CN215447434U - Spodumene concentrate preheating device - Google Patents
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- CN215447434U CN215447434U CN202120852743.7U CN202120852743U CN215447434U CN 215447434 U CN215447434 U CN 215447434U CN 202120852743 U CN202120852743 U CN 202120852743U CN 215447434 U CN215447434 U CN 215447434U
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Abstract
The utility model discloses a spodumene concentrate preheating device, which comprises: the ore bin is provided with a first feeding hole and a first discharging hole, the upper end of the ore bin is provided with an ore bin inlet pipe, and the outlet of the ore bin inlet pipe is communicated with the first feeding hole; the preheater is provided with a preheating cavity, a second feeding hole, a first smoke outlet and a second discharge hole, each of the second feeding hole, the first smoke outlet and the second discharge hole is communicated with the preheating cavity, and the second feeding hole is communicated with the first discharge hole; the smoke pipeline is provided with a first smoke inlet and a second smoke outlet, and the first smoke inlet is communicated with the first smoke outlet; and the feeding elephant trunk is provided with a third feeding hole and a third discharging hole. Therefore, by using the spodumene concentrate preheating device according to the embodiment of the present invention, it is possible to reduce the manufacturing cost of the rotary kiln for firing spodumene pellets and reduce the energy consumption for firing spodumene pellets.
Description
Technical Field
The utility model relates to the field of spodumene production and processing, in particular to a spodumene concentrate preheating device.
Background
Lithium is a novel energy and strategic resource, and is widely applied in the fields of lithium batteries, ceramics, glass, medicines, metallurgy and the like, and in recent years, with the vigorous development of the lithium battery industry, the demand of lithium is explosively increased. The extraction of lithium from spodumene is the main lithium production process at present and is also the main domestic lithium source. The technology for producing lithium salt by using spodumene as raw material includes limestone roasting method, soda ash pressure boiling method, conversion roasting-acidification roasting method, etc., in which the conversion roasting-acidification roasting method is the most mature production technology at present, and its product quality is good and production cost is low. The main process route is to adopt a rotary kiln as roasting equipment, transform alpha-type spodumene concentrate into beta-type spodumene concentrate roasting material by high-temperature roasting (roasting temperature is 1000-1100 ℃), cool the beta-type spodumene concentrate roasting material, crush and grind the beta-type spodumene concentrate by a mill, mix the beta-type spodumene concentrate with concentrated sulfuric acid, and roast the beta-type spodumene concentrate in acid at 400 ℃ to obtain clinker.
In the related art, in order to further improve the heat utilization efficiency in the spodumene roasting process, a patent with the application number of CN201420195369.8 provides a spodumene roasting transformation, material distribution and cooling recovery production device, a three-stage suspension preheating system is added at the feed end of a rotary kiln, and the waste heat in waste gas is recovered. Patent application No. CN201821228826.3 proposes a patent of "a novel preheater system applied to spodumene roasting process", which can reduce the external circulation of hot dust and improve the heat recovery efficiency of the preheater according to the patent expression.
The above technologies are production technologies for rough-grain spodumene concentrate, and when the particle size of spodumene is less than 0.15mm and even finer, fine-powder spodumene is easy to melt when the roasting temperature is higher than 1000 ℃, so that the ring formation of the rotary kiln is serious, and the production cannot be carried out. The roasting temperature is controlled to be 800-900 ℃, the ring formation risk can be reduced, but the transformation rate of the spodumene concentrate is low, and the recovery efficiency of lithium is influenced. None of the above patents addresses the problem of fine particle spodumene concentrate roasting. Lithium concentrate is bonded and granulated for some domestic enterprises, and fine-particle spodumene concentrate is roasted by adopting a long kiln, so that the problems of ring formation and low transformation rate are solved, but the following problems exist: (1) the heat of the tail gas cannot be recovered, the tail gas is directly discharged into the atmosphere, the energy is wasted, the environment pollution is caused, and compared with the lithium salt produced by the conversion roasting of coarse-grained lithium concentrate, the lithium salt has no cost competitive advantage. (2) The length-diameter ratio of the rotary kiln reaches (20-25): 1, the length-diameter ratio of the rotary kiln is larger, so that the material retention time is long, and the investment of the rotary kiln is overlarge.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an embodiment of the present invention proposes a spodumene concentrate preheating apparatus.
