique, ISP technique, FTSC technique, CONROLL technique, QSP technique etc.) conticaster in the world at present.Document " intercalation osmanthus rosy clouds; Guan Wei; silicon steel CSP engineering roller hearth soaking furnace technical characterstic; industrial furnace; 2011; No6, p18-20 " report straight-through roller-bottom type tunnel heating furnace overview in the CSP engineering of certain steel mill domestic construction operation in 2007; it is equipped with two straight-through roller-bottom type tunnel heating furnaces after conticaster; wherein, and outlet is just called A line to the roller-bottom type tunnel heating furnace of milling train. and another seat is called B line, the long 260.7m of A line oven; the long 245.9m of B line oven, directly sends into mill milling after entering the heating of plate blank of A line.Enter by two-wire swinging operation after the heating of plate blank of B line, A line end of being made a gift to someone by the steel billet of B line end, then sends into mill milling, the connection of two heating furnaces adopts swing mode, hunting period short (single pendulum 30S, one-period 90S), swing mechanism simple structure, synchronism is good.In order to realize heating cycles different within the scope of heating furnace effective length, heating furnace is divided into multiple functional section and temperature-controlled area, and wherein, A line is divided into three sections of 10 temperature-controlled areas, and B line is divided into two sections of 9 temperature-controlled areas.In order to adapt to the change of pulling base multi items specification and pulling speed of continuous casting into stove, require that stove thermal inertia is little, can timely adjusting furnace temperature as required, zirconium type refractory fibre " Z " the shape module that contains that heating furnace activity furnace roof in tunnel is 1427 DEG C with the first half side wall liner employing classification temperature crossing more than steel wire 150mm adds the aluminium oxide fibre overlaying block form that temperature of classifying is 1600 DEG C, heat insulation layer employing classification temperature is high-purity type alumina silicate fibre blanket of 1050 DEG C, other zone furnace serves as a contrast as light weight castable refractory layer adds high-purity type alumina silicate fibre blanket insulating layer structure that classification temperature is 1050 DEG C within the walls, to meet the serviceability requirement that maximum heating temperature is 1300 DEG C.But according to the finding to certain steel mill's actual production situation, find that aluminium oxide fibre overlaying interblock shrinkage joint is large, veneering module tilts along shrinkage joint unsticking and even comes off, simultaneously, veneering module come off region containing zirconium type refractory fibre " Z " shape intermodule shrink gap reach as high as more than 10mm, furnace lining heat-proof quality declines to a great extent, cause furnace wall surface temperature sharply to rise, be up to more than 200 DEG C, considerably beyond 80 DEG C of designing requirement.Document " Zhang Yudao, Yuan Zhanmin, Li Huichao etc.; HanGang CSP Heating Furnace transformation and process optimization; steel research journal; 2005; supplementary issue; P147-150 ", which describe the overview of Handan iron company CSP heating furnace, refractory material transformation, production technology optimization and practice, wherein, heating furnace furnace wall refractory material is except furnace bottom is low cement And High-strength Castable Refractories, and furnace roof, furnace wall are all fibre module, and the main specifications of fibre module liner is 305mm × 305mm × 275mm, adopt crisscross mode to arrange installation, riveting method is chute-type structure.
The problem of following several respects is there is in actual production:
(1) under high temperature action, the contraction front of fibre module is many, and shrink serious at the cut surface of each module, cause the gap of appearance 5 ~ 10mm, insulation effect is poor, and furnace wall surface temperature raises (bringing up to about 100 DEG C by 80 DEG C that design);
(2) maintenance is large.After used a period of time, must stuff up a crack work be carried out to the gap occurred between module, plug the gap to ensure insulation effect, cause thus to produce and pause;
(3) fibre module is combined not compact with furnace wall backing.Module and slide bar fit together in advance, and chute is fixed on furnace shell by screw rod, and slide bar slides into chute and gets final product installation module.In the installation process of reality, if chute is pressed backing is too tight, then import very difficult when slide bar is installed, otherwise slide bar imports easily, but combine not compact between module and backing, affect heat insulation and service life;
(4) module around furnace roller hole easily comes off.In use for some time, furnace roller borehole jack damages because of operation reason and autoxidation, hole surrounding module is lost and supports and come off, be unfavorable for that furnace roller is changed online.
