CN100578127C - Fluidized calcining furnace ball arc furnace top and method of forming same - Google Patents

Fluidized calcining furnace ball arc furnace top and method of forming same Download PDF

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Publication number
CN100578127C
CN100578127C CN200710055127A CN200710055127A CN100578127C CN 100578127 C CN100578127 C CN 100578127C CN 200710055127 A CN200710055127 A CN 200710055127A CN 200710055127 A CN200710055127 A CN 200710055127A CN 100578127 C CN100578127 C CN 100578127C
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Prior art keywords
furnace roof
tie beam
collar tie
center
stainless steel
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CN200710055127A
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CN101261081A (en
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李朝侠
黄河
黄兴远
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Luoyang Luohua powder engineering special refractory Co.,Ltd.
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李朝侠
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Abstract

The invention provides a fluidizaton roasting furnace ball arch furnace top. A heavy castable layer working lining adopts a high intensity low cement castable refractory or a steel fiber reinforced castable refractory. The inside of the layer is provided with a plurality of binaural stainless steel clips widthways to connect the castable material casting by different rings and blocks into a whole. The lateral wall of a camber angle ring beam is provided with a light clay brick and a connecting rib, the outside lateral wall is provided with a lateral wall reinforcing channel steel, the inner layer is provided with a plurality groups of stainless steel clips which connect the light clay brick, the heavy castable refractory layer working lining and the lateral wall reinforcing channel steel into a whole. The forming method is as follows: (1) the center of gravity and the symmetric center of the furnace top are arranged in one line; (2) the furnace top is divided into a plurality of small blocks, the bottom arc length is less than or equal to 1.2 meters; (3) the mould is supported according to the divided small blocks; (4) a heat insulating material is arranged and the thickness of the heat insulating material is set; (5) the integral casting is performed. The fluidizaton roasting furnace ball arch furnace top has the advantages of good leak tightness, high intensity, long service life, short construction cycle and low cost, does not have any gap and does not fall off.

