CN209341847U - Sintering machine - Google Patents
Sintering machine Download PDFInfo
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- CN209341847U CN209341847U CN201821413893.2U CN201821413893U CN209341847U CN 209341847 U CN209341847 U CN 209341847U CN 201821413893 U CN201821413893 U CN 201821413893U CN 209341847 U CN209341847 U CN 209341847U
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Abstract
The utility model relates to sintering machine technical fields, provide a kind of sintering machine.Wherein, sintering machine heat dissipation recycling component includes the recovery tubes being arranged at the tail fairing of sintering machine, and recovery tubes include that at least one is used to be passed through the entrance of heat exchange medium and multiple for exporting the outlet of heat exchange medium；Multiple outlets are set gradually along the circulating direction of heat exchange medium.The sintering machine heat dissipation recycling component of the utility model can recycle the heat dissipation capacity of tail fairing, achieve the purpose that make whole production line energy-saving with this.Meanwhile operation temperature by tail fairing is significantly reduced, so that operative employee's labor intensity is declined, so as to improve operation of sintering machine environment.In addition, realizing the automatic paragraphing outflow of heat exchange medium, segmentation can be required to draw heat exchange medium according to the temperature and plant area that heat exchange medium heats in recovery tubes, further enhance heat utilization ratio.
Description
Technical field
The utility model relates to sintering machine technical field more particularly to a kind of sintering machines.
Background technique
As modern steel smelt process in core link, sintering in occupation of and its consequence.It is solution that it, which is acted on,
The miberal powder certainly come from mine is since granularity is small, poor air permeability, is easy to cause blast furnace sorting to collapse material so cannot directly enter furnace ironmaking
The problem of.By sintering, miberal powder may be become to larger granularity, structural porous, intensity also bigger sinter, so as to
Guarantee the direct motion of blast furnace.
Core equipment in sintering process is sintering machine, and structurally, sintering machine can be divided into head, fuselage and tail
Three parts, as shown in Figure 1.In production, the distribution device 3 that the miberal powder after ingredient, mixing first passes through head is uniform
On cloth to the trolley of sintering machine 1, the miberal powder layer with certain thickness is formed, then by the igniter 2 of head by top mine
Carbon dust in bisque is lighted, and the combustion zone with certain depth is formed, with moving ahead for trolley, the miberal powder layer on trolley into
Enter sintering machine body part, at this partially due to being influenced by the exhausting of lower part bellows 4, top formed combustion zone can gradually under
It moves, when combustion zone is displaced downwardly to miberal powder layer bottom position, whole miberal powders have been sintered into finished product sinter, and trolley has been also at this time
It is moved to rear of sintering machine position, is acted on by the specific device in tail fairing 5, trolley makees flip-flop movement, by finished product sinter
It unloads, and finished product sinter is crushed by single rod crusher 6 by the way that lower part in tail fairing 5 is arranged in, subsequent empty station vehicle is back to
Head continues next round circulation, as shown in Figure 2.
In sintering machine, tail fairing is a very crucial component equipment, and sinter unloaded here, is crushed
Movement, quality, the quality of heat insulation and the stability of production run of 5 sealing effect of tail fairing all decide whole sintering
The performance of machine.
As shown in Figure 2, tail fairing 5 is polymorphic structure to prior art rear of sintering machine cover structure, and one end and sintering machine rotate forward
Horizontal plane sealing, the other end and sintering machine reversion cambered surface sealing, achievable forward direction is mobile in tail fairing for trolley, overturns, is reversed
The movement such as mobile, is equipped with single rod crusher 6 simultaneously in tail fairing, to the broken material unloaded from overturning trolley.