For former design Problems existing, propose following modification, that is: the layout of module adopts the large module of soldier's column, and riveting method adopts internally-fixed.Its advantage is:
(1) cut surface (namely contraction front) of all fibres module is arranged together, again with filling up the gap compensated between cut surface because filament contraction occurs after the compression of the tapetum fibrosum of suitable thickness in work progress;
(2) riveting method of internal fixtion is adopted to avoid between fibre module and backing in conjunction with untight situation.First, bolt is welded on furnace shell steel plate in advance, repaves backing blanket; Then, the fibre module with plastic tube is enclosed within bolt, then with special box spanner turn nut, be fixed on furnace wall by the plate be pre-installed in module, module is also fixed thereupon.Such module and backing blanket just combine closely;
(3) under high temperature action, almost not because of the gap that filament contraction produces, maintenance is corresponding minimizing also;
(4) avoid because the damage of furnace roller borehole jack causes fibre module to come off.But in actual production, due to long high-temperature furnace gas effect, fibre furnace lining crystallization contraction fissure with come off, fibrous material erosive wear, the phenomenon such as hot side erosion still constantly occur, is necessary the hot side Protective Research strengthening CSP roller hearth type heating furnace fibre furnace lining.
In the damage protection of entire fibre lining, document " Hou Shiying, ceramic fibre liner surface protection technique, industrial furnace, 2013, No2, PP55-57 " the multianalysis pluses and minuses of domestic and international annealing furnace entire fibre lining, to shrink because of high temperature crystallization for fibre furnace lining and low easily the washing away of intensity is peeled off and mechanical damage and the easy deficiency such as chemical erosion thereof, review conventional fiber surface guard technology both at home and abroad, mainly contain the protection of stainless steel liner plate, surface spraying curing agent, ceramic beaverboard protects, veneer protects, sial cloth protects, the technology such as polycrystalline fibre blanket protection, the various guard technology pluses and minuses of comparative analysis, propose the suggestion of following optimal design: when ceramic fibre is used as industrial furnace liner, designer should according to the kind of stove, structure, internal temperature, furnace air, fuel type, wind speed, vibration etc. various service condition selectivity, economic optimum material, finally determines the kind of furnace lining material, thickness, with the compound of other materials, surfacecti proteon and construction method etc., while as far as possible effectively utilizing ceramic fibre strong point, also to avoid its shortcoming as far as possible, make it really play energy-saving and cost-reducing effect.But above-mentioned fiber hot side guard technology is annealing furnace fibre furnace lining, its serviceability temperature and furnace gas flow velocity are lower than sheet billet roller hearth type heating furnace working condition.
The patent No. is that the Chinese invention patent of ZL200720028104.9 discloses a kind of anti-corrosion ceramic fibre furnace liner, its for furnace gas sulfur-bearing composition easily to furnace lining anchor studs and and the dew point corrosion problem of steel welds, provide a kind of anti-corrosion ceramic fibre furnace liner, comprise the furnace wall steel plate being provided with anchor studs, its technical essential is the surface coating corrosion-inhibiting coating of furnace wall steel plate and anchor studs, this corrosion-inhibiting coating is overall structure, meanwhile, compact high-strength thermal insulation layer and choke layers of foil is set gradually in the outside of corrosion-inhibiting coating; Anchor studs and the dew point corrosion with steel welds thereof is avoided, by the heat-proof quality arranging strengthening furnace lining of compact high-strength thermal insulation layer and choke layers of foil by anticorrosive coat; Additionally provide fibre furnace lining hot side spraying radiation paint simultaneously, by the sintering of coating and fibrous matrix, the enhancing anti-airflow scouring ability of furnace lining and infrared radiation heat transfer ability.Be not difficult to find out the protection of this patented technology mainly for the dew point corrosion of Heat Loss in Oil Refining Heating Furnace high-sulfur combustor furnace gas, although the infrared radiation coating on fibre furnace lining surface has certain surfacecti proteon effect, but because coating layer thickness is thin, protective action is limited, is difficult to meet the barrier propterty requirement under the high temperature of sheet billet roller hearth type heating furnace entire fibre lining and furnace gas fast flush service condition.
