CN105241253A - Arched bearing platform of fluidized roaster and pouring method of arched bearing platform - Google Patents
Arched bearing platform of fluidized roaster and pouring method of arched bearing platform Download PDFInfo
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- CN105241253A CN105241253A CN201510779575.2A CN201510779575A CN105241253A CN 105241253 A CN105241253 A CN 105241253A CN 201510779575 A CN201510779575 A CN 201510779575A CN 105241253 A CN105241253 A CN 105241253A
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Abstract
The invention discloses an arched bearing platform of a fluidized roaster and a pouring method of the arched bearing platform. The arched bearing platform comprises a bearing platform main body and a supporting table; the bearing platform main body is fastened with the supporting table through an L-shaped fastening surface; the bearing platform main body is formed through layered pouring from a plurality of layers of different castables, and the various layers are spaced by hydrophobic fiber plates; air holes formed in the bearing platform main body are connected by use of wear-resistant and high temperature-resistant high aluminum ceramic tubes at the junctions of different material layers; as the hydrophobic fiber plates are added, a cooperation structure of the bearing platform main body and the supporting table is improved and steel fibers different in content are added to the castables, the arched bearing platform is capable of reliably bearing the weight of materials in a roasting chamber and a high-frequency vibration load during fluidized roasting, and also capable of effectively preventing the materials from dropping into a combustion chamber at the bottom from the roasting chamber.
Description
Technical field
The invention belongs to fluidized roaster field, be specifically related to a kind of fluidized roaster arch bearing platform and pouring procedure thereof.
Background technology
At present, the fluidized roaster that China's majority uses is all pass into the pressure-air that can make goods fluid at furnace bottom, then by directly heating material at stove combustion natural gas, diesel oil etc.But for some material (such as cast used sand), when flame directly contacts with material, a small amount of material can be made because local temperature is too high to reduce the quality of material after roasting.
In prior art, some roasters start to adopt the method be provided separately in combustion chamber and firing chamber, are set directly at the bottom of firing chamber by combustion chamber.Such pressure-air, natural gas or diesel oil etc. are after Thorough combustion mixing is carried out in combustion chamber, firing chamber is entered again by the passage between combustion chamber and firing chamber, this type of roaster utilizes high temperature and high pressure flue gas to carry out indirect fluosolids roasting to material, thus avoid flame and directly contact with material, mixed flue-gas temperature is even, and sintering temperature uniformity is good.
But this type of fluidized roaster needs the arch castable platform arranging resistance to about 1000 DEG C high temperature between combustion chamber and firing chamber.This arch platform not only wants dither load when can bear the weight of material own and goods fluid roasting, also will prevent castable refractory from ftractureing under high-temperature baking and cause material to fall into lower combustion chamber from platform crack or other positions.The cast difficulty of such platform is very big, requires higher to pouring type.If pouring type is wrong, its cost of equipment maintenance drops into also comparatively large, and economic benefit is bad.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of fluidized roaster arch bearing platform and pouring procedure thereof, the arch platform utilizing the method to pour into a mould can not only bear the dither load when weight of material own and fluosolids roasting in firing chamber, can also effectively prevent material from falling into the combustion chamber of bottom from firing chamber.
For achieving the above object, the invention provides following technical scheme: a kind of fluidized roaster arch bearing platform, comprise bearing platform main body and the brace table for support bearing platform main body, described brace table is arranged along roaster furnace shell inwall, described bearing platform main body is arranged on inside brace table, and described bearing platform main body is provided with several by the passage of firing chamber and combustion chamber; Described bearing platform main body is made up of some layers of pouring layer, and bottom pouring layer is ball collar shape, is provided with hydrophobic fiber plate between two adjacent pouring layers; In described passage, the intersection of Different layer of the compost is provided with high alumina ceramic pipe, and described high alumina ceramic pipe upper end is provided with the heat resistant and wear resistant blast cap for fluidisation material; The pouring layer being positioned at top in described bearing platform main body adopts high strength refractory material, and the ball collar shape pouring layer of bottom adopts the refractory casting material that thermal shock resistance is good.
Further, the cross section of described brace table is up-narrow and down-wide trapezium structure, and described bearing platform main body and brace table are interlocked.
Further, described brace table is corresponding with bearing platform main body upper end is provided with and L-type buckling surface.
Further, micropore heat-insulating shield is provided with between described brace table and roaster furnace shell inwall.
Further, described micropore heat-insulating shield is fixed on roaster furnace shell by Y shape anchoring piece.