According to the spodumene concentrate preheating device of the embodiment of the utility model, the spodumene concentrate preheating device comprises:
the ore bin is provided with a first feeding hole and a first discharging hole, the upper end of the ore bin is provided with an ore bin inlet pipe, and the outlet of the ore bin inlet pipe is communicated with the first feeding hole;
the preheater is provided with a preheating cavity, a second feeding hole, a first smoke outlet and a second discharge hole, each of the second feeding hole, the first smoke outlet and the second discharge hole is communicated with the preheating cavity, and the second feeding hole is communicated with the first discharge hole;
the smoke pipeline is provided with a first smoke inlet and a second smoke outlet, and the first smoke inlet is communicated with the first smoke outlet; and
the feeding elephant trunk, the feeding elephant trunk has third feed inlet and third discharge gate, the third feed inlet with the second discharge gate intercommunication, the third discharge gate be suitable for with the mineral aggregate import intercommunication of rotary kiln.
Therefore, by using the spodumene concentrate preheating device according to the embodiment of the present invention, it is possible to reduce the manufacturing cost of the rotary kiln for firing spodumene pellets and reduce the energy consumption for firing spodumene pellets.
In some embodiments, the preheating chamber comprises a body and a discharge channel, a first end of the discharge channel is communicated with the body, a second end of the discharge channel forms the second discharge hole, the bottom wall surface of the discharge channel is obliquely arranged, and the bottom of the second end of the discharge channel is positioned below the bottom of the first end of the discharge channel.
In some embodiments, the bottom wall surface of the tapping channel is angled from the horizontal by an angle of between 5 ° and 15 °.
The spodumene concentrate preheating device further comprises a pushing piece, wherein the pushing piece comprises a fixing portion and a telescopic portion, at least one part of the telescopic portion is located in the discharging channel, and the telescopic portion is arranged on the fixing portion in a telescopic mode along the direction close to the second discharging hole and the direction far away from the second discharging hole.
In some embodiments, the direction of movement of the telescoping portion is parallel to the bottom wall of the tapping channel, the telescoping portion is adjacent to the bottom wall of the tapping channel or the telescoping portion is in contact with the bottom wall of the tapping channel.
The spodumene concentrate preheating device further comprises a discharging chute, the upper end portion of the discharging chute is connected with the first discharging hole, the lower end portion of the discharging chute is connected with the second feeding hole, a first valve and a second valve are arranged on the discharging chute, and the first valve and the second valve are arranged at intervals in the vertical direction.
In some embodiments, the number of the preheaters is multiple, the preheaters are arranged together in a ring shape, the preheaters are arranged around the third feeding port, and optionally, the number of the preheaters is between 4 and 20.
In some embodiments, the preheater includes an inner ring, an outer ring and a plurality of partition walls, the inner ring includes an inner ring body and an inner ring bottom plate, the outer ring includes an outer ring body and an outer ring bottom plate, the plurality of partition walls are connected with the inner ring and the outer ring to divide the preheater into a plurality of cavities, the inner ring is sleeved in the outer ring, the inner ring body and the outer ring body are oppositely arranged in an inner and outer direction, the inner ring bottom plate and the outer ring bottom plate are oppositely arranged in an up and down direction, and the inner ring bottom plate is located above the outer ring bottom plate.
In some embodiments, the third feed port is located above the third discharge port.
The utility model also provides a rotary kiln comprising:
a kiln body having a mineral aggregate inlet; and
the spodumene concentrate preheating device is the spodumene concentrate preheating device, and a third discharge hole of a feeding chute of the spodumene concentrate preheating device is communicated with the mineral aggregate inlet.
Drawings
Fig. 1 is a schematic structural view of a front view of a spodumene concentrate preheating apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a top view of a spodumene concentrate preheating apparatus according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
A spodumene concentrate preheating apparatus 1000 according to an embodiment of the present invention is described below with reference to the accompanying drawings. As shown in fig. 1 and 2, a spodumene concentrate preheating apparatus 1000 according to an embodiment of the present invention includes a ore bin 100, a preheater 200, a flue gas duct 300, and a feed chute 400.