The tail closure assembly of sintering machine under the prior art due to lacking the means of tailing radiant heat effective recycling,
In process of production, there are following two defects:
The first, heat dissipation capacity does not obtain effective recycling: since tailing radiations heat energy in process of production does not obtain very
Good effective use, therefore a large amount of heat outlet has been dispersed into tail ambient atmosphere.It is shown according to Field Production Data, tail
Cover temperature is generally between 150~200 DEG C, with a 360m2For scale sintering machine, tail fairing 1 year total heat dissipation capacity is about
15× 109Kcal is equivalent to 2140 tons of mark coals.This partial heat is as can efficiently utilized, for improving sintering machine system
Energy-saving index is very helpful；
The second, operating environment is poor by tail fairing: since tailing heat loss through radiation amount is not utilized effectively in tail fairing, therefore leading
It causes the operating environment by tail fairing very hot, especially summer, covers other maximum temperature up to 60-70 DEG C, be not only significantly greatly increased
The work load of operative employee, and increase security risk when production operation.
Utility model content
The utility model aims to solve at least one of technical problems existing in the prior art or related technologies.
One of purpose of the utility model is: providing a kind of sintering machine recuperation of heat component, solution is deposited in the prior art
The heat dissipation capacity of rear of sintering machine cover do not obtain the technology of operating environment difference by effective recycling and rear of sintering machine cover
Problem.
In order to realize the purpose, the utility model provides a kind of sintering machine heat dissipation recycling component, including setting is being sintered
Recovery tubes at the tail fairing of machine, the recovery tubes include that at least one is used to be passed through the entrance of heat exchange medium and more
A outlet for being used to export heat exchange medium；Multiple outlets are set gradually along the circulating direction of the heat exchange medium.
The sintering machine heat dissipation recycling component of the utility model is since it includes the recovery tubes being arranged at tail fairing, in turn
The heat dissipation capacity of tail fairing can be recycled, achieve the purpose that make whole production line energy-saving with this.Simultaneously as right
The waste heat of tail fairing is recycled, and operation temperature by tail fairing is significantly reduced, so that operative employee's labor intensity obtains down
Drop, so as to improve operation of sintering machine environment.Further, since there are the outlets of multiple heat exchange mediums along heat exchange medium
Circulating direction is set gradually, and realizes the automatic paragraphing outflow of heat exchange medium, can be according to heat exchange medium in recovery tubes
The temperature of heating and plant area require segmentation to draw heat exchange medium, further enhance heat utilization ratio.
Preferably, entrance described in the outlet positioned at most downstream.
Preferably, exporting between the entrance described in the most downstream to be provided with prevents the heat exchange medium from described
Entrance flows to the check-valves of the outlet of most downstream.
Preferably, the heat exchange medium is liquid, is provided with circulation between the outlet and the entrance of most downstream
Pump；
Alternatively,
The heat exchange medium is gas, is provided with circulating fan between the outlet and the entrance of most downstream.
Preferably, other than the outlet of most downstream, the remaining outlet is for connecting waste heat boiler；It is described enter
Mouth is for connecting plant area general pipeline.
Preferably, multiple exits are respectively arranged with temperature detecting element and control valve, the temperature detection member
Part is used to detect the temperature for the heat exchange medium that flows through or will flow through presently described outlet, and the control valve meets:
When the temperature for measuring the heat exchange medium reaches set temperature value, the presently described outlet of control valve control is opened
It opens, and the heat exchange medium is made to flow out the recovery tubes by presently described outlet；When the temperature of the heat exchange medium
When degree is not up to set temperature value, the control valve controls presently described outlet and closes, and makes the heat exchange medium
Continue on the recovery tubes flowing.
Preferably, the recovery tubes are the coiled pipe being arranged in the tail fairing.
Preferably, heat transfer fin is provided between the adjacent tubular segments of the coiled pipe.
Another purpose of the utility model is: providing a kind of sintering machine, including tail fairing and the heat dissipation of above-mentioned sintering machine
Recycle component.