Description

Fluidized roaster ball collar furnace roof and manufacturing process thereof
Technical field
The present invention relates to the fluidized roaster technology, specifically a kind of fluidized roaster ball collar furnace roof and manufacturing process thereof.
Background technology
At present, the large-scale fluidized roaster that China uses (comprising the technology that other countries and China in the world introduce) all adopts domes.The arch angular diameter can reach 10M-30M, and operating temperature is generally at 650 ℃-1200 ℃ in the stove, and furnace roof working lining tradition adopts various wedge shape refractory brick to build working lining top building heat-insulation brick by laying bricks or stones.Sizable cavity is left on insulating brick top, and cavity top covers the furnace roof box hat and wall stove box hat is fixed together, and is used to prevent that distortion of Side wall box hat and rain and snow from washing away furnace roof.In order to prevent that acid fume corrodes in the stove, generally also need outside box hat, to do anticorrosion insulating layer.Its shortcoming is: one, this technology belongs to a kind of layering absolute construction, reason because of technology, stove needs blowing out for several times every year, its temperature rises with tens times of speed to hundreds of times ℃/h during each blowing out, furnace roof is produced bigger thermal stress impact, this strength makes masonry area brick produce shift reciprocately along the thermal stress direction along furnace roof working lining masonry in the transmittance process of arch angle.Two, because the existence of masonry brickwork joint and the thermal deformation of brick setting itself make working lining refractory brick by pinch off, furnace roof is further changed, masonry is loosening, produce furnace roof and leak cigarette, a series of pernicious chain reactions of degradation make the stove long-time running under unsafe hidden danger under the intensity.Three, its equipment leaks the cigarette serious environment pollution in a large number because of furnace roof, and furnace roof seriously causes whole furnace roof to cave in because of falling brick, causes security incident.Four, because ovalizing deflection has taken place for postrun furnace roof and arch angle, it is very difficult to build refractory brick when making furnace roof change maintenance again by laying bricks or stones, and the brickwork joint after the replacing is more inhomogeneous, and the speed of vault damage is faster.
Summary of the invention
Purpose of the present invention, the deficiency that is intended to solve the problems of the technologies described above discloses a kind of fluidized roaster ball collar furnace roof and manufacturing process thereof, does not match to solve the coefficient of thermal expansion that existing top construction exists, and structural stratification causes the problem of furnace roof large tracts of land damage.
The present invention is the deficiency that addresses the above problem, the technical scheme that is adopted is: a kind of fluidized roaster ball collar furnace roof, comprise the rainproof box hat of furnace roof, the lightening casting material heat-insulation layer, heavy wear-resistant castable work lining, arch angle collar tie beam, its heavy wear-resistant castable work lining adopts high-strength low-cement refractory pouring material or steel fibre to strengthen castable refractory, heavy wear-resistant castable work lining is the supporting course of spherical furnace roof, high-strength low-cement refractory pouring material that it adopts or steel fibre strengthen castable refractory and have replaced reinforced concrete structure, adopted when constructing and divided ring because of it, the method of block construction, laterally be provided with a plurality of ears stainless steel anchoring pieces at internal layer for this reason, ears stainless steel anchoring piece divides ring with institute, the heavy wear-resistant castable work lining of piecemeal connects into an integral body, on the collar tie beam Side wall of arch angle, be provided with the clay light-weight brick and connect muscle, outside the Side wall of arch angle collar tie beam, be provided with the Side wall and strengthen channel-section steel, internal layer at arch angle collar tie beam has the stainless steel anchoring pieces of organizing more, and the stainless steel anchoring piece is with the clay light-weight brick, heavy wear-resistant castable work lining and stove Side wall are strengthened the channel-section steel structure that is connected in one.
The heavy wear-resistant castable work lining internal layer of ball collar furnace roof of the present invention is provided with many group ears stainless steel anchoring pieces, and its ears stainless steel anchoring piece will divide the material feeding of watering of ring, piecemeal to be connected to become an integral body the wear-resisting work lining of heavy.
Arch of the present invention angle collar tie beam adopts the unshape refractory castable, and has high gumbo light-weight brick and fibrofelt to do intensity coupling and flexible coupling between stove Side wall and arch angle collar tie beam, is provided with the skeleton that the stainless steel anchoring piece is formed in the collar tie beam of arch angle.
Lightening casting material heat-insulation layer of the present invention waters the material feeding cast by pearlite light and forms, and thickness is greater than the wear-resisting work lining of heavy.
Heavy wear-resistant castable work lining of the present invention strengthens castable refractory by high-strength low-cement refractory pouring material or steel fibre and forms, and has replaced the heat resisting steel reinforced concrete.
The wear-resisting work lining of heavy of the present invention also utilizes cast to cut off on heavy wear-resistant castable work lining and reserves dilatation joint or stealthy dilatation joint.
The manufacturing process of a kind of fluidized roaster ball collar furnace roof of the present invention comprises the following steps:
(1), determine the center of gravity and the symmetrical centre of stove, set the center of circle according to the center of gravity and the symmetrical centre of stove;
(2), establish the center of gravity of furnace roof and symmetrical centre point-blank;
(3), angle collar tie beam (5) is encircleed in cast earlier;
(4), back cast heavy wear-resistant castable work lining (4), stove by different-diameter when cast heavy wear-resistant castable work lining (4) is separated into some rings according to the center of circle with furnace roof, again ring is divided into plurality of small blocks, arc length≤1.2 meter, every bottom, by the fritter formwork that is divided into, and implement continuous pouring;
(5), the cast lightening casting material heat-insulation layer (3), thickness is greater than heavy wear-resistant castable work lining (4);
(6), the rainproof box hat of furnace roof (2) is installed;
(7), shaping finishes.