The ore bin 100 is provided with a first feeding hole 110 and a first discharging hole 120, the upper end of the ore bin 100 is provided with an ore bin inlet pipe, and the outlet of the ore bin inlet pipe is communicated with the first feeding hole 110. The preheater 200 has a preheating chamber 210, a second inlet port 220, a first outlet port 230, and a second outlet port 240. Each of the second inlet 220, the first outlet 230, and the second outlet 240 is in communication with the preheating chamber 210, and the second inlet 220 is in communication with the first outlet 120. The smoke duct 300 has a first smoke inlet 310 and a second smoke outlet 320, the first smoke inlet 310 being in communication with the first smoke outlet 230. The feed chute 400 has a third feed opening 410 and a third discharge opening 420, the third feed opening 410 being in communication with the second discharge opening 240, the third discharge opening 420 being adapted to be in communication with the mineral aggregate inlet 710 of the rotary kiln.
The spodumene pellets are formed after the fine-particle spodumene concentrate is bonded and granulated, the particle size of the fine-particle spodumene concentrate is smaller than 0.15mm, the particle size of the coarse-particle spodumene concentrate is generally smaller than or equal to 1mm, the particle size of the spodumene pellets is controlled to be between 10mm and 50mm, the particle size of the spodumene pellets is larger than that of spodumene ore bodies, the problems that the fine-particle spodumene concentrate is formed in a rotary kiln during roasting and the transformation rate is low are solved, but the fine-particle spodumene concentrate is long in retention time after entering the rotary kiln, the length-diameter ratio of the rotary kiln is required to be larger, and the rotary kiln investment is overlarge.
The spodumene concentrate preheating apparatus 1000 according to the embodiment of the present invention allows spodumene pellets to be heated in the preheating chamber 210 of the preheater 200 before entering the rotary kiln by providing the preheater 200 between the ore bin 100 and the feed chute 400. Wherein, there is great clearance between the spodumene pellet, and the hot flue gas in the rotary kiln enters into preheating chamber 210 through feeding elephant trunk 400, and hot flue gas passes through the clearance between the spodumene pellet back and discharges out preheating chamber 210 through flue gas pipeline 300. Can utilize hot flue gas to preheat spodumene pellet from this to improve the temperature of spodumene pellet, so that reduce the time of spodumene pellet calcination in rotary kiln 700, and then can reduce rotary kiln 700 slenderness ratio, thereby reduce equipment and reduce the energy that spodumene pellet calcination consumed.
Therefore, by using the spodumene concentrate preheating device 1000 according to the embodiment of the present invention, it is possible to reduce the manufacturing cost of the rotary kiln 700 for firing spodumene pellets, and to reduce the energy consumption for firing spodumene pellets.
The present invention also provides a rotary kiln 700, and the rotary kiln 700 according to the embodiment of the present invention includes a kiln body 720 and a spodumene concentrate preheating device 1000 according to the embodiment of the present invention.
The kiln body 720 has a mineral aggregate inlet 710. The third discharge port 420 of the feed chute 400 of the spodumene concentrate preheating apparatus 1000 of the embodiment of the present invention communicates with the mineral aggregate inlet 710.
As shown in fig. 1 and 2, a spodumene concentrate preheating apparatus 1000 according to an embodiment of the present invention includes a ore bin 100, a preheater 200, a flue gas duct 300, and a feed chute 400.
The ore bin 100 is provided with a first feeding hole 110 and a first discharging hole 120, the upper end of the ore bin 100 is provided with an ore bin inlet pipe, and the outlet of the ore bin inlet pipe is communicated with the first feeding hole 110. The ore bin 100 is a discharging device, and spodumene pellets can be arranged in the ore bin 100.