The sintering machine of the utility model is radiated recycling component by using the above sintering machine, can effective intensified-sintered machine
Utilization rate of complementary energy reduces the energy consumption index of sintering machine, reduces the environment temperature by sintering machine, improves the operation ring by sintering machine
Border.Sintering machine under the prior art that compares, the sintering machine of the present embodiment it is more energy saving, economical, reliable with it is environmentally friendly, it is anticipated that
It has great potential in future market.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the sintering machine of the prior art；
Fig. 2 is the scheme of installation of the tail fairing of the prior art；
Fig. 3 is the scheme of installation of sintering machine heat dissipation recycling component in embodiment；
Fig. 4 be do not install heat transfer fin when Fig. 3 in A place to regard schematic diagram；
Fig. 5 be equipped with heat transfer fin when Fig. 3 in A place to regard schematic diagram；
The workflow schematic diagram of sintering machine heat dissipation recycling component in Fig. 6 embodiment；
In figure: 1, sintering machine；2, igniter；3, distribution device；4, lower part bellows；5, tail fairing；6, single roller is broken
Machine；7, sintering machine heat dissipation recycling component；71, coiled pipe；72, air inlet/liquid pipe；73, outlet/liquid pipe；731, first goes out gas/liquid
Pipe；732, the second outlet/liquid pipe；733, third outlet/liquid pipe；734, four outlets/liquid pipe；74, control valve；741, first
Control valve；742, the second control valve；743, third control valve；744, the 4th control valve；77, temperature detecting element；771, first
Temperature detecting element；772, second temperature detecting element；773, third temperature detecting element；774, the 4th temperature detecting element；
8, circulating fan/circulating pump；9, check-valves；10, conduct heat fin.
Specific embodiment
In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second ", " third " are used for description purposes only, and should not be understood as
Indication or suggestion relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Refer to Fig. 3, the sintering machine heat dissipation recycling component 7 of the present embodiment, including being arranged at the tail fairing 5 of sintering machine 1
Recovery tubes, the recovery tubes include that at least one is used to be passed through the entrance of heat exchange medium and multiple for heat outputting
The outlet of exchange media；Multiple outlets are set gradually along the circulating direction of the heat exchange medium.
The sintering machine heat dissipation recycling component 7 of the present embodiment is since it includes the recovery tubes being arranged at tail fairing 5, in turn
The heat dissipation capacity of tail fairing 5 can be recycled, achieve the purpose that make whole production line energy-saving with this.Simultaneously as
The waste heat of tail fairing 5 is recycled, 5 side operation temperature of tail fairing is significantly reduced, so that operative employee's labor intensity obtains
To decline, so as to improve 1 operating environment of sintering machine.Further, since there are the outlets of multiple heat exchange mediums along heat exchange
The circulating direction of medium is set gradually, and realizes the automatic paragraphing outflow of heat exchange medium, can be returned according to heat exchange medium in heat
The temperature heated in closed tube and plant area require segmentation to draw heat exchange medium, further enhance heat utilization ratio.
Wherein, preferably but necessarily positioned at the outlet entrance of most downstream, and then in the outlet of most downstream and entrance
Between form circulation loop.Certainly, the outlet of most downstream can be connected to form circulation loop with entrance by pipeline herein,
Any other mode can be used, as long as heat exchange medium is allowed to flow back into entrance by the outlet of most downstream.
In turn, the sintering machine heat dissipation recycling component 7 of the present embodiment, recovery tubes form a closed loop configuration, when measuring
It, can be by heat exchange medium by most when the heat exchange medium temperature in the exit of most downstream does not reach set temperature value
The outlet in downstream is passed into recovery tubes again through entrance.In the case of this kind, sintering machine heat dissipation recycling component 7 can be abundant
Using the recuperation of heat ability of heat exchange medium, most making full use of to heat exchange medium is realized.
Wherein, " outlet of most downstream " namely: be passed through heat exchange medium from entrance, heat exchange medium is along recovery tubes stream
It is dynamic, wherein the outlet that heat exchange medium finally passes through is exactly the outlet of most downstream.
Further, exporting on the circulation loop between entrance for most downstream is provided with check-valves 9, the check-valves 9
For preventing heat exchange medium from flowing to from entrance the outlet of most downstream, namely prevent the heat exchange medium reverse flow on circulation loop
It is dynamic.
