CN206944718U - A kind of multiple hearth furnace castable furnace lining structure - Google Patents
A kind of multiple hearth furnace castable furnace lining structure Download PDFInfo
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- CN206944718U CN206944718U CN201720880733.8U CN201720880733U CN206944718U CN 206944718 U CN206944718 U CN 206944718U CN 201720880733 U CN201720880733 U CN 201720880733U CN 206944718 U CN206944718 U CN 206944718U
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- castable
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- multiple hearth
- furnace lining
- pallet
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Abstract
It the utility model is related to a kind of multiple hearth furnace castable furnace lining structure.The castable furnace lining of the multiple hearth furnace castable furnace lining structure in the inner surface of shell, and is fixed on shell by refractory material one-piece casting by metal anchorage.The furnace lining structure includes multiple castable pallets, and metal anchorage is provided with castable pallet.Castable furnace lining and castable pallet are divided into multiple blocks, reserve expansion clearance between each block, and connected between each block by metal anchorage.Multiple hearth furnace castable furnace lining structure resistance to overturning of the present utility model is high, and castable pallet is not easy to collapse, and does not overhaul the life-span and greatly prolongs, and the transformation of the way or repairing of furnace lining are simple and easy, applied widely.
Description
Technical field
A kind of furnace lining structure is the utility model is related to, more particularly to a kind of multiple hearth furnace castable furnace lining structure.
Background technology
Multiple hearth furnace has extensive purposes, such as non-ferrous metal metallurgy purification, sludge incineration, activated carbon in smelting chemical industry
Regeneration, magnesia calcination, ore treatment etc..
Fig. 1 is multiple hearth furnace of the prior art, and it is upright fixed circular body of heater, and shell 1 is a metallic cylinder, circle
It is refractory brick furnace lining 2 in cylinder shell, there is bell 3 top.Multiple hearth furnace liner complexity is overlapping, and its inner space is separated by vertical direction
Into tens of layer plane separations, the plane brick pallet 4 of laying fireproof bricks is both the dividing wall of plane separation, is support thing to be decomposed again
" the plane pallet " of material, whole furnace lining are formed with tens kinds of special shape laying fireproof bricks specially designed.
Body of heater center is a mechanical rotating shaft 5 from bottom of furnace body through straight-through top, and scrapper conveyor is mounted with rotating shaft,
Uniform several armshafts with scraper plate, stretch to from mechanical rotating shaft 5 and are covered in above " plane pallet " on scrapper conveyor central shaft
Treating material.In work, treating material continually enters " plane pallet " from charge door, and scrapper conveyor turns with rotating shaft
Dynamic, the scraper plate on armshaft stretched out on scrapper conveyor overturns the material on " flat pallet " back and forth, material is contacted heat smoke, makes original
Harmful element in material evaporates into flue gas in high temperature and drained, and treated material then flows from the discharge opening specially set
Go out.
In existing multiple hearth furnace, the furnace lining in body of heater is all built by laying bricks or stones with using quarl, the intensity of furnace lining and stably
Property all maintained by lateral pressure caused by mutually the reclining of supporting force between special shaped brick and special shaped brick edge.It is this to pile up formula
Furnace lining has obvious design defect at temperature and mechanical agitation, the state of the art of material disengaging in structural stability, main
Show the following aspects：
1., formed by a variety of special shape laying fireproof bricks due to refractory brick furnace lining, metal shell and refractory brick furnace lining it
Between can not be closely linked, in actual use, mechanical oscillation can cause to occur between shell and refractory brick furnace lining relative
It is mobile, therefore unstability integrally be present in multiple hearth furnace, and as the increase of usage time, this unstability also constantly increase
Add, show as the deformation of furnace lining and collapse；
2., " the plane pallet " that stretches to body of heater center that is formed with the extruding that mutually reclines at special shaped brick edge, shape is outer
Edge is thick, and center is thin, and outer rim lining thickness is more than 3 times of center lining thickness.And the outer rim position of " plane pallet " due to by
Nearly body of heater side wall, stability itself are just better than central location, and refractory material dosage is big, and " plane pallet " central concentrated load is big, fortune
Row condition is harsh, and refractory lining is frivolous much on the contrary, and the thinnest part at center only has about 115mm thickness, in weight of material, scraper plate
Under mechanical oscillation when machine agitation, central axis, structure can not be stablized, in addition the swell increment and expansion direction of " plane pallet "
Different with side wall furnace lining, in long-term use of, the centre of " plane pallet ", which turns into, is easiest to the position that damage is collapsed；
Once collapsing for " plane pallet " the 3rd, is produced, because the separation space among every layer " plane pallet " is very narrow and small,
The furnace lining of repairing " plane pallet " is extremely difficult in this narrow space, and industrial injury, maintenance cost easily occurs in maintenance
It is very high；
4th, because traditional furnace lining is formed by laying fireproof bricks, in order to keep the stabilization of furnace lining, the shape of furnace lining and enter
Material mouth, discharging opening, the quantity of refractory brick pallet, shape and position etc. are all severely restricted, it is difficult to be done according to being actually needed
Go out suitable change, be changed the strength stability that may influence whole furnace lining reluctantly, the application of multiple hearth furnace is therefore
It is restricted.