Lightening casting material of the present invention adopts pearlite light to water material feeding, and market is on sale.
The present invention also adopts heat-resisting reinforced concrete anchor ear arch angle collar tie beam, castable demoulding after 24 hours when being shaped.
Rainproof box hat of furnace roof of the present invention and pearlite light water the material feeding close proximity, do not stay the gap.
Rainproof box hat of furnace roof of the present invention and body of heater Side wall box hat are not established external thermal insulation, and it mainly is to prevent to rain the erosion furnace body.
Advantage of the present invention is:
1, solved the coefficient of thermal expansion that existing top construction exists and do not matched, structural stratification causes the problem of furnace roof large tracts of land damage.
2, heat-insulation layer need not be set outside box hat.
3, boiler roof sealing is good, the body of heater one integrated mass, and material seal is in conjunction with very close to each other.
4, continuous heat conduction form and continuous structural strength are arranged.
5, furnace roof intensity height can the flake-off piece.
6, compared with prior art, can improve 2-3 times of service life.
7, short construction period, baker is convenient, has reduced cost.
Description of drawings
Fig. 1 is a cross-sectional view of the present invention
Fig. 2 is the schematic diagram of heavy wear-resistant castable work lining manufacturing process of the present invention
Mark among the figure: 1, ball collar furnace roof; 2, the rainproof box hat of furnace roof; 3, lightening casting material heat-insulation layer; 4, the heavy wear-resistant castable waters material feeding working lining layer; 5, arch angle collar tie beam; 6, stainless steel anchoring piece; 7, clay light-weight brick; 8, piecemeal cast; 9, Fourth Ring; 10, the 3rd ring; 11, second ring; 12, first ring; 13, the center of circle; 14, fibrofelt; 15, the Side wall is strengthened channel-section steel; 16, connect muscle; 17, ears stainless steel anchoring piece.
The specific embodiment
As shown in Figure 1, fluidized roaster ball collar furnace roof 1, comprise the rainproof box hat 2 of furnace roof, lightening casting material heat-insulation layer 3, heavy wear-resistant castable work lining 4, arch angle collar tie beam 5, heavy wear-resistant castable work lining 4 internal layers at spherical furnace roof 1 are provided with a plurality of ears stainless steel anchoring pieces 17, and its ears stainless steel anchoring piece 17 will divide the heavy wear-resistant castable work lining 4 of ring, piecemeal to connect as a whole.At the arch angle at ball collar furnace roof 1 two ends collar tie beam 5 internal layers the stainless steel anchoring pieces of organizing 6 are arranged more, its stainless steel anchoring piece 6 is strengthened channel-section steel with heavy wear-resistant castable work lining 4 with arch angle collar tie beam 5 and Side wall and is connected to become an integral body.
As shown in Figure 1 and Figure 2, the top internal layer of ball collar furnace roof 1 is provided with a plurality of stainless steel anchoring pieces 6, and its stainless steel anchoring piece 6 connects into as a whole with the rainproof box hat 2 of furnace roof lightening casting material heat-insulation layer 3, heavy wear-resistant castable work lining 4.
As shown in Figure 1, arch angle collar tie beam 5, adopt the unshape refractory castable, and have high gumbo light-weight brick 7 and fibrofelt 14 between arch angle collar tie beam 5, to do intensity coupling and flexible coupling, be provided with stainless steel anchoring piece 6 and connect the skeleton that muscle 16 is formed in the arch angle collar tie beam 5.
As shown in Figure 1 and Figure 2, manufacturing process of the present invention comprises the following steps:
(1), determine the center of gravity and the symmetrical centre of stove, set the center of circle according to the center of gravity and the symmetrical centre of stove;
(2), establish the center of gravity of furnace roof and symmetrical centre point-blank;
(3), angle collar tie beam 5 is encircleed in cast earlier;
(4), pour into a mould heavy wear-resistant castable work lining 4 again, stove by different-diameter during cast heavy wear-resistant castable work lining 4 is separated into some rings according to the center of circle with furnace roof, again ring is divided into plurality of small blocks, arc length≤1.2, every bottom meter, by the fritter formwork that is divided into, and implement continuous pouring;
(5), cast lightening casting material heat-insulation layer 3, thickness is greater than the wear-resisting work lining 4 of heavy;
(6), the rainproof box hat 2 of furnace roof is installed;
(7), shaping finishes.
Embodiment 1
With 45m2 fluidized roaster ball collar furnace roof is example, top construction: the overall structure of furnace roof is set to three layers, the skin of furnace roof is set to box hat, the centre is a heat-insulation layer, internal layer is unsetting fire-resistant light insulated pouring material, in the integrated poured furnace lining, a plurality of stainless steel anchoring pieces that are provided with are done skeleton, heavy wear-resistant castable work lining 4 is strengthened channel-section steel with arch angle collar tie beam 5 and Side wall be connected to become an integral body.1, condition of work: 1., operating temperature: 800-1000 ℃.2., working media: SO 2, SO 3, mine dust, A S, F etc.2, top construction: 1., the ball-type vault; 2., ball collar radius: SR=9000mm; 3., sagitta: H=1206mm; 4., furnace roof flame retardant coating thickness: f=300mm.Manufacturing process adopts the following step: 1, work is prepared: meet Design Requirement Drawing when (1), internal model making, the scaffold that supports mold has enough intensity, guarantees that mold is indeformable in the work progress.(2), use and water material feeding, the strict control of the proportioning of various aggregates, powder and bonding agent.(3), whole furnace roof one-time cast-forming, operation is essential to be connected, and can not be interrupted.2, manufacturing process: (1), the center of gravity of determining stove and symmetrical centre, establish the center of gravity of furnace roof and symmetrical centre point-blank; (2), furnace roof is separated into some rings, every ring is divided into plurality of small blocks, bottom arc length≤1.2 meter; (3), by the fritter formwork that is divided into, set the center of circle according to the center of gravity of stove and symmetrical centre, be divided into the five rings according to the center of circle, 1., first encircle 34 compositions the concrete ring that divides becomes as follows with the piece array:; 2., 28 compositions of second ring; 3., the 3rd 14 compositions; 4., 8 compositions in Fourth Ring; 5., the center of circle is 600 1 of ¢.(4), insulation material thickness being set is f200mm; (5), integrated poured, continuous pouring is uninterrupted.

