CN204806898U - Sintering deposit timesharing subsection unload platform truck and temperature fraction discharge apparatus - Google Patents
Sintering deposit timesharing subsection unload platform truck and temperature fraction discharge apparatus Download PDFInfo
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- CN204806898U CN204806898U CN201520503826.XU CN201520503826U CN204806898U CN 204806898 U CN204806898 U CN 204806898U CN 201520503826 U CN201520503826 U CN 201520503826U CN 204806898 U CN204806898 U CN 204806898U
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Abstract
The utility model discloses a sintering deposit timesharing subsection platform truck of unloading, include: the platform truck body, breast board, comb board and wheel about being equipped with, the platform truck body is equipped with high -sintering ore deposit restraint mechanism, high -sintering ore deposit restraint mechanism includes: the tip baffle is located platform truck body sintering deposit holds the front end and the rear end in district, remove the grid section board, divide bilateral symmetry arrange in it is inside that platform truck body sintering deposit holds the district, will platform truck body sintering deposit holds to distinguish and separates that hold the district and the low -temperature sintering ore deposit holds district, its outer end edge for the high -sintering ore deposit the breast board internal surface upwards bend the back with the breast board rotates to be connected to be equipped with and rotate locking mechanical system. The unload mode of platform truck through improving the sintering deposit of should unloading can show and reduce the cold quick -witted handling capacity of ring, reduces the cost of the cold machine of ring, improves sintering deposit waste heat recovery volume. The utility model also discloses a be equipped with the unload warm fraction discharge apparatus of platform truck of sintering deposit timesharing subsection.
Description
Technical field
The utility model relates to metallurgical technology field, the sintering deposit discharging chassis particularly used in blast furnace ironmaking.The utility model also relates to the device for discharging being provided with described discharging chassis.
Background technology
Sintering deposit is a kind of primary raw material of blast furnace ironmaking.High temperature sintering ore deposit be iron ore, coke powder and some additives etc. after fully mixed, be evenly arranged on sintering machine, the upper surface of the bed of material is lighted by ignition furnace, under suction pressure effect, along raw materials for sintering layer gradually downwards burning until bottom the bed of material.
In bed of material sintering process, the upper strata bed of material that during lower floor's bed of material burning, required combustion air will complete through oversintering, combustion air is generally normal temperature air herein, upper strata sintering ore bed will be cooled in the process of the sintering ore bed sintered through upper strata, such sintering machine sinters ore bed upper layer material layer temperature to reduce gradually with sintering time, and lower floor's bed of material will raise gradually due to combustion material layer temperature, so the temperature of Different layer of the compost height sintering ore bed is different on sintering machine afterbody bed of material arbitrary cross-section, generally present upper strata temperature low lower floor temperature high, with the state that bed depth gradually changes.
At sintering machine afterbody, all sintering deposits discharging under gravity in chassis, fall in central cooler distribution device after single roll crusher fragmentation, sintering deposit is evenly arranged on circular cooler trolley, cooling-air enters circular cooler trolley inside from chassis bottom grate plate and carries out sufficient heat exchange with sintering deposit, while sintering deposit cooling, cooling-air is heated as heat smoke, and heat smoke is discharged from circular cooler trolley top.The initial temperature entering central cooler high temperature sintering ore deposit is the mean temperature of whole sintering deposit, and high temperature sintering ore deposit is cooled to normal temperature to be convenient to the techniques such as follow-up screening transport by central cooler.
The mode of current UTILIZATION OF VESIDUAL HEAT IN mainly arranges one or more collector mat and collects producing heat smoke in sintering deposit cooling procedure on circular cooler trolley top, collection heat smoke is sent into bootstrap system and is used.