Along with domestic and international plain Analyze on Development of Sheet Billet, the continuous expansion of steel grade scope, the maximum heating temperature of sheet billet roller hearth type heating furnace, fired heat duty and inner flue gas of the stove flow velocity also constantly promote, exacerbate the damaged process of roller hearth type heating furnace entire fibre lining, increase heating furnace maintenance and maintenance cost, reduce thermal efficiency of heating furnace, also have impact on the heating quality of sheet billet, production efficiency and comprehensive production cost, constrain effective performance of benefits of production and management.Although Chinese scholars washes away the problem such as to peel off for the ubiquitous hot side high-temperature shrinkage of industrial furnace entire fibre lining, furnace gas carried out the hot side guard technology of serial fibre furnace lining, but ubiquity reliable guard technology serviceability temperature is on the low side, the guard technology that serviceability temperature is high then often can not bear the fast flush of high-temperature furnace gas; This is also on sheet billet roller hearth type heating furnace, also do not have ripe fibre furnace lining hot side guard technology report and the main cause applied why, have impact on giving full play to of the energy-saving effect of entire fibre lining sheet billet roller hearth type heating furnace.
Comprehensive above-mentioned visible, for the damaging problem of sheet billet roller hearth type heating furnace entire fibre lining, because furnace temperature is high, cause fibre furnace lining crystallization contraction and efflorescence, form through shrinkage joint in fibre module contraction front, simultaneously, fiber crystallization causes fiber elastic disappearance, significantly weaken the combination of crystalline fibers and fibre furnace lining matrix, and depart from fibre furnace lining matrix under the large flow velocity souring of furnace gas, cause shrinkage joint constantly to expand, fibre furnace lining thickness is thinning; Although report the hot side guard technology of serial fibre furnace lining at present both at home and abroad, ubiquity reliable guard technology serviceability temperature is on the low side, and the guard technology that serviceability temperature is high then often can not bear the fast flush of high-temperature furnace gas; This is also on sheet billet roller hearth type heating furnace, also do not have ripe fibre furnace lining hot side guard technology report and the main cause applied why, cause in actual production that CSP roller hearth type heating furnace fibre furnace lining crack is large, efflorescence is peeled off seriously, furnace wall surface temperature is high, furnace wall surface radiation loss greatly, the series of problems such as furnace lining service life is short, maintenance cost is high.Thus, be necessary the actual working conditions according to sheet billet roller hearth type heating furnace, carry out the research of tencel furnace lining structure and novel heat-insulation fibre furnace lining guard technology.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides that a kind of structure is simple, easy to make, heat-proof quality is excellent, the protection of fibre furnace lining hot side is reliable, with low cost, long service life, serviceability temperature can reach the CSP roller hearth type heating furnace of 1300 DEG C or the refractory fiber furnace lining structure of continuous annealing furnace.
For achieving the above object, a kind of refractory fiber furnace lining structure designed by the utility model, described refractory fiber furnace lining structure is laid in furnace wall inner surface of steel plate, described refractory fiber furnace lining structure is inwardly equipped with nano heat-insulating insulation flaggy, alumina silicate fibre blanket layer, fibrage and thermal protection layer successively from furnace wall inner surface of steel plate, and the thickness of described refractory fiber furnace lining structure is 300 ~ 350mm.
Further, described nano heat-insulating insulation flaggy adopts thickness to be the sheet material of 5 ~ 10mm.
Again further, described alumina silicate fibre blanket layer employing classification temperature is the alumina silicate fibre blanket of 1260 DEG C, and it is laid in nano heat-insulating insulation flaggy surface, and described alumina silicate fibre blanket layer thickness is 25 ~ 35mm.
Again further, described fibrage adopt classification temperature be 1427 DEG C containing zirconium type refractory fibre, wrong row is arranged in alumina silicate fibre blanket layer surface, and described is 250 ~ 300mm containing zirconium content in zirconium type refractory fibre.
Again further, described thermal protection layer adopts the fiber reinforcement alumina hollow ball heat insulation spray finishing bed of material, its thickness 5 ~ 20mm.
The beneficial effects of the utility model:
The utility model provides that a kind of structure is simple, easy to make, heat-proof quality is excellent, the protection of fibre furnace lining hot side is reliable, with low cost, long service life, serviceability temperature can reach the sheet billet roller hearth type heating furnace entire fibre lining structure of 1300 DEG C.Inside by furnace wall steel plate, form primarily of nano heat-insulating warming plate, alumina silicate fibre blanket, fibre module and thermal protection layer.By the superinsulation performance of nano heat-insulating warming plate, the insulation of reinforcing fiber furnace lining, reduces furnace wall surface heat loss; By the combination of alumina silicate fibre blanket, fibre module, under the condition ensureing furnace lining applied at elevated temperature performance, reduce furnace lining accumulation of heat loss and furnace wall surface radiation loss further; The physical and chemical performance excellent by 10 ~ 20mm thermal protection layer and high-temperature behavior, strengthen the protective action to fibre furnace lining and furnace heat transfer, improve comprehensive stability, fire resistance, the insulation thermal efficiency of furnace lining, extend fibre furnace lining service life, improve the serviceability temperature of fibre furnace lining, meet the instructions for use of furnace temperature 1300 DEG C, reduce sheet billet roller hearth type heating furnace energy consumption.By the removal of classification temperature 1600 DEG C of alumina fibre modules, considerably reduce the cost of manufacture of fibre furnace lining.By the design of above-mentioned furnace lining structure and the reasonable employment of material, effectively overcome conventional sheet billet roller hearth type heating furnace entire fibre lining rapid wear, heat-insulating property declines soon, service life is short, the high deficiency of fibrous material consuming cost.