In the present embodiment, heat exchange medium concrete type is unlimited, as long as can carry out heat exchange with tail fairing 5 and then realize
Recuperation of heat.
One of situation, heat exchange medium are liquid, such as heat exchange medium can be using being easy to get and at low cost
Water, can also using oil be used as heat exchange medium.In the case of this kind, it can be arranged between the outlet and entrance of most downstream and follow
Ring pump.Other positions can also be arranged in certain circulating pump.
Another situation, heat exchange medium are gas.In the case of this kind, circulation is set between the outlet and entrance of most downstream
Blower.Equally, circulating fan also can be set in other positions.
In the present embodiment, other than the outlet of most downstream, remaining outlet can connect waste heat boiler, and entrance can
To connect plant area general pipeline.In the case of this kind, sintering machine heat dissipation recycling component 7 provides heat exchange medium using the facility of plant area and returns
Heat is received, and then it can make full use of existing facility and save manufacturing cost.
In the present embodiment, each exit is respectively arranged with temperature detecting element 77 and control valve 74.Wherein, temperature
Detecting element 77 is for detecting the temperature for flowing through or will flowing through the heat exchange medium currently exported.Control valve 74 meets: when
When measuring the temperature of heat exchange medium and reach set temperature value, control valve 74 controls current port opening, and makes hot friendship
It changes medium and flows out recovery tubes by current outlet.When the temperature of heat exchange medium is not up to set temperature value, control
Valve 74 controls current outlet and closes, and heat exchange medium is made to continue on recovery tubes flowing.Wherein, going out for most downstream
For mouthful, when the temperature of heat exchange medium is not up to set temperature value, then heat exchange medium is flowed into again through entrance
Recovery tubes.
Please with further reference to Fig. 3, the quantity of outlet is four, is first to go out gas/liquid mouth, second go out gas/liquid mouth, the respectively
Three go out gas/liquid mouth and the 4th goes out gas/liquid mouth, and the quantity of entrance is one.In Fig. 6, first go out gas/liquid mouth connect the first outlet/
Liquid pipe 731, second, which goes out gas/liquid mouth, connects the second outlet/liquid pipe 732, and third goes out gas/liquid mouth connection third outlet/liquid pipe 733,
4th, which goes out gas/liquid mouth, connects four outlets/liquid pipe 734, and entrance connects air inlet/liquid pipe 72.In the first outlet/liquid pipe 731 to
The first control valve 741, the second control valve 742, third control valve 743 and the 4th control are respectively arranged in four outlets/liquid pipe 734
Valve 744 processed and the first temperature detecting element 771, second temperature detecting element 772, third temperature detecting element 773 and the 4th
Temperature detecting element 774.Wherein, the first outlet/liquid pipe 731 to third outlet/liquid pipe 733 accesses waste heat filtering, and the 4th goes out
Gas/liquid pipe 734 accesses air inlet/liquid pipe 72 by circulation loop.
Certainly, it exports and the quantity of entrance is not limited by citing herein.
Fig. 4 and Fig. 5 are referred to, the recovery tubes in the present embodiment are the coiled pipe 71 being arranged in the tail fairing 5.
Coiled pipe 71 and tail fairing 5 come into full contact with, and can preferably realize recuperation of heat.And heat exchange medium does snake along coiled pipe 71
Shape movement, becomes high-temperature medium with 5 radiation heat transfer of tail fairing in real time, so that the heat dissipation of tail fairing 5 is used more effectively.
Certainly, coiled pipe 71 can also be sticked in addition to being arranged in tail fairing 5 in the inner surface or appearance of tail fairing 5
Face, or coiled pipe 71 can also be arranged near tail fairing 5, as long as coiled pipe 71 may be implemented to tail fairing more than 5
Recuperation of heat.In addition, recovery tubes can also use any other structure in addition to using 71 structure of coiled pipe.