Claims (5)

1, a kind of fluidized roaster ball collar furnace roof, comprise the rainproof box hat of furnace roof (2), lightening casting material heat-insulation layer (3), heavy wear-resistant castable work lining (4), arch angle collar tie beam (5), it is characterized in that: heavy wear-resistant castable work lining (4) adopts high-strength low-cement refractory pouring material or steel fibre to strengthen castable refractory, laterally be provided with a plurality of ears stainless steel anchoring pieces (17) in its layer, to divide ring, the material feeding of watering of piecemeal cast is connected to become an integral body, on the Side wall of arch angle collar tie beam (5), be provided with clay light-weight brick (7) and connect muscle (16), the Side wall of arch angle collar tie beam (5) is provided with the Side wall outward and strengthens channel-section steel (15), internal layer at arch angle collar tie beam (5) has the stainless steel anchoring pieces of organizing (6) more, and stainless steel anchoring piece (6) is with clay light-weight brick (7), heavy wear-resistant castable work lining (4) is strengthened channel-section steel (15) with the Side wall and is connected into as a whole.
2, a kind of fluidized roaster ball collar furnace roof according to claim 1, it is characterized in that: described arch angle collar tie beam (5), adopt the unshape refractory castable, and have high gumbo light-weight brick and fibrofelt between stove Side wall and arch angle collar tie beam, to do intensity coupling and flexible coupling, also be provided with the skeleton that stainless steel anchoring piece (6) is formed in the arch angle collar tie beam (5).
3, a kind of fluidized roaster ball collar furnace roof according to claim 1 is characterized in that: described lightening casting material heat-insulation layer (3), and water the material feeding cast by pearlite light and form, its thickness is greater than heavy wear-resistant castable work lining (4).
4, a kind of fluidized roaster ball collar furnace roof according to claim 1 is characterized in that: also utilize cast to cut off on heavy wear-resistant castable work lining (4) and reserve dilatation joint or stealthy dilatation joint.
5, the manufacturing process of a kind of fluidized roaster ball collar furnace roof according to claim 1 is characterized in that comprising the following steps:
(1), determine the center of gravity and the symmetrical centre of stove, set the center of circle according to the center of gravity and the symmetrical centre of stove;
(2), establish the center of gravity of furnace roof and symmetrical centre point-blank;
(3), angle collar tie beam (5) is encircleed in cast earlier;
(4), pour into a mould heavy wear-resistant castable work lining (4) again, stove by different-diameter during cast heavy wear-resistant castable work lining (4) is separated into some rings according to the center of circle with furnace roof, again ring is divided into plurality of small blocks, arc length≤1.2 meter, every bottom, by the fritter formwork that is divided into, and implement continuous pouring;
(5), the cast lightening casting material heat-insulation layer (3), thickness is greater than the wear-resisting work lining of heavy (4);
(6), the rainproof box hat of furnace roof (2) is installed;
(7), shaping finishes.
CN200710055127A 2007-09-11 2007-09-11 Fluidized calcining furnace ball arc furnace top and method of forming same Active CN100578127C (en)