Utility model content
The plane pallet stability of multiple hearth furnace in the prior art is poor, easily collapse, repairs difficulty in order to solve for the utility model
With maintenance cost it is high the problem of, it is proposed that a kind of multiple hearth furnace castable furnace lining structure, overall group poured using high-strength castable
Furnace lining is closed, whole multiple hearth furnace liner and outer box hat are all connected, furnace lining is hung on outer box hat.
Multiple hearth furnace castable furnace lining structure of the present utility model includes shell, bell, furnace bottom, castable furnace lining, castable
Pallet, the castable furnace lining and castable pallet pour by refractory casting material to be formed.
The shell can be metallic cylinder or the other shapes designed as needed.
The bell covers whole furnace roof and closed.
The furnace bottom is located at the multiple hearth furnace bottom, for supporting whole furnace lining structure.
The castable furnace lining by refractory casting material one-piece casting inside the housing, and, shell closely coupled with shell
Inner surface setting has metal anchorage, for strengthening the bond strength of castable furnace lining and shell.
In the furnace lining structure, multiple castable pallets are provided with from top to bottom, so as to which burner hearth is divided into multiple separations,
The castable pallet is poured by refractory casting material to be formed, and metal anchorage is provided with, for strengthening the castable
The intensity of pallet.
One or more charging apertures can be arranged on bell and/or top layer separation, can also be arranged on top layer separation and
If on the dried layer separation below top layer separation, it can also be arranged on simultaneously below bell and/or top layer separation and top layer separation
If on dried layer separation.Treating material enters multiple hearth furnace via one or more charging apertures on bell and/or each layer separation.
One or more discharging openings can be arranged on furnace bottom and/or bottom separation, can also be arranged on bottom separation and
If on the dried layer separation above bottom separation, it can also be arranged on simultaneously above furnace bottom and/or bottom separation and bottom separation
If on dried layer separation.Material after processing discharges multiple hearth furnace through one or more discharging openings on furnace bottom and/or each layer separation.
The furnace lining structure is successively independently poured according to the position of castable pallet, and expansion clearance is provided between each layer,
And every layer of castable furnace lining and castable pallet are all divided into some blocks, and expansion clearance is also equipped between each block, use
In reducing in production process due to stress caused by thermal expansion.Fixed and connected by metal anchorage between individual block between each layer
Connect.
The castable pallet is provided with feed opening near circumference, or is formed between home position and mechanical rotating shaft
Feed opening, both castable pallets are arranged alternately, so that material is from top to bottom in flowing in a zigzag.
This furnace lining structure of the present utility model, it is the once change in hot equipment construction material and building structure, can
Thoroughly solve the problems, such as that existing laying fireproof bricks multiple hearth furnace lining stability is poor, be easily deformed and collapse, make not overhauling for multiple hearth furnace
Life-span greatly prolongs.It is in particular in the following aspects：
1）Furnace lining is formed by fire resisting pouring material one-piece casting, makes whole body of heater furnace lining one integrated mass, the stability of furnace lining and
Intensity relative to reclined by a variety of refractory brick pile up form, furnace lining is covered with the refractory brick furnace lining of brickwork joint and is significantly improved everywhere,
And due to having used metal anchorage, the adhesion of furnace lining and shell greatly enhances, and avoids the phase between shell and furnace lining
To movement, the stability of a system is remarkably reinforced.