Fig. 5 is referred to, heat transfer fin 10 can be set between the adjacent tubular segments of coiled pipe 71, to reinforce the spoke of coiled pipe 71
Penetrate the effect of formula heat dissipation recycling.In Fig. 5, the inclined direction of the heat transfer fin 10 of adjacent row is different, and then is reinforcing coiled pipe 71
While structural strength, it can also be ensured that the heat radiation uniformity of coiled pipe 71.Certainly, conduct heat fin 10 structure type and point
Cloth is not limited by illustrating herein, and any heat transfer fin 10 should all include within the scope of protection of this application.
In the present embodiment, the cross-sectional area of recovery tubes is unlimited, and preferably but necessarily the cross-sectional area of recovery tubes is in
Round or rectangle.
By taking the sintering machine heat dissipation recycling component 7 of four outlets and an entrance as an example, using this kind of sintering machine heat dissipation recycling
When component 7 carries out recuperation of heat: normal temperature air or normal-temperature water first enter in coiled pipe 71 via air inlet/liquid pipe 72 and entrance, with
Latter edge coiled pipe 71 move, the heat dissipation capacity that gives out in tail fairing 5 is absorbed by radiation heat transfer on one side, finally becomes high
Warm air or high-temperature water vapor are discharged from outlet.Refer to Fig. 6, temperature detecting element 77 real-time monitoring, four exit heat exchanges
Temperature T1, T2, T3 and T4 of medium.If heat exchange medium (goes out in primary outlet along flow of media direction number first
Mouthful) temperature T1 arrived plant area and require temperature, then the control valve 74 in its excess-three exit is without work, it is only necessary to open the
The first control valve 741 at one outlet draws heat exchange medium from primary outlet.Similarly, if T2 or T3
It can be only achieved plant area and require temperature, then accordingly open the second control valve 742 or third control valve 743, close remaining control
Valve 74 draws the heat exchange medium of high temperature from corresponding outlet.
If T4 is still not up to plant area and requires, then shows that heat exchange medium needs once to be exchanged heat again, open the at this time
Heat exchange medium is led back again by circulation loop to entrance, carries out the cycle heat exchange of a new round by four control valves 744, until
Until reaching plant area's requirement.During being somebody's turn to do, circulating fan/circulating pump 8 can be opened, again by circulation loop by heat exchange medium
Secondary introduction air inlet/liquid pipe 72, carries out the cycle heat exchange of a new round, until reaching plant area and requiring.
If being required alternatively, T4 is still not up to plant area, heat exchange medium can also directly be passed through to currently outlet and drawn.
Further, the present embodiment also provides sintering machine 1, including above sintering machine heat dissipation recycling component 7.
The sintering machine 1 of the present embodiment is radiated recycling component 7 by using the above sintering machine, can effective intensified-sintered machine 1
Utilization rate of complementary energy reduces the energy consumption index of sintering machine 1, reduces the environment temperature on 1 side of sintering machine, improves the operation on 1 side of sintering machine
Environment.Sintering machine 1 under the prior art that compares, the sintering machine 1 of the present embodiment it is more energy saving, economical, reliable with it is environmentally friendly, can be with
Predicting it has great potential in future market.Also, the sintering machine of the present embodiment can be defeated by multiple and different outlets
Heat recovery efficiency can be improved in heat exchange medium out.
Further, the present embodiment also provides a kind of heat dissipation of sintering machine 1 recovery method, wherein in the tail fairing of sintering machine 1
Recovery tubes are provided at 5, and the circulating direction in recovery tubes along heat exchange medium sets gradually at least one entrance
With multiple outlets；The following steps are included:
Heat exchange medium is passed through in recovery tubes, so that heat exchange medium and tail fairing 5 carry out heat exchange and temperature liter
It is high；
Detect the temperature of each exit heat exchange medium:
For other outlets except the outlet of most downstream, when the temperature of heat exchange medium reach set temperature value when
It waits, the current outlet of unlatching is so that heat exchange medium flows out recovery tubes from current outlet；Otherwise, current outlet is closed so that heat is handed over
It changes medium and continues on recovery tubes flowing；
It outlet for most downstream will if the temperature of the heat exchange medium in exit does not reach set temperature value
Heat exchange medium is passed through in recovery tubes again through entrance, alternatively, making the outlet of the heat exchange medium by most downstream
Flow out the recovery tubes.