The spodumene concentrate preheating apparatus 1000 according to an embodiment of the present invention further includes a blanking chute 130. The upper end of the discharging chute 130 is connected with the first discharging hole 120, and the lower end of the discharging chute 130 is connected with the second feeding hole 220 of the preheater 200. The blanking chute 130 is provided with a first valve 131 and a second valve 132, and the first valve 131 and the second valve 132 are arranged at intervals in the vertical direction.
In the discharging process, in the first stage, the first valve 131 is opened and the second valve 132 is closed, so that the spodumene pellets enter the discharging chute 130 from the ore bin 100. In the second stage, the first valve 131 is closed, the second valve 132 is closed, and the discharging chute 130 has a predetermined space, so that a predetermined amount of spodumene pellets enter the discharging chute 130. In the third stage, the first valve 131 is closed, the second valve 132 is opened, and a predetermined number of spodumene pellets in the blanking chute 130 enter the second feed inlet 220 from the lower end of the blanking chute 130, i.e., the predetermined number of spodumene pellets enter the preheater 200 from the lower end of the blanking chute 130. The discharge chute 130 controls the amount of spodumene pellets entering the preheater 200 through the first valve 131 and the second valve 132.
As shown in fig. 1, the preheater 200 has a preheating chamber 210, a second inlet 220, a first outlet 230, and a second outlet 240. Each of the second inlet 220, the first outlet 230, and the second outlet 240 is in communication with the preheating chamber 210, and the second inlet 220 is in communication with the first outlet 120. A predetermined number of spodumene pellets enter the preheater 200 from the lower end of the feed chute 130 and are then stacked in the preheating chamber 210. The up-down direction is shown by arrow a in fig. 1.
The smoke duct 300 has a first smoke inlet 310 and a second smoke outlet 320, the first smoke inlet 310 being in communication with the first smoke outlet 230. The feed chute 400 has a third feed opening 410 and a third discharge opening 420, the third feed opening 410 being in communication with the second discharge opening 240, the third discharge opening 420 being adapted to be in communication with the mineral aggregate inlet 710 of the rotary kiln 700.
The hot flue gas in the rotary kiln 700 enters the third discharge port 420 from the mineral aggregate inlet 710 of the kiln body 720, i.e. the hot flue gas enters the feeding chute 400 from the kiln body 720. The third feeding mouth 410 of the hot flue gas in the feeding chute 400 enters the second discharging mouth 240, i.e. the hot flue gas in the feeding chute 400 enters the preheating chamber 210 through the second discharging mouth 240. The hot flue gas in the preheating chamber 210 passes through the gaps between the spodumene pellets and then enters the first flue gas inlet 310 through the first flue gas outlet 230, that is, the hot flue gas in the preheating chamber 210 enters the flue gas pipeline 300 through the first flue gas outlet 230, and the hot flue gas entering the flue gas pipeline 300 is discharged out of the flue gas pipeline 300 through the second flue gas outlet 320.
In the process that hot flue gas passes through gaps among the spodumene pellets, the hot flue gas preheats the spodumene pellets, so that the temperature of the spodumene pellets is increased, and the roasting time of the spodumene pellets in the rotary kiln 700 is shortened. Further reducing the length-diameter ratio of the rotary kiln 700, and achieving the purposes of reducing the equipment cost and reducing the energy consumed by roasting the spodumene pellets.
As shown in fig. 1, in some embodiments, the preheating chamber 210 includes a body 212 and a discharge channel 211, a first end of the discharge channel 211 is communicated with the body 212, and a second end of the discharge channel 211 forms a second discharge port 240, wherein a bottom wall surface of the discharge channel 211 is obliquely arranged. The bottom of the second end of the discharge channel 211 is located below the bottom of the first end of the discharge channel 211, that is, the bottom wall surface of the second end of the discharge channel 211 is located below the bottom wall surface of the first end of the discharge channel 211, that is, the discharge channel 211 extends obliquely downward from the body 212, thereby facilitating the sliding of the spodumene pellets from the preheating chamber 210 into the feed chute 400 after preheating.
The included angle between the bottom wall surface of the discharge channel 211 and the horizontal plane is between 5 and 15 degrees. Therefore, not only can the spodumene pellets slide into the feeding chute 400 from the preheating cavity 210 after being preheated, but also the gradient of the bottom wall surface of the discharging channel 211 is small, so that a part of the spodumene pellets can be stacked in the preheating cavity 210.