The invention also discloses a kind of pouring procedure of fluidized roaster arch bearing platform, mainly comprise the following steps:
1) the micropore heat-insulating shield that one deck 25mm that tiles on roaster furnace shell inwall is thick, and be fixed on roaster furnace shell by Y shape anchoring piece;
2) build brace table: annular brace table mould is installed, utilize annular brace platform mould one-time-concreting shaping;
3) bearing platform main body is built:
A, porous ball arch mould is set in the middle of the brace table, and on porous ball arch mould, passage mould is installed, build the ball collar shape pouring layer of shaping bottom;
B, offer passage according to passage die location correspondence on hydrophobic type fiberboard, above ball collar shape pouring layer, lay the hydrophobic type fiberboard of 8 ~ 10mm;
C, pour into a mould intermediate layer successively, all separate with hydrophobic type fiberboard between each adjacent LIFT;
D, adjustment passage die location, cast upper pouring layer.
Described brace table employing has hypotonicity, the castable of high-wearing feature is poured into a mould; Described bearing platform main body adopts castable refractory to pour into a mould, and wherein, adds the steel fibre of 3% ~ 5%, add 8 ~ 10% steel fibres in the castable of upper pouring layer in the castable of ball collar shape pouring layer.
Described step 3) in when building bearing platform main body, when being poured into the intersection close to Different layer of the compost, between the upper and lower mould of passage mould, continuing cast after ceramic tube for sleeving, make earthenware be inlaid in the intersection of Different layer of the compost.
Beneficial effect of the present invention is:
1, middle bearing platform main body is ball domes, and surrounding is supported by the inclined-plane brace table that resistance to heat shocks is good, and whole bearing platform agent structure is stablized, and weight capacity is strong, can bear the dither load when weight of material own and fluosolids roasting in firing chamber.
2, middle bearing platform main body is formed by the different castable laminated pouring of multilayer, each interlayer hydrophobic fiber plate separates, intercept the castable of different shrinkage, avoid teeming stage to occur through crack, leak under preventing the material of bearing platform in cracking situation in firing chamber.
The steel fibre of different content is added with in the castable of 3, the different pouring layer of middle bearing platform main body, castable toughness can be strengthened, improve its resistance to stress, adaptability to changes, improve its mechanical shock resistance, thermal shock resistance, cracking resistance and spalling, the linear shrinkage after maintenance, drying and heat treatment can also be suppressed.
4, brace table and bearing platform main body are interlocked by L-type buckling surface, can effectively prevent fine granular materials from leaking under the interface ramp gap of brace table and bearing platform main body.
5, passage adopts the high alumina ceramic pipe of Wear-resistant, high-temperature resistant to connect at the intersection of Different layer of the compost, can effectively prevent from causing full communication between the higher and lower levels hole problem of misalignment because of the contraction of castable during baking.
6, the micropore heat-insulating shield of furnace shell interior tiling one deck, high insulating effect, can effectively avoid the surface temperature of body of heater too high, reduces radiation loss, improves the thermal efficiency.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:
Fig. 1 is structural representation of the present invention;
Fig. 2 is micropore heat-insulating shield and brace table mould scheme of installation;
Fig. 3 is ball collar shape mould and passage mould scheme of installation;
Fig. 4 is ball collar shape pouring layer casting condition schematic diagram;
Fig. 5 is upper pouring layer casting condition schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As shown in the figure, fluidized roaster arch bearing platform in the present embodiment, comprise bearing platform main body and the brace table 2 for support bearing platform main body, described brace table 2 is arranged along roaster furnace shell 8 inwall, described bearing platform main body is arranged on inside brace table 2, and described bearing platform main body is provided with several by the passage 14 of firing chamber and combustion chamber; Described bearing platform main body is made up of some layers of pouring layer, and bottom pouring layer is ball collar shape, is provided with hydrophobic fiber plate 4 between two adjacent pouring layers; In described passage 14, the intersection of Different layer of the compost is provided with high alumina ceramic pipe 6, and described high alumina ceramic pipe 6 upper end is provided with the heat resistant and wear resistant blast cap for fluidisation material; The pouring layer being positioned at top in described bearing platform main body adopts high strength refractory material, and the ball collar shape pouring layer of bottom adopts the refractory casting material that thermal shock resistance is good.
Concrete, the fluosolids roasting furnace body entirety in the present embodiment is cylindrical shape, and arch bearing platform is arranged to entirety together with roaster upper furnace body, by Flange joint between upper lower furnace body, platform upper is firing chamber, and bottom is combustion chamber, furnace shell 8 material adopts carbon steel sheet, thickness >=20mm.According to different load-bearing demand, a small amount of floor of furnace shell 8 arranged outside, has increased furnace shell structure rigidity.Height, the thickness of furnace shell and platform all can adjust according to actual conditions.Furnace shell evenly arranges 4 suspension centres outward, is convenient to the installation of arch bearing platform.Hydrophobic fiber plate 4 one aspect being arranged on Different layer of the compost intersection in bearing platform main body can intercept the castable of different shrinkage, avoids teeming stage to occur through crack, on the other hand, leaks under preventing the material of bearing platform in cracking situation in firing chamber.