Research shows, in sintering machine afterbody chassis, the temperature of sintering ore bed is comparatively large along short transverse difference in distribution, as shown in Figure 1, upper surface sintering ore bed temperature has been environment temperature, unload ore deposit temperature far below sintering deposit in central cooler, and lower floor's sintering ore bed temperature is due to combustion, is in the condition of high temperature.Fig. 2 is traditional process for cooling sintering deposit discharging schematic diagram, sintering ore bed in afterbody chassis 2 ＇ of sintering machine 1 ＇ is unified carries out discharging, enter single roll crusher 3 ＇ and carry out fragmentation, sintering machine is utilized to unload after ore bucket 4 ＇ collects, enter central cooler distribution device 5 ＇, utilizing distribution device to be evenly arranged in by sintering deposit after fragmentation on circular cooler trolley 6 ＇ and carry out cooling operations, there is following problem in this kind of mode:
One, low-temperature sintering ore bed temperature, far below central cooler discharge temp, carries out cooling operations without the need to entering central cooler, and traditional process for cooling adds the unnecessary sintering deposit treating capacity of central cooler.
Its two, current employing sintering deposit circulating cooling waste heat reclaiming process, the temperature entering the cooling-air of circular cooler trolley, higher than the temperature of low-temperature sintering ore bed, so low-temperature sintering ore bed will absorb the heat of cooling-air, reduces sintering deposit waste heat flue-gas temperature.
Therefore, how to decrease central cooler treating capacity, reduce the cost of central cooler, improving sintering deposit waste heat recovery volume, is those skilled in the art's technical issues that need to address.
Utility model content
The purpose of this utility model is to provide a kind of sintering deposit timesharing branch discharging chassis.This discharging chassis, by improving the discharge way of sintering deposit, can significantly reduce central cooler treating capacity, reduces the cost of central cooler, improves sintering deposit waste heat recovery volume.
Another object of the present utility model is to provide a kind of warm fraction device for discharging being provided with described sintering deposit timesharing branch discharging chassis.
For achieving the above object, the utility model provides a kind of sintering deposit timesharing branch discharging chassis, comprising:
Trolley body, is provided with left and right breast board, grate plate and wheel;
It is characterized in that, described trolley body is provided with high temperature sintering ore deposit constraint mechanism, and described high temperature sintering ore deposit constraint mechanism comprises:
End baffle, is positioned at the front-end and back-end that described trolley body sintering deposit holds district;
Mobile grid section plate, dividing is symmetrically arranged in described trolley body sintering deposit holds inside, district, described trolley body sintering deposit is held differentiation and is divided into accommodation district, high temperature sintering ore deposit and accommodation district, low-temperature sintering ore deposit, its outer end is rotationally connected with described breast board after described breast board inner surface upwards bending, and is provided with rotary locking mechanism.
Preferably, comprise rotation release mechanism further, being located at the emptying point place, high temperature sintering ore deposit after the upset of described trolley body, unlocking for making described rotary locking mechanism.
Preferably, described mobile grid section plate is provided with the first rotating junction, and described breast board is provided with the second rotating junction, and described first rotating junction is connected by axis of rotation with the second rotating junction.
Preferably, the axial direction of described rotating shaft is consistent with the direct of travel of described trolley body.
Preferably, described rotary locking mechanism comprises:
Stop pin, it is parallel to described rotating shaft, and stretches into the pin-and-hole of described first rotating junction and the second rotating junction, described mobile grid section plate and breast board is mutually locked;
Spring, be located between described second rotating junction and stop pin, it supports described stop pin and is in latched position.
Preferably, the limiting component that described rotation release mechanism comprises power part and driven by described power part, the outer end of described stop pin is provided with moves back pin portion, described limiting component has two kinds of duties, in the first duty, it is in the position of moving back pin portion described in backstop on the direct of travel of described trolley body, and in the second duty, it exits the position of moving back pin portion described in backstop.
Preferably, described limiting component is the driving lever that can carry out swinging under the driving of power part.
Preferably, the outer end of described stop pin is L-shaped, moves back pin portion described in the part formation of its bending.
Preferably, the height of described end baffle is lower than described left and right breast board, and the position of described mobile grid section plate support zone is lower than described end baffle.
For realizing above-mentioned second object, the utility model also provides a kind of temperature fraction device for discharging, comprises sintering machine and sintering machine unloads ore bucket, and the chassis of described sintering machine is the sintering deposit timesharing branch discharging chassis described in above-mentioned any one; Described sintering machine unloads ore bucket and comprises and be positioned at first of described sintering machine afterbody and unload ore bucket and second and unload ore bucket; Described first unloads the low-temperature sintering ore deposit discharge position that ore bucket corresponds to described sintering deposit timesharing branch discharging chassis, low-temperature sintering ore deposit disintegrating machine is established above it, described second unloads the high temperature sintering ore deposit discharge position that ore bucket corresponds to described sintering deposit timesharing branch discharging chassis, establishes high temperature sintering ore deposit disintegrating machine above it.