Wherein, it is respectively provided with temperature detecting element 77 and control valve 74 in each outlet port, if temperature detecting element 77
Corresponding region is flowed through with heat exchange medium, then temperature detecting element 77, which opens and will test data, is sent to corresponding control
Valve 74 processed, control valve 74 control the opening and closing currently exported according to detection data.
Embodiment of above is merely to illustrate the utility model, rather than limitations of the present invention.Although referring to implementation
The utility model is described in detail in example, those skilled in the art should understand that, to the technology of the utility model
Scheme carries out various combinations, modification or equivalent replacement, without departing from the spirit and scope of the technical scheme of the present invention, should all
Cover in the scope of the claims of the utility model.
Claims (8)
1. a kind of sintering machine, which is characterized in that radiate back including tail fairing and sintering machine heat dissipation recycling component, the sintering machine
Receiving component includes the recovery tubes being arranged at the tail fairing of sintering machine, and the recovery tubes include at least one for being passed through heat
The entrance of exchange media and multiple outlets for being used to export heat exchange medium；Multiple outlets are along the heat exchange medium
Circulating direction set gradually.
2. sintering machine according to claim 1, which is characterized in that entrance described in the outlet positioned at most downstream.
3. sintering machine according to claim 2, which is characterized in that export between the entrance described in the most downstream and set
It is equipped with the check-valves for the outlet for preventing the heat exchange medium from flowing to most downstream from the entrance.
4. sintering machine according to claim 2, which is characterized in that the heat exchange medium be liquid, most downstream it is described
Circulating pump is provided between outlet and the entrance；
Alternatively,
The heat exchange medium is gas, is provided with circulating fan between the outlet and the entrance of most downstream.
5. sintering machine according to claim 2, which is characterized in that other than the outlet of most downstream, remaining institute
Outlet is stated for connecting waste heat boiler；The entrance is for connecting plant area general pipeline.
6. sintering machine as claimed in any of claims 1 to 5, which is characterized in that distinguish in multiple exits
Be provided with temperature detecting element and control valve, the temperature detecting element for detect flow through or will flow through it is presently described go out
The temperature of the heat exchange medium of mouth, the control valve meet: when the temperature for measuring the heat exchange medium reaches setting temperature
When angle value, the control valve controls presently described port opening, and make the heat exchange medium by it is presently described go out
Mouth flows out the recovery tubes；When the temperature of the heat exchange medium is not up to set temperature value, the control valve control
It makes presently described outlet to close, and the heat exchange medium is made to continue on the recovery tubes flowing.
7. sintering machine as claimed in any of claims 1 to 5, which is characterized in that the recovery tubes are that setting exists
Coiled pipe in the tail fairing.
8. sintering machine according to claim 7, which is characterized in that be provided with heat transfer between the adjacent tubular segments of the coiled pipe
Fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821413893.2U CN209341847U (en) | 2018-08-30 | 2018-08-30 | Sintering machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821413893.2U CN209341847U (en) | 2018-08-30 | 2018-08-30 | Sintering machine |
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| CN209341847U true CN209341847U (en) | 2019-09-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028987A (en) * | 2018-08-30 | 2018-12-18 | 中冶长天国际工程有限责任公司 | Sintering machine and its heat dissipation recycling component and method |
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2018
- 2018-08-30 CN CN201821413893.2U patent/CN209341847U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028987A (en) * | 2018-08-30 | 2018-12-18 | 中冶长天国际工程有限责任公司 | Sintering machine and its heat dissipation recycling component and method |
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