In the present embodiment, the cross section of brace table 2 is up-narrow and down-wide trapezium structure, and described bearing platform main body and brace table 2 are interlocked, and the up-narrow and down-wide reliable support bearing platform main body of brace table 2 energy, improves the resistance to overturning of structure.
As the further improvement of such scheme, described brace table 2 is corresponding with bearing platform main body upper end to be provided with and L-type buckling surface.Namely above brace table 2, arrange one section of L-type cast section, corresponding, also there is the cast section of pour into a mould section with L-type and being interlocked bearing platform main body upper end, and this structure can prevent fine granular materials from leaking under the interface ramp gap of brace table 2 and bearing platform main body.
As the further improvement of such scheme, be provided with micropore heat-insulating shield 1 between described brace table 2 and roaster furnace shell 8 inwall, described micropore heat-insulating shield 1 is fixed on roaster furnace shell 8 by Y shape anchoring piece 7; Micropore heat-insulating shield 1 heat insulation effect is 4 times of common heat-insulating fiberboard, this section of body of heater surface temperature can be avoided too high, improve its heat-insulating property, reduces body of heater radiation loss, improves the thermal efficiency.
The invention also discloses a kind of pouring procedure of above-mentioned fluidized roaster arch bearing platform, mainly comprise the following steps:
1) the micropore heat-insulating shield 1 that one deck 25mm that tiles on roaster furnace shell 8 inwall is thick, and be fixed on roaster furnace shell 8 by Y shape anchoring piece 7;
2) build brace table 2: annular brace table mould 9 is installed, utilize annular brace platform mould 9 one-time-concreting shaping;
3) bearing platform main body is built:
A, porous ball arch mould 12 is set in the middle of the brace table 2, and on porous ball arch mould 12, passage mould is installed, build the ball collar shape pouring layer 5 of shaping bottom; After installation passage mould, be fixed by passage die fixing device 13 again above several passage mould, prevent from washing upside down mould in casting process.
B, offer passage 14 according to passage die location correspondence on hydrophobic type fiberboard 4, above ball collar shape pouring layer 5, lay the hydrophobic type fiberboard 4 of 8 ~ 10mm;
If C has the intermediate layer of multilayer unlike material, pour into a mould intermediate layer successively, all separate with hydrophobic type fiberboard 4 between each adjacent LIFT;
D, after ball collar shape pouring layer 5 moulding by casting, adjustable passage die location, will it move and fix, and is convenient to cast upper pouring layer 3.
Concrete, the bearing platform main body in the present embodiment is made up of the upper pouring layer 3 at the ball collar shape pouring layer 5 of bottom, intermediate layer hydrophobic limiting plate 4 and top; Wherein, described brace table 2 adopt there is hypotonicity, the castable of high-wearing feature pours into a mould; Make brace table 2 can be applicable to high-frequency vibration working environment; The castable refractory that ball collar shape pouring layer 5 adopts thermal shock resistance good is poured into a mould, and upper pouring layer 3 adopts high-strength fireproof pour material to pour into a mould, and can prevent bearing platform main body from occurring crackle in high temperature environments.Wherein, the steel fibre of 3% ~ 5% is added in the castable of ball collar shape pouring layer 5,8 ~ 10% steel fibres are added in the castable of upper pouring layer 3, castable toughness can be strengthened, improve its resistance to stress, adaptability to changes, improve its mechanical shock resistance, thermal shock resistance, cracking resistance and spalling, the linear shrinkage after maintenance, drying and heat treatment can also be suppressed.
Described step 3) in when building bearing platform main body, when being poured into the intersection close to Different layer of the compost, cast is continued after the mold 10, bed die 11 ceramic tube for sleevings 6 of passage mould, earthenware 6 is made to be inlaid in the intersection of Different layer of the compost, to prevent from causing upper and lower ventilation 14 hole to misplace due to the contraction of castable during baking.
After whole bearing platform casting complete, take off auxiliary mould, together with being installed to other bodies of heater by this part body of heater.According to suitable drying out curve, toast.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (8)
1. a fluidized roaster arch bearing platform, it is characterized in that: comprise bearing platform main body and the brace table for support bearing platform main body, described brace table is arranged along roaster furnace shell inwall, described bearing platform main body is arranged on inside brace table, and described bearing platform main body is provided with several by the passage of firing chamber and combustion chamber; Described bearing platform main body is made up of some layers of pouring layer, and bottom pouring layer is ball collar shape, is provided with hydrophobic fiber plate between two adjacent pouring layers; In described passage, the intersection of Different layer of the compost is provided with high alumina ceramic pipe, and described high alumina ceramic pipe upper end is provided with the heat resistant and wear resistant blast cap for fluidisation material; The pouring layer being positioned at top in described bearing platform main body adopts high strength refractory material, and the ball collar shape pouring layer of bottom adopts the refractory casting material that thermal shock resistance is good.