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CN100578127C true CN100578127C (en) 2010-01-06

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104061786A (en) * 2014-07-08 2014-09-24 七冶建设有限责任公司 Method for building spherical crown type furnace top by laying bricks
RU214747U1 (en) * 2022-03-02 2022-11-11 Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") Roof of high temperature furnace

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Publication number Priority date Publication date Assignee Title
CN101487538B (en) * 2009-02-23 2010-06-02 于风福 Wind valve plate
CN101900484B (en) * 2009-11-05 2013-04-03 中国恩菲工程技术有限公司 Fluidized calcining furnace
CN102241995B (en) * 2010-05-11 2014-10-01 五冶集团上海有限公司 Dry quenching expansion joint firebrick structure construction technology
WO2013179409A1 (en) * 2012-05-30 2013-12-05 Agcセラミックス株式会社 Crown structure
CN103791720B (en) * 2014-01-28 2015-04-22 洛阳洛华窑业有限公司 Large arch-shaped porous high-temperature electric furnace top structure
CN104529485B (en) * 2014-12-08 2016-05-11 武汉理工大学 Two-layer compound refractory material and two-layer compound refractory material ditch cover and its manufacture method and application
CN104748549B (en) * 2015-04-03 2017-05-10 沈阳鑫博工业技术股份有限公司 Top cover structure of industrial kiln

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104061786A (en) * 2014-07-08 2014-09-24 七冶建设有限责任公司 Method for building spherical crown type furnace top by laying bricks
CN104061786B (en) * 2014-07-08 2015-12-30 七冶建设有限责任公司 A kind of ball crown type furnace roof building method of fluidizing reactor
RU214747U1 (en) * 2022-03-02 2022-11-11 Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") Roof of high temperature furnace

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Assignee: Powder technology special refractories Co., Ltd of Lip river, Luoyang City China

Assignor: Li Chaoxia

Contract record no.: 2011990000834

Denomination of invention: Fluidized calcining furnace ball arc furnace top and method of forming same

Granted publication date: 20100106

License type: Exclusive License

Open date: 20080910

Record date: 20110829

TR01 Transfer of patent right

Effective date of registration: 20210917

Address after: 471000 Room 501, building C, Torch Innovation and entrepreneurship Park, high tech Zone, Luoyang City, Henan Province

Patentee after: Luoyang Luohua powder engineering special refractory Co.,Ltd.

Address before: 471003 box 555, Henan University of Science and Technology, Jianxi District, Henan, Luoyang

Patentee before: Li Chaoxia

TR01 Transfer of patent right