Accompanying drawing explanation
Fig. 1 is the utility model fibre furnace lining structural representation
In figure: nano heat-insulating insulation flaggy 1, alumina silicate fibre blanket layer 2, fibrage 3, thermal protection layer 4, furnace wall steel plate 5.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, so that those skilled in the art understand.
Embodiment 1
A kind of refractory fiber furnace lining structure, described refractory fiber furnace lining structure is laid in furnace wall steel plate 5 inner surface, described refractory fiber furnace lining structure is inwardly equipped with nano heat-insulating insulation flaggy 1, alumina silicate fibre blanket layer 2, fibrage 3 and thermal protection layer 4 successively from furnace wall steel plate 5 inner surface, and the thickness of described refractory fiber furnace lining structure is 300 ~ 350mm.
Wherein, nano heat-insulating insulation flaggy 1 adopts that commercially available thickness is the sheet material of 5mm, alumina silicate fibre blanket 2 be temperature of classifying is high-purity type alumina silicate fibre blanket of 1260 DEG C, and alumina silicate fibre blanket 2 thickness is 25 ~ 35mm.
Fibrage 3 adopt classification temperature be 1427 DEG C containing zirconium type refractory fibre, its thickness is 250 ~ 300mm, described containing zirconium type refractory fibre for containing zirconium type refractory fibre " Z " shape module.
Thermal protection layer 4 adopts fiber reinforcement alumina hollow ball heat insulation spray finishing material, its thickness 5 ~ 20mm.Adopt Chinese patent " Ouyang De just, Luo Anzhi, Jiang Yanghu, Sun Liping, Xiong Jianliang, Zhu Shanhe; refractory heat-insulating spray paint and preparation method thereof and application; Authorization Notice No. CN 102924099B " disclosed refractory heat-insulating spray paint preparation, maximum operation (service) temperature is 1600 DEG C.
Paving mode
First at furnace wall steel plate 5 inner surface tiling nano heat-insulating warming plate, then at nano heat-insulating insulation flaggy 1 surface tiling alumina silicate fibre blanket, alumina silicate fibre blanket layer 2 surface will be arranged in again containing zirconium type refractory fibre " Z " shape module mistake row, with adjacent block cut surface (contraction front) the docking arrangement of row's module, and in cut surface abutment joint, adopt the non-typical zirconium type refractory fibre that contains of same material to carry out compression filling, adopt the riveting method fixed installation of internal fixtion, set bolt penetrates alumina silicate fibre blanket 2 and is welded on furnace wall steel plate 5 inner surface in advance; Obtain fibrage 3, finally by fiber reinforcement alumina hollow ball heat insulation spray finishing material for being laid on fibrage 3, namely obtain refractory fiber furnace lining.
Other unspecified part is prior art.Although above-described embodiment has made detailed description to the utility model; but it is only the utility model part embodiment; instead of whole embodiment; people can also obtain other embodiments according to the present embodiment under without creative prerequisite, and these embodiments all belong to the utility model protection domain.
Claims (5)
1. a refractory fiber furnace lining structure, described refractory fiber furnace lining structure is laid in furnace wall inner surface of steel plate, it is characterized in that: described refractory fiber furnace lining structure is inwardly equipped with nano heat-insulating insulation flaggy (1), alumina silicate fibre blanket layer (2), fibrage (3) and thermal protection layer (4) successively from furnace wall inner surface of steel plate, and the thickness of described refractory fiber furnace lining structure is 20 ~ 40mm.
2. refractory fiber furnace lining structure according to claim 1, is characterized in that: described nano heat-insulating insulation flaggy (1) adopts thickness to be the sheet material of 5 ~ 10mm.