2. fluidized roaster arch bearing platform according to claim 1, is characterized in that: the cross section of described brace table is up-narrow and down-wide trapezium structure, and described bearing platform main body and brace table are interlocked.
3. fluidized roaster arch bearing platform according to claim 2, is characterized in that: described brace table is corresponding with bearing platform main body upper end to be provided with and L-type buckling surface.
4. fluidized roaster arch bearing platform according to claim 1, is characterized in that: be provided with micropore heat-insulating shield between described brace table and roaster furnace shell inwall.
5. fluidized roaster arch bearing platform according to claim 4, is characterized in that: described micropore heat-insulating shield is fixed on roaster furnace shell by Y shape anchoring piece.
6. a pouring procedure for the fluidized roaster arch bearing platform as described in any one of claim 1-5, is characterized in that mainly comprising the following steps:
1) the micropore heat-insulating shield that one deck 25mm that tiles on roaster furnace shell inwall is thick, and be fixed on roaster furnace shell by Y shape anchoring piece;
2) build brace table: annular brace table mould is installed, utilize annular brace platform mould one-time-concreting shaping;
3) bearing platform main body is built:
A, porous ball arch mould is set in the middle of the brace table, and on porous ball arch mould, passage mould is installed, build the ball collar shape pouring layer of shaping bottom;
B, offer passage according to passage die location correspondence on hydrophobic type fiberboard, above ball collar shape pouring layer, lay the hydrophobic type fiberboard of 8 ~ 10mm;
C, pour into a mould intermediate layer successively, all separate with hydrophobic type fiberboard between each adjacent LIFT;
D, adjustment passage die location, cast upper pouring layer.
7. pouring procedure according to claim 6, is characterized in that: described brace table employing has hypotonicity, the castable of high-wearing feature is poured into a mould; Described bearing platform main body adopts castable refractory to pour into a mould, and wherein, adds the steel fibre of 3% ~ 5%, add 8 ~ 10% steel fibres in the castable of upper pouring layer in the castable of ball collar shape pouring layer.
8. pouring procedure according to claim 6, it is characterized in that: described step 3) in when building bearing platform main body, when being poured into the intersection close to Different layer of the compost, between the upper and lower mould of passage mould, continue cast after ceramic tube for sleeving, make earthenware be inlaid in the intersection of Different layer of the compost.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510779575.2A CN105241253B (en) | 2015-11-13 | 2015-11-13 | A kind of fluidized roaster arch bearing platform and its pouring procedure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510779575.2A CN105241253B (en) | 2015-11-13 | 2015-11-13 | A kind of fluidized roaster arch bearing platform and its pouring procedure |
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| CN105241253A true CN105241253A (en) | 2016-01-13 |
| CN105241253B CN105241253B (en) | 2017-07-11 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29802626U1 (en) * | 1997-02-18 | 1998-06-18 | Keller Gmbh | Plant for firing roof tiles on flat firing pads and such firing pad |
| CN2550091Y (en) * | 2002-06-24 | 2003-05-14 | 孙学忠 | Boiling type resin sand thermal regenerating furnace |
| CN203155937U (en) * | 2013-04-08 | 2013-08-28 | 于彦奇 | Clay sand hot-method reclaiming machine |
| CN104043772A (en) * | 2014-06-20 | 2014-09-17 | 中机中联工程有限公司 | Casting used sand thermal reclamation system |
| CN203875275U (en) * | 2014-06-20 | 2014-10-15 | 中机中联工程有限公司 | Heating device of thermal reclamation process of used casting sand |
| CN205102612U (en) * | 2015-11-13 | 2016-03-23 | 中机中联工程有限公司 | Fluidized roaster arch bearing platform |
-
2015
- 2015-11-13 CN CN201510779575.2A patent/CN105241253B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29802626U1 (en) * | 1997-02-18 | 1998-06-18 | Keller Gmbh | Plant for firing roof tiles on flat firing pads and such firing pad |
| CN2550091Y (en) * | 2002-06-24 | 2003-05-14 | 孙学忠 | Boiling type resin sand thermal regenerating furnace |
| CN203155937U (en) * | 2013-04-08 | 2013-08-28 | 于彦奇 | Clay sand hot-method reclaiming machine |
| CN104043772A (en) * | 2014-06-20 | 2014-09-17 | 中机中联工程有限公司 | Casting used sand thermal reclamation system |
| CN203875275U (en) * | 2014-06-20 | 2014-10-15 | 中机中联工程有限公司 | Heating device of thermal reclamation process of used casting sand |
| CN205102612U (en) * | 2015-11-13 | 2016-03-23 | 中机中联工程有限公司 | Fluidized roaster arch bearing platform |
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| CN105241253B (en) | 2017-07-11 |
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