2）Formed because flat pallet and furnace lining are all poured using refractory material, and be internally provided with metal anchorage,
The strength and stability of flat pallet greatly improves, and is not susceptible to collapse, and the life-span of not overhauling of multiple hearth furnace greatly prolongs.
3）Because castable pallet is significantly improved relative to the strength and stability of refractory brick pallet, even if needing
Furnace lining, which is changed a social system, or repaired can also courageously carry out partial dismantling replacing, safe and simple easy, and need not be to other
Part is removed, and material cost substantially reduces, and maintenance time greatly shortens, and idle cost is reduced, and can be substantially reduced enterprise
Burden.
4）Furnace lining of the present utility model can be according to being actually needed shape and charging aperture to furnace lining, discharging opening, cast
Quantity, shape and the position of material torr disk are improved, and can meet the needs of different industrial uses, can further expand more thoraxes
The application of stove.
Brief description of the drawings
Fig. 1 multiple hearth furnace furnace lining structures of the prior art；
Fig. 2 multiple hearth furnace castable furnace lining structures of the present utility model；
1st, shell, 2, refractory brick furnace lining, 3, bell, 4, clay brick plane pallet, 5, mechanical rotating shaft, 6, castable furnace lining,
7th, castable pallet, 8, metal anchorage.
Embodiment
Multiple hearth furnace castable furnace lining structure of the present utility model is as shown in Fig. 2 the multiple hearth furnace castable furnace lining structure bag
Include in shell 1, bell 3, furnace bottom, castable furnace lining 6, castable plane pallet 7, castable furnace lining 6 and castable plane pallet 7
It is provided with metal anchorage 8.
The shell 1 can be metallic cylinder or the other shapes designed as needed, and the shell 1 should have
Have appropriate thickness and intensity, can bear the pressure of furnace lining, and according to the disposal ability of design, have appropriate height and
Volume.
The bell 3 covers whole furnace roof and closed.
The furnace bottom is located at the multiple hearth furnace bottom, for supporting whole furnace lining structure.
The castable furnace lining 6 by refractory casting material one-piece casting inside shell 1, it is and closely coupled with shell 1, outside
The inner surface setting of shell 1 has metal anchorage 8, and metal anchorage 8 is inside castable furnace lining 6, for strengthening castable furnace lining 6
With the bond strength of shell 1.
Multiple castable pallets 7 are provided with multiple hearth furnace from top to bottom, so as to which burner hearth is divided into multiple separations.Pour into a mould material torr
The number of disk 7 determines according to design treatment ability, such as can be 2-20.The castable pallet 7 is by refractory casting material
Pour and form, be provided with metal anchorage 8, for strengthening the intensity of the castable pallet 7.The refractory casting material
Can be refractory casting material commonly used in the art or the refractory casting material for being needed and being customized according to technique, institute
It can be metal anchorage commonly used in the art or according to furnace lining structure and castable pallet to state metal anchorage
Shape and the metal anchorage designed.
The position of charging aperture, number and shape can be configured according to being actually needed.For example, one or more charging apertures
It can be arranged on bell and/or top layer separation, if the dried layer separation below top layer separation and top layer separation can also be arranged on
On, if the dried layer separation that can also be arranged on below bell and/or top layer separation and top layer separation simultaneously on.Such as in some feelings
Under condition, charging aperture can be arranged on top layer separation, can also be arranged on secondary top layer below top layer separation and top layer separation every
On cabin, if on the dried layer separation that can also be arranged on below top layer separation and top layer separation.Charging on bell and each layer separation
Mouth can be one or more.The shape of charging aperture can be circle, square, rectangle etc..Treating material via bell and/
Or one or more charging apertures on each layer separation enter multiple hearth furnace.
In actual production process, treating material can have an one or more, and one or more treating materials can be with
Enter multiple hearth furnace from a charging aperture, or enter multiple hearth furnace from different charging apertures.Such as in certain situations it is desirable to will be a variety of
Different treating materials adds multiple hearth furnace, this stove of the present utility model from different positions or in different processing stages
Lining structure is adapted to a variety of needs.
Treating material can typically undergo drying stage, warm-up phase, firing stage, cooling from top to bottom in multiple hearth furnace
Stage etc..In some cases, a part for the treatment of material can enter from the charging aperture of bell or top layer separation, another part
The material that need not be dried can be directly added into the thing that multiple hearth furnace or another part have been warmed up in the charging aperture of warm-up phase
Material can be directly entered multiple hearth furnace in the charging aperture of firing stage.