Timesharing branch provided by the utility model discharging sintering pallet, the discharging of timesharing branch can be carried out when the discharging of sintering machine afterbody, realizing high temperature sintering ore bed is separated (according to sintering ore bed Temperature Distribution in sintering pallet with low-temperature sintering ore bed, temperature is defined as low-temperature sintering ore bed lower than the sintering ore bed of central cooler discharge temp, temperature is defined as high temperature sintering ore bed higher than the sintering ore bed of central cooler discharge temp), thus the different process for cooling be applicable to is adopted to two kinds of bed of materials, wherein, no longer central cooler is entered after the fragmentation of low-temperature sintering ore bed, directly be sent to follow-up screening operation, only high temperature sintering ore bed enters central cooler and carries out cooling operations after fragmentation.
So can solve tradition cooling technological problems:
On the one hand, low-temperature sintering ore bed directly enters follow-up screening operation, decreases central cooler treating capacity, and central cooler area and air quantity can greatly reduce, and reduces construction cost and the operating cost of central cooler.
On the other hand, only high temperature sintering ore bed enters sintering deposit initial temperature raising in central cooler, and the temperature of heat smoke will significantly raise, and improve sintering deposit waste heat recovery volume.
Accompanying drawing explanation
Fig. 1 is the time dependent schematic diagram of sintering machine arbitrary height material layer temperature;
Fig. 2 is traditional process for cooling sintering deposit discharging schematic diagram;
Fig. 3 provides by the utility model the structural representation of sintering deposit timesharing branch discharging chassis;
Fig. 4 is the A-A view of Fig. 3;
The schematic diagram of Fig. 5 for carrying out unlocking after the discharging chassis upset of the timesharing of sintering deposit shown in Fig. 4 branch;
Fig. 6 by the utility model provided sintering deposit timesharing branch discharging chassis upset unlock after, the schematic diagram that mobile grid section plate outwards overturns under gravity;
Fig. 7 provides by the utility model the structural representation of warm fraction device for discharging.
In Fig. 1, Fig. 2:
Sintering machine 1 ＇ afterbody chassis 2 ＇ single roll crusher 3 ＇ sintering machine unloads ore bucket 4 ＇ central cooler distribution device 5 ＇ circular cooler trolley 6 ＇
In Fig. 3 to Fig. 7:
1. trolley body 11. breast board 12. grate plate 13. wheel 2. end baffle 3. moves grid section plate 41. first rotating junction 42. second rotating junction 5. rotating shaft 51. stop pin 52. spring 53. intelligence control system 54. driving lever 6. sintering machine 71. first and unloads ore bucket 72. second and unload ore bucket 81. double-geared roller crusher 82. single roll crusher 9. central cooler distribution device 10. central cooler material bed
Detailed description of the invention
In order to make those skilled in the art person understand the utility model scheme better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
To please refer to Fig. 3,4, Fig. 3 provides by the utility model the structural representation of sintering deposit timesharing branch discharging chassis; Fig. 4 is the A-A view of Fig. 3.
In a kind of detailed description of the invention, the trolley body 1 of the sintering deposit timesharing branch discharging chassis that the utility model provides is formed primarily of parts such as left and right breast board 11, grate plate 12 and wheels 13, in order to the discharging of timesharing branch can be carried out to sintering deposit, trolley body 1 is also provided with high temperature sintering ore deposit constraint mechanism.
Particularly, high temperature sintering ore deposit constraint mechanism is primarily of part compositions such as end baffle 2, mobile grid section plate 3, rotary locking mechanism, rotation release mechanisms.
End baffle 2 is positioned at the front-end and back-end that trolley body 1 sintering deposit holds district, the quantity of mobile grid section plate 3 is two pieces, dividing is symmetrically arranged in trolley body 1 sintering deposit holds inside, district, both horizontal support positions are in same plane, be positioned at the boundary of high temperature sintering ore bed and low-temperature sintering ore bed, in the mode of split, trolley body sintering deposit is held differentiation and be divided into accommodation district, high temperature sintering ore deposit and accommodation district, low-temperature sintering ore deposit, wherein, accommodation district, low-temperature sintering ore deposit is positioned at top, and accommodation district, high temperature sintering ore deposit is positioned at below.