3. refractory fiber furnace lining structure according to claim 1 and 2, it is characterized in that: described alumina silicate fibre blanket layer (2) employing classification temperature is the alumina silicate fibre blanket of 1260 DEG C, it is laid in nano heat-insulating insulation flaggy (1) surface, and described alumina silicate fibre blanket layer (2) thickness is 25 ~ 35mm.
4. refractory fiber furnace lining structure according to claim 1 and 2, it is characterized in that: described fibrage (3) adopt classification temperature be 1427 DEG C containing zirconium type refractory fibre, its wrong row is arranged in alumina silicate fibre blanket layer (2) surface, and described fibrage (3) is 250 ~ 300mm.
5. refractory fiber furnace lining structure according to claim 1 and 2, is characterized in that: described thermal protection layer (4) adopts fiber reinforcement alumina hollow ball heat insulation spray finishing material, its thickness 10 ~ 20mm.
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| CN201420663743.2U CN204286101U (en) | 2014-11-07 | 2014-11-07 | Refractory fiber furnace lining structure |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202924A (en) * | 2015-10-29 | 2015-12-30 | 三门峡市盛源材料工程有限公司 | Heat-insulating lining of rotary tunnel kiln |
| CN106855358A (en) * | 2015-12-09 | 2017-06-16 | 中国二十冶集团有限公司 | Annealing furnace furnace lining stainless steel protection plate fixing means |
| CN108826993A (en) * | 2018-06-21 | 2018-11-16 | 滁州市三和纤维制造有限公司 | A kind of new type high temperature ceramic fibre liner |
| CN109341353A (en) * | 2018-09-28 | 2019-02-15 | 武汉钢铁有限公司 | Hot-rolling heating furnace low heat emission furnace lining structure |
| CN110527820A (en) * | 2019-08-26 | 2019-12-03 | 武汉钢铁有限公司 | Cold rolled continuous annealing furnace fibre furnace lining structure |
| CN111630191A (en) * | 2018-02-06 | 2020-09-04 | 三菱化学株式会社 | Roll shaft heat insulating member for continuous annealing furnace and continuous annealing furnace |
| CN112923731A (en) * | 2021-02-06 | 2021-06-08 | 江西铜业集团(贵溪)冶金化工工程有限公司 | Local maintenance method for flash furnace bottom bricks |
| CN118406507A (en) * | 2024-07-03 | 2024-07-30 | 山东鲁阳节能材料股份有限公司 | Full-fiber coking furnace door liner and preparation method thereof |
-
2014
- 2014-11-07 CN CN201420663743.2U patent/CN204286101U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202924A (en) * | 2015-10-29 | 2015-12-30 | 三门峡市盛源材料工程有限公司 | Heat-insulating lining of rotary tunnel kiln |
| CN106855358A (en) * | 2015-12-09 | 2017-06-16 | 中国二十冶集团有限公司 | Annealing furnace furnace lining stainless steel protection plate fixing means |
| CN106855358B (en) * | 2015-12-09 | 2019-03-15 | 中国二十冶集团有限公司 | Annealing furnace furnace lining stainless steel protection plate fixing means |
| CN111630191A (en) * | 2018-02-06 | 2020-09-04 | 三菱化学株式会社 | Roll shaft heat insulating member for continuous annealing furnace and continuous annealing furnace |
| CN108826993A (en) * | 2018-06-21 | 2018-11-16 | 滁州市三和纤维制造有限公司 | A kind of new type high temperature ceramic fibre liner |
| CN109341353A (en) * | 2018-09-28 | 2019-02-15 | 武汉钢铁有限公司 | Hot-rolling heating furnace low heat emission furnace lining structure |
| CN110527820A (en) * | 2019-08-26 | 2019-12-03 | 武汉钢铁有限公司 | Cold rolled continuous annealing furnace fibre furnace lining structure |
| CN112923731A (en) * | 2021-02-06 | 2021-06-08 | 江西铜业集团(贵溪)冶金化工工程有限公司 | Local maintenance method for flash furnace bottom bricks |
| CN118406507A (en) * | 2024-07-03 | 2024-07-30 | 山东鲁阳节能材料股份有限公司 | Full-fiber coking furnace door liner and preparation method thereof |
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Effective date of registration: 20170726 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuhan, Hubei, Wuchang Friendship Avenue, No. 999, block A, layer 15, layer Patentee before: Wuhan Iron & Steel (Group) Corp. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20150422 Termination date: 20191107 |