As shown in fig. 1, in some embodiments, a spodumene concentrate preheating apparatus 1000 according to embodiments of the present invention further includes a pusher 500.
The pushing member 500 comprises a fixing portion 510 and a telescopic portion 520, at least a portion of the telescopic portion 520 is located in the discharging passage 211, and the telescopic portion 520 is telescopically arranged on the fixing portion 510 along a direction adjacent to the second discharging hole 240 and a direction away from the second discharging hole 240. The extension part 520 pushes the material when moving in a direction adjacent to the second discharge port 240, and the extension part 520 prepares for pushing the material when moving in a direction away from the direction adjacent to the second discharge port 240.
For example, the telescopic part 520 is reciprocally movably disposed on the fixing part 510 between a pushing position and a retracted position, and a pushing end of the telescopic part 520 at the pushing position is adjacent to the second discharging hole 240 with respect to a pushing end of the telescopic part 520 at the retracted position. The telescopic part 520 reciprocates between the pushing position and the retracting position and pushes the spodumene pellets in the discharging channel 211 to the second discharging port 240, so that the preheated spodumene pellets in the preheating chamber 210 enter the feeding chute 400.
After the spodumene pellets in the preheating chamber 210 reach the preheating time, the telescopic part 520 can move back and forth between the pushing position and the retracting position to push the spodumene pellets in the preheating chamber 210 to the second discharge port 240. Then, the first valve 131 is closed, the second valve 132 is opened, the predetermined number of spodumene pellets in the blanking chute 130 enter the second feed inlet 220 from the lower end of the blanking chute 130, that is, the predetermined number of spodumene pellets enter the preheater 200 from the lower end of the blanking chute 130 for heating, and after the preheating time of the spodumene pellets in the preheater 200 is reached, the spodumene pellets are pushed to the second discharge outlet 240 by the telescopic part 520.
In some embodiments, the moving direction of the telescopic part 520 is parallel to the bottom wall surface of the discharging channel 211, so that spodumene pellets on the bottom wall surface of the discharging channel 211 are pushed to the second discharging hole 240. The expansion part 520 is adjacent to the bottom wall surface of the discharging channel 211 or the expansion part 520 is in contact with the bottom wall surface of the discharging channel 211, so that spodumene pellets are not piled up on the bottom wall surface of the discharging channel 211.
In some embodiments, the preheater 200 is provided in plurality, the plurality of preheaters 200 are arranged together in a ring shape, and each preheater 200 is provided with a first discharge port 120 matched with a second discharge port 220. A plurality of preheaters 200 are disposed around the third feed port 410, and optionally, the number of preheaters 200 is between 4 and 20. The different preheaters 200 cannot be influenced by each other, and spodumene pellets in the different preheaters 200 can be independently controlled to enter the feeding chute 400 after being heated, so that the quantity of the spodumene pellets entering the rotary kiln 700 is controlled.
In some embodiments, the preheater 200 includes an inner ring 610, an outer ring 620, and a plurality of dividing walls 630. The inner ring 610 includes an inner ring body 611 and an inner ring base plate 612, and the outer ring 620 includes an outer ring body 621 and an outer ring base plate 622. The inner ring 610 is sleeved in the outer ring 620, the inner ring body 611 and the outer ring body 621 are arranged oppositely in the inner and outer directions, the inner ring bottom plate 612 and the outer ring bottom plate 622 are arranged oppositely in the up and down directions, and the inner ring bottom plate 612 is located above the outer ring bottom plate 622. A plurality of dividing walls 630 are connected to the inner ring 610 and the outer ring 620 to divide the preheater 200 into a plurality of chambers. The cavities cannot be influenced mutually, spodumene pellets in different cavities can be controlled independently to enter the feeding chute 400 after being heated, and therefore the quantity of the spodumene pellets entering the rotary kiln 700 is controlled.