The outer end of each mobile grid section plate 3 is along the upwards bending of breast board 11 inner surface, L-shaped on cross section, its horizontal support portion is longer than longitudinal component, the height of end baffle 2 is lower than left and right breast board 11, the horizontal support position of mobile grid section plate 3 lower than the upper edge of end baffle 2, so just define the grate plate 12 bottom by trolley body, rear ends baffle plate 2, left and right breast board 11 and top mobile grid section plate 3 jointly enclose the high temperature sintering ore deposit spatial accommodation formed.
The outer end of mobile grid section plate 3 upwards bending is provided with the first rotating junction 41 (quantity is two), breast board 11 is provided with the second rotating junction 42 (quantity is also two) along being in relevant position, first rotating junction 41 and the second rotating junction 42 are rotationally connected by rotating shaft 5 (representing with chain-dotted line in figure), and the axial direction of rotating shaft 5 is consistent with the direct of travel (see arrow) of trolley body 1, thus be installed on breast board 11 by rotating for mobile grid section plate 3.
Rotary locking mechanism between mobile grid section plate 3 and breast board 11 is formed primarily of stop pin 51 and spring 52, stop pin 51 is parallel to rotating shaft 5, be located in the pin-and-hole of the first rotating junction 41 and the second rotating junction 42, spring 52 is located between the second rotating junction 42 and stop pin 51, is in latched position for support lock rationed marketing 51.When stretching in the pin-and-hole of the first rotating junction 41 under the elastic force effect of stop pin 51 at spring 52, mobile grid section plate 3 can be locked mutually with breast board 11, when the elastic force that stop pin 51 overcomes spring 52 outwards exits the pin-and-hole of the first rotating junction 41, the locking of mobile grid section plate 3 and breast board 11 can be removed.
Locking is automatically terminated in order to enable rotary locking mechanism, also be provided with rotation release mechanism, the emptying point place, high temperature sintering ore deposit after trolley body 1 upset is located at by this rotation release mechanism, and be positioned at the outside of trolley body 1, primarily of intelligence control system 53, power part (not shown) and driving lever 54 are formed, the outer end of stop pin 51 is L-shaped, its dogleg section is formed and moves back pin portion, intelligence control system 53 can detect chassis and whether run to unlocked position, after detecting that chassis is in the unlocked position, it drives driving lever 54 to swing certain angle by power part, make driving lever 54 on the direct of travel of trolley body 1, be in the position that backstop moves back pin portion, after discharging to high temperature sintering ore deposit to be done, it drives driving lever 54 to reset by power part, driving lever 54 is exited position that backstop moves back pin portion.
Because intelligence control system 53 adopts current techique to realize, here just no longer launch to describe, in addition, except driving lever 54, other forms of limiting component can also be adopted, such as block, baffle plate etc., and the manner of execution of limiting component is not limited to swing, can also be rotary motion, stretching motion or rectilinear motion etc., it be all equal to the driving lever 54 of swing in result of use, can be used for realizing the utility model object.
Please refer to Fig. 5, the schematic diagram of Fig. 5 for carrying out unlocking after the discharging chassis upset of the timesharing of sintering deposit shown in Fig. 4 branch.
As shown in the figure, by the stop pin 51 being provided with spring 52, mobile grid section plate 3 and breast board 11 are locked, and the axial direction of stop pin 51 and the direct of travel of chassis consistent, and make stop pin 51 exit pin-and-hole by the mode of backstop.So, the motion that can make full use of chassis unlocks, and after unblock, stop pin 51 can continue Compress Spring 52, make mobile grid section plate 3 have time enough outwards to overturn in the compressible stroke of spring 52 to open, complete the discharging to high temperature sintering ore deposit, in the process, chassis can normally run and unaffected, and complete machine can operate continuously.