The position of discharging opening, number and shape can be configured according to being actually needed.For example, one or more discharging openings
It can be arranged on furnace bottom and/or bottom separation, if the dried layer separation above bottom separation and bottom separation can also be arranged on
On, if the dried layer separation that can also be arranged on above furnace bottom and/or bottom separation and bottom separation simultaneously on.Such as in some feelings
Under condition, one or more discharging openings can be arranged on bottom separation, can also be arranged on above bottom separation and bottom separation
Second bottom separation on, if on the dried layer separation that can also be arranged on above bottom separation and bottom separation.The shape of discharging opening
Can be circle, square, rectangle etc..Material after processing is through one or more discharging openings on furnace bottom and/or each layer separation
Discharge multiple hearth furnace.
In actual production, material can be discharged in different disposal stage or different disposal degree as needed.Example
Material can be such as discharged with can after firing stage, the thing of different temperatures can also be discharged in the different separations of cooling stage
Material.
According to technique needs, it can make castable pallet 7 that there is different shape and angle, with the stove that meets of maximum
Process requirements.Such as the castable pallet 7 can integrally be inclined upwardly certain angle, certain angle can also be tilted down,
It is or generally horizontal.The angle of inclination of the castable pallet 7 of each layer can be different.Therefore, multiple hearth furnace of the present utility model
Interior castable pallet 7 can have a variety of different combining forms in shape and angle, can meet different process requirements,
And in traditional refractory brick furnace lining structure, the refractory brick pallet certain angle that can only integrally be inclined upwardly can realize homeostasis
Property and the bearing capacity to material.
Before the multiple hearth furnace castable furnace lining structure is poured, the inner surface welding metal anchoring piece 8 first in shell 1,
The position of the metal anchorage 8 is determined by the position of the castable pallet 7.When pouring, according to the castable pallet 7
Position successively independently pour（I.e. every layer is all individually poured）, it is provided with expansion clearance between each layer, and every layer is poured
Material feeding furnace lining 6 and castable pallet 7 are all divided into some blocks, and expansion clearance is also equipped between each block, are produced for reducing
During due to stress caused by expansion.Linked between each block by metal anchorage.
The castable pallet 7 is provided with feed opening near deep circumference, or in center and machinery
Form feed opening between rotating shaft 5, both castable pallets are arranged alternately, at work, material in the presence of scrapper conveyor to
Deep circumference is mobile or is moved to center, then next layer of castable pallet is fallen on from feed opening, so that material
From top to bottom in flowing in a zigzag.
The special shaped brick of traditional refractory brick multiple hearth furnace furnace lining structure has tens kinds, and very high construction skill is needed when building by laying bricks or stones
Art, and special shaped brick in sintering procedure because shrinkage ratio difference has different degrees of deformation, can not between each special shaped brick
Perfection is bonded, therefore the multiple hearth furnace furnace lining structure less stable built by laying bricks or stones, and castable furnace lining described in the utility model uses
Refractory material one-piece casting forms, and difficulty of construction substantially reduces, and can be live according to the height of multiple hearth furnace, diameter and design
The conditions such as disposal ability are customized to furnace lining structure, have broken away from the limitation of special shaped brick.
Multiple hearth furnace castable furnace lining structure of the present utility model is that one-piece casting forms, and is fixed on using metal anchorage
On shell, stability greatly improves relative to refractory brick furnace lining structure, and castable pallet is the working lining of multiple hearth furnace, with refractory brick
Pallet is compared, and the stability and intensity of itself all improve a lot, therefore material bearing capacity and bears energy to mechanical oscillation
Power is all significantly improved.Traditional furnace lining structure is due to being formed with laying fireproof bricks in addition, in order to holding structure stability without
Method sets expansion clearance, under the high temperature conditions, can produce larger thermal expansion stress, plus Flow of Goods and Materials impact and mechanical oscillation
Deng the stability of furnace lining structure can be decreased obviously, therefore refractory brick pallet the weakest easily collapses, and of the present utility model
Castable furnace lining structure is divided into some blocks, and expansion clearance is reserved between each block, can offset and produce under the high temperature conditions
Swelling stress, therefore overcome the problem of refractory brick pallet easily collapses.