In some embodiments, third feed port 410 is located above third discharge port 420. The spodumene pellets entering the feed chute 400 are allowed to quickly pass through the feed chute 400 and into the rotary kiln 700.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A spodumene concentrate preheating device, characterized by, includes:
the ore bin is provided with a first feeding hole and a first discharging hole, the upper end of the ore bin is provided with an ore bin inlet pipe, and the outlet of the ore bin inlet pipe is communicated with the first feeding hole;
the preheater is provided with a preheating cavity, a second feeding hole, a first smoke outlet and a second discharge hole, each of the second feeding hole, the first smoke outlet and the second discharge hole is communicated with the preheating cavity, and the second feeding hole is communicated with the first discharge hole;
the smoke pipeline is provided with a first smoke inlet and a second smoke outlet, and the first smoke inlet is communicated with the first smoke outlet; and
the feeding elephant trunk, the feeding elephant trunk has third feed inlet and third discharge gate, the third feed inlet with the second discharge gate intercommunication, the third discharge gate be suitable for with the mineral aggregate import intercommunication of rotary kiln.
2. The spodumene concentrate preheating apparatus according to claim 1, wherein the preheating chamber comprises a body and a discharge channel, a first end of the discharge channel is communicated with the body, a second end of the discharge channel forms the second discharge port, wherein a bottom wall surface of the discharge channel is obliquely arranged, and a bottom of the second end of the discharge channel is located below a bottom of the first end of the discharge channel.
3. The spodumene concentrate preheating apparatus of claim 2, wherein the angle between the bottom wall surface of the discharge channel and the horizontal plane is between 5 ° and 15 °.
4. The spodumene concentrate preheating apparatus of claim 2, further comprising a pusher including a fixed portion and a telescoping portion, at least a portion of the telescoping portion being located within the discharge channel, the telescoping portion being telescopically disposed on the fixed portion in a direction adjacent to the second discharge port and in a direction away from the second discharge port.
5. The spodumene concentrate preheating apparatus according to claim 4, wherein the direction of movement of the telescoping section is parallel to the bottom wall surface of the tapping channel, the telescoping section being adjacent to the bottom wall surface of the tapping channel or the telescoping section being in contact with the bottom wall surface of the tapping channel.
6. The spodumene concentrate preheating device according to claim 4, further comprising a discharging chute, wherein the upper end of the discharging chute is connected with the first discharging hole, the lower end of the discharging chute is connected with the second feeding hole, a first valve and a second valve are arranged on the discharging chute, and the first valve and the second valve are arranged at intervals in the vertical direction.
7. The spodumene concentrate preheating apparatus of claim 1, wherein the number of preheaters is a plurality of preheaters, the plurality of preheaters are arranged together in a ring shape, the plurality of preheaters are arranged around the third feed port, and optionally, the number of the preheaters is between 4 and 20.
8. The spodumene concentrate preheating device according to claim 1, wherein the preheater comprises an inner ring, an outer ring and a plurality of partition walls, the inner ring comprises an inner ring body and an inner ring bottom plate, the outer ring comprises an outer ring body and an outer ring bottom plate, the plurality of partition walls are connected with the inner ring and the outer ring to divide the preheater into a plurality of cavities, the inner ring is sleeved in the outer ring, the inner ring body and the outer ring body are oppositely arranged in the inner and outer directions, the inner ring bottom plate and the outer ring bottom plate are oppositely arranged in the up and down directions, and the inner ring bottom plate is located above the outer ring bottom plate.
9. The spodumene concentrate preheating apparatus of claim 5, wherein the third feed opening is located above the third discharge opening.
10. A rotary kiln, comprising:
a kiln body having a mineral aggregate inlet; and
the spodumene concentrate preheating device according to any one of claims 1 to 9, the third discharge port of the feed chute of the spodumene concentrate preheating device being in communication with the mineral aggregate inlet.
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| CN202120852743.7U CN215447434U (en) | 2021-04-23 | 2021-04-23 | Spodumene concentrate preheating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203291A (en) * | 2021-04-23 | 2021-08-03 | 中国恩菲工程技术有限公司 | Spodumene concentrate preheating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203291A (en) * | 2021-04-23 | 2021-08-03 | 中国恩菲工程技术有限公司 | Spodumene concentrate preheating device |
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