Here, another pin-and-hole can be offered on the first connecting portion 41 of mobile grid section plate 3, this pin-and-hole is relative with the pin-and-hole on the second connecting portion 42 of breast board 11 after opening in the upset downwards of mobile grid section plate 3, after treating discharging, stop pin 51 decontroled by driving lever 54, stop pin 51 resets under the effect of spring 52, insert this pin-and-hole, thus mobile grid section plate 3 is locked in enable possition, after chassis upwards overturns again, mobile grid section plate 3 is still in enable possition under the locking of stop pin 51, so that load new mineral aggregate, after accommodation district, high temperature sintering ore deposit fills, rotating release mechanism by another again makes stop pin 51 unlock, mobile grid section plate 3 drops on above accommodation district, high temperature sintering ore deposit under gravity again, then continue to load mineral aggregate to accommodation district, low-temperature sintering ore deposit.
Please also refer to Fig. 6, Fig. 6 by the utility model is provided sintering deposit timesharing branch discharging chassis after upset unlocks, the schematic diagram that mobile grid section plate outwards overturns under gravity.
As shown in the figure, the utility model arranges mobile grid section plate 3 on the basis of conventional sintering machine trolley structure and high temperature sintering ore bed retrains by end baffle 2, when making sintering pallet enter tail wheel generation upset, there is not discharging in high temperature sintering ore bed, only that discharging effect occurs low-temperature sintering ore bed under gravity, when sintering pallet continues the position moving to single roll crusher 82 place, mobile grid section plate 3 is opened, high temperature sintering ore bed generation discharging, thus achieve being separated of high temperature and low-temperature sintering ore bed.
Mobile grid section plate 3 utilizes rotating shaft 5 to be arranged on trolley board of sintering machine 11, without the need to making any change to the structure of sintering pallet self, rotating shaft 5 is installed on breast board 11 end, mobile grid section plate 3 autofitting under gravity, stop pin 51 automatically locks rotating shaft 5, thus has locked the position of mobile grid section plate 3; After the discharging of low-temperature sintering ore bed terminates, when chassis moves to the position at single roll crusher 82 place, intelligence control system is utilized to control the position of driving lever 54, utilize the operation of chassis self, stop pin 51 is opened, mobile grid section plate 3 is opened under gravity automatically, by the discharging of high temperature sintering ore bed, so realizes being separated of high temperature and low-temperature sintering ore bed.As shown in Figure 7, enter double-geared roller crusher 81 after the discharging of low-temperature sintering ore bed and carry out fragmentation, enter single roll crusher 82 after the discharging of high temperature sintering ore bed and carry out fragmentation, so maintain the released state of high temperature and low-temperature sintering ore bed.
Because low-temperature sintering ore bed directly enters follow-up screening operation, decrease central cooler treating capacity, central cooler area and air quantity can greatly reduce, reduce construction cost and the operating cost of central cooler, meanwhile, only high temperature sintering ore bed enters central cooler, and in central cooler, sintering deposit initial temperature improves, the temperature of heat smoke will significantly raise, and improve sintering deposit waste heat recovery volume.
Please refer to Fig. 7, Fig. 7 provides by the utility model the structural representation of warm fraction device for discharging.
Except above-mentioned sintering deposit timesharing branch discharging chassis, the utility model also provides a kind of temperature fraction device for discharging, comprise sintering machine 6 and sintering machine unloads ore bucket, wherein, the chassis of sintering machine 6 is sintering deposit timesharing branch discharging chassis above, and sintering machine unloads ore bucket and comprises and be positioned at sintering machine 6 afterbody tiltedly first the unloading ore bucket 71 and be positioned at second immediately below sintering machine afterbody and unload ore bucket 72 of below; First unloads above ore bucket 71 and establishes double-geared roller crusher 81, and second unloads above ore bucket 72 and establish single roll crusher 82, and central cooler distribution device 9 and central cooler material bed 10 are established in below, and all the other structures please refer to prior art, repeat no more herein.
Certainly, sinter cooler is not limited to circular cooler, can also be vertical cooling machine or straight line cooler etc., and, first unload ore bucket 71 and second unload ore bucket 72 position and be not exclusively confined to tiltedly below and immediately below, can adjust as required.