The life-span of not overhauling of traditional refractory brick furnace lining structure only has some months, and castable furnace lining knot of the present utility model
The long lifespan of not overhauling of structure reaches the several years, and the transformation of the way and repairing of furnace lining are also easy to.Meanwhile multiple hearth furnace of the present utility model pours
Material feeding furnace lining structure has broken the limitation of existing multiple hearth furnace profile and internal structure design, is advantageous to widen and excavate multiple hearth furnace
New application.Using several multiple hearth furnaces of castable furnace lining structure of the present utility model, running situation is good, achieves very high
Economic benefit and social benefit.
Claims (10)
1. a kind of multiple hearth furnace castable furnace lining structure, including shell（1）, bell（3）, furnace bottom, castable furnace lining（6）, multiple pour
Material feeding pallet（7）, it is characterised in that：The castable furnace lining（6）With castable pallet（7）Poured by refractory casting material and
Into shell（1）Inner surface be welded with metal anchorage（8）, the metal anchorage（8）Embedded in castable furnace lining（6）With pour
Material feeding pallet（7）In, the castable furnace lining（6）Pass through metal anchorage（8）With the shell（1）Close connection combines.
A kind of 2. multiple hearth furnace castable furnace lining structure according to claim 1, it is characterised in that：The multiple hearth furnace castable
Furnace lining structure is according to the multiple castable pallet（7）Position independently pour.
A kind of 3. multiple hearth furnace castable furnace lining structure according to claim 2, it is characterised in that：Every layer of castable furnace lining
（6）With castable pallet（7）All it is divided into some blocks, expansion clearance is also equipped between each block.
A kind of 4. multiple hearth furnace castable furnace lining structure according to claim 3, it is characterised in that：Pass through between the block
Metal anchorage（8）Connection.
A kind of 5. multiple hearth furnace castable furnace lining structure according to claim 1, it is characterised in that：The charging aperture of the multiple hearth furnace
It is arranged on bell（3）And/or on one or more layers separation at the top of multiple hearth furnace, the charging aperture is one or more, pending
Material enters multiple hearth furnace from one or more charging apertures.
A kind of 6. multiple hearth furnace castable furnace lining structure according to claim 1, it is characterised in that：The discharging opening of the multiple hearth furnace
It is arranged on furnace bottom and/or one or more layers separation of multiple hearth furnace bottom, the discharging opening is one or more, the thing after processing
Material discharges multiple hearth furnace from one or more discharging openings.
A kind of 7. multiple hearth furnace castable furnace lining structure according to claim 1, it is characterised in that：The shell（1）For gold
Belong to cylinder, or the other shapes designed as needed.
A kind of 8. multiple hearth furnace castable furnace lining structure according to claim 1, it is characterised in that：The castable pallet
（7）Entirety is inclined upwardly or entirety tilts down or is horizontal.
A kind of 9. multiple hearth furnace castable furnace lining structure according to claim 8, it is characterised in that：Different castable pallets
（7）Angle of inclination can be with identical or different.
A kind of 10. multiple hearth furnace castable furnace lining structure according to claim 1, it is characterised in that：The castable pallet
（7）Shape can be with identical or different.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720880733.8U CN206944718U (en) | 2017-07-20 | 2017-07-20 | A kind of multiple hearth furnace castable furnace lining structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720880733.8U CN206944718U (en) | 2017-07-20 | 2017-07-20 | A kind of multiple hearth furnace castable furnace lining structure |
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| Publication Number | Publication Date |
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| CN206944718U true CN206944718U (en) | 2018-01-30 |
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| CN201720880733.8U Active CN206944718U (en) | 2017-07-20 | 2017-07-20 | A kind of multiple hearth furnace castable furnace lining structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166965A (en) * | 2017-07-20 | 2017-09-15 | 洛阳市洛华粉体工程特种耐火材料有限公司 | A kind of multiple hearth furnace castable furnace lining structure |
-
2017
- 2017-07-20 CN CN201720880733.8U patent/CN206944718U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166965A (en) * | 2017-07-20 | 2017-09-15 | 洛阳市洛华粉体工程特种耐火材料有限公司 | A kind of multiple hearth furnace castable furnace lining structure |
| CN107166965B (en) * | 2017-07-20 | 2023-08-11 | 洛阳市洛华粉体工程特种耐火材料有限公司 | Multi-hearth furnace castable furnace lining structure |
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