Above sintering deposit timesharing branch discharging chassis provided by the utility model and warm fraction device for discharging are described in detail.Apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands core concept of the present utility model for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
Claims (10)
1. a sintering deposit timesharing branch discharging chassis, comprising:
Trolley body (1), is provided with left and right breast board (11), grate plate (12) and wheel (13);
It is characterized in that, described trolley body (1) is provided with high temperature sintering ore deposit constraint mechanism, and described high temperature sintering ore deposit constraint mechanism comprises:
End baffle (2), is positioned at the front-end and back-end that described trolley body sintering deposit holds district;
Mobile grid section plate (3), dividing is symmetrically arranged in described trolley body sintering deposit holds inside, district, described trolley body sintering deposit is held differentiation and is divided into accommodation district, high temperature sintering ore deposit and accommodation district, low-temperature sintering ore deposit, its outer end is rotationally connected with described breast board (11) after described breast board (11) inner surface upwards bending, and is provided with rotary locking mechanism.
2. sintering deposit timesharing branch according to claim 1 discharging chassis, it is characterized in that, comprise rotation release mechanism further, being located at the emptying point place, high temperature sintering ore deposit after described trolley body (1) upset, unlocking for making described rotary locking mechanism.
3. sintering deposit timesharing branch according to claim 2 discharging chassis, it is characterized in that, described mobile grid section plate (3) is provided with the first rotating junction (41), described breast board (11) is provided with the second rotating junction (42), and described first rotating junction (41) and the second rotating junction (42) are rotationally connected by rotating shaft (5).
4. sintering deposit timesharing branch according to claim 3 discharging chassis, is characterized in that, the axial direction of described rotating shaft (5) is consistent with the direct of travel of described trolley body (1).
5. sintering deposit timesharing branch according to claim 4 discharging chassis, it is characterized in that, described rotary locking mechanism comprises:
Stop pin (51), it is parallel to described rotating shaft (5), and stretch into the pin-and-hole of described first rotating junction (41) and the second rotating junction (42), described mobile grid section plate (3) and breast board (11) are locked mutually;
Spring, be located between described second rotating junction (42) and stop pin (51), it supports described stop pin (51) and is in latched position.
6. sintering deposit timesharing branch according to claim 5 discharging chassis, it is characterized in that, the limiting component that described rotation release mechanism comprises power part and driven by described power part, the outer end of described stop pin (51) is provided with moves back pin portion, described limiting component has two kinds of duties, in the first duty, it is in the position of moving back pin portion described in backstop on the direct of travel of described trolley body (1), in the second duty, it exits the position of moving back pin portion described in backstop.
7. sintering deposit timesharing branch according to claim 6 discharging chassis, is characterized in that, described limiting component is the driving lever (54) that can carry out swinging under the driving of power part.
8. sintering deposit timesharing branch according to claim 6 discharging chassis, it is characterized in that, the outer end of described stop pin (51) is L-shaped, moves back pin portion described in the part formation of its bending.
9. the sintering deposit timesharing branch discharging chassis according to any one of claim 1 to 8, it is characterized in that, the height of described end baffle (2) is lower than described left and right breast board (11), and the position of described mobile grid section plate (3) support zone is lower than the upper end of described end baffle (2).
10. a warm fraction device for discharging, comprises sintering machine and sintering machine unloads ore bucket, it is characterized in that, the chassis of described sintering machine is the sintering deposit timesharing branch discharging chassis described in any one of the claims 1 to 7; Described sintering machine unloads ore bucket and comprises and be positioned at first of described sintering machine afterbody and unload ore bucket (71) and second and unload ore bucket (72); Described first unloads the low-temperature sintering ore deposit discharge position of ore bucket (71) corresponding to described sintering deposit timesharing branch discharging chassis, low-temperature sintering ore deposit disintegrating machine is established above it, described second unloads the high temperature sintering ore deposit discharge position of ore bucket (72) corresponding to described sintering deposit timesharing branch discharging chassis, establishes high temperature sintering ore deposit disintegrating machine above it.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548420A (en) * | 2018-04-18 | 2018-09-18 | 湖南理工学院 | A kind of isothermal discharging sintering machine and discharge method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548420A (en) * | 2018-04-18 | 2018-09-18 | 湖南理工学院 | A kind of isothermal discharging sintering machine and discharge method |
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